angular-docs-cn/modules/angular2/test/compiler/style_compiler_spec.ts

322 lines
13 KiB
TypeScript

import {
ddescribe,
describe,
xdescribe,
it,
iit,
xit,
expect,
beforeEach,
afterEach,
AsyncTestCompleter,
inject,
beforeEachBindings
} from 'angular2/test_lib';
import {bind} from 'angular2/src/core/di';
import {SpyXHR} from '../core/spies';
import {XHR} from 'angular2/src/core/render/xhr';
import {BaseException, WrappedException} from 'angular2/src/core/facade/exceptions';
import {CONST_EXPR, isPresent, isBlank, StringWrapper} from 'angular2/src/core/facade/lang';
import {PromiseWrapper, Promise} from 'angular2/src/core/facade/async';
import {evalModule} from './eval_module';
import {StyleCompiler} from 'angular2/src/compiler/style_compiler';
import {
CompileDirectiveMetadata,
CompileTemplateMetadata,
CompileTypeMetadata
} from 'angular2/src/compiler/directive_metadata';
import {SourceExpression, SourceModule} from 'angular2/src/compiler/source_module';
import {ViewEncapsulation} from 'angular2/src/core/render/api';
import {TEST_BINDINGS} from './test_bindings';
import {codeGenValueFn, codeGenExportVariable} from 'angular2/src/compiler/util';
// Attention: These module names have to correspond to real modules!
const MODULE_NAME = 'angular2/test/compiler/style_compiler_spec';
const IMPORT_ABS_MODULE_NAME = 'angular2/test/compiler/style_compiler_import';
const IMPORT_REL_MODULE_NAME = './style_compiler_import';
// Note: Not a real module, only used via mocks.
const IMPORT_ABS_MODULE_NAME_WITH_IMPORT =
'angular2/test/compiler/style_compiler_transitive_import';
export function main() {
describe('StyleCompiler', () => {
var xhr: SpyXHR;
beforeEachBindings(() => {
xhr = <any>new SpyXHR();
return [TEST_BINDINGS, bind(XHR).toValue(xhr)];
});
var compiler: StyleCompiler;
beforeEach(inject([StyleCompiler], (_compiler) => { compiler = _compiler; }));
function comp(styles: string[], styleAbsUrls: string[], encapsulation: ViewEncapsulation):
CompileDirectiveMetadata {
return CompileDirectiveMetadata.create({
type: new CompileTypeMetadata({id: 23, moduleId: 'someUrl'}),
template: new CompileTemplateMetadata(
{styles: styles, styleUrls: styleAbsUrls, encapsulation: encapsulation})
});
}
describe('compileComponentRuntime', () => {
var xhrUrlResults;
var xhrCount;
beforeEach(() => {
xhrCount = 0;
xhrUrlResults = {};
xhrUrlResults[IMPORT_ABS_MODULE_NAME] = 'span {color: blue}';
xhrUrlResults[IMPORT_ABS_MODULE_NAME_WITH_IMPORT] =
`a {color: green}@import ${IMPORT_REL_MODULE_NAME};`;
});
function compile(styles: string[], styleAbsUrls: string[], encapsulation: ViewEncapsulation):
Promise<string[]> {
// Note: Can't use MockXHR as the xhr is called recursively,
// so we can't trigger flush.
