forked from jestjs/jest
/
dependency_resolver.test.ts
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/
dependency_resolver.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 {tmpdir} from 'os';
import * as path from 'path';
import Resolver = require('jest-resolve');
import type {Config} from '@jest/types';
import {buildSnapshotResolver} from 'jest-snapshot';
import {makeProjectConfig} from '../../../../TestUtils';
import DependencyResolver from '../index';
const maxWorkers = 1;
let dependencyResolver: DependencyResolver;
let runtimeContextResolver: Resolver;
let Runtime: typeof import('jest-runtime');
let config: Config.ProjectConfig;
const cases: Record<string, jest.Mock> = {
fancyCondition: jest.fn(path => path.length > 10),
testRegex: jest.fn(path => /.test.js$/.test(path)),
};
const filter = (path: Config.Path) =>
Object.keys(cases).every(key => cases[key](path));
beforeEach(() => {
Runtime = require('jest-runtime');
config = makeProjectConfig({
cacheDirectory: path.resolve(tmpdir(), 'jest-resolve-dependencies-test'),
moduleDirectories: ['node_modules'],
moduleNameMapper: [['^\\$asdf/(.*)$', '<rootDir>/$1']],
rootDir: '.',
roots: ['./packages/jest-resolve-dependencies'],
});
return Runtime.createContext(config, {maxWorkers, watchman: false}).then(
runtimeContext => {
runtimeContextResolver = runtimeContext.resolver;
dependencyResolver = new DependencyResolver(
runtimeContext.resolver,
runtimeContext.hasteFS,
buildSnapshotResolver(config),
);
},
);
});
test('resolves no dependencies for non-existent path', () => {
const resolved = dependencyResolver.resolve('/non/existent/path');
expect(resolved.length).toEqual(0);
});
test('resolves dependencies for existing path', () => {
const resolved = dependencyResolver.resolve(
path.resolve(__dirname, '__fixtures__', 'file.js'),
);
expect(resolved).toEqual([
expect.stringContaining('jest-resolve-dependencies'),
expect.stringContaining('jest-regex-util'),
]);
});
test('includes the mocks of dependencies as dependencies', () => {
const resolved = dependencyResolver.resolve(
path.resolve(__dirname, '__fixtures__/hasMocked/file.test.js'),
);
expect(resolved).toEqual([
expect.stringContaining(path.join('hasMocked', 'file.js')),
expect.stringContaining(path.join('hasMocked', '__mocks__', 'file.js')),
expect.stringContaining(path.join('__mocks__', 'fake-node-module.js')),
]);
});
test('resolves dependencies for scoped packages', () => {
const resolved = dependencyResolver.resolve(
path.resolve(__dirname, '__fixtures__', 'scoped.js'),
);
expect(resolved).toEqual([
expect.stringContaining(path.join('@myorg', 'pkg')),
]);
});
test('resolves no inverse dependencies for empty paths set', () => {
const paths = new Set();
const resolved = dependencyResolver.resolveInverse(paths, filter);
expect(resolved.length).toEqual(0);
});
test('resolves no inverse dependencies for set of non-existent paths', () => {
const paths = new Set(['/non/existent/path', '/another/one']);
const resolved = dependencyResolver.resolveInverse(paths, filter);
expect(resolved.length).toEqual(0);
});
test('resolves inverse dependencies for existing path', () => {
const paths = new Set([path.resolve(__dirname, '__fixtures__/file.js')]);
const resolved = dependencyResolver.resolveInverse(paths, filter);
expect(resolved).toEqual([
expect.stringContaining(
path.join('__tests__', '__fixtures__', 'file.test.js'),
),
]);
});
test('resolves inverse dependencies of mock', () => {
const paths = new Set([
path.resolve(__dirname, '__fixtures__/hasMocked/__mocks__/file.js'),
]);
const resolved = dependencyResolver.resolveInverse(paths, filter);
expect(resolved).toEqual([
expect.stringContaining(
path.join('__tests__/__fixtures__/hasMocked/file.test.js'),
),
]);
});
test('resolves inverse dependencies from available snapshot', () => {
const paths = new Set([
path.resolve(__dirname, '__fixtures__/file.js'),
path.resolve(__dirname, '__fixtures__/__snapshots__/related.test.js.snap'),
]);
const resolved = dependencyResolver.resolveInverse(paths, filter);
expect(resolved).toEqual(
expect.arrayContaining([
expect.stringContaining(
path.join('__tests__', '__fixtures__', 'file.test.js'),
),
expect.stringContaining(
path.join('__tests__', '__fixtures__', 'related.test.js'),
),
]),
);
});
test('resolves dependencies correctly when dependency resolution fails', () => {
jest.spyOn(runtimeContextResolver, 'resolveModule').mockImplementation(() => {
throw new Error('resolveModule has failed');
});
jest.spyOn(runtimeContextResolver, 'getMockModule').mockImplementation(() => {
throw new Error('getMockModule has failed');
});
const resolved = dependencyResolver.resolve(
path.resolve(__dirname, '__fixtures__', 'file.test.js'),
);
expect(resolved).toEqual([]);
});