angular-cn/packages/compiler-cli/ngcc/test/dependencies/dependency_resolver_spec.ts

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/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import {AbsoluteFsPath} from '../../../src/ngtsc/path';
import {DependencyResolver, SortedEntryPointsInfo} from '../../src/dependencies/dependency_resolver';
import {EsmDependencyHost} from '../../src/dependencies/esm_dependency_host';
import {ModuleResolver} from '../../src/dependencies/module_resolver';
import {FileSystem} from '../../src/file_system/file_system';
import {EntryPoint} from '../../src/packages/entry_point';
import {MockFileSystem} from '../helpers/mock_file_system';
import {MockLogger} from '../helpers/mock_logger';
const _ = AbsoluteFsPath.from;
describe('DependencyResolver', () => {
let host: EsmDependencyHost;
let resolver: DependencyResolver;
let fs: FileSystem;
let moduleResolver: ModuleResolver;
beforeEach(() => {
fs = new MockFileSystem();
moduleResolver = new ModuleResolver(fs);
host = new EsmDependencyHost(fs, moduleResolver);
resolver = new DependencyResolver(fs, new MockLogger(), {esm5: host, esm2015: host});
});
describe('sortEntryPointsByDependency()', () => {
const first = {
path: _('/first'),
packageJson: {esm5: './index.js'},
compiledByAngular: true
} as EntryPoint;
const second = {
path: _('/second'),
packageJson: {esm2015: './sub/index.js'},
compiledByAngular: true
} as EntryPoint;
const third = {
path: _('/third'),
packageJson: {fesm5: './index.js'},
compiledByAngular: true
} as EntryPoint;
const fourth = {
path: _('/fourth'),
packageJson: {fesm2015: './sub2/index.js'},
compiledByAngular: true
} as EntryPoint;
const fifth = {
path: _('/fifth'),
packageJson: {module: './index.js'},
compiledByAngular: true
} as EntryPoint;
const dependencies = {
[_('/first/index.js')]: {resolved: [second.path, third.path, '/ignored-1'], missing: []},
[_('/second/sub/index.js')]: {resolved: [third.path, fifth.path], missing: []},
[_('/third/index.js')]: {resolved: [fourth.path, '/ignored-2'], missing: []},
[_('/fourth/sub2/index.js')]: {resolved: [fifth.path], missing: []},
[_('/fifth/index.js')]: {resolved: [], missing: []},
};
it('should order the entry points by their dependency on each other', () => {
spyOn(host, 'findDependencies').and.callFake(createFakeComputeDependencies(dependencies));
const result = resolver.sortEntryPointsByDependency([fifth, first, fourth, second, third]);
expect(result.entryPoints).toEqual([fifth, fourth, third, second, first]);
});
it('should remove entry-points that have missing direct dependencies', () => {
spyOn(host, 'findDependencies').and.callFake(createFakeComputeDependencies({
[_('/first/index.js')]: {resolved: [], missing: ['/missing']},
[_('/second/sub/index.js')]: {resolved: [], missing: []},
}));
const result = resolver.sortEntryPointsByDependency([first, second]);
expect(result.entryPoints).toEqual([second]);
expect(result.invalidEntryPoints).toEqual([
{entryPoint: first, missingDependencies: ['/missing']},
]);
});
it('should remove entry points that depended upon an invalid entry-point', () => {
spyOn(host, 'findDependencies').and.callFake(createFakeComputeDependencies({
[_('/first/index.js')]: {resolved: [second.path, third.path], missing: []},
[_('/second/sub/index.js')]: {resolved: [], missing: ['/missing']},
[_('/third/index.js')]: {resolved: [], missing: []},
}));
// Note that we will process `first` before `second`, which has the missing dependency.
const result = resolver.sortEntryPointsByDependency([first, second, third]);
expect(result.entryPoints).toEqual([third]);
expect(result.invalidEntryPoints).toEqual([
{entryPoint: second, missingDependencies: ['/missing']},
{entryPoint: first, missingDependencies: ['/missing']},
]);
});
it('should remove entry points that will depend upon an invalid entry-point', () => {
spyOn(host, 'findDependencies').and.callFake(createFakeComputeDependencies({
[_('/first/index.js')]: {resolved: [second.path, third.path], missing: []},
[_('/second/sub/index.js')]: {resolved: [], missing: ['/missing']},
[_('/third/index.js')]: {resolved: [], missing: []},
}));
// Note that we will process `first` after `second`, which has the missing dependency.
