745b59f49c
For now, we always create all generated files, but diff them before we pass them to TypeScript. For the user files, we compare the programs and only emit changed TypeScript files. This also adds more diagnostic messages if the `—diagnostics` flag is passed to the command line.
311 lines
12 KiB
TypeScript
311 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 compiler from '@angular/compiler';
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import * as ts from 'typescript';
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import {MetadataCollector} from '../../src/metadata/collector';
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import {CompilerHost, CompilerOptions, LibrarySummary} from '../../src/transformers/api';
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import {TsCompilerAotCompilerTypeCheckHostAdapter, createCompilerHost} from '../../src/transformers/compiler_host';
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import {Directory, Entry, MockAotContext, MockCompilerHost} from '../mocks';
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const dummyModule = 'export let foo: any[];';
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const aGeneratedFile = new compiler.GeneratedFile(
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'/tmp/src/index.ts', '/tmp/src/index.ngfactory.ts',
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[new compiler.DeclareVarStmt('x', new compiler.LiteralExpr(1))]);
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const aGeneratedFileText = `var x:any = 1;\n`;
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describe('NgCompilerHost', () => {
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let codeGenerator: {generateFile: jasmine.Spy; findGeneratedFileNames: jasmine.Spy;};
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beforeEach(() => {
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codeGenerator = {
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generateFile: jasmine.createSpy('generateFile').and.returnValue(null),
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findGeneratedFileNames: jasmine.createSpy('findGeneratedFileNames').and.returnValue([]),
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};
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});
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function createNgHost({files = {}}: {files?: Directory} = {}): CompilerHost {
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const context = new MockAotContext('/tmp/', files);
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return new MockCompilerHost(context) as ts.CompilerHost;
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}
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function createHost({
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files = {},
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options = {
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basePath: '/tmp',
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moduleResolution: ts.ModuleResolutionKind.NodeJs,
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},
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ngHost = createNgHost({files}),
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librarySummaries = [],
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}: {
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files?: Directory,
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options?: CompilerOptions,
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ngHost?: CompilerHost,
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librarySummaries?: LibrarySummary[]
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} = {}) {
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return new TsCompilerAotCompilerTypeCheckHostAdapter(
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['/tmp/index.ts'], options, ngHost, new MetadataCollector(), codeGenerator,
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new Map(librarySummaries.map(entry => [entry.fileName, entry] as[string, LibrarySummary])));
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}
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describe('fileNameToModuleName', () => {
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let host: TsCompilerAotCompilerTypeCheckHostAdapter;
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beforeEach(() => { host = createHost(); });
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it('should use a package import when accessing a package from a source file', () => {
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expect(host.fileNameToModuleName('/tmp/node_modules/@angular/core.d.ts', '/tmp/main.ts'))
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.toBe('@angular/core');
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});
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it('should use a package import when accessing a package from another package', () => {
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expect(host.fileNameToModuleName(
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'/tmp/node_modules/mod1/index.d.ts', '/tmp/node_modules/mod2/index.d.ts'))
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.toBe('mod1/index');
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expect(host.fileNameToModuleName(
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'/tmp/node_modules/@angular/core/index.d.ts',
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'/tmp/node_modules/@angular/common/index.d.ts'))
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.toBe('@angular/core/index');
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});
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it('should use a relative import when accessing a file in the same package', () => {
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expect(host.fileNameToModuleName(
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'/tmp/node_modules/mod/a/child.d.ts', '/tmp/node_modules/mod/index.d.ts'))
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.toBe('./a/child');
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expect(host.fileNameToModuleName(
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'/tmp/node_modules/@angular/core/src/core.d.ts',
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'/tmp/node_modules/@angular/core/index.d.ts'))
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.toBe('./src/core');
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});
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it('should use a relative import when accessing a source file from a source file', () => {
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expect(host.fileNameToModuleName('/tmp/src/a/child.ts', '/tmp/src/index.ts'))
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.toBe('./a/child');
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});
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it('should support multiple rootDirs when accessing a source file form a source file', () => {
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const hostWithMultipleRoots = createHost({
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options: {
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basePath: '/tmp/',
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rootDirs: [
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'src/a',
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'src/b',
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]
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}
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});
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// both files are in the rootDirs
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expect(hostWithMultipleRoots.fileNameToModuleName('/tmp/src/b/b.ts', '/tmp/src/a/a.ts'))
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.toBe('./b');
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// one file is not in the rootDirs
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expect(hostWithMultipleRoots.fileNameToModuleName('/tmp/src/c/c.ts', '/tmp/src/a/a.ts'))
