254 lines
12 KiB
TypeScript
254 lines
12 KiB
TypeScript
/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import * as ts from 'typescript';
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import {absoluteFrom, getFileSystem, relativeFrom} from '../../../src/ngtsc/file_system';
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import {runInEachFileSystem} from '../../../src/ngtsc/file_system/testing';
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import {loadTestFiles} from '../../../test/helpers';
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import {createDependencyInfo} from '../../src/dependencies/dependency_host';
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import {DtsDependencyHost} from '../../src/dependencies/dts_dependency_host';
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runInEachFileSystem(() => {
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describe('DtsDependencyHost', () => {
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let _: typeof absoluteFrom;
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let host: DtsDependencyHost;
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beforeEach(() => {
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_ = absoluteFrom;
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setupMockFileSystem();
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const fs = getFileSystem();
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host = new DtsDependencyHost(fs);
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});
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describe('getDependencies()', () => {
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it('should not generate a TS AST if the source does not contain any imports or re-exports',
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() => {
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spyOn(ts, 'createSourceFile');
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host.collectDependencies(
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_('/no/imports/or/re-exports/index.d.ts'), createDependencyInfo());
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expect(ts.createSourceFile).not.toHaveBeenCalled();
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});
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it('should resolve all the external imports of the source file', () => {
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const {dependencies, missing, deepImports} = createDependencyInfo();
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host.collectDependencies(
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_('/external/imports/index.d.ts'), {dependencies, missing, deepImports});
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expect(dependencies.size).toBe(2);
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expect(missing.size).toBe(0);
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expect(deepImports.size).toBe(0);
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expect(dependencies.has(_('/node_modules/lib-1'))).toBe(true);
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expect(dependencies.has(_('/node_modules/lib-1/sub-1'))).toBe(true);
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});
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it('should resolve all the external re-exports of the source file', () => {
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const {dependencies, missing, deepImports} = createDependencyInfo();
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host.collectDependencies(
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_('/external/re-exports/index.d.ts'), {dependencies, missing, deepImports});
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expect(dependencies.size).toBe(2);
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expect(missing.size).toBe(0);
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expect(deepImports.size).toBe(0);
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expect(dependencies.has(_('/node_modules/lib-1'))).toBe(true);
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expect(dependencies.has(_('/node_modules/lib-1/sub-1'))).toBe(true);
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});
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it('should capture missing external imports', () => {
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const {dependencies, missing, deepImports} = createDependencyInfo();
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host.collectDependencies(
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_('/external/imports-missing/index.d.ts'), {dependencies, missing, deepImports});
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expect(dependencies.size).toBe(1);
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expect(dependencies.has(_('/node_modules/lib-1'))).toBe(true);
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expect(missing.size).toBe(1);
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expect(missing.has(relativeFrom('missing'))).toBe(true);
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expect(deepImports.size).toBe(0);
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});
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it('should not register deep imports as missing', () => {
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// This scenario verifies the behavior of the dependency analysis when an external import
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// is found that does not map to an entry-point but still exists on disk, i.e. a deep
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// import. Such deep imports are captured for diagnostics purposes.
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// Note that in the DTS version, the deep import may not map to a .d.ts file, but instead
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// a .js file. This test exercises this particular scenario.
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const {dependencies, missing, deepImports} = createDependencyInfo();
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host.collectDependencies(
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_('/external/deep-import/index.d.ts'), {dependencies, missing, deepImports});
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expect(dependencies.size).toBe(0);
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expect(missing.size).toBe(0);
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expect(deepImports.size).toBe(1);
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expect(deepImports.has(_('/node_modules/lib-1/deep/import'))).toBe(true);
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});
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it('should not register deep imports as missing, if available in `@types/...`', () => {
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// This scenario verifies the behavior of the dependency analysis when an external import
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// is found that does not map to an entry-point but still exists in an `@types/...` package,
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// i.e. a type-only deep import. Such deep imports are captured for diagnostics purposes.
