angular-cn/packages/compiler-cli/test/transformers/program_spec.ts

1122 lines
43 KiB
TypeScript

/**
* @license
* Copyright Google LLC 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
*/
/// <reference types="node" />
import * as ng from '@angular/compiler-cli';
import * as fs from 'fs';
import * as path from 'path';
import * as ts from 'typescript';
import {formatDiagnostics} from '../../src/perform_compile';
import {CompilerHost, EmitFlags, LazyRoute} from '../../src/transformers/api';
import {createSrcToOutPathMapper} from '../../src/transformers/program';
import {StructureIsReused, tsStructureIsReused} from '../../src/transformers/util';
import {expectNoDiagnosticsInProgram, setup, stripAnsi, TestSupport} from '../test_support';
describe('ng program', () => {
let testSupport: TestSupport;
let errorSpy: jasmine.Spy&((s: string) => void);
beforeEach(() => {
errorSpy = jasmine.createSpy('consoleError').and.callFake(console.error);
testSupport = setup();
});
function createModuleAndCompSource(prefix: string, template: string = prefix + 'template') {
const templateEntry =
template.endsWith('.html') ? `templateUrl: '${template}'` : `template: \`${template}\``;
return `
import {Component, NgModule} from '@angular/core';
@Component({selector: '${prefix}', ${templateEntry}})
export class ${prefix}Comp {}
@NgModule({declarations: [${prefix}Comp]})
export class ${prefix}Module {}
`;
}
function compileLib(libName: string) {
testSupport.writeFiles({
[`${libName}_src/index.ts`]: createModuleAndCompSource(libName),
});
const options = testSupport.createCompilerOptions();
const program = ng.createProgram({
rootNames: [path.resolve(testSupport.basePath, `${libName}_src/index.ts`)],
options,
host: ng.createCompilerHost({options}),
});
expectNoDiagnosticsInProgram(options, program);
fs.symlinkSync(
path.resolve(testSupport.basePath, 'built', `${libName}_src`),
path.resolve(testSupport.basePath, 'node_modules', libName), 'dir');
program.emit({emitFlags: ng.EmitFlags.DTS | ng.EmitFlags.JS | ng.EmitFlags.Metadata});
}
function compile(
oldProgram?: ng.Program, overrideOptions?: ng.CompilerOptions, rootNames?: string[],
host?: CompilerHost): {program: ng.Program, emitResult: ts.EmitResult} {
const options = testSupport.createCompilerOptions(overrideOptions);
if (!rootNames) {
rootNames = [path.resolve(testSupport.basePath, 'src/index.ts')];
}
if (!host) {
host = ng.createCompilerHost({options});
}
const program = ng.createProgram({
rootNames: rootNames,
options,
host,
oldProgram,
});
expectNoDiagnosticsInProgram(options, program);
const emitResult = program.emit();
return {emitResult, program};
}
function createWatchModeHost(): ng.CompilerHost {
const options = testSupport.createCompilerOptions();
const host = ng.createCompilerHost({options});
const originalGetSourceFile = host.getSourceFile;
const cache = new Map<string, ts.SourceFile>();
host.getSourceFile = function(fileName: string, languageVersion: ts.ScriptTarget):
ts.SourceFile|
undefined {
const sf = originalGetSourceFile.call(host, fileName, languageVersion);
if (sf) {
if (cache.has(sf.fileName)) {
const oldSf = cache.get(sf.fileName)!;
if (oldSf.getFullText() === sf.getFullText()) {
return oldSf;
}
}
cache.set(sf.fileName, sf);
}
return sf;
};
return host;
}
function resolveFiles(rootNames: string[]) {
const preOptions = testSupport.createCompilerOptions();
const preHost = ts.createCompilerHost(preOptions);
// don't resolve symlinks
preHost.realpath = (f) => f;
const preProgram = ts.createProgram(rootNames, preOptions, preHost);
return preProgram.getSourceFiles().map(sf => sf.fileName);
}
describe('reuse of old program', () => {
it('should reuse generated code for libraries from old programs', () => {
compileLib('lib');
testSupport.writeFiles({
'src/main.ts': createModuleAndCompSource('main'),
'src/index.ts': `
export * from './main';
export * from 'lib/index';
`
});
const p1 = compile().program;
expect(p1.getTsProgram().getSourceFiles().some(
sf => /node_modules\/lib\/.*\.ngfactory\.ts$/.test(sf.fileName)))
.toBe(true);
expect(p1.getTsProgram().getSourceFiles().some(
sf => /node_modules\/lib2\/.*\.ngfactory.*$/.test(sf.fileName)))
.toBe(false);
const p2 = compile(p1).program;
expect(p2.getTsProgram().getSourceFiles().some(
sf => /node_modules\/lib\/.*\.ngfactory.*$/.test(sf.fileName)))
.toBe(false);
expect(p2.getTsProgram().getSourceFiles().some(
sf => /node_modules\/lib2\/.*\.ngfactory.*$/.test(sf.fileName)))
.toBe(false);
// import a library for which we didn't generate code before
compileLib('lib2');
testSupport.writeFiles({
'src/index.ts': `
export * from './main';