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.toBe('../c/c');
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});
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it('should error if accessing a source file from a package', () => {
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expect(
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() => host.fileNameToModuleName(
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'/tmp/src/a/child.ts', '/tmp/node_modules/@angular/core.d.ts'))
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.toThrowError(
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'Trying to import a source file from a node_modules package: ' +
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'import /tmp/src/a/child.ts from /tmp/node_modules/@angular/core.d.ts');
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});
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it('should use the provided implementation if any', () => {
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const ngHost = createNgHost();
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ngHost.fileNameToModuleName = () => 'someResult';
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const host = createHost({ngHost});
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expect(host.fileNameToModuleName('a', 'b')).toBe('someResult');
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});
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});
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describe('moduleNameToFileName', () => {
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it('should resolve an import using the containing file', () => {
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const host = createHost({files: {'tmp': {'src': {'a': {'child.d.ts': dummyModule}}}}});
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expect(host.moduleNameToFileName('./a/child', '/tmp/src/index.ts'))
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.toBe('/tmp/src/a/child.d.ts');
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});
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it('should allow to skip the containg file for package imports', () => {
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const host =
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createHost({files: {'tmp': {'node_modules': {'@core': {'index.d.ts': dummyModule}}}}});
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expect(host.moduleNameToFileName('@core/index')).toBe('/tmp/node_modules/@core/index.d.ts');
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});
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it('should use the provided implementation if any', () => {
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const ngHost = createNgHost();
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ngHost.moduleNameToFileName = () => 'someResult';
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const host = createHost({ngHost});
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expect(host.moduleNameToFileName('a', 'b')).toBe('someResult');
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});
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});
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describe('resourceNameToFileName', () => {
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it('should resolve a relative import', () => {
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const host = createHost({files: {'tmp': {'src': {'a': {'child.html': '<div>'}}}}});
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expect(host.resourceNameToFileName('./a/child.html', '/tmp/src/index.ts'))
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.toBe('/tmp/src/a/child.html');
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expect(host.resourceNameToFileName('./a/non-existing.html', '/tmp/src/index.ts')).toBe(null);
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});
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it('should resolve package paths as relative paths', () => {
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const host = createHost({files: {'tmp': {'src': {'a': {'child.html': '<div>'}}}}});
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expect(host.resourceNameToFileName('a/child.html', '/tmp/src/index.ts'))
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.toBe('/tmp/src/a/child.html');
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});
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it('should resolve absolute paths as package paths', () => {
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const host = createHost({files: {'tmp': {'node_modules': {'a': {'child.html': '<div>'}}}}});
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expect(host.resourceNameToFileName('/a/child.html', ''))
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.toBe('/tmp/node_modules/a/child.html');
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});
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it('should use the provided implementation if any', () => {
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const ngHost = createNgHost();
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ngHost.resourceNameToFileName = () => 'someResult';
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const host = createHost({ngHost});
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expect(host.resourceNameToFileName('a', 'b')).toBe('someResult');
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});
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});
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describe('getSourceFile', () => {
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it('should cache source files by name', () => {
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const host = createHost({files: {'tmp': {'src': {'index.ts': ``}}}});
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const sf1 = host.getSourceFile('/tmp/src/index.ts', ts.ScriptTarget.Latest);
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const sf2 = host.getSourceFile('/tmp/src/index.ts', ts.ScriptTarget.Latest);
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expect(sf1).toBe(sf2);
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});
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it('should generate code when asking for the base name and add it as referencedFiles', () => {
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codeGenerator.findGeneratedFileNames.and.returnValue(['/tmp/src/index.ngfactory.ts']);
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codeGenerator.generateFile.and.returnValue(aGeneratedFile);
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const host = createHost({
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files: {
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'tmp': {
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'src': {
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'index.ts': `
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/// <reference path="main.ts"/>
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`
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}
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}
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}
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});
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const sf = host.getSourceFile('/tmp/src/index.ts', ts.ScriptTarget.Latest);
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expect(sf.referencedFiles[0].fileName).toBe('main.ts');
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expect(sf.referencedFiles[1].fileName).toBe('/tmp/src/index.ngfactory.ts');
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const genSf = host.getSourceFile('/tmp/src/index.ngfactory.ts', ts.ScriptTarget.Latest);
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expect(genSf.text).toBe(aGeneratedFileText);
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// the codegen should have been cached
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expect(codeGenerator.generateFile).toHaveBeenCalledTimes(1);