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const {dependencies, missing, deepImports} = createDependencyInfo();
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host.collectDependencies(
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_('/external/deep-import-2/index.d.ts'), {dependencies, missing, deepImports});
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expect(dependencies.size).toBe(0);
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expect(missing.size).toBe(0);
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expect(deepImports.size).toBe(1);
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expect(deepImports.has(_('/node_modules/@types/type-only/deep/import'))).toBe(true);
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});
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it('should recurse into internal dependencies', () => {
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const {dependencies, missing, deepImports} = createDependencyInfo();
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host.collectDependencies(
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_('/internal/outer/index.d.ts'), {dependencies, missing, deepImports});
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expect(dependencies.size).toBe(1);
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expect(dependencies.has(_('/node_modules/lib-1/sub-1'))).toBe(true);
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expect(missing.size).toBe(0);
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expect(deepImports.size).toBe(0);
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});
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it('should handle circular internal dependencies', () => {
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const {dependencies, missing, deepImports} = createDependencyInfo();
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host.collectDependencies(
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_('/internal/circular-a/index.d.ts'), {dependencies, missing, deepImports});
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expect(dependencies.size).toBe(2);
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expect(dependencies.has(_('/node_modules/lib-1'))).toBe(true);
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expect(dependencies.has(_('/node_modules/lib-1/sub-1'))).toBe(true);
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expect(missing.size).toBe(0);
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expect(deepImports.size).toBe(0);
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});
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it('should support `paths` alias mappings when resolving modules', () => {
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const fs = getFileSystem();
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host = new DtsDependencyHost(fs, {
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baseUrl: '/dist',
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paths: {
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'@app/*': ['*'],
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'@lib/*/test': ['lib/*/test'],
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}
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});
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const {dependencies, missing, deepImports} = createDependencyInfo();
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host.collectDependencies(_('/path-alias/index.d.ts'), {dependencies, missing, deepImports});
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expect(dependencies.size).toBe(4);
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expect(dependencies.has(_('/dist/components'))).toBe(true);
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expect(dependencies.has(_('/dist/shared'))).toBe(true);
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expect(dependencies.has(_('/dist/lib/shared/test'))).toBe(true);
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expect(dependencies.has(_('/node_modules/lib-1'))).toBe(true);
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expect(missing.size).toBe(0);
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expect(deepImports.size).toBe(0);
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});
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it('should handle entry-point paths with no extension', () => {
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const {dependencies, missing, deepImports} = createDependencyInfo();
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host.collectDependencies(
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_('/external/imports/index'), {dependencies, missing, deepImports});
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expect(dependencies.size).toBe(2);
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expect(missing.size).toBe(0);
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expect(deepImports.size).toBe(0);
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expect(dependencies.has(_('/node_modules/lib-1'))).toBe(true);
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expect(dependencies.has(_('/node_modules/lib-1/sub-1'))).toBe(true);
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});
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});
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function setupMockFileSystem(): void {
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loadTestFiles([
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{
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name: _('/no/imports/or/re-exports/index.d.ts'),
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contents: '// some text but no import-like statements'
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},
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{name: _('/no/imports/or/re-exports/package.json'), contents: '{"esm2015": "./index.js"}'},
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{name: _('/no/imports/or/re-exports/index.metadata.json'), contents: 'MOCK METADATA'},
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{
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name: _('/external/imports/index.d.ts'),
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contents: `import {X} from 'lib-1';\nimport {Y} from 'lib-1/sub-1';`
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},
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{name: _('/external/imports/package.json'), contents: '{"esm2015": "./index.js"}'},
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{name: _('/external/imports/index.metadata.json'), contents: 'MOCK METADATA'},
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{
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name: _('/external/re-exports/index.d.ts'),
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contents: `export {X} from 'lib-1';\nexport {Y} from 'lib-1/sub-1';`
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},
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{name: _('/external/re-exports/package.json'), contents: '{"esm2015": "./index.js"}'},
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{name: _('/external/re-exports/index.metadata.json'), contents: 'MOCK METADATA'},
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{
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name: _('/external/imports-missing/index.d.ts'),
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contents: `import {X} from 'lib-1';\nimport {Y} from 'missing';`
