up

src/Scanner/__Tests/StellaOps.Scanner.Analyzers.Lang.Tests/Core/LanguageAnalyzerResultTests.cs

@@ -1,88 +1,88 @@
-using StellaOps.Scanner.Analyzers.Lang.Tests.TestUtilities;
-
-namespace StellaOps.Scanner.Analyzers.Lang.Tests.Core;
-
-public sealed class LanguageAnalyzerResultTests
-{
-    [Fact]
-    public async Task MergesDuplicateComponentsDeterministicallyAsync()
-    {
-        var analyzer = new DuplicateComponentAnalyzer();
-        var engine = new LanguageAnalyzerEngine(new[] { analyzer });
-        var root = TestPaths.CreateTemporaryDirectory();
-        try
-        {
-            var context = new LanguageAnalyzerContext(root, TimeProvider.System);
-            var result = await engine.AnalyzeAsync(context, CancellationToken.None);
-
-            var component = Assert.Single(result.Components);
-            Assert.Equal("purl::pkg:example/acme@2.0.0", component.ComponentKey);
-            Assert.Equal("pkg:example/acme@2.0.0", component.Purl);
-            Assert.True(component.UsedByEntrypoint);
-            Assert.Equal(2, component.Evidence.Count);
-            Assert.Equal(3, component.Metadata.Count);
-
-            // Metadata retains stable ordering (sorted by key)
-            var keys = component.Metadata.Keys.ToArray();
-            Assert.Equal(new[] { "artifactId", "groupId", "path" }, keys);
-
-            // Evidence de-duplicates via comparison key
-            Assert.Equal(2, component.Evidence.Count);
-        }
-        finally
-        {
-            TestPaths.SafeDelete(root);
-        }
-    }
-
-    private sealed class DuplicateComponentAnalyzer : ILanguageAnalyzer
-    {
-        public string Id => "duplicate";
-
-        public string DisplayName => "Duplicate Analyzer";
-
-        public async ValueTask AnalyzeAsync(LanguageAnalyzerContext context, LanguageComponentWriter writer, CancellationToken cancellationToken)
-        {
-            await Task.Yield();
-
-            var metadataA = new[]
-            {
-                new KeyValuePair<string, string?>("groupId", "example"),
-                new KeyValuePair<string, string?>("artifactId", "acme")
-            };
-
-            var metadataB = new[]
-            {
-                new KeyValuePair<string, string?>("artifactId", "acme"),
-                new KeyValuePair<string, string?>("path", ".")
-            };
-
-            var evidence = new[]
-            {
-                new LanguageComponentEvidence(LanguageEvidenceKind.File, "manifest", "META-INF/MANIFEST.MF", null, null),
-                new LanguageComponentEvidence(LanguageEvidenceKind.Metadata, "pom", "pom.xml", "groupId=example", null)
-            };
-
-            writer.AddFromPurl(
-                analyzerId: Id,
-                purl: "pkg:example/acme@2.0.0",
-                name: "acme",
-                version: "2.0.0",
-                type: "example",
-                metadata: metadataA,
-                evidence: evidence,
-                usedByEntrypoint: true);
-
-            // duplicate insert with different metadata ordering
-            writer.AddFromPurl(
-                analyzerId: Id,
-                purl: "pkg:example/acme@2.0.0",
-                name: "acme",
-                version: "2.0.0",
-                type: "example",
-                metadata: metadataB,
-                evidence: evidence,
-                usedByEntrypoint: false);
-        }
-    }
-}
+using StellaOps.Scanner.Analyzers.Lang.Tests.TestUtilities;
+
+namespace StellaOps.Scanner.Analyzers.Lang.Tests.Core;
+
+public sealed class LanguageAnalyzerResultTests
+{
+    [Fact]
+    public async Task MergesDuplicateComponentsDeterministicallyAsync()
+    {
+        var analyzer = new DuplicateComponentAnalyzer();
+        var engine = new LanguageAnalyzerEngine(new[] { analyzer });
+        var root = TestPaths.CreateTemporaryDirectory();
+        try
+        {
+            var context = new LanguageAnalyzerContext(root, TimeProvider.System);
+            var result = await engine.AnalyzeAsync(context, CancellationToken.None);
+
+            var component = Assert.Single(result.Components);
+            Assert.Equal("purl::pkg:example/acme@2.0.0", component.ComponentKey);
+            Assert.Equal("pkg:example/acme@2.0.0", component.Purl);
+            Assert.True(component.UsedByEntrypoint);
+            Assert.Equal(2, component.Evidence.Count);
+            Assert.Equal(3, component.Metadata.Count);
+
+            // Metadata retains stable ordering (sorted by key)
+            var keys = component.Metadata.Keys.ToArray();
+            Assert.Equal(new[] { "artifactId", "groupId", "path" }, keys);
+
+            // Evidence de-duplicates via comparison key
+            Assert.Equal(2, component.Evidence.Count);
+        }
+        finally
+        {
+            TestPaths.SafeDelete(root);
+        }
+    }
+
+    private sealed class DuplicateComponentAnalyzer : ILanguageAnalyzer
+    {
+        public string Id => "duplicate";
+
+        public string DisplayName => "Duplicate Analyzer";
+
+        public async ValueTask AnalyzeAsync(LanguageAnalyzerContext context, LanguageComponentWriter writer, CancellationToken cancellationToken)
+        {
+            await Task.Yield();
+
+            var metadataA = new[]
+            {
+                new KeyValuePair<string, string?>("groupId", "example"),
+                new KeyValuePair<string, string?>("artifactId", "acme")
+            };
+
+            var metadataB = new[]
+            {
+                new KeyValuePair<string, string?>("artifactId", "acme"),
+                new KeyValuePair<string, string?>("path", ".")
+            };
+
+            var evidence = new[]
+            {
+                new LanguageComponentEvidence(LanguageEvidenceKind.File, "manifest", "META-INF/MANIFEST.MF", null, null),
+                new LanguageComponentEvidence(LanguageEvidenceKind.Metadata, "pom", "pom.xml", "groupId=example", null)
+            };
+
+            writer.AddFromPurl(
+                analyzerId: Id,
+                purl: "pkg:example/acme@2.0.0",
+                name: "acme",
+                version: "2.0.0",
+                type: "example",
+                metadata: metadataA,
+                evidence: evidence,
+                usedByEntrypoint: true);
+
+            // duplicate insert with different metadata ordering
+            writer.AddFromPurl(
+                analyzerId: Id,
+                purl: "pkg:example/acme@2.0.0",
+                name: "acme",
+                version: "2.0.0",
+                type: "example",
+                metadata: metadataB,
+                evidence: evidence,
+                usedByEntrypoint: false);
+        }
+    }
+}

src/Scanner/__Tests/StellaOps.Scanner.Analyzers.Lang.Tests/Core/LanguageComponentMapperTests.cs

