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build(devs-infra): allow extending TsJestTransformer (#2137)
Allow end users to extend `TsJestTransformer` with class inheritance
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,194 +1,12 @@ | ||
| import { LogLevels } from 'bs-logger' | ||
| import { sep } from 'path' | ||
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| import { ConfigSet } from './config/config-set' | ||
| import { SOURCE_MAPPING_PREFIX } from './compiler/instance' | ||
| import { logTargetMock } from './__helpers__/mocks' | ||
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| const logTarget = logTargetMock() | ||
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| beforeEach(() => { | ||
| logTarget.clear() | ||
| }) | ||
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| describe('TsJestTransformer', () => { | ||
| describe('configFor', () => { | ||
| test('should return the same config-set for same values with jest config string is not in configSetsIndex', () => { | ||
| const obj1 = { cwd: '/foo/.', rootDir: '/bar//dummy/..', globals: {} } | ||
| const cs3 = require('./').configsFor(obj1 as any) | ||
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| expect(cs3.cwd).toBe(`${sep}foo`) | ||
| expect(cs3.rootDir).toBe(`${sep}bar`) | ||
| }) | ||
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| test('should return the same config-set for same values with jest config string in configSetsIndex', () => { | ||
| const obj1 = { cwd: '/foo/.', rootDir: '/bar//dummy/..', globals: {} } | ||
| const obj2 = { ...obj1 } | ||
| const cs1 = require('./').configsFor(obj1 as any) | ||
| const cs2 = require('./').configsFor(obj2 as any) | ||
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| expect(cs1.cwd).toBe(`${sep}foo`) | ||
| expect(cs1.rootDir).toBe(`${sep}bar`) | ||
| expect(cs2).toBe(cs1) | ||
| }) | ||
| }) | ||
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| describe('getCacheKey', () => { | ||
| test('should be different for each argument value', () => { | ||
| const tr = require('./') | ||
| const input = { | ||
| fileContent: 'export default "foo"', | ||
| fileName: 'foo.ts', | ||
| jestConfigStr: '{"foo": "bar"}', | ||
| options: { config: { foo: 'bar' } as any, instrument: false, rootDir: '/foo' }, | ||
| } | ||
| const keys = [ | ||
| tr.getCacheKey(input.fileContent, input.fileName, input.jestConfigStr, input.options), | ||
| tr.getCacheKey(input.fileContent, 'bar.ts', input.jestConfigStr, input.options), | ||
| tr.getCacheKey(input.fileContent, input.fileName, '{}', { ...input.options, instrument: true }), | ||
| tr.getCacheKey(input.fileContent, input.fileName, '{}', { ...input.options, rootDir: '/bar' }), | ||
| ] | ||
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| // each key should have correct length | ||
| for (const key of keys) { | ||
| expect(key).toHaveLength(40) | ||
| } | ||
| // unique array should have same length | ||
| expect(keys.filter((k, i, all) => all.indexOf(k) === i)).toHaveLength(keys.length) | ||
| }) | ||
| }) | ||
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| describe('process', () => { | ||
| let tr!: any | ||
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| beforeEach(() => { | ||
| tr = require('./') | ||
| }) | ||
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| test('should process input as stringified content with content matching stringifyContentPathRegex option', () => { | ||
| const fileContent = '<h1>Hello World</h1>' | ||
| const filePath = 'foo.html' | ||
| const jestCfg = { | ||
| globals: { | ||
| 'ts-jest': { | ||
| stringifyContentPathRegex: '\\.html$', | ||
| }, | ||
| }, | ||
| } as any | ||
| tr.getCacheKey(fileContent, filePath, JSON.stringify(jestCfg), { config: jestCfg } as any) | ||
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| const result = tr.process(fileContent, filePath, jestCfg) | ||
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| expect(result).toMatchInlineSnapshot(`"module.exports=\\"<h1>Hello World</h1>\\""`) | ||
| }) | ||
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| test('should process type definition input', () => { | ||
| const fileContent = 'type Foo = number' | ||
| const filePath = 'foo.d.ts' | ||
| const jestCfg = Object.create(null) | ||
| tr.getCacheKey(fileContent, filePath, JSON.stringify(jestCfg), { config: jestCfg } as any) | ||
| const result = tr.process(fileContent, filePath, jestCfg) | ||
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| expect(result).toEqual('') | ||
| }) | ||
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| test('should process js file with allowJs false and show warning log', () => { | ||
| const fileContent = 'const foo = 1' | ||
| const filePath = 'foo.js' | ||
| const jestCfg = { | ||
| globals: { | ||
| 'ts-jest': { tsconfig: { allowJs: false } }, | ||
| }, | ||
| } as any | ||