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},
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{name: _('/external/imports-missing/package.json'), contents: '{"esm2015": "./index.js"}'},
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{name: _('/external/imports-missing/index.metadata.json'), contents: 'MOCK METADATA'},
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{
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name: _('/external/deep-import/index.d.ts'),
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contents: `import {Y} from 'lib-1/deep/import';`
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},
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{name: _('/external/deep-import/package.json'), contents: '{"esm2015": "./index.js"}'},
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{name: _('/external/deep-import/index.metadata.json'), contents: 'MOCK METADATA'},
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{
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name: _('/external/deep-import-2/index.d.ts'),
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contents: `import {Y} from 'type-only/deep/import';`
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},
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{
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name: _('/node_modules/@types/type-only/deep/import/index.d.ts'),
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contents: `export declare class Y {}`
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},
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{name: _('/internal/outer/index.d.ts'), contents: `import {X} from '../inner';`},
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{name: _('/internal/outer/package.json'), contents: '{"esm2015": "./index.js"}'},
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{name: _('/internal/outer/index.metadata.json'), contents: 'MOCK METADATA'},
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{
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name: _('/internal/inner/index.d.ts'),
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contents: `import {Y} from 'lib-1/sub-1'; export declare class X {}`
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},
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{
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name: _('/internal/circular-a/index.d.ts'),
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contents:
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`import {B} from '../circular-b'; import {X} from '../circular-b'; export {Y} from 'lib-1/sub-1';`
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},
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{
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name: _('/internal/circular-b/index.d.ts'),
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contents:
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`import {A} from '../circular-a'; import {Y} from '../circular-a'; export {X} from 'lib-1';`
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},
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{name: _('/internal/circular-a/package.json'), contents: '{"esm2015": "./index.js"}'},
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{name: _('/internal/circular-a/index.metadata.json'), contents: 'MOCK METADATA'},
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{
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name: _('/path-alias/index.d.ts'),
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contents:
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`import {TestHelper} from '@app/components';\nimport {Service} from '@app/shared';\nimport {TestHelper} from '@lib/shared/test';\nimport {X} from 'lib-1';`
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},
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{name: _('/path-alias/package.json'), contents: '{"esm2015": "./index.js"}'},
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{name: _('/path-alias/index.metadata.json'), contents: 'MOCK METADATA'},
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{name: _('/node_modules/lib-1/index.d.ts'), contents: 'export declare class X {}'},
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{name: _('/node_modules/lib-1/package.json'), contents: '{"esm2015": "./index.js"}'},
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{name: _('/node_modules/lib-1/index.metadata.json'), contents: 'MOCK METADATA'},
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{
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name: _('/node_modules/lib-1/deep/import/index.js'),
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contents: 'export class DeepImport {}'
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},
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{name: _('/node_modules/lib-1/sub-1/index.d.ts'), contents: 'export declare class Y {}'},
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{name: _('/node_modules/lib-1/sub-1/package.json'), contents: '{"esm2015": "./index.js"}'},
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{name: _('/node_modules/lib-1/sub-1/index.metadata.json'), contents: 'MOCK METADATA'},
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{name: _('/node_modules/lib-1/sub-2.d.ts'), contents: `export * from './sub-2/sub-2';`},
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{name: _('/node_modules/lib-1/sub-2/sub-2.d.ts'), contents: `export declare class Z {}';`},
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{name: _('/node_modules/lib-1/sub-2/package.json'), contents: '{"esm2015": "./sub-2.js"}'},
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{name: _('/node_modules/lib-1/sub-2/sub-2.metadata.json'), contents: 'MOCK METADATA'},
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{name: _('/dist/components/index.d.ts'), contents: `class MyComponent {};`},
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{name: _('/dist/components/package.json'), contents: '{"esm2015": "./index.js"}'},
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{name: _('/dist/components/index.metadata.json'), contents: 'MOCK METADATA'},
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{
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name: _('/dist/shared/index.d.ts'),
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contents: `import {X} from 'lib-1';\nexport declare class Service {}`
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},
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{name: _('/dist/shared/package.json'), contents: '{"esm2015": "./index.js"}'},
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{name: _('/dist/shared/index.metadata.json'), contents: 'MOCK METADATA'},
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{
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name: _('/dist/lib/shared/test/index.d.ts'),
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contents: `export declare class TestHelper {}`
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},
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{name: _('/dist/lib/shared/test/package.json'), contents: '{"esm2015": "./index.js"}'},
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{name: _('/dist/lib/shared/test/index.metadata.json'), contents: 'MOCK METADATA'},
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]);
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}
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});
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});
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