@@ -1,70 +1,70 @@
-using StellaOps.Scanner.Core.Contracts;
-
-namespace StellaOps.Scanner.Analyzers.Lang.Tests.Core;
-
-public sealed class LanguageComponentMapperTests
-{
-    [Fact]
-    public void ToComponentRecordsProjectsDeterministicComponents()
-    {
-        // Arrange
-        var analyzerId = "node";
-        var records = new[]
-        {
-            LanguageComponentRecord.FromPurl(
-                analyzerId: analyzerId,
-                purl: "pkg:npm/example@1.0.0",
-                name: "example",
-                version: "1.0.0",
-                type: "npm",
-                metadata: new Dictionary<string, string?>()
-                {
-                    ["path"] = "packages/app",
-                    ["license"] = "MIT"
-                },
-                evidence: new[]
-                {
-                    new LanguageComponentEvidence(LanguageEvidenceKind.File, "package.json", "packages/app/package.json", null, "abc123")
-                },
-                usedByEntrypoint: true),
-            LanguageComponentRecord.FromExplicitKey(
-                analyzerId: analyzerId,
-                componentKey: "bin::sha256:deadbeef",
-                purl: null,
-                name: "app-binary",
-                version: null,
-                type: "binary",
-                metadata: new Dictionary<string, string?>()
-                {
-                    ["description"] = "Utility binary"
-                },
-                evidence: new[]
-                {
-                    new LanguageComponentEvidence(LanguageEvidenceKind.Derived, "entrypoint", "/usr/local/bin/app", "ENTRYPOINT", null)
-                })
-        };
-
-        // Act
-        var layerDigest = LanguageComponentMapper.ComputeLayerDigest(analyzerId);
-        var results = LanguageComponentMapper.ToComponentRecords(analyzerId, records, layerDigest);
-
-        // Assert
-        Assert.Equal(2, results.Length);
-        Assert.All(results, component => Assert.Equal(layerDigest, component.LayerDigest));
-
-        var first = results[0];
-        Assert.Equal("bin::sha256:deadbeef", first.Identity.Key);
-        Assert.Equal("Utility binary", first.Metadata!.Properties!["stellaops.lang.meta.description"]);
-        Assert.Equal("derived", first.Evidence.Single().Kind);
-
-        var second = results[1];
-        Assert.Equal("pkg:npm/example@1.0.0", second.Identity.Key); // prefix removed
-        Assert.True(second.Usage.UsedByEntrypoint);
-        Assert.Contains("MIT", second.Metadata!.Licenses!);
-        Assert.Equal("packages/app", second.Metadata.Properties!["stellaops.lang.meta.path"]);
-        Assert.Equal("abc123", second.Metadata.Properties!["stellaops.lang.evidence.0.sha256"]);
-        Assert.Equal("file", second.Evidence.Single().Kind);
-        Assert.Equal("packages/app/package.json", second.Evidence.Single().Value);
-        Assert.Equal("package.json", second.Evidence.Single().Source);
-    }
-}
+using StellaOps.Scanner.Core.Contracts;
+
+namespace StellaOps.Scanner.Analyzers.Lang.Tests.Core;
+
+public sealed class LanguageComponentMapperTests
+{
+    [Fact]
+    public void ToComponentRecordsProjectsDeterministicComponents()
+    {
+        // Arrange
+        var analyzerId = "node";
+        var records = new[]
+        {
+            LanguageComponentRecord.FromPurl(
+                analyzerId: analyzerId,
+                purl: "pkg:npm/example@1.0.0",
+                name: "example",
+                version: "1.0.0",
+                type: "npm",
+                metadata: new Dictionary<string, string?>()
+                {
+                    ["path"] = "packages/app",
+                    ["license"] = "MIT"
+                },
+                evidence: new[]
+                {
+                    new LanguageComponentEvidence(LanguageEvidenceKind.File, "package.json", "packages/app/package.json", null, "abc123")
+                },
+                usedByEntrypoint: true),
+            LanguageComponentRecord.FromExplicitKey(
+                analyzerId: analyzerId,
+                componentKey: "bin::sha256:deadbeef",
+                purl: null,
+                name: "app-binary",
+                version: null,
+                type: "binary",
+                metadata: new Dictionary<string, string?>()
+                {
+                    ["description"] = "Utility binary"
+                },
+                evidence: new[]
+                {
+                    new LanguageComponentEvidence(LanguageEvidenceKind.Derived, "entrypoint", "/usr/local/bin/app", "ENTRYPOINT", null)
+                })
+        };
+
+        // Act
+        var layerDigest = LanguageComponentMapper.ComputeLayerDigest(analyzerId);
+        var results = LanguageComponentMapper.ToComponentRecords(analyzerId, records, layerDigest);
+
+        // Assert
+        Assert.Equal(2, results.Length);
+        Assert.All(results, component => Assert.Equal(layerDigest, component.LayerDigest));
+
+        var first = results[0];
+        Assert.Equal("bin::sha256:deadbeef", first.Identity.Key);
+        Assert.Equal("Utility binary", first.Metadata!.Properties!["stellaops.lang.meta.description"]);
+        Assert.Equal("derived", first.Evidence.Single().Kind);
+
+        var second = results[1];
+        Assert.Equal("pkg:npm/example@1.0.0", second.Identity.Key); // prefix removed
+        Assert.True(second.Usage.UsedByEntrypoint);
+        Assert.Contains("MIT", second.Metadata!.Licenses!);
+        Assert.Equal("packages/app", second.Metadata.Properties!["stellaops.lang.meta.path"]);
+        Assert.Equal("abc123", second.Metadata.Properties!["stellaops.lang.evidence.0.sha256"]);
+        Assert.Equal("file", second.Evidence.Single().Kind);
+        Assert.Equal("packages/app/package.json", second.Evidence.Single().Value);
+        Assert.Equal("package.json", second.Evidence.Single().Source);
+    }
+}

src/Scanner/__Tests/StellaOps.Scanner.Analyzers.Lang.Tests/Determinism/LanguageAnalyzerHarnessTests.cs