const result = resolver.sortEntryPointsByDependency([second, first, third]);
expect(result.entryPoints).toEqual([third]);
expect(result.invalidEntryPoints).toEqual([
{entryPoint: second, missingDependencies: ['/missing']},
{entryPoint: first, missingDependencies: [second.path]},
]);
});
it('should error if the entry point does not have a suitable format', () => {
expect(() => resolver.sortEntryPointsByDependency([
{ path: '/first', packageJson: {}, compiledByAngular: true } as EntryPoint
])).toThrowError(`There is no appropriate source code format in '/first' entry-point.`);
});
it('should error if there is no appropriate DependencyHost for the given formats', () => {
resolver = new DependencyResolver(fs, new MockLogger(), {esm2015: host});
expect(() => resolver.sortEntryPointsByDependency([first]))
.toThrowError(
`Could not find a suitable format for computing dependencies of entry-point: '${first.path}'.`);
});
it('should capture any dependencies that were ignored', () => {
spyOn(host, 'findDependencies').and.callFake(createFakeComputeDependencies(dependencies));
const result = resolver.sortEntryPointsByDependency([fifth, first, fourth, second, third]);
expect(result.ignoredDependencies).toEqual([
{entryPoint: first, dependencyPath: '/ignored-1'},
{entryPoint: third, dependencyPath: '/ignored-2'},
]);
});
it('should only return dependencies of the target, if provided', () => {
spyOn(host, 'findDependencies').and.callFake(createFakeComputeDependencies(dependencies));
const entryPoints = [fifth, first, fourth, second, third];
let sorted: SortedEntryPointsInfo;
sorted = resolver.sortEntryPointsByDependency(entryPoints, first);
expect(sorted.entryPoints).toEqual([fifth, fourth, third, second, first]);
sorted = resolver.sortEntryPointsByDependency(entryPoints, second);
expect(sorted.entryPoints).toEqual([fifth, fourth, third, second]);
sorted = resolver.sortEntryPointsByDependency(entryPoints, third);
expect(sorted.entryPoints).toEqual([fifth, fourth, third]);
sorted = resolver.sortEntryPointsByDependency(entryPoints, fourth);
expect(sorted.entryPoints).toEqual([fifth, fourth]);
sorted = resolver.sortEntryPointsByDependency(entryPoints, fifth);
expect(sorted.entryPoints).toEqual([fifth]);
});
it('should use the appropriate DependencyHost for each entry-point', () => {
const esm5Host = new EsmDependencyHost(fs, moduleResolver);
const esm2015Host = new EsmDependencyHost(fs, moduleResolver);
resolver =
new DependencyResolver(fs, new MockLogger(), {esm5: esm5Host, esm2015: esm2015Host});
spyOn(esm5Host, 'findDependencies').and.callFake(createFakeComputeDependencies(dependencies));
spyOn(esm2015Host, 'findDependencies')
.and.callFake(createFakeComputeDependencies(dependencies));
const result = resolver.sortEntryPointsByDependency([fifth, first, fourth, second, third]);
expect(result.entryPoints).toEqual([fifth, fourth, third, second, first]);
expect(esm5Host.findDependencies).toHaveBeenCalledWith(`${first.path}/index.js`);
expect(esm5Host.findDependencies).not.toHaveBeenCalledWith(`${second.path}/sub/index.js`);
expect(esm5Host.findDependencies).toHaveBeenCalledWith(`${third.path}/index.js`);
expect(esm5Host.findDependencies).not.toHaveBeenCalledWith(`${fourth.path}/sub2/index.js`);
expect(esm5Host.findDependencies).toHaveBeenCalledWith(`${fifth.path}/index.js`);
expect(esm2015Host.findDependencies).not.toHaveBeenCalledWith(`${first.path}/index.js`);
expect(esm2015Host.findDependencies).toHaveBeenCalledWith(`${second.path}/sub/index.js`);
expect(esm2015Host.findDependencies).not.toHaveBeenCalledWith(`${third.path}/index.js`);
expect(esm2015Host.findDependencies).toHaveBeenCalledWith(`${fourth.path}/sub2/index.js`);
expect(esm2015Host.findDependencies).not.toHaveBeenCalledWith(`${fifth.path}/index.js`);
});
interface DepMap {
[path: string]: {resolved: string[], missing: string[]};
}
function createFakeComputeDependencies(deps: DepMap) {
return (entryPoint: string) => {
const dependencies = new Set();
const missing = new Set();
const deepImports = new Set();
deps[entryPoint].resolved.forEach(dep => dependencies.add(dep));
deps[entryPoint].missing.forEach(dep => missing.add(dep));
return {dependencies, missing, deepImports};
};
}
});
});