feat: Add snap_trackError and snap_trackEvent support to snaps-jest

packages/examples/packages/preinstalled/snap.manifest.json

@@ -7,7 +7,7 @@
     "url": "https://github.com/MetaMask/snaps.git"
   },
   "source": {
-    "shasum": "mTAP3og3khORsMc/TjpVQNieT8ORJC3h01SxkDOFqLE=",
+    "shasum": "3ngRXZHVyqZB3sk6u9Hpj2V4SUjrhxb6D/aqesFSmeY=",
     "location": {
       "npm": {
         "filePath": "dist/bundle.js",

packages/examples/packages/preinstalled/src/index.test.tsx

@@ -87,6 +87,43 @@ describe('onRpcRequest', () => {
       });
     });
   });
+
+  describe('trackError', () => {
+    it('tracks an error', async () => {
+      const { request } = await installSnap();
+
+      const response = await request({
+        method: 'trackError',
+      });
+
+      expect(response).toRespondWith(null);
+      expect(response).toTrackError(
+        expect.objectContaining({
+          name: 'TestError',
+          message: 'This is a test error.',
+        }),
+      );
+    });
+  });
+
+  describe('trackEvent', () => {
+    it('tracks an event', async () => {
+      const { request } = await installSnap();
+
+      const response = await request({
+        method: 'trackEvent',
+      });
+
+      expect(response).toRespondWith(null);
+      expect(response).toTrackEvent({
+        event: 'Test Event',
+        properties: {
+          // eslint-disable-next-line @typescript-eslint/naming-convention
+          test_property: 'test value',
+        },
+      });
+    });
+  });
 });
 
 describe('onSettingsPage', () => {

packages/examples/packages/preinstalled/src/index.tsx

@@ -64,6 +64,22 @@ export const onRpcRequest: OnRpcRequestHandler = async ({ request }) => {
       });
     }
 
+    case 'trackEvent': {
+      return await snap.request({
+        method: 'snap_trackEvent',
+        params: {
+          event: {
+            event: 'Test Event',
+            properties: {
+              // Event properties must be snake_case.
+              // eslint-disable-next-line @typescript-eslint/naming-convention
+              test_property: 'test value',
+            },
+          },
+        },
+      });
+    }
+
     case 'startTrace':
       return await snap.request({
         method: 'snap_startTrace',

packages/snaps-controllers/package.json

@@ -100,7 +100,7 @@
     "cron-parser": "^4.5.0",
     "fast-deep-equal": "^3.1.3",
     "get-npm-tarball-url": "^2.0.3",
-    "immer": "^9.0.6",
+    "immer": "^9.0.21",
     "luxon": "^3.5.0",
     "nanoid": "^3.3.10",
     "readable-stream": "^3.6.2",

packages/snaps-jest/src/global.ts

@@ -74,6 +74,39 @@ interface SnapsMatchers {
    * expect(ui).toRender(panel([heading('Hello, world!')]));
    */
   toRender(component: ComponentOrElement): void;
+
+  /**
+   * Assert that the Snap tracked an error with the expected parameters. This
+   * is equivalent to calling
+   * `expect(response.tracked.errors).toContainEqual(error)`.
+   *
+   * @param error - The expected error parameters.
+   * @throws If the snap did not track an error with the expected parameters.
+   * @example
+   * const response = await request({ method: 'foo' });
+   * expect(response).toTrackError({
+   *   name: 'Error',
+   *   message: 'This is an error.',
+   * });
+   */
+  toTrackError(error?: unknown): void;
+
+  /**
+   * Assert that the Snap tracked an event with the expected parameters. This
+   * is equivalent to calling
+   * `expect(response.tracked.events).toContainEqual(event)`.
+   *
+   * @param event - The expected event parameters.
+   * @throws If the snap did not track an event with the expected parameters.
+   * @example
+   * const response = await request({ method: 'foo' });
+   * expect(response).toTrackEvent({
+   *   event: 'bar',
+   *   properties: { baz: 'qux' },
+   *   sensitiveProperties: { quux: 'corge' },
+   * });
+   */
+  toTrackEvent(event?: unknown): void;
 }
 
 // Extend the `expect` interface with the new matchers. This is used when