xhr.spy('get').andCallFake((url) => {
var response = xhrUrlResults[url];
xhrCount++;
if (isBlank(response)) {
throw new BaseException(`Unexpected url ${url}`);
}
return PromiseWrapper.resolve(response);
});
return compiler.compileComponentRuntime(comp(styles, styleAbsUrls, encapsulation));
}
describe('no shim', () => {
var encapsulation = ViewEncapsulation.None;
it('should compile plain css rules', inject([AsyncTestCompleter], (async) => {
compile(['div {color: red}', 'span {color: blue}'], [], encapsulation)
.then(styles => {
expect(styles).toEqual(['div {color: red}', 'span {color: blue}']);
async.done();
});
}));
it('should allow to import rules', inject([AsyncTestCompleter], (async) => {
compile(['div {color: red}'], [IMPORT_ABS_MODULE_NAME], encapsulation)
.then(styles => {
expect(styles).toEqual(['div {color: red}', 'span {color: blue}']);
async.done();
});
}));
it('should allow to import rules transitively', inject([AsyncTestCompleter], (async) => {
compile(['div {color: red}'], [IMPORT_ABS_MODULE_NAME_WITH_IMPORT], encapsulation)
.then(styles => {
expect(styles)
.toEqual(['div {color: red}', 'a {color: green}', 'span {color: blue}']);
async.done();
});
}));
});
describe('with shim', () => {
var encapsulation = ViewEncapsulation.Emulated;
it('should compile plain css rules', inject([AsyncTestCompleter], (async) => {
compile(['div {\ncolor: red;\n}', 'span {\ncolor: blue;\n}'], [], encapsulation)
.then(styles => {
expect(styles).toEqual([
'div[_ngcontent-23] {\ncolor: red;\n}',
'span[_ngcontent-23] {\ncolor: blue;\n}'
]);
async.done();
});
}));
it('should allow to import rules', inject([AsyncTestCompleter], (async) => {
compile(['div {\ncolor: red;\n}'], [IMPORT_ABS_MODULE_NAME], encapsulation)
.then(styles => {
expect(styles).toEqual([
'div[_ngcontent-23] {\ncolor: red;\n}',
'span[_ngcontent-23] {\ncolor: blue;\n}'
]);
async.done();
});
}));
it('should allow to import rules transitively', inject([AsyncTestCompleter], (async) => {
compile(['div {\ncolor: red;\n}'], [IMPORT_ABS_MODULE_NAME_WITH_IMPORT], encapsulation)
.then(styles => {
expect(styles).toEqual([
'div[_ngcontent-23] {\ncolor: red;\n}',
'a[_ngcontent-23] {\ncolor: green;\n}',
'span[_ngcontent-23] {\ncolor: blue;\n}'
]);
async.done();
});
}));
});
it('should cache stylesheets for parallel requests', inject([AsyncTestCompleter], (async) => {
PromiseWrapper.all([
compile([], [IMPORT_ABS_MODULE_NAME], ViewEncapsulation.None),
compile([], [IMPORT_ABS_MODULE_NAME], ViewEncapsulation.None)
])
.then((styleArrays) => {
expect(styleArrays[0]).toEqual(['span {color: blue}']);
expect(styleArrays[1]).toEqual(['span {color: blue}']);
expect(xhrCount).toBe(1);
async.done();
});
}));
it('should cache stylesheets for serial requests', inject([AsyncTestCompleter], (async) => {
compile([], [IMPORT_ABS_MODULE_NAME], ViewEncapsulation.None)
.then((styles0) => {
xhrUrlResults[IMPORT_ABS_MODULE_NAME] = 'span {color: black}';
return compile([], [IMPORT_ABS_MODULE_NAME], ViewEncapsulation.None)
.then((styles1) => {
expect(styles0).toEqual(['span {color: blue}']);
expect(styles1).toEqual(['span {color: blue}']);
expect(xhrCount).toBe(1);
async.done();
});
});
}));
it('should allow to clear the cache', inject([AsyncTestCompleter], (async) => {
compile([], [IMPORT_ABS_MODULE_NAME], ViewEncapsulation.None)
.then((_) => {
compiler.clearCache();
xhrUrlResults[IMPORT_ABS_MODULE_NAME] = 'span {color: black}';
return compile([], [IMPORT_ABS_MODULE_NAME], ViewEncapsulation.None);
})
.then((styles) => {
expect(xhrCount).toBe(2);
expect(styles).toEqual(['span {color: black}']);
async.done();
});
}));
});
describe('compileComponentCodeGen', () => {
function compile(styles: string[], styleAbsUrls: string[], encapsulation: ViewEncapsulation):
