Así que estoy escribiendo una prueba unitaria usando "react-testing-library" en Jest y tengo este error:
Test suite failed to run ReferenceError: global is not defined at Object.<anonymous> (node_modules/@jest/core/node_modules/graceful-fs/graceful-fs.js:92:1) at Object.<anonymous> (node_modules/@jest/core/node_modules/expect/build/toThrowMatchers.js:10:24) at Object.<anonymous> (node_modules/@jest/core/node_modules/expect/build/index.js:35:48) at TestScheduler.scheduleTests (node_modules/@jest/core/build/TestScheduler.js:333:13) at runJest (node_modules/@jest/core/build/runJest.js:387:19) at _run10000 (node_modules/@jest/core/build/cli/index.js:408:7) at runCLI (node_modules/@jest/core/build/cli/index.js:261:3)Después de agregar "jest-environment-jsdom": "^27.0.6" como una dependencia de desarrollo, ese error desapareció.
Tengo este problema usando angular v13 con jest v27.2.3 y tsjest v27.0.5 y mi problema fue con la configuración de los archivos jest.config.ts
module.exports = { displayName: 'myApp', preset: '../../jest.preset.js', setupFilesAfterEnv: ['<rootDir>/src/test-setup.ts'], globals: { 'ts-jest': { tsconfig: '<rootDir>/tsconfig.spec.json', stringifyContentPathRegex: '\\.(html|svg)$' } }, coverageDirectory: '../../coverage/apps/myapp', transform: { '^.+\\.(ts|mjs|js|html)$': 'jest-preset-angular' }, transformIgnorePatterns: [ '<rootDir>/node_modules/(?!lodash-es/.*)', '<rootDir>/node_modules/(?!ng2-charts/.*)', '^.+\\.js$' ], moduleNameMapper: { '^lodash-es$': 'lodash' }, snapshotSerializers: [ 'jest-preset-angular/build/serializers/no-ng-attributes', 'jest-preset-angular/build/serializers/ng-snapshot', 'jest-preset-angular/build/serializers/html-comment' ] };o a libs
module.exports = { displayName: 'myLib', preset: '../../../jest.preset.js', setupFilesAfterEnv: ['<rootDir>/src/test-setup.ts'], globals: { 'ts-jest': { tsconfig: '<rootDir>/tsconfig.spec.json', stringifyContentPathRegex: '\\.(html|svg)$' } }, coverageDirectory: '../../../coverage/libs/...', transform: { '^.+\\.(ts|mjs|js|html)$': 'jest-preset-angular' }, transformIgnorePatterns: ['node_modules/(?!.*\\.mjs$)'], snapshotSerializers: [ 'jest-preset-angular/build/serializers/no-ng-attributes', 'jest-preset-angular/build/serializers/ng-snapshot', 'jest-preset-angular/build/serializers/html-comment' ] };