export * from 'lib/index';
export * from 'lib2/index';
`,
});
const p3 = compile(p2).program;
expect(p3.getTsProgram().getSourceFiles().some(
sf => /node_modules\/lib\/.*\.ngfactory.*$/.test(sf.fileName)))
.toBe(false);
expect(p3.getTsProgram().getSourceFiles().some(
sf => /node_modules\/lib2\/.*\.ngfactory\.ts$/.test(sf.fileName)))
.toBe(true);
const p4 = compile(p3).program;
expect(p4.getTsProgram().getSourceFiles().some(
sf => /node_modules\/lib\/.*\.ngfactory.*$/.test(sf.fileName)))
.toBe(false);
expect(p4.getTsProgram().getSourceFiles().some(
sf => /node_modules\/lib2\/.*\.ngfactory.*$/.test(sf.fileName)))
.toBe(false);
});
// Note: this is the case for watch mode with declaration:false
it('should reuse generated code from libraries from old programs with declaration:false',
() => {
compileLib('lib');
testSupport.writeFiles({
'src/main.ts': createModuleAndCompSource('main'),
'src/index.ts': `
export * from './main';
export * from 'lib/index';
`
});
const p1 = compile(undefined, {declaration: false}).program;
expect(p1.getTsProgram().getSourceFiles().some(
sf => /node_modules\/lib\/.*\.ngfactory\.ts$/.test(sf.fileName)))
.toBe(true);
expect(p1.getTsProgram().getSourceFiles().some(
sf => /node_modules\/lib2\/.*\.ngfactory.*$/.test(sf.fileName)))
.toBe(false);
const p2 = compile(p1, {declaration: false}).program;
expect(p2.getTsProgram().getSourceFiles().some(
sf => /node_modules\/lib\/.*\.ngfactory.*$/.test(sf.fileName)))
.toBe(false);
expect(p2.getTsProgram().getSourceFiles().some(
sf => /node_modules\/lib2\/.*\.ngfactory.*$/.test(sf.fileName)))
.toBe(false);
});
it('should only emit changed files', () => {
testSupport.writeFiles({
'src/index.ts': createModuleAndCompSource('comp', 'index.html'),
'src/index.html': `Start`
});
const options: ng.CompilerOptions = {declaration: false};
const host = ng.createCompilerHost({options});
const originalGetSourceFile = host.getSourceFile;
const fileCache = new Map<string, ts.SourceFile>();
host.getSourceFile = (fileName: string, languageVersion: ts.ScriptTarget) => {
if (fileCache.has(fileName)) {
return fileCache.get(fileName);
}
const sf = originalGetSourceFile.call(host, fileName, languageVersion);
if (sf !== undefined) {
fileCache.set(fileName, sf);
}
return sf;
};
const written = new Map<string, string>();
host.writeFile = (fileName: string, data: string) => written.set(fileName, data);
// compile libraries
const p1 = compile(undefined, options, undefined, host).program;
// compile without libraries
const p2 = compile(p1, options, undefined, host).program;
expect(written.has(path.posix.join(testSupport.basePath, 'built/src/index.js'))).toBe(true);
let ngFactoryContent =
written.get(path.posix.join(testSupport.basePath, 'built/src/index.ngfactory.js'));
expect(ngFactoryContent).toMatch(/Start/);
// no change -> no emit
written.clear();
const p3 = compile(p2, options, undefined, host).program;
expect(written.size).toBe(0);
// change a user file
written.clear();
fileCache.delete(path.posix.join(testSupport.basePath, 'src/index.ts'));
const p4 = compile(p3, options, undefined, host).program;
expect(written.size).toBe(1);
expect(written.has(path.posix.join(testSupport.basePath, 'built/src/index.js'))).toBe(true);
// change a file that is input to generated files
written.clear();
testSupport.writeFiles({'src/index.html': 'Hello'});
const p5 = compile(p4, options, undefined, host).program;
expect(written.size).toBe(1);
ngFactoryContent =
written.get(path.posix.join(testSupport.basePath, 'built/src/index.ngfactory.js'));
expect(ngFactoryContent).toMatch(/Hello/);
// change a file and create an intermediate program that is not emitted
written.clear();
fileCache.delete(path.posix.join(testSupport.basePath, 'src/index.ts'));
const p6 = ng.createProgram({
rootNames: [path.posix.join(testSupport.basePath, 'src/index.ts')],
options: testSupport.createCompilerOptions(options),
host,
oldProgram: p5
});
const p7 = compile(p6, options, undefined, host).program;
expect(written.size).toBe(1);
});
it('should set emitSkipped to false for full and incremental emit', () => {
testSupport.writeFiles({
'src/index.ts': createModuleAndCompSource('main'),
});
const {emitResult: emitResult1, program: p1} = compile();
expect(emitResult1.emitSkipped).toBe(false);
const {emitResult: emitResult2, program: p2} = compile(p1);
expect(emitResult2.emitSkipped).toBe(false);
const {emitResult: emitResult3, program: p3} = compile(p2);
expect(emitResult3.emitSkipped).toBe(false);
});
it('should store library summaries on emit', () => {
compileLib('lib');
testSupport.writeFiles({
'src/main.ts': createModuleAndCompSource('main'),