Promise<string[]> {
var sourceExpression =
compiler.compileComponentCodeGen(comp(styles, styleAbsUrls, encapsulation));
var sourceWithImports = testableExpression(sourceExpression).getSourceWithImports();
return evalModule(sourceWithImports.source, sourceWithImports.imports, null);
};
describe('no shim', () => {
var encapsulation = ViewEncapsulation.None;
it('should compile plain css ruless', inject([AsyncTestCompleter], (async) => {
compile(['div {color: red}', 'span {color: blue}'], [], encapsulation)
.then(styles => {
expect(styles).toEqual(['div {color: red}', 'span {color: blue}']);
async.done();
});
}));
it('should compile css rules with newlines and quotes',
inject([AsyncTestCompleter], (async) => {
compile(['div\n{"color": \'red\'}'], [], encapsulation)
.then(styles => {
expect(styles).toEqual(['div\n{"color": \'red\'}']);
async.done();
});
}));
it('should allow to import rules', inject([AsyncTestCompleter], (async) => {
compile(['div {color: red}'], [IMPORT_ABS_MODULE_NAME], encapsulation)
.then(styles => {
expect(styles).toEqual(['div {color: red}', 'span {color: blue}']);
async.done();
});
}));
});
describe('with shim', () => {
var encapsulation = ViewEncapsulation.Emulated;
it('should compile plain css ruless', inject([AsyncTestCompleter], (async) => {
compile(['div {\ncolor: red;\n}', 'span {\ncolor: blue;\n}'], [], encapsulation)
.then(styles => {
expect(styles).toEqual([
'div[_ngcontent-23] {\ncolor: red;\n}',
'span[_ngcontent-23] {\ncolor: blue;\n}'
]);
async.done();
});
}));
it('should allow to import rules', inject([AsyncTestCompleter], (async) => {
compile(['div {color: red}'], [IMPORT_ABS_MODULE_NAME], encapsulation)
.then(styles => {
expect(styles).toEqual([
'div[_ngcontent-23] {\ncolor: red;\n}',
'span[_ngcontent-23] {\ncolor: blue;\n}'
]);
async.done();
});
}));
});
});
describe('compileStylesheetCodeGen', () => {
function compile(style: string): Promise<string[]> {
var sourceModules = compiler.compileStylesheetCodeGen(MODULE_NAME, style);
return PromiseWrapper.all(sourceModules.map(sourceModule => {
var sourceWithImports = testableModule(sourceModule).getSourceWithImports();
return evalModule(sourceWithImports.source, sourceWithImports.imports, null);
}));
}
it('should compile plain css rules', inject([AsyncTestCompleter], (async) => {
compile('div {color: red;}')
.then(stylesAndShimStyles => {
expect(stylesAndShimStyles)
.toEqual(
[['div {color: red;}'], ['div[_ngcontent-%COMP%] {\ncolor: red;\n}']]);
async.done();
});
}));
it('should allow to import rules with relative paths',
inject([AsyncTestCompleter], (async) => {
compile(`div {color: red}@import ${IMPORT_REL_MODULE_NAME};`)
.then(stylesAndShimStyles => {
expect(stylesAndShimStyles)
.toEqual([
['div {color: red}', 'span {color: blue}'],
[
'div[_ngcontent-%COMP%] {\ncolor: red;\n}',
'span[_ngcontent-%COMP%] {\ncolor: blue;\n}'
]
]);
async.done();
});
}));
});
});
}
function testableExpression(source: SourceExpression): SourceModule {
var testableSource = `${source.declarations.join('\n')}
${codeGenExportVariable('run')}${codeGenValueFn(['_'], source.expression)};`;
return new SourceModule(null, testableSource);
}
function testableModule(sourceModule: SourceModule): SourceModule {
var testableSource = `${sourceModule.sourceWithModuleRefs}
${codeGenExportVariable('run')}${codeGenValueFn(['_'], 'STYLES')};`;
return new SourceModule(sourceModule.moduleId, testableSource);
}
// Needed for Android browsers which add an extra space at the end of some lines
function compareStyles(styles: string[], expectedStyles: string[]) {
expect(styles.length).toEqual(expectedStyles.length);
for (var i = 0; i < styles.length; i++) {
expect(StringWrapper.replaceAll(styles[i], /\s+\n/g, '\n')).toEqual(expectedStyles[i]);
}
}