angular-cn/packages/compiler-cli/test/metadata/bundler_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 * as path from 'path';
import * as ts from 'typescript';
import {MetadataBundler, MetadataBundlerHost} from '../../src/metadata/bundler';
import {MetadataCollector} from '../../src/metadata/collector';
import {ClassMetadata, MetadataGlobalReferenceExpression, ModuleMetadata} from '../../src/metadata/schema';
import {Directory, open} from './typescript.mocks';
describe('metadata bundler', () => {
it('should be able to bundle a simple library', () => {
const host = new MockStringBundlerHost('/', SIMPLE_LIBRARY);
const bundler = new MetadataBundler('/lib/index', undefined, host, 'prfx_');
const result = bundler.getMetadataBundle();
expect(Object.keys(result.metadata.metadata).sort()).toEqual([
'ONE_CLASSES', 'One', 'OneMore', 'TWO_CLASSES', 'Two', 'TwoMore', 'ɵprfx_a', 'ɵprfx_b'
]);
const originalOne = './src/one';
const originalTwo = './src/two/index';
expect(Object.keys(result.metadata.origins !)
.sort()
.map(name => ({name, value: result.metadata.origins ![name]})))
.toEqual([
{name: 'ONE_CLASSES', value: originalOne}, {name: 'One', value: originalOne},
{name: 'OneMore', value: originalOne}, {name: 'TWO_CLASSES', value: originalTwo},
{name: 'Two', value: originalTwo}, {name: 'TwoMore', value: originalTwo},
{name: 'ɵprfx_a', value: originalOne}, {name: 'ɵprfx_b', value: originalTwo}
]);
expect(result.privates).toEqual([
{privateName: 'ɵprfx_a', name: 'PrivateOne', module: originalOne},
{privateName: 'ɵprfx_b', name: 'PrivateTwo', module: originalTwo}
]);
});
it('should be able to bundle an oddly constructed library', () => {
const host = new MockStringBundlerHost('/', {
'lib': {
'index.ts': `
export * from './src/index';
`,
'src': {
'index.ts': `
export {One, OneMore, ONE_CLASSES} from './one';
export {Two, TwoMore, TWO_CLASSES} from './two/index';
`,
'one.ts': `
class One {}
class OneMore extends One {}
class PrivateOne {}
const ONE_CLASSES = [One, OneMore, PrivateOne];
export {One, OneMore, PrivateOne, ONE_CLASSES};
`,
'two': {
'index.ts': `
class Two {}
class TwoMore extends Two {}
class PrivateTwo {}
const TWO_CLASSES = [Two, TwoMore, PrivateTwo];
export {Two, TwoMore, PrivateTwo, TWO_CLASSES};
`
}
}
}
});
const bundler = new MetadataBundler('/lib/index', undefined, host);
const result = bundler.getMetadataBundle();
expect(Object.keys(result.metadata.metadata).sort()).toEqual([
'ONE_CLASSES', 'One', 'OneMore', 'TWO_CLASSES', 'Two', 'TwoMore', 'ɵa', 'ɵb'
]);
expect(result.privates).toEqual([
{privateName: 'ɵa', name: 'PrivateOne', module: './src/one'},
{privateName: 'ɵb', name: 'PrivateTwo', module: './src/two/index'}
]);
});
it('should not output windows paths in metadata', () => {
const host = new MockStringBundlerHost('/', {
'index.ts': `
export * from './exports/test';
`,
'exports': {'test.ts': `export class TestExport {}`}
});
const bundler = new MetadataBundler('/index', undefined, host);
const result = bundler.getMetadataBundle();
expect(result.metadata.origins).toEqual({'TestExport': './exports/test'});
});
it('should convert re-exported to the export', () => {
const host = new MockStringBundlerHost('/', {
'index.ts': `
export * from './bar';
export * from './foo';
`,
'bar.ts': `
import {Foo} from './foo';
export class Bar extends Foo {
}
`,
'foo.ts': `
export {Foo} from 'foo';
`
});
const bundler = new MetadataBundler('/index', undefined, host);
const result = bundler.getMetadataBundle();
// Expect the extends reference to refer to the imported module
expect((result.metadata.metadata as any).Bar.extends.module).toEqual('foo');
expect(result.privates).toEqual([]);
});
it('should treat import then export as a simple export', () => {
const host = new MockStringBundlerHost('/', {
'index.ts': `
export * from './a';
export * from './c';
`,
'a.ts': `
