```

src/discord/events/boostGreeting.test.ts

@@ -0,0 +1,35 @@
+import { describe, expect, test } from "bun:test";
+import { sendBoostGreeting } from "./boostGreeting";
+
+describe("sendBoostGreeting", () => {
+  test("sends boost greeting to the given channel", async () => {
+    const sent: string[] = [];
+    const channel = {
+      send: async (input: { content: string }): Promise<void> => {
+        sent.push(input.content);
+      },
+    };
+
+    await sendBoostGreeting(channel, "user-123", "channel-456");
+
+    expect(sent.length).toBe(1);
+    expect(sent[0]).toContain("Thank you for boosting");
+    expect(sent[0]).toContain("<@user-123>");
+    expect(sent[0]).toContain("/booster-role claim");
+    expect(sent[0]).toContain("<#channel-456>");
+  });
+
+  test("handles different user and channel IDs", async () => {
+    const sent: string[] = [];
+    const channel = {
+      send: async (input: { content: string }): Promise<void> => {
+        sent.push(input.content);
+      },
+    };
+
+    await sendBoostGreeting(channel, "other-user", "other-channel");
+
+    expect(sent[0]).toContain("<@other-user>");
+    expect(sent[0]).toContain("<#other-channel>");
+  });
+});