@@ -1,102 +1,102 @@
-using StellaOps.Scanner.Analyzers.Lang;
-using StellaOps.Scanner.Analyzers.Lang.Tests.Harness;
-using StellaOps.Scanner.Analyzers.Lang.Tests.TestUtilities;
-
-namespace StellaOps.Scanner.Analyzers.Lang.Tests.Determinism;
-
-public sealed class LanguageAnalyzerHarnessTests
-{
-    [Fact]
-    public async Task HarnessProducesDeterministicOutputAsync()
-    {
-        var fixturePath = TestPaths.ResolveFixture("determinism", "basic", "input");
-        var goldenPath = TestPaths.ResolveFixture("determinism", "basic", "expected.json");
-        var cancellationToken = TestContext.Current.CancellationToken;
-
-        var analyzers = new ILanguageAnalyzer[]
-        {
-            new FakeLanguageAnalyzer(
-                "fake-java",
-                LanguageComponentRecord.FromPurl(
-                    analyzerId: "fake-java",
-                    purl: "pkg:maven/org.example/example-lib@1.2.3",
-                    name: "example-lib",
-                    version: "1.2.3",
-                    type: "maven",
-                    metadata: new Dictionary<string, string?>
-                    {
-                        ["groupId"] = "org.example",
-                        ["artifactId"] = "example-lib",
-                    },
-                    evidence: new []
-                    {
-                        new LanguageComponentEvidence(LanguageEvidenceKind.File, "pom.properties", "META-INF/maven/org.example/example-lib/pom.properties", null, "abc123"),
-                    }),
-                LanguageComponentRecord.FromExplicitKey(
-                    analyzerId: "fake-java",
-                    componentKey: "bin::sha256:deadbeef",
-                    purl: null,
-                    name: "example-cli",
-                    version: null,
-                    type: "bin",
-                    metadata: new Dictionary<string, string?>
-                    {
-                        ["sha256"] = "deadbeef",
-                    },
-                    evidence: new []
-                    {
-                        new LanguageComponentEvidence(LanguageEvidenceKind.File, "binary", "usr/local/bin/example", null, "deadbeef"),
-                    })),
-            new FakeLanguageAnalyzer(
-                "fake-node",
-                LanguageComponentRecord.FromPurl(
-                    analyzerId: "fake-node",
-                    purl: "pkg:npm/example-package@4.5.6",
-                    name: "example-package",
-                    version: "4.5.6",
-                    type: "npm",
-                    metadata: new Dictionary<string, string?>
-                    {
-                        ["workspace"] = "packages/example",
-                    },
-                    evidence: new []
-                    {
-                        new LanguageComponentEvidence(LanguageEvidenceKind.File, "package.json", "packages/example/package.json", null, null),
-                    },
-                    usedByEntrypoint: true)),
-        };
-
-        await LanguageAnalyzerTestHarness.AssertDeterministicAsync(fixturePath, goldenPath, analyzers, cancellationToken);
-
-        var first = await LanguageAnalyzerTestHarness.RunToJsonAsync(fixturePath, analyzers, cancellationToken);
-        var second = await LanguageAnalyzerTestHarness.RunToJsonAsync(fixturePath, analyzers, cancellationToken);
-        Assert.Equal(first, second);
-    }
-
-    private sealed class FakeLanguageAnalyzer : ILanguageAnalyzer
-    {
-        private readonly IReadOnlyList<LanguageComponentRecord> _components;
-
-        public FakeLanguageAnalyzer(string id, params LanguageComponentRecord[] components)
-        {
-            Id = id;
-            DisplayName = id;
-            _components = components ?? Array.Empty<LanguageComponentRecord>();
-        }
-
-        public string Id { get; }
-
-        public string DisplayName { get; }
-
-        public async ValueTask AnalyzeAsync(LanguageAnalyzerContext context, LanguageComponentWriter writer, CancellationToken cancellationToken)
-        {
-            await Task.Delay(5, cancellationToken).ConfigureAwait(false); // ensure asynchrony is handled
-
-            // Intentionally add in reverse order to prove determinism.
-            foreach (var component in _components.Reverse())
-            {
-                writer.Add(component);
-            }
-        }
-    }
-}
+using StellaOps.Scanner.Analyzers.Lang;
+using StellaOps.Scanner.Analyzers.Lang.Tests.Harness;
+using StellaOps.Scanner.Analyzers.Lang.Tests.TestUtilities;
+
+namespace StellaOps.Scanner.Analyzers.Lang.Tests.Determinism;
+
+public sealed class LanguageAnalyzerHarnessTests
+{
+    [Fact]
+    public async Task HarnessProducesDeterministicOutputAsync()
+    {
+        var fixturePath = TestPaths.ResolveFixture("determinism", "basic", "input");
+        var goldenPath = TestPaths.ResolveFixture("determinism", "basic", "expected.json");
+        var cancellationToken = TestContext.Current.CancellationToken;
+
+        var analyzers = new ILanguageAnalyzer[]
+        {
+            new FakeLanguageAnalyzer(
+                "fake-java",
+                LanguageComponentRecord.FromPurl(
+                    analyzerId: "fake-java",
+                    purl: "pkg:maven/org.example/example-lib@1.2.3",
+                    name: "example-lib",
+                    version: "1.2.3",
+                    type: "maven",
+                    metadata: new Dictionary<string, string?>
+                    {
+                        ["groupId"] = "org.example",
+                        ["artifactId"] = "example-lib",
+                    },
+                    evidence: new []
+                    {
+                        new LanguageComponentEvidence(LanguageEvidenceKind.File, "pom.properties", "META-INF/maven/org.example/example-lib/pom.properties", null, "abc123"),
+                    }),
+                LanguageComponentRecord.FromExplicitKey(
+                    analyzerId: "fake-java",
+                    componentKey: "bin::sha256:deadbeef",
+                    purl: null,
+                    name: "example-cli",
+                    version: null,
+                    type: "bin",
+                    metadata: new Dictionary<string, string?>
+                    {
+                        ["sha256"] = "deadbeef",
+                    },
+                    evidence: new []
+                    {
+                        new LanguageComponentEvidence(LanguageEvidenceKind.File, "binary", "usr/local/bin/example", null, "deadbeef"),
+                    })),
+            new FakeLanguageAnalyzer(
+                "fake-node",
+                LanguageComponentRecord.FromPurl(
+                    analyzerId: "fake-node",
+                    purl: "pkg:npm/example-package@4.5.6",
+                    name: "example-package",
+                    version: "4.5.6",
+                    type: "npm",
+                    metadata: new Dictionary<string, string?>
+                    {
+                        ["workspace"] = "packages/example",
+                    },
+                    evidence: new []
+                    {
+                        new LanguageComponentEvidence(LanguageEvidenceKind.File, "package.json", "packages/example/package.json", null, null),
+                    },
+                    usedByEntrypoint: true)),
+        };
+
+        await LanguageAnalyzerTestHarness.AssertDeterministicAsync(fixturePath, goldenPath, analyzers, cancellationToken);
+
+        var first = await LanguageAnalyzerTestHarness.RunToJsonAsync(fixturePath, analyzers, cancellationToken);
+        var second = await LanguageAnalyzerTestHarness.RunToJsonAsync(fixturePath, analyzers, cancellationToken);
+        Assert.Equal(first, second);
+    }
+
+    private sealed class FakeLanguageAnalyzer : ILanguageAnalyzer
+    {
+        private readonly IReadOnlyList<LanguageComponentRecord> _components;
+
+        public FakeLanguageAnalyzer(string id, params LanguageComponentRecord[] components)
+        {
+            Id = id;
+            DisplayName = id;
+            _components = components ?? Array.Empty<LanguageComponentRecord>();
+        }
+
+        public string Id { get; }
+
+        public string DisplayName { get; }
+
+        public async ValueTask AnalyzeAsync(LanguageAnalyzerContext context, LanguageComponentWriter writer, CancellationToken cancellationToken)
+        {
+            await Task.Delay(5, cancellationToken).ConfigureAwait(false); // ensure asynchrony is handled
+
+            // Intentionally add in reverse order to prove determinism.
+            foreach (var component in _components.Reverse())
+            {
+                writer.Add(component);
+            }
+        }
+    }
+}

src/Scanner/__Tests/StellaOps.Scanner.Analyzers.Lang.Tests/Rust/RustLanguageAnalyzerTests.cs

@@ -1,41 +1,41 @@
-using System;
-using System.IO;
-using System.Linq;
+using System;
+using System.IO;
+using System.Linq;
 using System.Text.Json.Nodes;
 using StellaOps.Scanner.Analyzers.Lang.Rust;
-using StellaOps.Scanner.Analyzers.Lang.Tests.Harness;
-using StellaOps.Scanner.Analyzers.Lang.Tests.TestUtilities;
-
-namespace StellaOps.Scanner.Analyzers.Lang.Tests.Rust;
-
-public sealed class RustLanguageAnalyzerTests
-{
-    [Fact]
-    public async Task SimpleFixtureProducesDeterministicOutputAsync()
-    {
-        var cancellationToken = TestContext.Current.CancellationToken;
-        var fixturePath = TestPaths.ResolveFixture("lang", "rust", "simple");
-        var goldenPath = Path.Combine(fixturePath, "expected.json");
-
-        var usageHints = new LanguageUsageHints(new[]
-        {
-            Path.Combine(fixturePath, "usr/local/bin/my_app")
-        });
-
-        var analyzers = new ILanguageAnalyzer[]
-        {
-            new RustLanguageAnalyzer()
-        };
-
-        await LanguageAnalyzerTestHarness.AssertDeterministicAsync(
-            fixturePath,
-            goldenPath,
-            analyzers,
-            cancellationToken,
-            usageHints);
-    }
-
-    [Fact]
+using StellaOps.Scanner.Analyzers.Lang.Tests.Harness;
+using StellaOps.Scanner.Analyzers.Lang.Tests.TestUtilities;
+
+namespace StellaOps.Scanner.Analyzers.Lang.Tests.Rust;
+
+public sealed class RustLanguageAnalyzerTests
+{
+    [Fact]
+    public async Task SimpleFixtureProducesDeterministicOutputAsync()
+    {
+        var cancellationToken = TestContext.Current.CancellationToken;
+        var fixturePath = TestPaths.ResolveFixture("lang", "rust", "simple");
+        var goldenPath = Path.Combine(fixturePath, "expected.json");
+
+        var usageHints = new LanguageUsageHints(new[]
+        {
+            Path.Combine(fixturePath, "usr/local/bin/my_app")
+        });
+
+        var analyzers = new ILanguageAnalyzer[]
+        {
+            new RustLanguageAnalyzer()
+        };
+
+        await LanguageAnalyzerTestHarness.AssertDeterministicAsync(
+            fixturePath,
+            goldenPath,
+            analyzers,
+            cancellationToken,
+            usageHints);
+    }
+
+    [Fact]
     public async Task AnalyzerIsThreadSafeUnderConcurrencyAsync()
     {
         var cancellationToken = TestContext.Current.CancellationToken;

src/Scanner/__Tests/StellaOps.Scanner.Analyzers.Lang.Tests/TestUtilities/JavaClassFileFactory.cs