'src/index.ts': `
export * from './main';
export * from 'lib/index';
`
});
const p1 = compile().program;
expect(Array.from(p1.getLibrarySummaries().values())
.some(sf => /node_modules\/lib\/index\.ngfactory\.d\.ts$/.test(sf.fileName)))
.toBe(true);
expect(Array.from(p1.getLibrarySummaries().values())
.some(sf => /node_modules\/lib\/index\.ngsummary\.json$/.test(sf.fileName)))
.toBe(true);
expect(Array.from(p1.getLibrarySummaries().values())
.some(sf => /node_modules\/lib\/index\.d\.ts$/.test(sf.fileName)))
.toBe(true);
expect(Array.from(p1.getLibrarySummaries().values())
.some(sf => /src\/main.*$/.test(sf.fileName)))
.toBe(false);
});
describe(
'verify that program structure is reused within tsc in order to speed up incremental compilation',
() => {
it('should reuse the old ts program completely if nothing changed', () => {
testSupport.writeFiles({'src/index.ts': createModuleAndCompSource('main')});
const host = createWatchModeHost();
// Note: the second compile drops factories for library files,
// and therefore changes the structure again
const p1 = compile(undefined, undefined, undefined, host).program;
const p2 = compile(p1, undefined, undefined, host).program;
compile(p2, undefined, undefined, host);
expect(tsStructureIsReused(p2.getTsProgram())).toBe(StructureIsReused.Completely);
});
it('should reuse the old ts program completely if a template or a ts file changed',
() => {
const host = createWatchModeHost();
testSupport.writeFiles({
'src/main.ts': createModuleAndCompSource('main', 'main.html'),
'src/main.html': `Some template`,
'src/util.ts': `export const x = 1`,
'src/index.ts': `
export * from './main';
export * from './util';
`
});
// Note: the second compile drops factories for library files,
// and therefore changes the structure again
const p1 = compile(undefined, undefined, undefined, host).program;
const p2 = compile(p1, undefined, undefined, host).program;
testSupport.writeFiles({
'src/main.html': `Another template`,
'src/util.ts': `export const x = 2`,
});
compile(p2, undefined, undefined, host);
expect(tsStructureIsReused(p2.getTsProgram())).toBe(StructureIsReused.Completely);
});
it('should not reuse the old ts program if an import changed', () => {
const host = createWatchModeHost();
testSupport.writeFiles({
'src/main.ts': createModuleAndCompSource('main'),
'src/util.ts': `export const x = 1`,
'src/index.ts': `
export * from './main';
export * from './util';
`
});
// Note: the second compile drops factories for library files,
// and therefore changes the structure again
const p1 = compile(undefined, undefined, undefined, host).program;
const p2 = compile(p1, undefined, undefined, host).program;
testSupport.writeFiles(
{'src/util.ts': `import {Injectable} from '@angular/core'; export const x = 1;`});
compile(p2, undefined, undefined, host);
expect(tsStructureIsReused(p2.getTsProgram())).toBe(StructureIsReused.SafeModules);
});
});
});
it('should not typecheck templates if skipTemplateCodegen is set but fullTemplateTypeCheck is not',
() => {
testSupport.writeFiles({
'src/main.ts': `
import {NgModule} from '@angular/core';
@NgModule((() => {if (1==1) return null as any;}) as any)
export class SomeClassWithInvalidMetadata {}
`,
});
const options = testSupport.createCompilerOptions({skipTemplateCodegen: true});
const host = ng.createCompilerHost({options});
const program = ng.createProgram(
{rootNames: [path.resolve(testSupport.basePath, 'src/main.ts')], options, host});
expectNoDiagnosticsInProgram(options, program);
const emitResult = program.emit({emitFlags: EmitFlags.All});
expect(emitResult.diagnostics.length).toBe(0);
testSupport.shouldExist('built/src/main.metadata.json');
});
it('should typecheck templates if skipTemplateCodegen and fullTemplateTypeCheck is set', () => {
testSupport.writeFiles({
'src/main.ts': createModuleAndCompSource('main', `{{nonExistent}}`),
});
const options = testSupport.createCompilerOptions({
skipTemplateCodegen: true,
fullTemplateTypeCheck: true,
});
const host = ng.createCompilerHost({options});
const program = ng.createProgram(
{rootNames: [path.resolve(testSupport.basePath, 'src/main.ts')], options, host});
const diags = program.getNgSemanticDiagnostics();
expect(diags.length).toBe(1);
expect(diags[0].messageText).toBe(`Property 'nonExistent' does not exist on type 'mainComp'.`);
});
it('should be able to use asynchronously loaded resources', (done) => {
testSupport.writeFiles({
'src/main.ts': createModuleAndCompSource('main', 'main.html'),
// Note: we need to be able to resolve the template synchronously,
// only the content is delivered asynchronously.
