test : added unit tests for activity-formatter DiscussionCommentEvent

test/activity-formatter.test.ts

@@ -1,20 +1,106 @@
 import { describe, it, expect } from "vitest";
 import { formatActivity } from "@/lib/activity-formatter";
+
 describe("formatActivity", () => {
   it("formats PushEvent with 1 commit", () => {
     const event = {
-  type: "PushEvent",
-  repo: {
-    name: "test/repo",
-  },
-  payload: {
-    commits: [{}],
-    ref: "refs/heads/main",
-  },
-};
-const result = formatActivity(event as any);
-
-expect(result?.title).toBe("Pushed 1 commit to main");
+      type: "PushEvent",
+      repo: {
+        name: "test/repo",
+      },
+      payload: {
+        commits: [{}],
+        ref: "refs/heads/main",
+      },
+    };
+    const result = formatActivity(event as any);
+
+    expect(result?.title).toBe("Pushed 1 commit to main");
+  });
+
+  it("formats DiscussionCommentEvent correctly", () => {
+    const event = {
+      id: "123456",
+      type: "DiscussionCommentEvent",
+      created_at: "2024-01-15T10:00:00Z",
+      repo: {
+        name: "test/discussion-repo",
+      },
+      payload: {
+        discussion: {
+          html_url: "https://github.com/test/discussion-repo/discussions/42",
+          number: 42,
+          title: "How to contribute",
+        },
+      },
+    };
+    const result = formatActivity(event as any);
+
+    expect(result?.type).toBe("discussion");
+    expect(result?.title).toBe("Commented on discussion #42");
+    expect(result?.subtitle).toBe("How to contribute");
+  });
+
+  it("handles missing payload fields gracefully", () => {
+    const event = {
+      id: "789",
+      type: "PushEvent",
+      created_at: "2024-01-15T10:00:00Z",
+      repo: {
+        name: "test/repo",
+      },
+      payload: {},
+    };
+    const result = formatActivity(event as any);
+
+    expect(result?.title).toBe("Pushed 0 commits to default branch");
+  });
+
+  it("returns null for events with empty repo name", () => {
+    const event = {
+      id: "999",
+      type: "PushEvent",
+      created_at: "2024-01-15T10:00:00Z",
+      repo: {
+        name: "",
+      },
+      payload: {
+        commits: [{ sha: "abc123" }],
+      },
+    };
+    const result = formatActivity(event as any);
+
+    expect(result).toBeNull();
+  });
+
+  it("handles DiscussionEvent with missing discussion fields", () => {
+    const event = {
+      id: "456",
+      type: "DiscussionEvent",
+      created_at: "2024-01-15T10:00:00Z",
+      repo: {
+        name: "test/repo",
+      },
+      payload: {},
+    };
+    const result = formatActivity(event as any);
+
+    expect(result).not.toBeNull();
+    expect(result?.title).toContain("Opened discussion");
+  });
+
+  it("returns null for ReleaseEvent with missing release fields", () => {
+    const event = {
+      id: "789",
+      type: "ReleaseEvent",
+      created_at: "2024-01-15T10:00:00Z",
+      repo: {
+        name: "test/repo",
+      },
+      payload: {},
+    };
+    const result = formatActivity(event as any);
 
+    expect(result?.title).toBe("Published release");
   });
 });