@@ -1,428 +1,428 @@
-using System.Buffers.Binary;
-using System.Text;
-
-namespace StellaOps.Scanner.Analyzers.Lang.Tests.TestUtilities;
-
-public static class JavaClassFileFactory
-{
-    public static byte[] CreateClassForNameInvoker(string internalClassName, string targetClassName)
-    {
-        using var buffer = new MemoryStream();
-        using var writer = new BigEndianWriter(buffer);
-
-        WriteClassFileHeader(writer, constantPoolCount: 16);
-
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8(internalClassName); // #1
-        writer.WriteByte((byte)ConstantTag.Class); writer.WriteUInt16(1); // #2
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("java/lang/Object"); // #3
-        writer.WriteByte((byte)ConstantTag.Class); writer.WriteUInt16(3); // #4
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("invoke"); // #5
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("()V"); // #6
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("Code"); // #7
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8(targetClassName); // #8
-        writer.WriteByte((byte)ConstantTag.String); writer.WriteUInt16(8); // #9
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("java/lang/Class"); // #10
-        writer.WriteByte((byte)ConstantTag.Class); writer.WriteUInt16(10); // #11
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("forName"); // #12
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("(Ljava/lang/String;)Ljava/lang/Class;"); // #13
-        writer.WriteByte((byte)ConstantTag.NameAndType); writer.WriteUInt16(12); writer.WriteUInt16(13); // #14
-        writer.WriteByte((byte)ConstantTag.Methodref); writer.WriteUInt16(11); writer.WriteUInt16(14); // #15
-
-        writer.WriteUInt16(0x0001); // public
-        writer.WriteUInt16(2); // this class
-        writer.WriteUInt16(4); // super class
-
-        writer.WriteUInt16(0); // interfaces
-        writer.WriteUInt16(0); // fields
-        writer.WriteUInt16(1); // methods
-
-        WriteInvokeMethod(writer, methodNameIndex: 5, descriptorIndex: 6, ldcIndex: 9, methodRefIndex: 15);
-
-        writer.WriteUInt16(0); // class attributes
-
-        return buffer.ToArray();
-    }
-
-    public static byte[] CreateClassResourceLookup(string internalClassName, string resourcePath)
-    {
-        using var buffer = new MemoryStream();
-        using var writer = new BigEndianWriter(buffer);
-
-        WriteClassFileHeader(writer, constantPoolCount: 20);
-
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8(internalClassName); // #1
-        writer.WriteByte((byte)ConstantTag.Class); writer.WriteUInt16(1); // #2
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("java/lang/Object"); // #3
-        writer.WriteByte((byte)ConstantTag.Class); writer.WriteUInt16(3); // #4
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("load"); // #5
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("()V"); // #6
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("Code"); // #7
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8(resourcePath); // #8
-        writer.WriteByte((byte)ConstantTag.String); writer.WriteUInt16(8); // #9
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("java/lang/ClassLoader"); // #10
-        writer.WriteByte((byte)ConstantTag.Class); writer.WriteUInt16(10); // #11
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("getSystemClassLoader"); // #12
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("()Ljava/lang/ClassLoader;"); // #13
-        writer.WriteByte((byte)ConstantTag.NameAndType); writer.WriteUInt16(12); writer.WriteUInt16(13); // #14
-        writer.WriteByte((byte)ConstantTag.Methodref); writer.WriteUInt16(11); writer.WriteUInt16(14); // #15
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("getResource"); // #16
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("(Ljava/lang/String;)Ljava/net/URL;"); // #17
-        writer.WriteByte((byte)ConstantTag.NameAndType); writer.WriteUInt16(16); writer.WriteUInt16(17); // #18
-        writer.WriteByte((byte)ConstantTag.Methodref); writer.WriteUInt16(11); writer.WriteUInt16(18); // #19
-
-        writer.WriteUInt16(0x0001); // public
-        writer.WriteUInt16(2); // this class
-        writer.WriteUInt16(4); // super class
-
-        writer.WriteUInt16(0); // interfaces
-        writer.WriteUInt16(0); // fields
-        writer.WriteUInt16(1); // methods
-
-        WriteResourceLookupMethod(writer, methodNameIndex: 5, descriptorIndex: 6, systemLoaderMethodRefIndex: 15, stringIndex: 9, getResourceMethodRefIndex: 19);
-
-        writer.WriteUInt16(0); // class attributes
-
-        return buffer.ToArray();
-    }
-
-    public static byte[] CreateTcclChecker(string internalClassName)
-    {
-        using var buffer = new MemoryStream();
-        using var writer = new BigEndianWriter(buffer);
-
-        WriteClassFileHeader(writer, constantPoolCount: 18);
-
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8(internalClassName); // #1
-        writer.WriteByte((byte)ConstantTag.Class); writer.WriteUInt16(1); // #2
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("java/lang/Object"); // #3
-        writer.WriteByte((byte)ConstantTag.Class); writer.WriteUInt16(3); // #4
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("check"); // #5
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("()V"); // #6
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("Code"); // #7
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("java/lang/Thread"); // #8
-        writer.WriteByte((byte)ConstantTag.Class); writer.WriteUInt16(8); // #9
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("currentThread"); // #10
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("()Ljava/lang/Thread;"); // #11
-        writer.WriteByte((byte)ConstantTag.NameAndType); writer.WriteUInt16(10); writer.WriteUInt16(11); // #12
-        writer.WriteByte((byte)ConstantTag.Methodref); writer.WriteUInt16(9); writer.WriteUInt16(12); // #13
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("getContextClassLoader"); // #14
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("()Ljava/lang/ClassLoader;"); // #15
-        writer.WriteByte((byte)ConstantTag.NameAndType); writer.WriteUInt16(14); writer.WriteUInt16(15); // #16
-        writer.WriteByte((byte)ConstantTag.Methodref); writer.WriteUInt16(9); writer.WriteUInt16(16); // #17
-
-        writer.WriteUInt16(0x0001); // public
-        writer.WriteUInt16(2); // this
-        writer.WriteUInt16(4); // super
-
-        writer.WriteUInt16(0); // interfaces
-        writer.WriteUInt16(0); // fields
-        writer.WriteUInt16(1); // methods
-
-        WriteTcclMethod(writer, methodNameIndex: 5, descriptorIndex: 6, currentThreadMethodRefIndex: 13, getContextMethodRefIndex: 17);
-
-        writer.WriteUInt16(0); // class attributes
-
-        return buffer.ToArray();
-    }
-
-    private static void WriteClassFileHeader(BigEndianWriter writer, ushort constantPoolCount)
-    {
-        writer.WriteUInt32(0xCAFEBABE);
-        writer.WriteUInt16(0);
-        writer.WriteUInt16(52);
-        writer.WriteUInt16(constantPoolCount);
-    }
-
-    private static void WriteInvokeMethod(BigEndianWriter writer, ushort methodNameIndex, ushort descriptorIndex, ushort ldcIndex, ushort methodRefIndex)
-    {
-        writer.WriteUInt16(0x0009); // public static
-        writer.WriteUInt16(methodNameIndex);
-        writer.WriteUInt16(descriptorIndex);
-        writer.WriteUInt16(1); // attributes_count
-
-        writer.WriteUInt16(7); // "Code"
-        using var codeBuffer = new MemoryStream();
-        using (var codeWriter = new BigEndianWriter(codeBuffer))
-        {
-            codeWriter.WriteUInt16(1); // max_stack
-            codeWriter.WriteUInt16(0); // max_locals
-            codeWriter.WriteUInt32(6); // code_length
-            codeWriter.WriteByte(0x12);
-            codeWriter.WriteByte((byte)ldcIndex);
-            codeWriter.WriteByte(0xB8);
-            codeWriter.WriteUInt16(methodRefIndex);
-            codeWriter.WriteByte(0xB1);
-            codeWriter.WriteUInt16(0); // exception table length
-            codeWriter.WriteUInt16(0); // code attributes
-        }
-
-        var codeBytes = codeBuffer.ToArray();
-        writer.WriteUInt32((uint)codeBytes.Length);
-        writer.WriteBytes(codeBytes);
-    }
-
-    private static void WriteTcclMethod(BigEndianWriter writer, ushort methodNameIndex, ushort descriptorIndex, ushort currentThreadMethodRefIndex, ushort getContextMethodRefIndex)
-    {
-        writer.WriteUInt16(0x0009);
-        writer.WriteUInt16(methodNameIndex);
-        writer.WriteUInt16(descriptorIndex);
-        writer.WriteUInt16(1);
-
-        writer.WriteUInt16(7);
-        using var codeBuffer = new MemoryStream();
-        using (var codeWriter = new BigEndianWriter(codeBuffer))
-        {
-            codeWriter.WriteUInt16(2);
-            codeWriter.WriteUInt16(0);
-            codeWriter.WriteUInt32(8);
-            codeWriter.WriteByte(0xB8);
-            codeWriter.WriteUInt16(currentThreadMethodRefIndex);
-            codeWriter.WriteByte(0xB6);
-            codeWriter.WriteUInt16(getContextMethodRefIndex);
-            codeWriter.WriteByte(0x57);
-            codeWriter.WriteByte(0xB1);
-            codeWriter.WriteUInt16(0);
-            codeWriter.WriteUInt16(0);
-        }
-
-        var codeBytes = codeBuffer.ToArray();
-        writer.WriteUInt32((uint)codeBytes.Length);
-        writer.WriteBytes(codeBytes);
-    }
-
-    private static void WriteResourceLookupMethod(
-        BigEndianWriter writer,
-        ushort methodNameIndex,
-        ushort descriptorIndex,