'src/main.html': '',
});
const options = testSupport.createCompilerOptions();
const host = ng.createCompilerHost({options});
host.readResource = () => Promise.resolve('Hello world!');
const program = ng.createProgram(
{rootNames: [path.resolve(testSupport.basePath, 'src/main.ts')], options, host});
program.loadNgStructureAsync().then(() => {
program.emit();
const ngFactoryPath = path.resolve(testSupport.basePath, 'built/src/main.ngfactory.js');
const factory = fs.readFileSync(ngFactoryPath, 'utf8');
expect(factory).toContain('Hello world!');
done();
});
});
it('should work with noResolve', () => {
// create a temporary ts program to get the list of all files from angular...
testSupport.writeFiles({
'src/main.ts': createModuleAndCompSource('main'),
});
const allRootNames = resolveFiles([path.resolve(testSupport.basePath, 'src/main.ts')]);
// now do the actual test with noResolve
const program = compile(undefined, {noResolve: true}, allRootNames);
testSupport.shouldExist('built/src/main.ngfactory.js');
testSupport.shouldExist('built/src/main.ngfactory.d.ts');
});
it('should work with tsx files', () => {
// create a temporary ts program to get the list of all files from angular...
testSupport.writeFiles({
'src/main.tsx': createModuleAndCompSource('main'),
});
const allRootNames = resolveFiles([path.resolve(testSupport.basePath, 'src/main.tsx')]);
const program = compile(undefined, {jsx: ts.JsxEmit.React}, allRootNames);
testSupport.shouldExist('built/src/main.js');
testSupport.shouldExist('built/src/main.d.ts');
testSupport.shouldExist('built/src/main.ngfactory.js');
testSupport.shouldExist('built/src/main.ngfactory.d.ts');
testSupport.shouldExist('built/src/main.ngsummary.json');
});
it('should emit also empty generated files depending on the options', () => {
testSupport.writeFiles({
'src/main.ts': `
import {Component, NgModule} from '@angular/core';
@Component({selector: 'main', template: '', styleUrls: ['main.css']})
export class MainComp {}
@NgModule({declarations: [MainComp]})
export class MainModule {}
`,
'src/main.css': ``,
'src/util.ts': 'export const x = 1;',
'src/index.ts': `
export * from './util';
export * from './main';
`,
});
const options = testSupport.createCompilerOptions({
allowEmptyCodegenFiles: true,
enableSummariesForJit: true,
});
const host = ng.createCompilerHost({options});
const written = new Map < string, {
original: ReadonlyArray<ts.SourceFile>|undefined;
data: string;
}
> ();
host.writeFile =
(fileName: string, data: string, writeByteOrderMark: boolean,
onError: ((message: string) => void)|undefined,
sourceFiles?: ReadonlyArray<ts.SourceFile>) => {
written.set(fileName, {original: sourceFiles, data});
};
const program = ng.createProgram(
{rootNames: [path.resolve(testSupport.basePath, 'src/index.ts')], options, host});
program.emit();
const enum ShouldBe { Empty, EmptyExport, NoneEmpty }
function assertGenFile(
fileName: string, checks: {originalFileName: string, shouldBe: ShouldBe}) {
const writeData = written.get(path.posix.join(testSupport.basePath, fileName));
expect(writeData).toBeTruthy();
expect(
writeData!.original!.some(
sf => sf.fileName === path.posix.join(testSupport.basePath, checks.originalFileName)))
.toBe(true);
switch (checks.shouldBe) {
case ShouldBe.Empty:
expect(writeData!.data).toMatch(/^(\s*\/\*([^*]|\*[^\/])*\*\/\s*)?$/);
break;
case ShouldBe.EmptyExport:
expect(writeData!.data)
.toMatch(/^((\s*\/\*([^*]|\*[^\/])*\*\/\s*)|(\s*export\s*{\s*};\s*))$/m);
break;
case ShouldBe.NoneEmpty:
expect(writeData!.data).not.toBe('');
break;
}
}
assertGenFile(
'built/src/util.ngfactory.js',
{originalFileName: 'src/util.ts', shouldBe: ShouldBe.EmptyExport});
assertGenFile(
'built/src/util.ngfactory.d.ts',
{originalFileName: 'src/util.ts', shouldBe: ShouldBe.EmptyExport});
assertGenFile(
'built/src/util.ngsummary.js',
{originalFileName: 'src/util.ts', shouldBe: ShouldBe.EmptyExport});
assertGenFile(
'built/src/util.ngsummary.d.ts',
{originalFileName: 'src/util.ts', shouldBe: ShouldBe.EmptyExport});
assertGenFile(
'built/src/util.ngsummary.json',
{originalFileName: 'src/util.ts', shouldBe: ShouldBe.NoneEmpty});
// Note: we always fill non shim and shim style files as they might
// be shared by component with and without ViewEncapsulation.