import { B } from './b';
export { B };
`,
'b.ts': `
export class B { }
`,
'c.ts': `
import { B } from './b';
export class C extends B { }
`
});
const bundler = new MetadataBundler('/index', undefined, host);
const result = bundler.getMetadataBundle();
expect(Object.keys(result.metadata.metadata).sort()).toEqual(['B', 'C']);
expect(result.privates).toEqual([]);
});
it('should be able to bundle a private from a un-exported module', () => {
const host = new MockStringBundlerHost('/', {
'index.ts': `
export * from './foo';
`,
'foo.ts': `
import {Bar} from './bar';
export class Foo extends Bar {
}
`,
'bar.ts': `
export class Bar {}
`
});
const bundler = new MetadataBundler('/index', undefined, host);
const result = bundler.getMetadataBundle();
expect(Object.keys(result.metadata.metadata).sort()).toEqual(['Foo', 'ɵa']);
expect(result.privates).toEqual([{privateName: 'ɵa', name: 'Bar', module: './bar'}]);
});
it('should be able to bundle a library with re-exported symbols', () => {
const host = new MockStringBundlerHost('/', {
'public-api.ts': `
export * from './src/core';
export * from './src/externals';
`,
'src': {
'core.ts': `
export class A {}
export class B extends A {}
`,
'externals.ts': `
export {E, F, G} from 'external_one';
export * from 'external_two';
`
}
});
const bundler = new MetadataBundler('/public-api', undefined, host);
const result = bundler.getMetadataBundle();
expect(result.metadata.exports).toEqual([
{from: 'external_two'}, {
export: [{name: 'E', as: 'E'}, {name: 'F', as: 'F'}, {name: 'G', as: 'G'}],
from: 'external_one'
}
]);
expect(result.metadata.origins !['E']).toBeUndefined();
});
it('should be able to de-duplicate symbols of re-exported modules', () => {
const host = new MockStringBundlerHost('/', {
'public-api.ts': `
export {A as A2, A, B as B1, B as B2} from './src/core';
export {A as A3} from './src/alternate';
`,
'src': {
'core.ts': `
export class A {}
export class B {}
`,
'alternate.ts': `
export class A {}
`,
}
});
const bundler = new MetadataBundler('/public-api', undefined, host);
const result = bundler.getMetadataBundle();
const {A, A2, A3, B1, B2} = result.metadata.metadata as{
A: ClassMetadata,
A2: MetadataGlobalReferenceExpression,
A3: ClassMetadata,
B1: ClassMetadata,
B2: MetadataGlobalReferenceExpression
};
expect(A.__symbolic).toEqual('class');
expect(A2.__symbolic).toEqual('reference');
expect(A2.name).toEqual('A');
expect(A3.__symbolic).toEqual('class');
expect(B1.__symbolic).toEqual('class');
expect(B2.__symbolic).toEqual('reference');
expect(B2.name).toEqual('B1');
});
});
export class MockStringBundlerHost implements MetadataBundlerHost {
collector = new MetadataCollector();
constructor(private dirName: string, private directory: Directory) {}
getMetadataFor(moduleName: string): ModuleMetadata|undefined {
const fileName = path.join(this.dirName, moduleName) + '.ts';
const text = open(this.directory, fileName);
if (typeof text == 'string') {
const sourceFile = ts.createSourceFile(
fileName, text, ts.ScriptTarget.Latest, /* setParent */ true, ts.ScriptKind.TS);
const diagnostics: ts.Diagnostic[] = (sourceFile as any).parseDiagnostics;
if (diagnostics && diagnostics.length) {
throw Error('Unexpected syntax error in test');
}
const result = this.collector.getMetadata(sourceFile);
return result;
}
}
}
export const SIMPLE_LIBRARY = {
'lib': {
'index.ts': `
export * from './src/index';
`,
'src': {
'index.ts': `
export {One, OneMore, ONE_CLASSES} from './one';
export {Two, TwoMore, TWO_CLASSES} from './two/index';
`,
'one.ts': `
export class One {}
export class OneMore extends One {}
export class PrivateOne {}
export const ONE_CLASSES = [One, OneMore, PrivateOne];
`,
'two': {
'index.ts': `
export class Two {}
export class TwoMore extends Two {}
export class PrivateTwo {}
export const TWO_CLASSES = [Two, TwoMore, PrivateTwo];
`
}
}
}
};