-        ushort systemLoaderMethodRefIndex,
-        ushort stringIndex,
-        ushort getResourceMethodRefIndex)
-    {
-        writer.WriteUInt16(0x0009);
-        writer.WriteUInt16(methodNameIndex);
-        writer.WriteUInt16(descriptorIndex);
-        writer.WriteUInt16(1);
-
-        writer.WriteUInt16(7);
-        using var codeBuffer = new MemoryStream();
-        using (var codeWriter = new BigEndianWriter(codeBuffer))
-        {
-            codeWriter.WriteUInt16(2);
-            codeWriter.WriteUInt16(0);
-            codeWriter.WriteUInt32(10);
-            codeWriter.WriteByte(0xB8); // invokestatic
-            codeWriter.WriteUInt16(systemLoaderMethodRefIndex);
-            codeWriter.WriteByte(0x12); // ldc
-            codeWriter.WriteByte((byte)stringIndex);
-            codeWriter.WriteByte(0xB6); // invokevirtual
-            codeWriter.WriteUInt16(getResourceMethodRefIndex);
-            codeWriter.WriteByte(0x57);
-            codeWriter.WriteByte(0xB1);
-            codeWriter.WriteUInt16(0);
-            codeWriter.WriteUInt16(0);
-        }
-
-        var codeBytes = codeBuffer.ToArray();
-        writer.WriteUInt32((uint)codeBytes.Length);
-        writer.WriteBytes(codeBytes);
-    }
-
-    private sealed class BigEndianWriter : IDisposable
-    {
-        private readonly BinaryWriter _writer;
-
-        public BigEndianWriter(Stream stream)
-        {
-            _writer = new BinaryWriter(stream, Encoding.UTF8, leaveOpen: true);
-        }
-
-        public void WriteByte(byte value) => _writer.Write(value);
-
-        public void WriteBytes(byte[] data) => _writer.Write(data);
-
-        public void WriteUInt16(ushort value)
-        {
-            Span<byte> buffer = stackalloc byte[2];
-            BinaryPrimitives.WriteUInt16BigEndian(buffer, value);
-            _writer.Write(buffer);
-        }
-
-        public void WriteUInt32(uint value)
-        {
-            Span<byte> buffer = stackalloc byte[4];
-            BinaryPrimitives.WriteUInt32BigEndian(buffer, value);
-            _writer.Write(buffer);
-        }
-
-        public void WriteUtf8(string value)
-        {
-            var bytes = Encoding.UTF8.GetBytes(value);
-            WriteUInt16((ushort)bytes.Length);
-            _writer.Write(bytes);
-        }
-
-        public void Dispose() => _writer.Dispose();
-    }
-
-    /// <summary>
-    /// Creates a class file with a native method declaration.
-    /// </summary>
-    public static byte[] CreateNativeMethodClass(string internalClassName, string nativeMethodName)
-    {
-        using var buffer = new MemoryStream();
-        using var writer = new BigEndianWriter(buffer);
-
-        WriteClassFileHeader(writer, constantPoolCount: 8);
-
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8(internalClassName); // #1
-        writer.WriteByte((byte)ConstantTag.Class); writer.WriteUInt16(1); // #2
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("java/lang/Object"); // #3
-        writer.WriteByte((byte)ConstantTag.Class); writer.WriteUInt16(3); // #4
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8(nativeMethodName); // #5
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("()V"); // #6
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("Code"); // #7
-
-        writer.WriteUInt16(0x0001); // public
-        writer.WriteUInt16(2); // this class
-        writer.WriteUInt16(4); // super class
-
-        writer.WriteUInt16(0); // interfaces
-        writer.WriteUInt16(0); // fields
-        writer.WriteUInt16(1); // methods
-
-        // native method: access_flags = ACC_PUBLIC | ACC_NATIVE (0x0101)
-        writer.WriteUInt16(0x0101);
-        writer.WriteUInt16(5); // name
-        writer.WriteUInt16(6); // descriptor
-        writer.WriteUInt16(0); // no attributes (native methods have no Code)
-
-        writer.WriteUInt16(0); // class attributes
-
-        return buffer.ToArray();
-    }
-
-    /// <summary>
-    /// Creates a class file with a System.loadLibrary call.
-    /// </summary>
-    public static byte[] CreateSystemLoadLibraryInvoker(string internalClassName, string libraryName)
-    {
-        using var buffer = new MemoryStream();
-        using var writer = new BigEndianWriter(buffer);
-
-        WriteClassFileHeader(writer, constantPoolCount: 16);
-
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8(internalClassName); // #1
-        writer.WriteByte((byte)ConstantTag.Class); writer.WriteUInt16(1); // #2
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("java/lang/Object"); // #3
-        writer.WriteByte((byte)ConstantTag.Class); writer.WriteUInt16(3); // #4
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("loadNative"); // #5
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("()V"); // #6
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("Code"); // #7
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8(libraryName); // #8
-        writer.WriteByte((byte)ConstantTag.String); writer.WriteUInt16(8); // #9
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("java/lang/System"); // #10
-        writer.WriteByte((byte)ConstantTag.Class); writer.WriteUInt16(10); // #11
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("loadLibrary"); // #12
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("(Ljava/lang/String;)V"); // #13
-        writer.WriteByte((byte)ConstantTag.NameAndType); writer.WriteUInt16(12); writer.WriteUInt16(13); // #14
-        writer.WriteByte((byte)ConstantTag.Methodref); writer.WriteUInt16(11); writer.WriteUInt16(14); // #15
-
-        writer.WriteUInt16(0x0001); // public
-        writer.WriteUInt16(2); // this class
-        writer.WriteUInt16(4); // super class
-
-        writer.WriteUInt16(0); // interfaces
-        writer.WriteUInt16(0); // fields
-        writer.WriteUInt16(1); // methods
-
-        WriteInvokeStaticMethod(writer, methodNameIndex: 5, descriptorIndex: 6, ldcIndex: 9, methodRefIndex: 15);
-
-        writer.WriteUInt16(0); // class attributes
-
-        return buffer.ToArray();
-    }
-
-    /// <summary>
-    /// Creates a class file with a System.load call (loads by path).
-    /// </summary>
-    public static byte[] CreateSystemLoadInvoker(string internalClassName, string libraryPath)
-    {
-        using var buffer = new MemoryStream();
-        using var writer = new BigEndianWriter(buffer);
-
-        WriteClassFileHeader(writer, constantPoolCount: 16);
-
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8(internalClassName); // #1
-        writer.WriteByte((byte)ConstantTag.Class); writer.WriteUInt16(1); // #2
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("java/lang/Object"); // #3
-        writer.WriteByte((byte)ConstantTag.Class); writer.WriteUInt16(3); // #4
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("loadNative"); // #5
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("()V"); // #6
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("Code"); // #7
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8(libraryPath); // #8
-        writer.WriteByte((byte)ConstantTag.String); writer.WriteUInt16(8); // #9
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("java/lang/System"); // #10
-        writer.WriteByte((byte)ConstantTag.Class); writer.WriteUInt16(10); // #11
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("load"); // #12
-        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("(Ljava/lang/String;)V"); // #13
-        writer.WriteByte((byte)ConstantTag.NameAndType); writer.WriteUInt16(12); writer.WriteUInt16(13); // #14
-        writer.WriteByte((byte)ConstantTag.Methodref); writer.WriteUInt16(11); writer.WriteUInt16(14); // #15
-
-        writer.WriteUInt16(0x0001); // public
-        writer.WriteUInt16(2); // this class
-        writer.WriteUInt16(4); // super class
-
-        writer.WriteUInt16(0); // interfaces
-        writer.WriteUInt16(0); // fields
-        writer.WriteUInt16(1); // methods
-
-        WriteInvokeStaticMethod(writer, methodNameIndex: 5, descriptorIndex: 6, ldcIndex: 9, methodRefIndex: 15);
-
-        writer.WriteUInt16(0); // class attributes
-
-        return buffer.ToArray();
-    }
-
-    private static void WriteInvokeStaticMethod(BigEndianWriter writer, ushort methodNameIndex, ushort descriptorIndex, ushort ldcIndex, ushort methodRefIndex)
-    {
-        writer.WriteUInt16(0x0009); // public static
-        writer.WriteUInt16(methodNameIndex);
-        writer.WriteUInt16(descriptorIndex);
-        writer.WriteUInt16(1); // attributes_count
-
-        writer.WriteUInt16(7); // "Code"
-        using var codeBuffer = new MemoryStream();
-        using (var codeWriter = new BigEndianWriter(codeBuffer))
-        {
-            codeWriter.WriteUInt16(1); // max_stack
-            codeWriter.WriteUInt16(0); // max_locals
-            codeWriter.WriteUInt32(6); // code_length
-            codeWriter.WriteByte(0x12); // ldc
-            codeWriter.WriteByte((byte)ldcIndex);
-            codeWriter.WriteByte(0xB8); // invokestatic
-            codeWriter.WriteUInt16(methodRefIndex);
-            codeWriter.WriteByte(0xB1); // return
-            codeWriter.WriteUInt16(0); // exception table length
-            codeWriter.WriteUInt16(0); // code attributes
-        }
-
-        var codeBytes = codeBuffer.ToArray();
-        writer.WriteUInt32((uint)codeBytes.Length);
-        writer.WriteBytes(codeBytes);
-    }
-
-    private enum ConstantTag : byte
-    {
-        Utf8 = 1,
-        Integer = 3,
-        Float = 4,
-        Long = 5,
-        Double = 6,
-        Class = 7,
-        String = 8,
-        Fieldref = 9,
-        Methodref = 10,
-        InterfaceMethodref = 11,
-        NameAndType = 12,