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expect(codeGenerator.findGeneratedFileNames).toHaveBeenCalledTimes(1);
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});
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it('should generate code when asking for the generated name first', () => {
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codeGenerator.findGeneratedFileNames.and.returnValue(['/tmp/src/index.ngfactory.ts']);
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codeGenerator.generateFile.and.returnValue(aGeneratedFile);
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const host = createHost({
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files: {
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'tmp': {
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'src': {
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'index.ts': `
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/// <reference path="main.ts"/>
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`
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}
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}
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}
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});
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const genSf = host.getSourceFile('/tmp/src/index.ngfactory.ts', ts.ScriptTarget.Latest);
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expect(genSf.text).toBe(aGeneratedFileText);
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const sf = host.getSourceFile('/tmp/src/index.ts', ts.ScriptTarget.Latest);
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expect(sf.referencedFiles[0].fileName).toBe('main.ts');
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expect(sf.referencedFiles[1].fileName).toBe('/tmp/src/index.ngfactory.ts');
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// the codegen should have been cached
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expect(codeGenerator.generateFile).toHaveBeenCalledTimes(1);
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expect(codeGenerator.findGeneratedFileNames).toHaveBeenCalledTimes(1);
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});
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it('should clear old generated references if the original host cached them', () => {
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codeGenerator.findGeneratedFileNames.and.returnValue(['/tmp/src/index.ngfactory.ts']);
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const ngHost = createNgHost();
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const sfText = `
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/// <reference path="main.ts"/>
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`;
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const sf = ts.createSourceFile('/tmp/src/index.ts', sfText, ts.ScriptTarget.Latest);
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ngHost.getSourceFile = () => sf;
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codeGenerator.findGeneratedFileNames.and.returnValue(['/tmp/src/index.ngfactory.ts']);
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codeGenerator.generateFile.and.returnValue(
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new compiler.GeneratedFile('/tmp/src/index.ts', '/tmp/src/index.ngfactory.ts', []));
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const host1 = createHost({ngHost});
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host1.getSourceFile('/tmp/src/index.ts', ts.ScriptTarget.Latest);
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expect(sf.referencedFiles.length).toBe(2);
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expect(sf.referencedFiles[0].fileName).toBe('main.ts');
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expect(sf.referencedFiles[1].fileName).toBe('/tmp/src/index.ngfactory.ts');
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codeGenerator.findGeneratedFileNames.and.returnValue([]);
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codeGenerator.generateFile.and.returnValue(null);
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const host2 = createHost({ngHost});
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host2.getSourceFile('/tmp/src/index.ts', ts.ScriptTarget.Latest);
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expect(sf.referencedFiles.length).toBe(1);
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expect(sf.referencedFiles[0].fileName).toBe('main.ts');
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});
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});
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describe('updateSourceFile', () => {
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it('should update source files', () => {
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codeGenerator.findGeneratedFileNames.and.returnValue(['/tmp/src/index.ngfactory.ts']);
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codeGenerator.generateFile.and.returnValue(aGeneratedFile);
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const host = createHost({files: {'tmp': {'src': {'index.ts': ''}}}});
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let genSf = host.getSourceFile('/tmp/src/index.ngfactory.ts', ts.ScriptTarget.Latest);
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expect(genSf.text).toBe(aGeneratedFileText);
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host.updateGeneratedFile(new compiler.GeneratedFile(
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'/tmp/src/index.ts', '/tmp/src/index.ngfactory.ts',
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[new compiler.DeclareVarStmt('x', new compiler.LiteralExpr(2))]));
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genSf = host.getSourceFile('/tmp/src/index.ngfactory.ts', ts.ScriptTarget.Latest);
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expect(genSf.text).toBe(`var x:any = 2;\n`);
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});
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it('should error if the imports changed', () => {
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codeGenerator.findGeneratedFileNames.and.returnValue(['/tmp/src/index.ngfactory.ts']);
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codeGenerator.generateFile.and.returnValue(new compiler.GeneratedFile(
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'/tmp/src/index.ts', '/tmp/src/index.ngfactory.ts',
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[new compiler.DeclareVarStmt(
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'x',
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new compiler.ExternalExpr(new compiler.ExternalReference('aModule', 'aName')))]));
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const host = createHost({files: {'tmp': {'src': {'index.ts': ''}}}});
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host.getSourceFile('/tmp/src/index.ngfactory.ts', ts.ScriptTarget.Latest);
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expect(
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() => host.updateGeneratedFile(new compiler.GeneratedFile(
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'/tmp/src/index.ts', '/tmp/src/index.ngfactory.ts',
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[new compiler.DeclareVarStmt(
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'x', new compiler.ExternalExpr(
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new compiler.ExternalReference('otherModule', 'aName')))])))
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.toThrowError([
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`Illegal State: external references changed in /tmp/src/index.ngfactory.ts.`,
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`Old: aModule.`, `New: otherModule`
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].join('\n'));
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});
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});
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});
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