chore: add tests

2026-04-22 02:55:04 -05:00 · 2026-03-11 18:05:32 +05:30
parent b27a54cb42
commit 449fb9ff7f
1 changed files with 94 additions and 0 deletions
@@ -0,0 +1,94 @@
+import { afterEach, beforeEach, describe, expect, test, vi } from "vitest";
+
+const mockInit = vi.fn();
+
+vi.mock("posthog-js", () => ({
+  default: {
+    init: mockInit,
+  },
+}));
+
+describe("instrumentation-client", () => {
+  beforeEach(() => {
+    vi.resetModules();
+    vi.clearAllMocks();
+  });
+
+  afterEach(() => {
+    vi.unstubAllEnvs();
+  });
+
+  test("initializes PostHog when NEXT_PUBLIC_POSTHOG_KEY is set", async () => {
+    vi.stubEnv("NEXT_PUBLIC_POSTHOG_KEY", "phc_test_key");
+    vi.stubEnv("NODE_ENV", "production");
+
+    await import("./instrumentation-client");
+
+    expect(mockInit).toHaveBeenCalledOnce();
+    expect(mockInit).toHaveBeenCalledWith("phc_test_key", {
+      api_host: "/ingest",
+      ui_host: "https://eu.posthog.com",
+      defaults: "2026-01-30",
+      capture_exceptions: true,
+      debug: false,
+    });
+  });
+
+  test("does not initialize PostHog when NEXT_PUBLIC_POSTHOG_KEY is not set", async () => {
+    vi.stubEnv("NEXT_PUBLIC_POSTHOG_KEY", "");
+
+    await import("./instrumentation-client");
+
+    expect(mockInit).not.toHaveBeenCalled();
+  });
+
+  test("sets debug to true in development", async () => {
+    vi.stubEnv("NEXT_PUBLIC_POSTHOG_KEY", "phc_test_key");
+    vi.stubEnv("NODE_ENV", "development");
+
+    await import("./instrumentation-client");
+
+    expect(mockInit).toHaveBeenCalledOnce();
+    expect(mockInit).toHaveBeenCalledWith("phc_test_key", {
+      api_host: "/ingest",
+      ui_host: "https://eu.posthog.com",
+      defaults: "2026-01-30",
+      capture_exceptions: true,
+      debug: true,
+    });
+  });
+
+  test("sets debug to false in production", async () => {
+    vi.stubEnv("NEXT_PUBLIC_POSTHOG_KEY", "phc_test_key");
+    vi.stubEnv("NODE_ENV", "production");
+
+    await import("./instrumentation-client");
+
+    expect(mockInit).toHaveBeenCalledOnce();
+    expect(mockInit.mock.calls[0][1].debug).toBe(false);
+  });
+
+  test("passes the correct api_host for reverse proxy", async () => {
+    vi.stubEnv("NEXT_PUBLIC_POSTHOG_KEY", "phc_test_key");
+
+    await import("./instrumentation-client");
+
+    expect(mockInit.mock.calls[0][1].api_host).toBe("/ingest");
+  });
+
+  test("enables capture_exceptions", async () => {
+    vi.stubEnv("NEXT_PUBLIC_POSTHOG_KEY", "phc_test_key");
+
+    await import("./instrumentation-client");
+
+    expect(mockInit.mock.calls[0][1].capture_exceptions).toBe(true);
+  });
+
+  test("does not initialize when key is empty string", async () => {
+    vi.stubEnv("NEXT_PUBLIC_POSTHOG_KEY", "");
+
+    await import("./instrumentation-client");
+
+    expect(mockInit).not.toHaveBeenCalled();
+  });
+});