-    }
-}
+using System.Buffers.Binary;
+using System.Text;
+
+namespace StellaOps.Scanner.Analyzers.Lang.Tests.TestUtilities;
+
+public static class JavaClassFileFactory
+{
+    public static byte[] CreateClassForNameInvoker(string internalClassName, string targetClassName)
+    {
+        using var buffer = new MemoryStream();
+        using var writer = new BigEndianWriter(buffer);
+
+        WriteClassFileHeader(writer, constantPoolCount: 16);
+
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8(internalClassName); // #1
+        writer.WriteByte((byte)ConstantTag.Class); writer.WriteUInt16(1); // #2
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("java/lang/Object"); // #3
+        writer.WriteByte((byte)ConstantTag.Class); writer.WriteUInt16(3); // #4
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("invoke"); // #5
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("()V"); // #6
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("Code"); // #7
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8(targetClassName); // #8
+        writer.WriteByte((byte)ConstantTag.String); writer.WriteUInt16(8); // #9
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("java/lang/Class"); // #10
+        writer.WriteByte((byte)ConstantTag.Class); writer.WriteUInt16(10); // #11
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("forName"); // #12
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("(Ljava/lang/String;)Ljava/lang/Class;"); // #13
+        writer.WriteByte((byte)ConstantTag.NameAndType); writer.WriteUInt16(12); writer.WriteUInt16(13); // #14
+        writer.WriteByte((byte)ConstantTag.Methodref); writer.WriteUInt16(11); writer.WriteUInt16(14); // #15
+
+        writer.WriteUInt16(0x0001); // public
+        writer.WriteUInt16(2); // this class
+        writer.WriteUInt16(4); // super class
+
+        writer.WriteUInt16(0); // interfaces
+        writer.WriteUInt16(0); // fields
+        writer.WriteUInt16(1); // methods
+
+        WriteInvokeMethod(writer, methodNameIndex: 5, descriptorIndex: 6, ldcIndex: 9, methodRefIndex: 15);
+
+        writer.WriteUInt16(0); // class attributes
+
+        return buffer.ToArray();
+    }
+
+    public static byte[] CreateClassResourceLookup(string internalClassName, string resourcePath)
+    {
+        using var buffer = new MemoryStream();
+        using var writer = new BigEndianWriter(buffer);
+
+        WriteClassFileHeader(writer, constantPoolCount: 20);
+
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8(internalClassName); // #1
+        writer.WriteByte((byte)ConstantTag.Class); writer.WriteUInt16(1); // #2
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("java/lang/Object"); // #3
+        writer.WriteByte((byte)ConstantTag.Class); writer.WriteUInt16(3); // #4
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("load"); // #5
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("()V"); // #6
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("Code"); // #7
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8(resourcePath); // #8
+        writer.WriteByte((byte)ConstantTag.String); writer.WriteUInt16(8); // #9
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("java/lang/ClassLoader"); // #10
+        writer.WriteByte((byte)ConstantTag.Class); writer.WriteUInt16(10); // #11
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("getSystemClassLoader"); // #12
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("()Ljava/lang/ClassLoader;"); // #13
+        writer.WriteByte((byte)ConstantTag.NameAndType); writer.WriteUInt16(12); writer.WriteUInt16(13); // #14
+        writer.WriteByte((byte)ConstantTag.Methodref); writer.WriteUInt16(11); writer.WriteUInt16(14); // #15
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("getResource"); // #16
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("(Ljava/lang/String;)Ljava/net/URL;"); // #17
+        writer.WriteByte((byte)ConstantTag.NameAndType); writer.WriteUInt16(16); writer.WriteUInt16(17); // #18
+        writer.WriteByte((byte)ConstantTag.Methodref); writer.WriteUInt16(11); writer.WriteUInt16(18); // #19
+
+        writer.WriteUInt16(0x0001); // public
+        writer.WriteUInt16(2); // this class
+        writer.WriteUInt16(4); // super class
+
+        writer.WriteUInt16(0); // interfaces
+        writer.WriteUInt16(0); // fields
+        writer.WriteUInt16(1); // methods
+
+        WriteResourceLookupMethod(writer, methodNameIndex: 5, descriptorIndex: 6, systemLoaderMethodRefIndex: 15, stringIndex: 9, getResourceMethodRefIndex: 19);
+
+        writer.WriteUInt16(0); // class attributes
+
+        return buffer.ToArray();
+    }
+
+    public static byte[] CreateTcclChecker(string internalClassName)
+    {
+        using var buffer = new MemoryStream();
+        using var writer = new BigEndianWriter(buffer);
+
+        WriteClassFileHeader(writer, constantPoolCount: 18);
+
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8(internalClassName); // #1
+        writer.WriteByte((byte)ConstantTag.Class); writer.WriteUInt16(1); // #2
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("java/lang/Object"); // #3
+        writer.WriteByte((byte)ConstantTag.Class); writer.WriteUInt16(3); // #4
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("check"); // #5
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("()V"); // #6
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("Code"); // #7
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("java/lang/Thread"); // #8
+        writer.WriteByte((byte)ConstantTag.Class); writer.WriteUInt16(8); // #9
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("currentThread"); // #10
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("()Ljava/lang/Thread;"); // #11
+        writer.WriteByte((byte)ConstantTag.NameAndType); writer.WriteUInt16(10); writer.WriteUInt16(11); // #12
+        writer.WriteByte((byte)ConstantTag.Methodref); writer.WriteUInt16(9); writer.WriteUInt16(12); // #13
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("getContextClassLoader"); // #14
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("()Ljava/lang/ClassLoader;"); // #15
+        writer.WriteByte((byte)ConstantTag.NameAndType); writer.WriteUInt16(14); writer.WriteUInt16(15); // #16
+        writer.WriteByte((byte)ConstantTag.Methodref); writer.WriteUInt16(9); writer.WriteUInt16(16); // #17
+
+        writer.WriteUInt16(0x0001); // public
+        writer.WriteUInt16(2); // this
+        writer.WriteUInt16(4); // super
+
+        writer.WriteUInt16(0); // interfaces
+        writer.WriteUInt16(0); // fields
+        writer.WriteUInt16(1); // methods
+
+        WriteTcclMethod(writer, methodNameIndex: 5, descriptorIndex: 6, currentThreadMethodRefIndex: 13, getContextMethodRefIndex: 17);
+
+        writer.WriteUInt16(0); // class attributes
+
+        return buffer.ToArray();
+    }
+
+    private static void WriteClassFileHeader(BigEndianWriter writer, ushort constantPoolCount)
+    {
+        writer.WriteUInt32(0xCAFEBABE);
+        writer.WriteUInt16(0);
+        writer.WriteUInt16(52);
+        writer.WriteUInt16(constantPoolCount);
+    }
+
+    private static void WriteInvokeMethod(BigEndianWriter writer, ushort methodNameIndex, ushort descriptorIndex, ushort ldcIndex, ushort methodRefIndex)
+    {
+        writer.WriteUInt16(0x0009); // public static
+        writer.WriteUInt16(methodNameIndex);
+        writer.WriteUInt16(descriptorIndex);
+        writer.WriteUInt16(1); // attributes_count
+
+        writer.WriteUInt16(7); // "Code"
+        using var codeBuffer = new MemoryStream();
+        using (var codeWriter = new BigEndianWriter(codeBuffer))
+        {
+            codeWriter.WriteUInt16(1); // max_stack
+            codeWriter.WriteUInt16(0); // max_locals
+            codeWriter.WriteUInt32(6); // code_length
+            codeWriter.WriteByte(0x12);
+            codeWriter.WriteByte((byte)ldcIndex);
+            codeWriter.WriteByte(0xB8);
+            codeWriter.WriteUInt16(methodRefIndex);
+            codeWriter.WriteByte(0xB1);
+            codeWriter.WriteUInt16(0); // exception table length
+            codeWriter.WriteUInt16(0); // code attributes
+        }
+
+        var codeBytes = codeBuffer.ToArray();
+        writer.WriteUInt32((uint)codeBytes.Length);
+        writer.WriteBytes(codeBytes);
+    }
+
+    private static void WriteTcclMethod(BigEndianWriter writer, ushort methodNameIndex, ushort descriptorIndex, ushort currentThreadMethodRefIndex, ushort getContextMethodRefIndex)
+    {
+        writer.WriteUInt16(0x0009);
+        writer.WriteUInt16(methodNameIndex);
+        writer.WriteUInt16(descriptorIndex);
+        writer.WriteUInt16(1);
+
+        writer.WriteUInt16(7);
+        using var codeBuffer = new MemoryStream();
+        using (var codeWriter = new BigEndianWriter(codeBuffer))
+        {
+            codeWriter.WriteUInt16(2);
+            codeWriter.WriteUInt16(0);
+            codeWriter.WriteUInt32(8);
+            codeWriter.WriteByte(0xB8);
+            codeWriter.WriteUInt16(currentThreadMethodRefIndex);
+            codeWriter.WriteByte(0xB6);
+            codeWriter.WriteUInt16(getContextMethodRefIndex);
+            codeWriter.WriteByte(0x57);
+            codeWriter.WriteByte(0xB1);
+            codeWriter.WriteUInt16(0);
+            codeWriter.WriteUInt16(0);
+        }
+
+        var codeBytes = codeBuffer.ToArray();
+        writer.WriteUInt32((uint)codeBytes.Length);
+        writer.WriteBytes(codeBytes);
+    }
+
+    private static void WriteResourceLookupMethod(
+        BigEndianWriter writer,
+        ushort methodNameIndex,
+        ushort descriptorIndex,
+        ushort systemLoaderMethodRefIndex,
