/
language-service.spec.ts
255 lines (206 loc) · 8.4 KB
/
language-service.spec.ts
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import { LogLevels } from 'bs-logger'
import { readFileSync } from 'fs'
import { removeSync, writeFileSync } from 'fs-extra'
import { makeCompiler } from '../__helpers__/fakers'
import { logTargetMock } from '../__helpers__/mocks'
import { tempDir } from '../__helpers__/path'
import ProcessedSource from '../__helpers__/processed-source'
import { normalizeSlashes } from '../util/normalize-slashes'
import * as compilerUtils from './compiler-utils'
const logTarget = logTargetMock()
describe('Language service', () => {
beforeEach(() => {
logTarget.clear()
})
it('should cache resolved modules for test file with testMatchPatterns from jest config when match', () => {
const spy = jest.spyOn(compilerUtils, 'cacheResolvedModules').mockImplementationOnce(() => {})
const tmp = tempDir('compiler')
const compiler = makeCompiler({
jestConfig: { cache: true, cacheDirectory: tmp, testRegex: [/.*\.(spec|test)\.[jt]sx?$/] as any[] },
tsJestConfig: { tsConfig: false },
})
const fileName = 'src/__mocks__/unchanged-modules/main.spec.ts'
const source = `import { Thing } from './main'
export const thing: Thing = { a: 1 }`
compiler.compile(source, fileName)
expect(spy).toHaveBeenCalled()
expect(spy.mock.calls[0][0]).toEqual(normalizeSlashes(fileName))
expect(spy.mock.calls[0][1]).toEqual(source)
spy.mockRestore()
})
it("shouldn't cache resolved modules for test file with testMatchPatterns from jest config when not match", () => {
jest.spyOn(compilerUtils, 'cacheResolvedModules').mockImplementationOnce(() => {})
const tmp = tempDir('compiler')
const compiler = makeCompiler({
jestConfig: { cache: true, cacheDirectory: tmp, testRegex: [/.*\.(foo|bar)\.[jt]sx?$/] as any[] },
tsJestConfig: { tsConfig: false },
})
const fileName = 'src/__mocks__/unchanged-modules/main.spec.ts'
const source = `import { Thing } from './main'
export const thing: Thing = { a: 1 }`
compiler.compile(source, fileName)
expect(compilerUtils.cacheResolvedModules).not.toHaveBeenCalled()
})
it('should compile js file for allowJs true with outDir', () => {
const fileName = 'test-allow-js-with-outDir.js'
const compiler = makeCompiler({
tsJestConfig: { tsConfig: { allowJs: true, outDir: '$$foo$$' } },
})
const source = 'export default 42'
writeFileSync(fileName, source, 'utf8')
const compiled = compiler.compile(source, fileName)
expect(new ProcessedSource(compiled, fileName)).toMatchSnapshot()
removeSync(fileName)
})
it('should compile js file for allowJs true without outDir', () => {
const fileName = 'test-allow-js-no-outDir.js'
const compiler = makeCompiler({
tsJestConfig: { tsConfig: { allowJs: true } },
})
const source = 'export default 42'
writeFileSync(fileName, source, 'utf8')
const compiled = compiler.compile(source, fileName)
expect(new ProcessedSource(compiled, fileName)).toMatchSnapshot()
removeSync(fileName)
})
it('should compile tsx file for jsx preserve', () => {
const fileName = 'test-jsx-preserve.tsx'
const compiler = makeCompiler({
tsJestConfig: {
tsConfig: {
jsx: 'preserve' as any,
},
},
})
const source = `
const App = () => {
return <>Test</>
}
`
writeFileSync(fileName, source, 'utf8')
const compiled = compiler.compile(source, fileName)
expect(new ProcessedSource(compiled, fileName)).toMatchSnapshot()
removeSync(fileName)
})
it('should compile tsx file for other jsx options', () => {
const fileName = 'test-jsx-options.tsx'
const compiler = makeCompiler({
tsJestConfig: {
tsConfig: {
jsx: 'react' as any,
},
},
})
const source = `
const App = () => {
return <>Test</>
}
`
writeFileSync(fileName, source, 'utf8')
const compiled = compiler.compile(source, fileName)
expect(new ProcessedSource(compiled, fileName)).toMatchSnapshot()
removeSync(fileName)
})
it('should have correct source maps', () => {
const compiler = makeCompiler({ tsJestConfig: { tsConfig: false } })