assertGenFile(
'built/src/main.css.ngstyle.js',
{originalFileName: 'src/main.ts', shouldBe: ShouldBe.NoneEmpty});
assertGenFile(
'built/src/main.css.ngstyle.d.ts',
{originalFileName: 'src/main.ts', shouldBe: ShouldBe.EmptyExport});
// Note: this file is not empty as we actually generated code for it
assertGenFile(
'built/src/main.css.shim.ngstyle.js',
{originalFileName: 'src/main.ts', shouldBe: ShouldBe.NoneEmpty});
assertGenFile(
'built/src/main.css.shim.ngstyle.d.ts',
{originalFileName: 'src/main.ts', shouldBe: ShouldBe.EmptyExport});
});
it('should not emit /// references in .d.ts files', () => {
testSupport.writeFiles({
'src/main.ts': createModuleAndCompSource('main'),
});
compile(undefined, {declaration: true}, [path.resolve(testSupport.basePath, 'src/main.ts')]);
const dts =
fs.readFileSync(path.resolve(testSupport.basePath, 'built', 'src', 'main.d.ts')).toString();
expect(dts).toMatch('export declare class');
expect(dts).not.toMatch('///');
});
it('should not emit generated files whose sources are outside of the rootDir', () => {
testSupport.writeFiles({
'src/main.ts': createModuleAndCompSource('main'),
'src/index.ts': `
export * from './main';
`
});
const options =
testSupport.createCompilerOptions({rootDir: path.resolve(testSupport.basePath, 'src')});
const host = ng.createCompilerHost({options});
const writtenFileNames: string[] = [];
const oldWriteFile = host.writeFile;
host.writeFile = (fileName, data, writeByteOrderMark, onError, sourceFiles) => {
writtenFileNames.push(fileName);
oldWriteFile(fileName, data, writeByteOrderMark, onError, sourceFiles);
};
compile(/*oldProgram*/ undefined, options, /*rootNames*/ undefined, host);
// no emit for files from node_modules as they are outside of rootDir
expect(writtenFileNames.some(f => /node_modules/.test(f))).toBe(false);
// emit all gen files for files under src/
testSupport.shouldExist('built/main.js');
testSupport.shouldExist('built/main.d.ts');
testSupport.shouldExist('built/main.ngfactory.js');
testSupport.shouldExist('built/main.ngfactory.d.ts');
testSupport.shouldExist('built/main.ngsummary.json');
});
describe('createSrcToOutPathMapper', () => {
it('should return identity mapping if no outDir is present', () => {
const mapper = createSrcToOutPathMapper(undefined, undefined, undefined, path.posix);
expect(mapper('/tmp/b/y.js')).toBe('/tmp/b/y.js');
});
it('should return identity mapping if first src and out fileName have same dir', () => {
const mapper = createSrcToOutPathMapper('/tmp', '/tmp/a/x.ts', '/tmp/a/x.js', path.posix);
expect(mapper('/tmp/b/y.js')).toBe('/tmp/b/y.js');
});
it('should adjust the filename if the outDir is inside of the rootDir', () => {
const mapper =
createSrcToOutPathMapper('/tmp/out', '/tmp/a/x.ts', '/tmp/out/a/x.js', path.posix);
expect(mapper('/tmp/b/y.js')).toBe('/tmp/out/b/y.js');
});
it('should adjust the filename if the outDir is outside of the rootDir', () => {
const mapper = createSrcToOutPathMapper('/out', '/tmp/a/x.ts', '/out/a/x.js', path.posix);
expect(mapper('/tmp/b/y.js')).toBe('/out/b/y.js');
});
it('should adjust the filename if the common prefix of sampleSrc and sampleOut is outside of outDir',
() => {
const mapper = createSrcToOutPathMapper(
'/dist/common', '/src/common/x.ts', '/dist/common/x.js', path.posix);
expect(mapper('/src/common/y.js')).toBe('/dist/common/y.js');
});
it('should work on windows with normalized paths', () => {
const mapper =
createSrcToOutPathMapper('c:/tmp/out', 'c:/tmp/a/x.ts', 'c:/tmp/out/a/x.js', path.win32);
expect(mapper('c:/tmp/b/y.js')).toBe('c:/tmp/out/b/y.js');
});
it('should work on windows with non-normalized paths', () => {
const mapper = createSrcToOutPathMapper(
'c:\\tmp\\out', 'c:\\tmp\\a\\x.ts', 'c:\\tmp\\out\\a\\x.js', path.win32);
expect(mapper('c:\\tmp\\b\\y.js')).toBe('c:/tmp/out/b/y.js');
});
});
describe('listLazyRoutes', () => {
function writeSomeRoutes() {
testSupport.writeFiles({
'src/main.ts': `
import {NgModule} from '@angular/core';
import {RouterModule} from '@angular/router';
@NgModule({
imports: [RouterModule.forRoot([{loadChildren: './child#ChildModule'}])]
})
export class MainModule {}
`,
'src/child.ts': `
import {NgModule} from '@angular/core';
import {RouterModule} from '@angular/router';
@NgModule({
imports: [RouterModule.forChild([{loadChildren: './child2#ChildModule2'}])]
})
export class ChildModule {}
`,
'src/child2.ts': `
import {NgModule} from '@angular/core';
@NgModule()
export class ChildModule2 {}
`,
