fix(tests): Fix type errors in tests (#4908)

In the process of updating our jest dependencies, a significant number of type errors in tests suddenly appeared. (It seems newer versions of `jest` et al are stricter than the ones we had been using.) This fixes those errors, and changes our jest config so that it will throw an error on any types problems in a test, so we'll know to fix them locally. (Still to do: Fix our configuration so that the linter will catch the errors, so we don't have to actually run the tests to find them.)

Author: lobsterkatie

jest.config.js

@@ -11,7 +11,6 @@ module.exports = {
   globals: {
     'ts-jest': {
       tsconfig: '<rootDir>/tsconfig.test.json',
-      diagnostics: false,
     },
   },
   testPathIgnorePatterns: ['<rootDir>/build/', '<rootDir>/node_modules/'],

packages/browser/test/unit/integrations/linkederrors.test.ts

@@ -1,4 +1,4 @@
-import { ExtendedError } from '@sentry/types';
+import { Event as SentryEvent, Exception, ExtendedError } from '@sentry/types';
 import { createStackParser } from '@sentry/utils';
 
 import { BrowserClient } from '../../../src/client';
@@ -8,6 +8,12 @@ import { setupBrowserTransport } from '../../../src/transports';
 
 const parser = createStackParser(...defaultStackParsers);
 
+type EventWithException = SentryEvent & {
+  exception: {
+    values: Exception[];
+  };
+};
+
 describe('LinkedErrors', () => {
   describe('handler', () => {
     it('should bail out if event does not contain exception', () => {
@@ -44,7 +50,7 @@ describe('LinkedErrors', () => {
       return client.eventFromException(originalException).then(event => {
         const result = LinkedErrorsModule._handler(parser, 'cause', 5, event, {
           originalException,
-        });
+        }) as EventWithException;
 
         // It shouldn't include root exception, as it's already processed in the event by the main error handler
         expect(result.exception.values.length).toBe(3);
@@ -75,7 +81,7 @@ describe('LinkedErrors', () => {
       return client.eventFromException(originalException).then(event => {
         const result = LinkedErrorsModule._handler(parser, 'reason', 5, event, {
           originalException,
-        });
+        }) as EventWithException;
 
         expect(result.exception.values.length).toBe(3);
         expect(result.exception.values[0].type).toBe('SyntaxError');
@@ -103,7 +109,7 @@ describe('LinkedErrors', () => {
       return client.eventFromException(originalException).then(event => {
         const result = LinkedErrorsModule._handler(parser, 'cause', 2, event, {
           originalException,
-        });
+        }) as EventWithException;
 
         expect(result.exception.values.length).toBe(2);
         expect(result.exception.values[0].type).toBe('TypeError');

packages/browser/test/unit/mocks/simpletransport.ts

@@ -3,6 +3,7 @@ import { eventStatusFromHttpCode, resolvedSyncPromise } from '@sentry/utils';
 import { Event, Response } from '../../../src';
 import { BaseTransport } from '../../../src/transports';
 
+// @ts-ignore It's okay that we're not implementing the `_sendRequest()` method because we don't use it in our tests
 export class SimpleTransport extends BaseTransport {
   public sendEvent(_: Event): PromiseLike<Response> {
     return this._buffer.add(() =>

packages/browser/test/unit/transports/base.test.ts

@@ -3,6 +3,8 @@ import { BaseTransport } from '../../../src/transports/base';
 const testDsn = 'https://[email protected]/42';
 const envelopeEndpoint = 'https://sentry.io/api/42/envelope/?sentry_key=123&sentry_version=7';
 
+// @ts-ignore We're purposely not implementing the methods of the abstract `BaseTransport` class in order to be able to
+// assert on what the class provides and what it leaves to the concrete class to implement
 class SimpleTransport extends BaseTransport {}
 
 describe('BaseTransport', () => {
@@ -111,12 +113,12 @@ describe('BaseTransport', () => {
     });
   });
 
-  it('doesnt provide sendEvent() implementation', () => {
+  it('doesnt provide sendEvent() implementation', async () => {
     expect.assertions(1);
     const transport = new SimpleTransport({ dsn: testDsn });
 
     try {
-      void transport.sendEvent({});
+      await transport.sendEvent({});
     } catch (e) {
       expect(e).toBeDefined();
     }

packages/browser/test/unit/transports/new-xhr.test.ts

@@ -27,7 +27,7 @@ function createXHRMock() {
         case 'Retry-After':
           return '10';
         case `${retryAfterSeconds}`:
-          return;
+          return null;
         default:
           return `${retryAfterSeconds}:error:scope`;
       }
@@ -57,7 +57,7 @@ describe('NewXHRTransport', () => {
     expect(xhrMock.setRequestHeader).toHaveBeenCalledTimes(0);
     expect(xhrMock.send).toHaveBeenCalledTimes(0);
 
