Frontend gaps fill work. Testing fixes work. Auditing in progress.

src/Signals/__Tests/StellaOps.Signals.Tests/Scm/ScmEventMapperTests.cs

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+// <copyright file="ScmEventMapperTests.cs" company="Stella Operations">
+// Copyright (c) Stella Operations. Licensed under AGPL-3.0-or-later.
+// </copyright>
+
+using System.Text.Json;
+using StellaOps.Signals.Scm.Models;
+using StellaOps.Signals.Scm.Webhooks;
+using Xunit;
+
+namespace StellaOps.Signals.Tests.Scm;
+
+/// <summary>
+/// Unit tests for SCM event mappers.
+/// @sprint SPRINT_20251229_013_SIGNALS_scm_ci_connectors
+/// </summary>
+public sealed class ScmEventMapperTests
+{
+    #region GitHub Event Mapper Tests
+
+    [Fact]
+    public void GitHubMapper_PushEvent_MapsCorrectly()
+    {
+        // Arrange
+        var mapper = new GitHubEventMapper();
+        var payload = CreateGitHubPushPayload();
+
+        // Act
+        var result = mapper.Map("push", "delivery-123", payload);
+
+        // Assert
+        Assert.NotNull(result);
+        Assert.Equal(ScmProvider.GitHub, result.Provider);
+        Assert.Equal(ScmEventType.Push, result.EventType);
+        Assert.Equal("delivery-123", result.EventId);
+        Assert.Equal("refs/heads/main", result.Ref);
+        Assert.NotNull(result.Repository);
+        Assert.Equal("owner/repo", result.Repository.FullName);
+    }
+
+    [Fact]
+    public void GitHubMapper_PullRequestMergedEvent_MapsCorrectly()
+    {
+        // Arrange
+        var mapper = new GitHubEventMapper();
+        var payload = CreateGitHubPrMergedPayload();
+
+        // Act
+        var result = mapper.Map("pull_request", "delivery-456", payload);
+
+        // Assert
+        Assert.NotNull(result);
+        Assert.Equal(ScmProvider.GitHub, result.Provider);
+        Assert.Equal(ScmEventType.PullRequestMerged, result.EventType);
+        Assert.NotNull(result.PullRequest);
+        Assert.Equal(42, result.PullRequest.Number);
+        Assert.Equal("closed", result.PullRequest.State);
+    }
+
+    [Fact]
+    public void GitHubMapper_ReleaseEvent_MapsCorrectly()
+    {
+        // Arrange
+        var mapper = new GitHubEventMapper();
+        var payload = CreateGitHubReleasePayload();
+
+        // Act
+        var result = mapper.Map("release", "delivery-789", payload);
+
+        // Assert
+        Assert.NotNull(result);
+        Assert.Equal(ScmProvider.GitHub, result.Provider);
+        Assert.Equal(ScmEventType.ReleasePublished, result.EventType);
+        Assert.NotNull(result.Release);
+        Assert.Equal("v1.0.0", result.Release.TagName);
+    }
+
+    [Fact]
+    public void GitHubMapper_UnknownEvent_ReturnsUnknownType()
+    {
+        // Arrange
+        var mapper = new GitHubEventMapper();
+        var payload = JsonSerializer.SerializeToElement(new { });
+
+        // Act
+        var result = mapper.Map("unknown_event", "delivery-000", payload);
+
+        // Assert
+        Assert.NotNull(result);
+        Assert.Equal(ScmEventType.Unknown, result.EventType);
+    }
+
+    #endregion
+
+    #region GitLab Event Mapper Tests
+
+    [Fact]
+    public void GitLabMapper_PushEvent_MapsCorrectly()
+    {
+        // Arrange
+        var mapper = new GitLabEventMapper();
+        var payload = CreateGitLabPushPayload();
+
+        // Act
+        var result = mapper.Map("Push Hook", "delivery-123", payload);
+
+        // Assert
+        Assert.NotNull(result);
+        Assert.Equal(ScmProvider.GitLab, result.Provider);
+        Assert.Equal(ScmEventType.Push, result.EventType);
+        Assert.Equal("refs/heads/main", result.Ref);
+    }
+
+    [Fact]
+    public void GitLabMapper_MergeRequestEvent_MapsCorrectly()
+    {
+        // Arrange
+        var mapper = new GitLabEventMapper();
+        var payload = CreateGitLabMrMergedPayload();
+
+        // Act
+        var result = mapper.Map("Merge Request Hook", "delivery-456", payload);
+
+        // Assert
+        Assert.NotNull(result);
+        Assert.Equal(ScmProvider.GitLab, result.Provider);