});
}
function createProgram(rootNames: string[], overrideOptions: ng.CompilerOptions = {}) {
const options = testSupport.createCompilerOptions(overrideOptions);
const host = ng.createCompilerHost({options});
const program = ng.createProgram(
{rootNames: rootNames.map(p => path.resolve(testSupport.basePath, p)), options, host});
return {program, options};
}
function normalizeRoutes(lazyRoutes: LazyRoute[]) {
return lazyRoutes.map(
r => ({
route: r.route,
module: {name: r.module.name, filePath: r.module.filePath},
referencedModule:
{name: r.referencedModule.name, filePath: r.referencedModule.filePath},
}));
}
it('should list all lazyRoutes', () => {
writeSomeRoutes();
const {program, options} = createProgram(['src/main.ts', 'src/child.ts', 'src/child2.ts']);
expectNoDiagnosticsInProgram(options, program);
expect(normalizeRoutes(program.listLazyRoutes())).toEqual([
{
module:
{name: 'MainModule', filePath: path.posix.join(testSupport.basePath, 'src/main.ts')},
referencedModule: {
name: 'ChildModule',
filePath: path.posix.join(testSupport.basePath, 'src/child.ts')
},
route: './child#ChildModule'
},
{
module: {
name: 'ChildModule',
filePath: path.posix.join(testSupport.basePath, 'src/child.ts')
},
referencedModule: {
name: 'ChildModule2',
filePath: path.posix.join(testSupport.basePath, 'src/child2.ts')
},
route: './child2#ChildModule2'
},
]);
});
it('should emit correctly after listing lazyRoutes', () => {
testSupport.writeFiles({
'src/main.ts': `
import {NgModule} from '@angular/core';
import {RouterModule} from '@angular/router';
@NgModule({
imports: [RouterModule.forRoot([{loadChildren: './lazy/lazy#LazyModule'}])]
})
export class MainModule {}
`,
'src/lazy/lazy.ts': `
import {NgModule} from '@angular/core';
@NgModule()
export class ChildModule {}
`,
});
const {program, options} = createProgram(['src/main.ts', 'src/lazy/lazy.ts']);
expectNoDiagnosticsInProgram(options, program);
program.listLazyRoutes();
program.emit();
const ngFactoryPath = path.resolve(testSupport.basePath, 'built/src/lazy/lazy.ngfactory.js');
const lazyNgFactory = fs.readFileSync(ngFactoryPath, 'utf8');
expect(lazyNgFactory).toContain('import * as i1 from "./lazy";');
});
it('should list lazyRoutes given an entryRoute recursively', () => {
writeSomeRoutes();
const {program, options} = createProgram(['src/main.ts']);
expectNoDiagnosticsInProgram(options, program);
expect(normalizeRoutes(program.listLazyRoutes('src/main#MainModule'))).toEqual([
{
module:
{name: 'MainModule', filePath: path.posix.join(testSupport.basePath, 'src/main.ts')},
referencedModule: {
name: 'ChildModule',
filePath: path.posix.join(testSupport.basePath, 'src/child.ts')
},
route: './child#ChildModule'
},
{
module: {
name: 'ChildModule',
filePath: path.posix.join(testSupport.basePath, 'src/child.ts')
},
referencedModule: {
name: 'ChildModule2',
filePath: path.posix.join(testSupport.basePath, 'src/child2.ts')
},
route: './child2#ChildModule2'
},
]);
expect(normalizeRoutes(program.listLazyRoutes('src/child#ChildModule'))).toEqual([
{
module: {
name: 'ChildModule',
filePath: path.posix.join(testSupport.basePath, 'src/child.ts')
},
referencedModule: {
name: 'ChildModule2',
filePath: path.posix.join(testSupport.basePath, 'src/child2.ts')
},
route: './child2#ChildModule2'
},
]);
});
it('should list lazyRoutes pointing to a default export', () => {
testSupport.writeFiles({
'src/main.ts': `
import {NgModule} from '@angular/core';
import {RouterModule} from '@angular/router';
@NgModule({
imports: [RouterModule.forRoot([{loadChildren: './child'}])]
})
export class MainModule {}
`,
'src/child.ts': `
import {NgModule} from '@angular/core';
@NgModule()
export default class ChildModule {}
`,
});
const {program, options} = createProgram(['src/main.ts']);
expect(normalizeRoutes(program.listLazyRoutes('src/main#MainModule'))).toEqual([
{
module:
{name: 'MainModule', filePath: path.posix.join(testSupport.basePath, 'src/main.ts')},
referencedModule: {
name: undefined as any as string, // TODO: Review use of `any` here (#19904)
filePath: path.posix.join(testSupport.basePath, 'src/child.ts')
},
route: './child'
},
]);
});
it('should list lazyRoutes from imported modules', () => {
testSupport.writeFiles({
'src/main.ts': `
import {NgModule} from '@angular/core';
import {RouterModule} from '@angular/router';
import {NestedMainModule} from './nested/main';
@NgModule({
imports: [
RouterModule.forRoot([{loadChildren: './child#ChildModule'}]),
NestedMainModule,
]
})
