Migrate from Mocha to Jest

Author: miles170

.eslintignore

@@ -3,4 +3,3 @@ dist/
 types/
 /test/restDocs/*.json
 /test/restDocs/results/
-/test/restDocs/snapshots/

.eslintrc.cjs

@@ -11,8 +11,5 @@ module.exports = {
     sourceType: 'module',
     project: './tsconfig.json',
   },
-  env: {
-    mocha: true,
-  },
   root: true,
 };

.mocharc.json

@@ -4,4 +4,3 @@
 /test/*cache.json
 /test/restDocs/*.json
 /test/restDocs/results/
-/test/restDocs/snapshots/

.prettierignore

@@ -118,8 +118,7 @@ GAPI_MAX_PARALLEL=3 npm run lint
 
 #### Unit (WIP)
 
-Unit tests for this generator project are written with [Jasmine](https://jasmine.github.io/) and
-[Mocha](https://mochajs.org/). They can be run via:
+Unit tests for this generator project are written with [Jest](https://jestjs.io/). They can be run via:
 
 ```sh
 npm run test

README.md

@@ -6,5 +6,5 @@ const files = (await sh.runSh('npx -y ls-ignore --paths')).stdout
   .filter(x => x.trim() !== '')
   .filter(x => !(x.startsWith('test/restDocs') && x.endsWith('.json')))
   .filter(x => !x.startsWith('test/restDocs/results/'))
-  .filter(x => !x.startsWith('test/restDocs/snapshots/'));
+  .filter(x => !x.startsWith('test/restDocs/__snapshots__/'));
 await sh.runSh(`npx -y cspell ${files.join(' ')}`);

bin/cspell.ts

@@ -0,0 +1,19 @@
+import {JestConfigWithTsJest} from 'ts-jest';
+import {defaultsESM} from 'ts-jest/presets';
+
+const defaultsESMPatched = defaultsESM;
+// TODO: remove the following once https://github.com/kulshekhar/ts-jest/pull/3833 is released
+defaultsESMPatched.transform!['^.+\\.tsx?$'] = ['ts-jest', {useESM: true}];
+// TODO: remove the following once https://github.com/kulshekhar/ts-jest/pull/3833 is released
+defaultsESMPatched.extensionsToTreatAsEsm =
+  defaultsESMPatched.extensionsToTreatAsEsm?.filter(x => x !== '.mts');
+
+const config: JestConfigWithTsJest = {
+  ...defaultsESMPatched,
+  moduleNameMapper: {
+    '^(\\.{1,2}/.*)\\.js$': '$1',
+  },
+  testRegex: '/test/.*(?<!\\.integration)\\.spec\\.ts$',
+};
+
+export default config;

jest.config.ts

@@ -0,0 +1,9 @@
+import {JestConfigWithTsJest} from 'ts-jest';
+import defaultConfig from './jest.config';
+
+const config: JestConfigWithTsJest = {
+  ...defaultConfig,
+  testRegex: '/test/.*\\.integration\\.spec\\.ts$',
+};
+
+export default config;