-    await Promise.all([transport.send(ERROR_ENVELOPE), (xhrMock as XMLHttpRequest).onreadystatechange(null)]);
+    await Promise.all([transport.send(ERROR_ENVELOPE), (xhrMock as XMLHttpRequest).onreadystatechange!({} as Event)]);
 
     expect(xhrMock.open).toHaveBeenCalledTimes(1);
     expect(xhrMock.open).toHaveBeenCalledWith('POST', DEFAULT_XHR_TRANSPORT_OPTIONS.url);
@@ -70,7 +70,7 @@ describe('NewXHRTransport', () => {
 
     const [res] = await Promise.all([
       transport.send(ERROR_ENVELOPE),
-      (xhrMock as XMLHttpRequest).onreadystatechange(null),
+      (xhrMock as XMLHttpRequest).onreadystatechange!({} as Event),
     ]);
 
     expect(res).toBeDefined();
@@ -80,7 +80,7 @@ describe('NewXHRTransport', () => {
   it('sets rate limit response headers', async () => {
     const transport = makeNewXHRTransport(DEFAULT_XHR_TRANSPORT_OPTIONS);
 
-    await Promise.all([transport.send(ERROR_ENVELOPE), (xhrMock as XMLHttpRequest).onreadystatechange(null)]);
+    await Promise.all([transport.send(ERROR_ENVELOPE), (xhrMock as XMLHttpRequest).onreadystatechange!({} as Event)]);
 
     expect(xhrMock.getResponseHeader).toHaveBeenCalledTimes(2);
     expect(xhrMock.getResponseHeader).toHaveBeenCalledWith('X-Sentry-Rate-Limits');
@@ -99,7 +99,7 @@ describe('NewXHRTransport', () => {
     };
 
     const transport = makeNewXHRTransport(options);
-    await Promise.all([transport.send(ERROR_ENVELOPE), (xhrMock as XMLHttpRequest).onreadystatechange(null)]);
+    await Promise.all([transport.send(ERROR_ENVELOPE), (xhrMock as XMLHttpRequest).onreadystatechange!({} as Event)]);
 
     expect(xhrMock.setRequestHeader).toHaveBeenCalledTimes(3);
     expect(xhrMock.setRequestHeader).toHaveBeenCalledWith('referrerPolicy', headers.referrerPolicy);

packages/core/test/lib/base.test.ts

@@ -69,7 +69,7 @@ describe('BaseClient', () => {
 
       const options = { dsn: PUBLIC_DSN };
       const client = new TestClient(options, setupTestTransport(options).transport);
-      expect(dsnToString(client.getDsn())).toBe(PUBLIC_DSN);
+      expect(dsnToString(client.getDsn()!)).toBe(PUBLIC_DSN);
     });
 
     test('allows missing Dsn', () => {

packages/core/test/mocks/client.ts

@@ -79,7 +79,7 @@ export function setupTestTransport(options: TestOptions): { transport: Transport
   const transportOptions = options.transportOptions ? options.transportOptions : { dsn: options.dsn };
 
   if (options.transport) {
-    return { transport: new this._options.transport(transportOptions) };
+    return { transport: new options.transport(transportOptions) };
   }
 
   return noop;

packages/gatsby/test/gatsby-browser.test.ts

@@ -1,7 +1,7 @@
 /* eslint-disable @typescript-eslint/no-var-requires */
 /* eslint-disable @typescript-eslint/no-explicit-any */
 
-const { onClientEntry } = require('../gatsby-browser');
+import { onClientEntry } from '../gatsby-browser';
 
 (global as any).__SENTRY_RELEASE__ = '683f3a6ab819d47d23abfca9a914c81f0524d35b';
 (global as any).__SENTRY_DSN__ = 'https://[email protected]/0';
@@ -153,7 +153,7 @@ describe('onClientEntry', () => {
 
   // Run this last to check for any test side effects
   it('does not run if plugin params are undefined', () => {
-    onClientEntry();
+    onClientEntry(undefined, undefined);
     expect(sentryInit).toHaveBeenCalledTimes(0);
     expect(tracingAddExtensionMethods).toHaveBeenCalledTimes(0);
   });

packages/gatsby/test/gatsby-node.test.ts

@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/no-var-requires */
 /* eslint-disable @typescript-eslint/no-explicit-any */
-const { onCreateWebpackConfig } = require('../gatsby-node');
+import { onCreateWebpackConfig } from '../gatsby-node';
 
 describe('onCreateWebpackConfig', () => {
   it('sets a webpack config', () => {
@@ -12,7 +12,9 @@ describe('onCreateWebpackConfig', () => {
       setWebpackConfig: jest.fn(),
     };
 
-    onCreateWebpackConfig({ plugins, actions });
+    const getConfig = jest.fn();
+
+    onCreateWebpackConfig({ plugins, actions, getConfig });
 
     expect(plugins.define).toHaveBeenCalledTimes(1);
     expect(plugins.define).toHaveBeenLastCalledWith({

packages/gatsby/test/setEnvVars.ts

@@ -1,2 +1,6 @@
 // eslint-disable-next-line @typescript-eslint/no-explicit-any, @typescript-eslint/no-unsafe-member-access
 process.env.SENTRY_RELEASE = '14abbb1678a2eb59d1a171ea33d630dd6c6eee70';
+
+// This file needs to have an import or an export to count as a module, which is necessary when using
+// the `isolatedModules` tsconfig option.
+export const _ = '';

packages/hub/test/global.test.ts

@@ -1,5 +1,9 @@
+import { getGlobalObject } from '@sentry/utils';
+
 import { getCurrentHub, getHubFromCarrier, Hub } from '../src';
 
+const global = getGlobalObject();
+
 describe('global', () => {
   test('getGlobalHub', () => {
     expect(getCurrentHub()).toBeTruthy();