export class MainModule {}
`,
'src/child.ts': `
import {NgModule} from '@angular/core';
@NgModule()
export class ChildModule {}
`,
'src/nested/main.ts': `
import {NgModule} from '@angular/core';
import {RouterModule} from '@angular/router';
@NgModule({
imports: [RouterModule.forChild([{loadChildren: './child#NestedChildModule'}])]
})
export class NestedMainModule {}
`,
'src/nested/child.ts': `
import {NgModule} from '@angular/core';
@NgModule()
export class NestedChildModule {}
`,
});
const {program, options} = createProgram(['src/main.ts']);
expect(normalizeRoutes(program.listLazyRoutes('src/main#MainModule'))).toEqual([
{
module: {
name: 'NestedMainModule',
filePath: path.posix.join(testSupport.basePath, 'src/nested/main.ts')
},
referencedModule: {
name: 'NestedChildModule',
filePath: path.posix.join(testSupport.basePath, 'src/nested/child.ts')
},
route: './child#NestedChildModule'
},
{
module:
{name: 'MainModule', filePath: path.posix.join(testSupport.basePath, 'src/main.ts')},
referencedModule: {
name: 'ChildModule',
filePath: path.posix.join(testSupport.basePath, 'src/child.ts')
},
route: './child#ChildModule'
},
]);
});
it('should dedupe lazyRoutes given an entryRoute', () => {
writeSomeRoutes();
testSupport.writeFiles({
'src/index.ts': `
import {NgModule} from '@angular/core';
import {RouterModule} from '@angular/router';
@NgModule({
imports: [
RouterModule.forRoot([{loadChildren: './main#MainModule'}]),
RouterModule.forRoot([{loadChildren: './child#ChildModule'}]),
]
})
export class MainModule {}
`,
});
const {program, options} = createProgram(['src/index.ts']);
expectNoDiagnosticsInProgram(options, program);
expect(normalizeRoutes(program.listLazyRoutes('src/main#MainModule'))).toEqual([
{
module:
{name: 'MainModule', filePath: path.posix.join(testSupport.basePath, 'src/main.ts')},
referencedModule: {
name: 'ChildModule',
filePath: path.posix.join(testSupport.basePath, 'src/child.ts')
},
route: './child#ChildModule'
},
{
module: {
name: 'ChildModule',
filePath: path.posix.join(testSupport.basePath, 'src/child.ts')
},
referencedModule: {
name: 'ChildModule2',
filePath: path.posix.join(testSupport.basePath, 'src/child2.ts')
},
route: './child2#ChildModule2'
},
]);
});
it('should list lazyRoutes given an entryRoute even with static errors', () => {
testSupport.writeFiles({
'src/main.ts': `
import {NgModule, Component} from '@angular/core';
import {RouterModule} from '@angular/router';
@Component({
selector: 'url-comp',
// Non existent external template
templateUrl: 'non-existent.html',
})
export class ErrorComp {}
@Component({
selector: 'err-comp',
// Error in template
template: '<input/>{{',
})
export class ErrorComp2 {}
// Component with metadata errors.
@Component(() => {if (1==1) return null as any;})
export class ErrorComp3 {}
// Unused component
@Component({
selector: 'unused-comp',
template: ''
})
export class UnusedComp {}
@NgModule({
declarations: [ErrorComp, ErrorComp2, ErrorComp3, NonExistentComp],
imports: [RouterModule.forRoot([{loadChildren: './child#ChildModule'}])]
})
export class MainModule {}
@NgModule({
// Component used in 2 NgModules
declarations: [ErrorComp],
})
export class Mod2 {}
`,
'src/child.ts': `
import {NgModule} from '@angular/core';
@NgModule()
export class ChildModule {}
`,
});
const program = createProgram(['src/main.ts'], {collectAllErrors: true}).program;
expect(normalizeRoutes(program.listLazyRoutes('src/main#MainModule'))).toEqual([{
module:
{name: 'MainModule', filePath: path.posix.join(testSupport.basePath, 'src/main.ts')},
referencedModule:
{name: 'ChildModule', filePath: path.posix.join(testSupport.basePath, 'src/child.ts')},
route: './child#ChildModule'
}]);
});
});
it('should report errors for ts and ng errors on emit with noEmitOnError=true', () => {
testSupport.writeFiles({
'src/main.ts': `
import {Component, NgModule} from '@angular/core';
// Ts error
let x: string = 1;
// Ng error
@Component({selector: 'comp', templateUrl: './main.html'})
export class MyComp {}
@NgModule({declarations: [MyComp]})
export class MyModule {}
`,
'src/main.html': '{{nonExistent}}'
});
const options = testSupport.createCompilerOptions({noEmitOnError: true});
const host = ng.createCompilerHost({options});
const program1 = ng.createProgram(
{rootNames: [path.resolve(testSupport.basePath, 'src/main.ts')], options, host});
const errorDiags =
program1.emit().diagnostics.filter(d => d.category === ts.DiagnosticCategory.Error);
expect(stripAnsi(formatDiagnostics(errorDiags)))