| tr.getCacheKey(fileContent, filePath, JSON.stringify(jestCfg), { config: jestCfg } as any) | ||
| logTarget.clear() | ||
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| const result = tr.process(fileContent, filePath, jestCfg) | ||
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| expect(result).toEqual(fileContent) | ||
| expect(logTarget.lines[1].substring(0)).toMatchInlineSnapshot(` | ||
| "[level:40] Got a \`.js\` file to compile while \`allowJs\` option is not set to \`true\` (file: foo.js). To fix this: | ||
| - if you want TypeScript to process JS files, set \`allowJs\` to \`true\` in your TypeScript config (usually tsconfig.json) | ||
| - if you do not want TypeScript to process your \`.js\` files, in your Jest config change the \`transform\` key which value is \`ts-jest\` so that it does not match \`.js\` files anymore | ||
| " | ||
| `) | ||
| }) | ||
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| test.each(['foo.ts', 'foo.tsx'])('should process ts/tsx file', (filePath) => { | ||
| const fileContent = 'const foo = 1' | ||
| const output = 'var foo = 1' | ||
| const jestCfg = Object.create(null) | ||
| tr.getCacheKey(fileContent, filePath, JSON.stringify(jestCfg), { config: jestCfg } as any) | ||
| jest.spyOn(ConfigSet.prototype, 'tsCompiler', 'get').mockImplementationOnce(() => ({ | ||
| compile: () => output, | ||
| cwd: '.', | ||
| program: undefined, | ||
| })) | ||
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| const result = tr.process(fileContent, filePath, jestCfg) | ||
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| expect(result).toEqual(output) | ||
| }) | ||
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| test.each(['foo.js', 'foo.jsx'])('should process js/jsx file with allowJs true', (filePath) => { | ||
| const fileContent = 'const foo = 1' | ||
| const output = 'var foo = 1' | ||
| const jestCfg = { | ||
| globals: { | ||
| 'ts-jest': { tsconfig: { allowJs: true } }, | ||
| }, | ||
| } as any | ||
| tr.getCacheKey(fileContent, filePath, JSON.stringify(jestCfg), { config: jestCfg } as any) | ||
| logTarget.clear() | ||
| jest.spyOn(ConfigSet.prototype, 'tsCompiler', 'get').mockImplementationOnce(() => ({ | ||
| compile: () => output, | ||
| cwd: '.', | ||
| program: undefined, | ||
| })) | ||
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| const result = tr.process(fileContent, filePath, jestCfg) | ||
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| expect(result).toEqual(output) | ||
| }) | ||
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| test('should process file with unknown extension and show warning message without babel-jest', () => { | ||
| const fileContent = 'foo' | ||
| const filePath = 'foo.bar' | ||
| const jestCfg = { | ||
| globals: { | ||
| 'ts-jest': { tsconfig: { allowJs: true } }, | ||
| }, | ||
| } as any | ||
| tr.getCacheKey(fileContent, filePath, JSON.stringify(jestCfg), { config: jestCfg } as any) | ||
| logTarget.clear() | ||
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| const result = tr.process(fileContent, filePath, jestCfg) | ||
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| expect(result).toEqual(fileContent) | ||
| expect(logTarget.lines[1]).toMatchInlineSnapshot(` | ||
| "[level:40] Got a unknown file type to compile (file: foo.bar). To fix this, in your Jest config change the \`transform\` key which value is \`ts-jest\` so that it does not match this kind of files anymore. | ||
| " | ||
| `) | ||
| }) | ||
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| test.each(['foo.bar', 'foo.js'])('should process file with babel-jest', (filePath) => { | ||
| const fileContent = 'foo' | ||
| const jestCfg = { | ||
| globals: { | ||
| 'ts-jest': { babelConfig: true }, | ||
| }, | ||
| } as any | ||
| tr.getCacheKey(fileContent, filePath, JSON.stringify(jestCfg), { config: jestCfg } as any) | ||
| logTarget.clear() | ||
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| const result = tr.process('foo', filePath, jestCfg) | ||
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| if (typeof result !== 'string') { | ||
| expect(result.code.substring(0, result.code.indexOf(SOURCE_MAPPING_PREFIX))).toMatchSnapshot() | ||
| } | ||
| if (filePath === 'foo.bar') { | ||
| expect(logTarget.filteredLines(LogLevels.warn)[0]).toMatchSnapshot() | ||
| } | ||
| }) | ||
| import * as tsJest from '.' | ||
| import { TsJestTransformer } from './ts-jest-transformer' | ||
|
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| describe('createTransformer', () => { | ||
| it('should create different instances', () => { | ||
| const tr1 = tsJest.createTransformer() | ||
| const tr2 = tsJest.createTransformer() | ||
| expect(tr1).toBeInstanceOf(TsJestTransformer) | ||
| expect(tr2).toBeInstanceOf(TsJestTransformer) | ||
| expect(tr1).not.toBe(tr2) | ||
| }) | ||
| }) |
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