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should_instrument.test.ts
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should_instrument.test.ts
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/**
* Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
import {makeGlobalConfig, makeProjectConfig} from '@jest/test-utils';
import type {Config} from '@jest/types';
import shouldInstrument from '../shouldInstrument';
import type {Options} from '../types';
describe('shouldInstrument', () => {
const defaultFilename = 'source_file.test.js';
const defaultOptions: Options = {
...makeGlobalConfig({
collectCoverage: true,
}),
changedFiles: undefined,
};
const defaultConfig = makeProjectConfig({rootDir: '/'});
describe('should return true', () => {
const testShouldInstrument = (
filename = defaultFilename,
options: Partial<Options>,
config: Partial<Config.ProjectConfig>,
) => {
const result = shouldInstrument(
filename,
{...defaultOptions, ...options},
{...defaultConfig, ...config},
);
expect(result).toBe(true);
};
it('when testRegex is provided and file is not a test file', () => {
testShouldInstrument('source_file.js', defaultOptions, {
testRegex: ['.*\\.(test)\\.(js)$'],
});
});
it('when more than one testRegex is provided and filename is not a test file', () => {
testShouldInstrument('source_file.js', defaultOptions, {
testRegex: ['.*\\_(test)\\.(js)$', '.*\\.(test)\\.(js)$', 'never'],
});
});
it('when testMatch is provided and file is not a test file', () => {
testShouldInstrument('source_file.js', defaultOptions, {
testMatch: ['**/?(*.)(test).js', '!**/dont/**/*.js'],
});
});
it('when testPathIgnorePatterns is provided and file is not a test file', () => {
testShouldInstrument('src/test.js', defaultOptions, {
testPathIgnorePatterns: ['src/'],
});
});
it('when more than one testPathIgnorePatterns is provided and filename is not a test file', () => {
testShouldInstrument('src/test.js', defaultOptions, {
testPathIgnorePatterns: ['test/', 'src/'],
});
});
it('when testRegex and testPathIgnorePatterns are provided and file is not a test file', () => {
testShouldInstrument('src/source_file.js', defaultOptions, {
testPathIgnorePatterns: ['test/'],
testRegex: ['.*\\.(test)\\.(js)$'],
});
});
it('when testMatch and testPathIgnorePatterns are provided and file is not a test file', () => {
testShouldInstrument('src/source_file.js', defaultOptions, {
testMatch: ['**/?(*.)(test).js', '!**/dont/**/*.js'],
testPathIgnorePatterns: ['test/'],
});
});
it('should return true when file is in collectCoverageOnlyFrom when provided', () => {
testShouldInstrument(
'collect/only/from/here.js',
{
collectCoverageOnlyFrom: {'collect/only/from/here.js': true},
},
defaultConfig,
);
});
it('should return true when filename matches collectCoverageFrom', () => {
testShouldInstrument(
'do/collect/coverage.js',
{
collectCoverageFrom: ['!**/dont/**/*.js', '**/do/**/*.js'],
},
defaultConfig,
);
});
it('should return true if the file is not in coveragePathIgnorePatterns', () => {
testShouldInstrument('do/collect/coverage.js', defaultOptions, {
coveragePathIgnorePatterns: ['dont'],
});
});
it('should return true if file is a testfile but forceCoverageMatch is set', () => {
testShouldInstrument('do/collect/sum.coverage.test.js', defaultOptions, {
forceCoverageMatch: ['**/*.(coverage).(test).js'],
testRegex: ['.*\\.(test)\\.(js)$'],
});
});
});
describe('should return false', () => {
const testShouldInstrument = (
filename = defaultFilename,
options: Partial<Options>,
config: Partial<Config.ProjectConfig>,
) => {
const result = shouldInstrument(
filename,
{...defaultOptions, ...options},
{...defaultConfig, ...config},
);
expect(result).toBe(false);
};
it('if collectCoverage is falsy', () => {
testShouldInstrument(
'source_file.js',
{
collectCoverage: false,
},
defaultConfig,
);
});
it('when testRegex is provided and filename is a test file', () => {
testShouldInstrument(defaultFilename, defaultOptions, {
testRegex: ['.*\\.(test)\\.(js)$'],
});
});
it('when more than one testRegex is provided and filename matches one of the patterns', () => {
testShouldInstrument(defaultFilename, defaultOptions, {
testRegex: ['.*\\_(test)\\.(js)$', '.*\\.(test)\\.(js)$', 'never'],
});
});
it('when testMatch is provided and file is a test file', () => {
testShouldInstrument(defaultFilename, defaultOptions, {
testMatch: ['**/?(*.)(test).js'],
});
});
it('when testRegex and testPathIgnorePatterns are provided and filename is a test file', () => {
testShouldInstrument('test/' + defaultFilename, defaultOptions, {
testPathIgnorePatterns: ['src/'],
testRegex: ['.*\\.(test)\\.(js)$'],
});
});
it('when testMatch and testPathIgnorePatterns are provided and file is a test file', () => {
testShouldInstrument('test/' + defaultFilename, defaultOptions, {
testMatch: ['**/?(*.)(test).js'],
testPathIgnorePatterns: ['src/'],
});
});
it('when file is not in collectCoverageOnlyFrom when provided', () => {
testShouldInstrument(
'source_file.js',
{
collectCoverageOnlyFrom: {'collect/only/from/here.js': true},
},
defaultConfig,
);
});
it('when filename does not match collectCoverageFrom', () => {
testShouldInstrument(
'dont/collect/coverage.js',
{
collectCoverageFrom: ['!**/dont/**/*.js', '**/do/**/*.js'],
},
defaultConfig,
);
});
it('if the file is in coveragePathIgnorePatterns', () => {
testShouldInstrument('dont/collect/coverage.js', defaultOptions, {
coveragePathIgnorePatterns: ['dont'],
});
});
it('if file is in mock patterns', () => {
const filename =
process.platform === 'win32'
? 'dont\\__mocks__\\collect\\coverage.js'
: 'dont/__mocks__/collect/coverage.js';
testShouldInstrument(filename, defaultOptions, defaultConfig);
});
it('if file is a globalSetup file', () => {
testShouldInstrument('globalSetup.js', defaultOptions, {
globalSetup: 'globalSetup.js',
});
});
it('if file is globalTeardown file', () => {
testShouldInstrument('globalTeardown.js', defaultOptions, {
globalTeardown: 'globalTeardown.js',
});
});
it('if file is in setupFiles', () => {
testShouldInstrument('setupTest.js', defaultOptions, {
setupFiles: ['setupTest.js'],
});
});
it('if file is in setupFilesAfterEnv', () => {
testShouldInstrument('setupTest.js', defaultOptions, {
setupFilesAfterEnv: ['setupTest.js'],
});
});
});
});