+        Assert.Equal(ScmEventType.PullRequestMerged, result.EventType);
+    }
+
+    #endregion
+
+    #region Gitea Event Mapper Tests
+
+    [Fact]
+    public void GiteaMapper_PushEvent_MapsCorrectly()
+    {
+        // Arrange
+        var mapper = new GiteaEventMapper();
+        var payload = CreateGiteaPushPayload();
+
+        // Act
+        var result = mapper.Map("push", "delivery-123", payload);
+
+        // Assert
+        Assert.NotNull(result);
+        Assert.Equal(ScmProvider.Gitea, result.Provider);
+        Assert.Equal(ScmEventType.Push, result.EventType);
+    }
+
+    #endregion
+
+    #region Helper Methods
+
+    private static JsonElement CreateGitHubPushPayload()
+    {
+        var payload = new
+        {
+            @ref = "refs/heads/main",
+            after = "abc123def456",
+            repository = new
+            {
+                id = 12345,
+                full_name = "owner/repo",
+                clone_url = "https://github.com/owner/repo.git"
+            },
+            sender = new
+            {
+                login = "testuser",
+                id = 1
+            }
+        };
+        return JsonSerializer.SerializeToElement(payload);
+    }
+
+    private static JsonElement CreateGitHubPrMergedPayload()
+    {
+        var payload = new
+        {
+            action = "closed",
+            pull_request = new
+            {
+                number = 42,
+                merged = true,
+                title = "Test PR",
+                head = new { sha = "abc123" },
+                @base = new { @ref = "main" }
+            },
+            repository = new
+            {
+                id = 12345,
+                full_name = "owner/repo"
+            }
+        };
+        return JsonSerializer.SerializeToElement(payload);
+    }
+
+    private static JsonElement CreateGitHubReleasePayload()
+    {
+        var payload = new
+        {
+            action = "published",
+            release = new
+            {
+                tag_name = "v1.0.0",
+                name = "Release 1.0.0",
+                draft = false,
+                prerelease = false
+            },
+            repository = new
+            {
+                id = 12345,
+                full_name = "owner/repo"
+            }
+        };
+        return JsonSerializer.SerializeToElement(payload);
+    }
+
+    private static JsonElement CreateGitLabPushPayload()
+    {
+        var payload = new
+        {
+            @ref = "refs/heads/main",
+            after = "abc123def456",
+            project = new
+            {
+                id = 12345,
+                path_with_namespace = "group/project",
+                git_http_url = "https://gitlab.com/group/project.git"
+            },
+            user_name = "testuser"
+        };
+        return JsonSerializer.SerializeToElement(payload);
+    }
+
+    private static JsonElement CreateGitLabMrMergedPayload()
+    {
+        var payload = new
+        {
+            object_kind = "merge_request",
+            object_attributes = new
+            {
+                iid = 42,
+                state = "merged",
+                action = "merge",
+                title = "Test MR"
+            },
+            project = new
+            {
+                id = 12345,
+                path_with_namespace = "group/project"
+            }
+        };
+        return JsonSerializer.SerializeToElement(payload);
+    }
+
+    private static JsonElement CreateGiteaPushPayload()
+    {
+        var payload = new
+        {
+            @ref = "refs/heads/main",
+            after = "abc123def456",
+            repository = new
+            {
+                id = 12345,
+                full_name = "owner/repo",
+                clone_url = "https://gitea.example.com/owner/repo.git"
+            },
+            sender = new
+            {
+                login = "testuser"
+            }
+        };
+        return JsonSerializer.SerializeToElement(payload);
+    }
+
+    #endregion
+}