angular-cn/modules/@angular/compiler-cli/test/reflector_host_spec.ts

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import {beforeEach, ddescribe, describe, expect, iit, it} from '@angular/core/testing/testing_internal';
import * as ts from 'typescript';
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import {ReflectorHost} from '../src/reflector_host';
import {Directory, Entry, MockCompilerHost, MockContext} from './mocks';
describe('reflector_host', () => {
var context: MockContext;
var host: ts.CompilerHost;
var program: ts.Program;
var reflectorHost: ReflectorHost;
beforeEach(() => {
context = new MockContext('/tmp/src', clone(FILES));
host = new MockCompilerHost(context)
program = ts.createProgram(
['main.ts'], {
module: ts.ModuleKind.CommonJS,
},
host);
// Force a typecheck
let errors = program.getSemanticDiagnostics();
if (errors && errors.length) {
throw new Error('Expected no errors');
}
reflectorHost = new ReflectorHost(
program, host, {
genDir: '/tmp/dist',
basePath: '/tmp/src',
skipMetadataEmit: false,
skipTemplateCodegen: false,
trace: false
},
context);
});
it('should provide the import locations for angular', () => {
let {coreDecorators, diDecorators, diMetadata, animationMetadata, provider} =
reflectorHost.angularImportLocations();
expect(coreDecorators).toEqual('@angular/core/src/metadata');
expect(diDecorators).toEqual('@angular/core/src/di/decorators');
expect(diMetadata).toEqual('@angular/core/src/di/metadata');
expect(animationMetadata).toEqual('@angular/core/src/animation/metadata');
expect(provider).toEqual('@angular/core/src/di/provider');
});
it('should be able to produce an import from main @angular/core', () => {
expect(reflectorHost.getImportPath('main.ts', 'node_modules/@angular/core.d.ts'))
.toEqual('@angular/core');
});
it('should be ble to produce an import from main to a sub-directory', () => {
expect(reflectorHost.getImportPath('main.ts', 'lib/utils.ts')).toEqual('./lib/utils');
});
it('should be able to produce an import from to a peer file', () => {
expect(reflectorHost.getImportPath('lib/utils.ts', 'lib/collections.ts'))
.toEqual('./collections');
});
it('should be able to produce an import from to a sibling directory', () => {
expect(reflectorHost.getImportPath('lib2/utils2.ts', 'lib/utils.ts')).toEqual('../lib/utils');
});
it('should be able to produce a symbol for an exported symbol', () => {
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expect(reflectorHost.findDeclaration('@angular/router-deprecated', 'foo', 'main.ts'))
.toBeDefined();
});
it('should be able to produce a symbol for values space only reference', () => {
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expect(
reflectorHost.findDeclaration('@angular/router-deprecated/src/providers', 'foo', 'main.ts'))
.toBeDefined();
});
it('should be produce the same symbol if asked twice', () => {
let foo1 = reflectorHost.getStaticSymbol('main.ts', 'foo');
let foo2 = reflectorHost.getStaticSymbol('main.ts', 'foo');
expect(foo1).toBe(foo2);
});
it('should be able to read a metadata file',
() => {
expect(reflectorHost.getMetadataFor('node_modules/@angular/core.d.ts'))
.toEqual({__symbolic: 'module', version: 1, metadata: {foo: {__symbolic: 'class'}}})});
});
const dummyModule = 'export let foo: any[];'
const FILES: Entry = {
'tmp': {
'src': {
'main.ts': `
import * as c from '@angular/core';
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import * as r from '@angular/router-deprecated';
import * as u from './lib/utils';
import * as cs from './lib/collections';
import * as u2 from './lib2/utils2';
`,
'lib': {
'utils.ts': dummyModule,
'collections.ts': dummyModule,
},
'lib2': {'utils2.ts': dummyModule},
'node_modules': {
'@angular': {
'core.d.ts': dummyModule,
'core.metadata.json':
`{"__symbolic":"module", "version": 1, "metadata": {"foo": {"__symbolic": "class"}}}`,
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'router-deprecated':
{'index.d.ts': dummyModule, 'src': {'providers.d.ts': dummyModule}}
}
}
}
}
}
function clone(entry: Entry): Entry {
if (typeof entry === 'string') {
return entry;
} else {
let result: Directory = {};
for (let name in entry) {
result[name] = clone(entry[name]);
}
return result;
}
}