const source = 'const gsm = (v: number) => v\nconst h: number = gsm(5)'
const fileName = 'test-source-map.ts'
writeFileSync(fileName, source, 'utf8')
const compiled = compiler.compile(source, fileName)
expect(new ProcessedSource(compiled, fileName).outputSourceMaps).toMatchObject({
file: fileName,
sources: [fileName],
sourcesContent: [source],
})
removeSync(fileName)
})
it('should not do type check for the test file which is already finished type checking before', () => {
const tmp = tempDir('compiler')
const testFileName = 'src/__mocks__/unchanged-modules/main.spec.ts'
const testFileSrc = readFileSync(testFileName, 'utf-8')
const importedModuleSrc = readFileSync('src/__mocks__/unchanged-modules/main.ts', 'utf-8')
const compiler = makeCompiler({
jestConfig: { cache: true, cacheDirectory: tmp, testMatch: ['src/__mocks__/unchanged-modules/*.spec.ts'] },
tsJestConfig: { tsConfig: false },
})
compiler.compile(testFileSrc, testFileName)
logTarget.clear()
compiler.compile(importedModuleSrc, require.resolve('../__mocks__/unchanged-modules/main.ts'))
expect(logTarget.filteredLines(LogLevels.debug, Infinity)).toMatchInlineSnapshot(`
Array [
"[level:20] compileAndCacheResult(): get compile output
",
"[level:20] compileFn(): compiling using language service
",
"[level:20] updateMemoryCache(): update memory cache for language service
",
"[level:20] visitSourceFileNode(): hoisting
",
"[level:20] compileFn(): computing diagnostics using language service
",
]
`)
})
it('should do type check for the test file when imported module has changed', () => {
const tmp = tempDir('compiler')
const testFileName = 'src/__mocks__/changed-modules/main.spec.ts'
const testFileSrc = readFileSync(testFileName, 'utf-8')
const importedModulePath = 'src/__mocks__/changed-modules/main.ts'
const importedModuleSrc = readFileSync(importedModulePath, 'utf-8')
const newImportedModuleSrc = 'export interface Thing { a: number, b: number }'
const compiler1 = makeCompiler({
jestConfig: { cache: true, cacheDirectory: tmp, testMatch: ['src/__mocks__/changed-modules/*.spec.ts'] },
tsJestConfig: { tsConfig: false },
})
compiler1.compile(testFileSrc, testFileName)
writeFileSync(importedModulePath, 'export interface Thing { a: number, b: number }')
const compiler2 = makeCompiler({
jestConfig: { cache: true, cacheDirectory: tmp, testMatch: ['src/__mocks__/changed-modules/*.spec.ts'] },
tsJestConfig: { tsConfig: false },
})
expect(() =>
compiler2.compile(newImportedModuleSrc, require.resolve('../__mocks__/changed-modules/main.ts')),
).toThrowErrorMatchingSnapshot()
writeFileSync(importedModulePath, importedModuleSrc)
})
it('should report diagnostics related to typings with pathRegex config matches file name', () => {
const fileName = 'test-match-regex-diagnostics.ts'
const source = `
const g = (v: number) => v
const x: string = g(5)
`
const compiler = makeCompiler({
tsJestConfig: { tsConfig: false, diagnostics: { pathRegex: fileName } },
})
writeFileSync(fileName, source, 'utf8')
expect(() => compiler.compile(source, fileName)).toThrowErrorMatchingSnapshot()
removeSync(fileName)
})
it('should not report diagnostics related to typings with pathRegex config does not match file name', () => {
const fileName = 'test-non-match-regex-diagnostics.ts'
const source = `
const f = (v: number) => v
const t: string = f(5)
`
const compiler = makeCompiler({
tsJestConfig: { tsConfig: false, diagnostics: { pathRegex: 'bar.ts' } },
})
writeFileSync(fileName, source, 'utf8')
expect(() => compiler.compile(source, fileName)).not.toThrowError()
removeSync(fileName)
})
it('should throw error when cannot compile', () => {
const fileName = 'test-cannot-compile.d.ts'
const source = `
interface Foo {
a: string
}
`
const compiler = makeCompiler({
tsJestConfig: { tsConfig: false },
})
writeFileSync(fileName, source, 'utf8')
expect(() => compiler.compile(source, fileName)).toThrowErrorMatchingSnapshot()
removeSync(fileName)
})
})