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feat: directly writes to stdio so jest does not swallow
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,59 +1,77 @@ | ||
| import { spyThese } from '../__helpers__/mocks' | ||
| import { debug, wrapWithDebug, __setup } from './debug' | ||
| import { debug, wrapWithDebug, __setup, warn } from './debug' | ||
|
|
||
| const consoleSpies = spyThese(console, { | ||
| log: () => void 0, | ||
| warn: () => void 0, | ||
| }) | ||
| const stdoutSpy = jest.spyOn(process.stdout, 'write') | ||
| const stderrSpy = jest.spyOn(process.stderr, 'write') | ||
|
|
||
| beforeEach(() => { | ||
| delete process.env.TS_JEST_DEBUG | ||
| consoleSpies.mockClear() | ||
| stderrSpy.mockClear() | ||
| stdoutSpy.mockClear() | ||
| }) | ||
| afterAll(() => { | ||
| stderrSpy.mockRestore() | ||
| stdoutSpy.mockRestore() | ||
| }) | ||
|
|
||
| describe('debug', () => { | ||
| it('should log when TS_JEST_DEBUG is truthy', () => { | ||
| it('should log to stdout when TS_JEST_DEBUG is truthy', () => { | ||
| process.env.TS_JEST_DEBUG = '1' | ||
| __setup() | ||
| debug('foo') | ||
| expect(consoleSpies.log).toHaveBeenCalledTimes(1) | ||
| expect(consoleSpies.log).toHaveBeenCalledWith('ts-jest:', 'foo') | ||
| expect(stdoutSpy).toHaveBeenCalledTimes(1) | ||
| expect(stdoutSpy).toHaveBeenCalledWith('ts-jest: foo\n') | ||
| }) | ||
| it('should NOT log when TS_JEST_DEBUG is falsy', () => { | ||
| it('should NOT log to stdout when TS_JEST_DEBUG is falsy', () => { | ||
| process.env.TS_JEST_DEBUG = '' | ||
| __setup() | ||
| debug('foo') | ||
| expect(consoleSpies.log).not.toHaveBeenCalled() | ||
| expect(stdoutSpy).not.toHaveBeenCalled() | ||
| }) | ||
| it('should NOT log when TS_JEST_DEBUG is not set', () => { | ||
| it('should NOT log to stdout when TS_JEST_DEBUG is not set', () => { | ||
| delete process.env.TS_JEST_DEBUG | ||
| __setup() | ||
| debug('foo') | ||
| expect(consoleSpies.log).not.toHaveBeenCalled() | ||
| expect(stdoutSpy).not.toHaveBeenCalled() | ||
| }) | ||
| }) | ||
| describe('warn', () => { | ||
| it('should log to stderr when TS_JEST_DEBUG is truthy', () => { | ||
| process.env.TS_JEST_DEBUG = '1' | ||
| __setup() | ||
| warn('foo') | ||
| expect(stderrSpy).toHaveBeenCalledTimes(1) | ||
| expect(stderrSpy).toHaveBeenCalledWith('ts-jest: foo\n') | ||
| }) | ||
| it('should log to stderr even when TS_JEST_DEBUG is falsy', () => { | ||
| delete process.env.TS_JEST_DEBUG | ||
| __setup() | ||
| warn('foo') | ||
| expect(stderrSpy).toHaveBeenCalledTimes(1) | ||
| expect(stderrSpy).toHaveBeenCalledWith('ts-jest: foo\n') | ||
| }) | ||
| }) | ||
|
|
||
| describe('wrapWithDebug', () => { | ||
| const subject = (val: string) => `hello ${val}` | ||
| const wrapAndCall = (val: string) => wrapWithDebug('foo', subject)(val) | ||
|
|
||
| it('should log when TS_JEST_DEBUG is truthy', () => { | ||
| it('should log to stdout when TS_JEST_DEBUG is truthy', () => { | ||
| process.env.TS_JEST_DEBUG = '1' | ||
| __setup() | ||
| expect(wrapAndCall('bar')).toBe('hello bar') | ||
| expect(consoleSpies.log).toHaveBeenCalledTimes(1) | ||
| expect(consoleSpies.log).toHaveBeenCalledWith('ts-jest:', 'foo') | ||
| expect(stdoutSpy).toHaveBeenCalledTimes(1) | ||
| expect(stdoutSpy).toHaveBeenCalledWith('ts-jest: foo\n') | ||
| }) | ||
| it('should NOT log when TS_JEST_DEBUG is falsy', () => { | ||
| it('should NOT log to stdout when TS_JEST_DEBUG is falsy', () => { | ||
| process.env.TS_JEST_DEBUG = '' | ||
| __setup() | ||
| expect(wrapAndCall('bar')).toBe('hello bar') | ||
| expect(consoleSpies.log).not.toHaveBeenCalled() | ||
| expect(stdoutSpy).not.toHaveBeenCalled() | ||
| }) | ||
| it('should NOT log when TS_JEST_DEBUG is not set', () => { | ||
| it('should NOT log to stdout when TS_JEST_DEBUG is not set', () => { | ||
| delete process.env.TS_JEST_DEBUG | ||
| __setup() | ||
| expect(wrapAndCall('bar')).toBe('hello bar') | ||
| expect(consoleSpies.log).not.toHaveBeenCalled() | ||
| expect(stdoutSpy).not.toHaveBeenCalled() | ||
| }) | ||
| }) |
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