+        ushort stringIndex,
+        ushort getResourceMethodRefIndex)
+    {
+        writer.WriteUInt16(0x0009);
+        writer.WriteUInt16(methodNameIndex);
+        writer.WriteUInt16(descriptorIndex);
+        writer.WriteUInt16(1);
+
+        writer.WriteUInt16(7);
+        using var codeBuffer = new MemoryStream();
+        using (var codeWriter = new BigEndianWriter(codeBuffer))
+        {
+            codeWriter.WriteUInt16(2);
+            codeWriter.WriteUInt16(0);
+            codeWriter.WriteUInt32(10);
+            codeWriter.WriteByte(0xB8); // invokestatic
+            codeWriter.WriteUInt16(systemLoaderMethodRefIndex);
+            codeWriter.WriteByte(0x12); // ldc
+            codeWriter.WriteByte((byte)stringIndex);
+            codeWriter.WriteByte(0xB6); // invokevirtual
+            codeWriter.WriteUInt16(getResourceMethodRefIndex);
+            codeWriter.WriteByte(0x57);
+            codeWriter.WriteByte(0xB1);
+            codeWriter.WriteUInt16(0);
+            codeWriter.WriteUInt16(0);
+        }
+
+        var codeBytes = codeBuffer.ToArray();
+        writer.WriteUInt32((uint)codeBytes.Length);
+        writer.WriteBytes(codeBytes);
+    }
+
+    private sealed class BigEndianWriter : IDisposable
+    {
+        private readonly BinaryWriter _writer;
+
+        public BigEndianWriter(Stream stream)
+        {
+            _writer = new BinaryWriter(stream, Encoding.UTF8, leaveOpen: true);
+        }
+
+        public void WriteByte(byte value) => _writer.Write(value);
+
+        public void WriteBytes(byte[] data) => _writer.Write(data);
+
+        public void WriteUInt16(ushort value)
+        {
+            Span<byte> buffer = stackalloc byte[2];
+            BinaryPrimitives.WriteUInt16BigEndian(buffer, value);
+            _writer.Write(buffer);
+        }
+
+        public void WriteUInt32(uint value)
+        {
+            Span<byte> buffer = stackalloc byte[4];
+            BinaryPrimitives.WriteUInt32BigEndian(buffer, value);
+            _writer.Write(buffer);
+        }
+
+        public void WriteUtf8(string value)
+        {
+            var bytes = Encoding.UTF8.GetBytes(value);
+            WriteUInt16((ushort)bytes.Length);
+            _writer.Write(bytes);
+        }
+
+        public void Dispose() => _writer.Dispose();
+    }
+
+    /// <summary>
+    /// Creates a class file with a native method declaration.
+    /// </summary>
+    public static byte[] CreateNativeMethodClass(string internalClassName, string nativeMethodName)
+    {
+        using var buffer = new MemoryStream();
+        using var writer = new BigEndianWriter(buffer);
+
+        WriteClassFileHeader(writer, constantPoolCount: 8);
+
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8(internalClassName); // #1
+        writer.WriteByte((byte)ConstantTag.Class); writer.WriteUInt16(1); // #2
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("java/lang/Object"); // #3
+        writer.WriteByte((byte)ConstantTag.Class); writer.WriteUInt16(3); // #4
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8(nativeMethodName); // #5
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("()V"); // #6
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("Code"); // #7
+
+        writer.WriteUInt16(0x0001); // public
+        writer.WriteUInt16(2); // this class
+        writer.WriteUInt16(4); // super class
+
+        writer.WriteUInt16(0); // interfaces
+        writer.WriteUInt16(0); // fields
+        writer.WriteUInt16(1); // methods
+
+        // native method: access_flags = ACC_PUBLIC | ACC_NATIVE (0x0101)
+        writer.WriteUInt16(0x0101);
+        writer.WriteUInt16(5); // name
+        writer.WriteUInt16(6); // descriptor
+        writer.WriteUInt16(0); // no attributes (native methods have no Code)
+
+        writer.WriteUInt16(0); // class attributes
+
+        return buffer.ToArray();
+    }
+
+    /// <summary>
+    /// Creates a class file with a System.loadLibrary call.
+    /// </summary>
+    public static byte[] CreateSystemLoadLibraryInvoker(string internalClassName, string libraryName)
+    {
+        using var buffer = new MemoryStream();
+        using var writer = new BigEndianWriter(buffer);
+
+        WriteClassFileHeader(writer, constantPoolCount: 16);
+
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8(internalClassName); // #1
+        writer.WriteByte((byte)ConstantTag.Class); writer.WriteUInt16(1); // #2
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("java/lang/Object"); // #3
+        writer.WriteByte((byte)ConstantTag.Class); writer.WriteUInt16(3); // #4
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("loadNative"); // #5
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("()V"); // #6
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("Code"); // #7
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8(libraryName); // #8
+        writer.WriteByte((byte)ConstantTag.String); writer.WriteUInt16(8); // #9
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("java/lang/System"); // #10
+        writer.WriteByte((byte)ConstantTag.Class); writer.WriteUInt16(10); // #11
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("loadLibrary"); // #12
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("(Ljava/lang/String;)V"); // #13
+        writer.WriteByte((byte)ConstantTag.NameAndType); writer.WriteUInt16(12); writer.WriteUInt16(13); // #14
+        writer.WriteByte((byte)ConstantTag.Methodref); writer.WriteUInt16(11); writer.WriteUInt16(14); // #15
+
+        writer.WriteUInt16(0x0001); // public
+        writer.WriteUInt16(2); // this class
+        writer.WriteUInt16(4); // super class
+
+        writer.WriteUInt16(0); // interfaces
+        writer.WriteUInt16(0); // fields
+        writer.WriteUInt16(1); // methods
+
+        WriteInvokeStaticMethod(writer, methodNameIndex: 5, descriptorIndex: 6, ldcIndex: 9, methodRefIndex: 15);
+
+        writer.WriteUInt16(0); // class attributes
+
+        return buffer.ToArray();
+    }
+
+    /// <summary>
+    /// Creates a class file with a System.load call (loads by path).
+    /// </summary>
+    public static byte[] CreateSystemLoadInvoker(string internalClassName, string libraryPath)
+    {
+        using var buffer = new MemoryStream();
+        using var writer = new BigEndianWriter(buffer);
+
+        WriteClassFileHeader(writer, constantPoolCount: 16);
+
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8(internalClassName); // #1
+        writer.WriteByte((byte)ConstantTag.Class); writer.WriteUInt16(1); // #2
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("java/lang/Object"); // #3
+        writer.WriteByte((byte)ConstantTag.Class); writer.WriteUInt16(3); // #4
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("loadNative"); // #5
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("()V"); // #6
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("Code"); // #7
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8(libraryPath); // #8
+        writer.WriteByte((byte)ConstantTag.String); writer.WriteUInt16(8); // #9
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("java/lang/System"); // #10
+        writer.WriteByte((byte)ConstantTag.Class); writer.WriteUInt16(10); // #11
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("load"); // #12
+        writer.WriteByte((byte)ConstantTag.Utf8); writer.WriteUtf8("(Ljava/lang/String;)V"); // #13
+        writer.WriteByte((byte)ConstantTag.NameAndType); writer.WriteUInt16(12); writer.WriteUInt16(13); // #14
+        writer.WriteByte((byte)ConstantTag.Methodref); writer.WriteUInt16(11); writer.WriteUInt16(14); // #15
+
+        writer.WriteUInt16(0x0001); // public
+        writer.WriteUInt16(2); // this class
+        writer.WriteUInt16(4); // super class
+
+        writer.WriteUInt16(0); // interfaces
+        writer.WriteUInt16(0); // fields
+        writer.WriteUInt16(1); // methods
+
+        WriteInvokeStaticMethod(writer, methodNameIndex: 5, descriptorIndex: 6, ldcIndex: 9, methodRefIndex: 15);
+
+        writer.WriteUInt16(0); // class attributes
+
+        return buffer.ToArray();
+    }
+
+    private static void WriteInvokeStaticMethod(BigEndianWriter writer, ushort methodNameIndex, ushort descriptorIndex, ushort ldcIndex, ushort methodRefIndex)
+    {
+        writer.WriteUInt16(0x0009); // public static
+        writer.WriteUInt16(methodNameIndex);
+        writer.WriteUInt16(descriptorIndex);
+        writer.WriteUInt16(1); // attributes_count
+
+        writer.WriteUInt16(7); // "Code"
+        using var codeBuffer = new MemoryStream();
+        using (var codeWriter = new BigEndianWriter(codeBuffer))
+        {
+            codeWriter.WriteUInt16(1); // max_stack
+            codeWriter.WriteUInt16(0); // max_locals
+            codeWriter.WriteUInt32(6); // code_length
+            codeWriter.WriteByte(0x12); // ldc
+            codeWriter.WriteByte((byte)ldcIndex);
+            codeWriter.WriteByte(0xB8); // invokestatic
+            codeWriter.WriteUInt16(methodRefIndex);
+            codeWriter.WriteByte(0xB1); // return
+            codeWriter.WriteUInt16(0); // exception table length
+            codeWriter.WriteUInt16(0); // code attributes
+        }
+
+        var codeBytes = codeBuffer.ToArray();
+        writer.WriteUInt32((uint)codeBytes.Length);
+        writer.WriteBytes(codeBytes);
+    }
+
+    private enum ConstantTag : byte
+    {
+        Utf8 = 1,
+        Integer = 3,
+        Float = 4,
+        Long = 5,
+        Double = 6,
+        Class = 7,
+        String = 8,
+        Fieldref = 9,
+        Methodref = 10,
+        InterfaceMethodref = 11,
+        NameAndType = 12,
+    }
+}

