stabilizaiton work - projects rework for maintenanceability and ui livening

src/__Libraries/__Tests/StellaOps.Cryptography.Kms.Tests/CloudKmsClientTests.Fixture.Gcp.cs

@@ -0,0 +1,65 @@
+using System.Text;
+using StellaOps.Cryptography.Kms;
+
+namespace StellaOps.Cryptography.Kms.Tests;
+
+public sealed partial class CloudKmsClientTests
+{
+    private sealed class TestGcpFacade : IGcpKmsFacade
+    {
+        private readonly EcdsaFixture _fixture;
+        private readonly DateTimeOffset _now;
+
+        public TestGcpFacade(EcdsaFixture fixture, DateTimeOffset now)
+        {
+            _fixture = fixture;
+            _now = now;
+        }
+
+        public string KeyName { get; } = "projects/demo/locations/global/keyRings/sample/cryptoKeys/attestor";
+        public string PrimaryVersion { get; } = "projects/demo/locations/global/keyRings/sample/cryptoKeys/attestor/cryptoKeyVersions/1";
+        public string SecondaryVersion { get; } = "projects/demo/locations/global/keyRings/sample/cryptoKeys/attestor/cryptoKeyVersions/2";
+
+        public byte[] LastDigest { get; private set; } = Array.Empty<byte>();
+
+        public Task<GcpCryptoKeyMetadata> GetCryptoKeyMetadataAsync(string keyName, CancellationToken cancellationToken)
+            => Task.FromResult(new GcpCryptoKeyMetadata(KeyName, PrimaryVersion, _now));
+
+        public Task<IReadOnlyList<GcpCryptoKeyVersionMetadata>> ListKeyVersionsAsync(string keyName, CancellationToken cancellationToken)
+        {
+            IReadOnlyList<GcpCryptoKeyVersionMetadata> versions = new[]
+            {
+                new GcpCryptoKeyVersionMetadata(PrimaryVersion, GcpCryptoKeyVersionState.Enabled, _now.AddDays(-2), null),
+                new GcpCryptoKeyVersionMetadata(SecondaryVersion, GcpCryptoKeyVersionState.Disabled, _now.AddDays(-10), _now.AddDays(-1)),
+            };
+
+            return Task.FromResult(versions);
+        }
+
+        public Task<GcpPublicKeyMaterial> GetPublicKeyAsync(string versionName, CancellationToken cancellationToken)
+        {
+            var pem = ToPem(_fixture.PublicSubjectInfo);
+            return Task.FromResult(new GcpPublicKeyMaterial(versionName, "EC_SIGN_P256_SHA256", pem));
+        }
+
+        public Task<GcpSignResult> SignAsync(string versionName, ReadOnlyMemory<byte> digest, CancellationToken cancellationToken)
+        {
+            LastDigest = digest.ToArray();
+            var signature = _fixture.SignDigest(digest.Span);
+            return Task.FromResult(new GcpSignResult(versionName, signature));
+        }
+
+        public void Dispose()
+        {
+        }
+
+        internal static string ToPem(byte[] subjectPublicKeyInfo)
+        {
+            var builder = new StringBuilder();
+            builder.AppendLine("-----BEGIN PUBLIC KEY-----");
+            builder.AppendLine(Convert.ToBase64String(subjectPublicKeyInfo, Base64FormattingOptions.InsertLineBreaks));
+            builder.AppendLine("-----END PUBLIC KEY-----");
+            return builder.ToString();
+        }
+    }
+}