.toContain(
`src/main.ts:5:13 - error TS2322: Type 'number' is not assignable to type 'string'.`);
expect(stripAnsi(formatDiagnostics(errorDiags)))
.toContain(
`src/main.html:1:1 - error TS100: Property 'nonExistent' does not exist on type 'MyComp'.`);
});
it('should not report emit errors with noEmitOnError=false', () => {
testSupport.writeFiles({
'src/main.ts': `
@NgModule()
`
});
const options = testSupport.createCompilerOptions({noEmitOnError: false});
const host = ng.createCompilerHost({options});
const program1 = ng.createProgram(
{rootNames: [path.resolve(testSupport.basePath, 'src/main.ts')], options, host});
expect(program1.emit().diagnostics.length).toBe(0);
});
describe('errors', () => {
const fileWithStructuralError = `
import {NgModule} from '@angular/core';
@NgModule(() => (1===1 ? null as any : null as any))
export class MyModule {}
`;
const fileWithGoodContent = `
import {NgModule} from '@angular/core';
@NgModule()
export class MyModule {}
`;
it('should not throw on structural errors but collect them', () => {
testSupport.write('src/index.ts', fileWithStructuralError);
const options = testSupport.createCompilerOptions();
const host = ng.createCompilerHost({options});
const program = ng.createProgram(
{rootNames: [path.resolve(testSupport.basePath, 'src/index.ts')], options, host});
const structuralErrors = program.getNgStructuralDiagnostics();
expect(structuralErrors.length).toBe(1);
expect(structuralErrors[0].messageText).toContain('Function expressions are not supported');
});
it('should not throw on structural errors but collect them (loadNgStructureAsync)', (done) => {
testSupport.write('src/index.ts', fileWithStructuralError);
const options = testSupport.createCompilerOptions();
const host = ng.createCompilerHost({options});
const program = ng.createProgram(
{rootNames: [path.resolve(testSupport.basePath, 'src/index.ts')], options, host});
program.loadNgStructureAsync().then(() => {
const structuralErrors = program.getNgStructuralDiagnostics();
expect(structuralErrors.length).toBe(1);
expect(structuralErrors[0].messageText).toContain('Function expressions are not supported');
done();
});
});
it('should include non-formatted errors (e.g. invalid templateUrl)', () => {
testSupport.write('src/index.ts', `
import {Component, NgModule} from '@angular/core';
@Component({
selector: 'my-component',
templateUrl: 'template.html', // invalid template url
})
export class MyComponent {}
@NgModule({
declarations: [MyComponent]
})
export class MyModule {}
`);
const options = testSupport.createCompilerOptions();
const host = ng.createCompilerHost({options});
const program = ng.createProgram({
rootNames: [path.resolve(testSupport.basePath, 'src/index.ts')],
options,
host,
});
const structuralErrors = program.getNgStructuralDiagnostics();
expect(structuralErrors.length).toBe(1);
expect(structuralErrors[0].messageText).toContain('Couldn\'t resolve resource template.html');
});
it('should be able report structural errors with noResolve:true and generateCodeForLibraries:false ' +
'even if getSourceFile throws for non existent files',
() => {
testSupport.write('src/index.ts', fileWithGoodContent);
// compile angular and produce .ngsummary.json / ngfactory.d.ts files
compile();
testSupport.write('src/ok.ts', fileWithGoodContent);
testSupport.write('src/error.ts', fileWithStructuralError);
// Make sure the ok.ts file is before the error.ts file,
// so we added a .ngfactory.ts file for it.
const allRootNames = resolveFiles(
['src/ok.ts', 'src/error.ts'].map(fn => path.resolve(testSupport.basePath, fn)));
const options = testSupport.createCompilerOptions({
noResolve: true,
generateCodeForLibraries: false,
});
const host = ng.createCompilerHost({options});
const originalGetSourceFile = host.getSourceFile;
host.getSourceFile =
(fileName: string, languageVersion: ts.ScriptTarget,
onError?: ((message: string) => void)|undefined): ts.SourceFile|undefined => {
// We should never try to load .ngfactory.ts files
if (fileName.match(/\.ngfactory\.ts$/)) {
throw new Error(`Non existent ngfactory file: ` + fileName);
}
return originalGetSourceFile.call(host, fileName, languageVersion, onError);
};
const program = ng.createProgram({rootNames: allRootNames, options, host});
const structuralErrors = program.getNgStructuralDiagnostics();
expect(structuralErrors.length).toBe(1);
expect(structuralErrors[0].messageText)
.toContain('Function expressions are not supported');
});
});
});