src/Scanner/__Tests/StellaOps.Scanner.Analyzers.Lang.Tests/TestUtilities/JavaFixtureBuilder.cs

@@ -1,8 +1,8 @@
-using System.IO.Compression;
-using System.Text;
-
-namespace StellaOps.Scanner.Analyzers.Lang.Tests.TestUtilities;
-
+using System.IO.Compression;
+using System.Text;
+
+namespace StellaOps.Scanner.Analyzers.Lang.Tests.TestUtilities;
+
 public static class JavaFixtureBuilder
 {
     private static readonly DateTimeOffset DefaultTimestamp = new(2024, 01, 01, 0, 0, 0, TimeSpan.Zero);

src/Scanner/__Tests/StellaOps.Scanner.Analyzers.Lang.Tests/TestUtilities/TestPaths.cs

@@ -1,40 +1,40 @@
-namespace StellaOps.Scanner.Analyzers.Lang.Tests.TestUtilities;
-
-public static class TestPaths
-{
-    public static string ResolveFixture(params string[] segments)
-    {
-        var baseDirectory = AppContext.BaseDirectory;
-        var parts = new List<string> { baseDirectory };
-        parts.AddRange(new[] { "Fixtures" });
-        parts.AddRange(segments);
-        return Path.GetFullPath(Path.Combine(parts.ToArray()));
-    }
-
-    public static string CreateTemporaryDirectory()
-    {
-        var root = Path.Combine(AppContext.BaseDirectory, "tmp", Guid.NewGuid().ToString("N"));
-        Directory.CreateDirectory(root);
-        return root;
-    }
-
-    public static void SafeDelete(string directory)
-    {
-        if (string.IsNullOrWhiteSpace(directory) || !Directory.Exists(directory))
-        {
-            return;
-        }
-
-        try
-        {
-            Directory.Delete(directory, recursive: true);
-        }
-        catch
-        {
-            // Swallow cleanup exceptions to avoid masking test failures.
-        }
-    }
-
+namespace StellaOps.Scanner.Analyzers.Lang.Tests.TestUtilities;
+
+public static class TestPaths
+{
+    public static string ResolveFixture(params string[] segments)
+    {
+        var baseDirectory = AppContext.BaseDirectory;
+        var parts = new List<string> { baseDirectory };
+        parts.AddRange(new[] { "Fixtures" });
+        parts.AddRange(segments);
+        return Path.GetFullPath(Path.Combine(parts.ToArray()));
+    }
+
+    public static string CreateTemporaryDirectory()
+    {
+        var root = Path.Combine(AppContext.BaseDirectory, "tmp", Guid.NewGuid().ToString("N"));
+        Directory.CreateDirectory(root);
+        return root;
+    }
+
+    public static void SafeDelete(string directory)
+    {
+        if (string.IsNullOrWhiteSpace(directory) || !Directory.Exists(directory))
+        {
+            return;
+        }
+
+        try
+        {
+            Directory.Delete(directory, recursive: true);
+        }
+        catch
+        {
+            // Swallow cleanup exceptions to avoid masking test failures.
+        }
+    }
+
     public static string ResolveProjectRoot()
     {
         var directory = AppContext.BaseDirectory;
@@ -47,8 +47,8 @@ public static class TestPaths
             }
 
             directory = Path.GetDirectoryName(directory) ?? string.Empty;
-        }
-
-        throw new InvalidOperationException("Unable to locate project root.");
-    }
-}
+        }
+
+        throw new InvalidOperationException("Unable to locate project root.");
+    }
+}