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

310 lines
13 KiB
TypeScript

import {ddescribe, describe, xdescribe, it, iit, xit, expect, beforeEach, afterEach, AsyncTestCompleter, inject, beforeEachProviders} from 'angular2/testing_internal';
import {provide} from 'angular2/src/core/di';
import {SpyXHR} from './spies';
import {XHR} from 'angular2/src/compiler/xhr';
import {BaseException, WrappedException} from 'angular2/src/facade/exceptions';
import {CONST_EXPR, isPresent, isBlank, StringWrapper, isArray, IS_DART} from 'angular2/src/facade/lang';
import {PromiseWrapper} from 'angular2/src/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/metadata/view';
import {TEST_PROVIDERS} from './test_bindings';
import {codeGenValueFn, codeGenExportVariable, MODULE_SUFFIX} from 'angular2/src/compiler/util';
// Attention: These module names have to correspond to real modules!
var MODULE_URL = `package:angular2/test/compiler/style_compiler_spec${MODULE_SUFFIX}`;
var IMPORT_ABS_STYLESHEET_URL = `package:angular2/test/compiler/style_compiler_import.css`;
var IMPORT_REL_STYLESHEET_URL = './style_compiler_import.css';
// Note: Not a real module, only used via mocks.
var IMPORT_ABS_STYLESHEET_URL_WITH_IMPORT =
`package:angular2/test/compiler/style_compiler_transitive_import.css`;
export function main() {
// Dart's isolate support is broken, and these tests will be obsolote soon with
// https://github.com/angular/angular/issues/6270
if (IS_DART) {
return;
}
describe('StyleCompiler', () => {
var xhr: SpyXHR;
beforeEachProviders(() => {
xhr = <any>new SpyXHR();
return [TEST_PROVIDERS, provide(XHR, {useValue: xhr})];
});
var compiler: StyleCompiler;
beforeEach(inject([StyleCompiler], (_compiler) => { compiler = _compiler; }));
describe('compileComponentRuntime', () => {
var xhrUrlResults;
var xhrCount;
beforeEach(() => {
xhrCount = 0;
xhrUrlResults = {};
xhrUrlResults[IMPORT_ABS_STYLESHEET_URL] = 'span {color: blue}';
xhrUrlResults[IMPORT_ABS_STYLESHEET_URL_WITH_IMPORT] =
`a {color: green}@import ${IMPORT_REL_STYLESHEET_URL};`;
});
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(new CompileTemplateMetadata(
{styles: styles, styleUrls: styleAbsUrls, encapsulation: 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_STYLESHEET_URL], 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_STYLESHEET_URL_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 => {
compareStyles(styles, [
'div[_ngcontent-%COMP%] {\ncolor: red;\n}',
'span[_ngcontent-%COMP%] {\ncolor: blue;\n}'
]);
async.done();
});
}));
it('should allow to import rules', inject([AsyncTestCompleter], (async) => {
compile(['div {\ncolor: red;\n}'], [IMPORT_ABS_STYLESHEET_URL], encapsulation)
.then(styles => {
compareStyles(styles, [
'div[_ngcontent-%COMP%] {\ncolor: red;\n}',
['span[_ngcontent-%COMP%] {color: blue}']
]);
async.done();
});
}));
it('should allow to import rules transitively', inject([AsyncTestCompleter], (async) => {
compile(
['div {\ncolor: red;\n}'], [IMPORT_ABS_STYLESHEET_URL_WITH_IMPORT], encapsulation)
.then(styles => {
compareStyles(styles, [
'div[_ngcontent-%COMP%] {\ncolor: red;\n}',
[
'a[_ngcontent-%COMP%] {color: green}',
['span[_ngcontent-%COMP%] {color: blue}']
]
]);
async.done();
});
}));
});
it('should cache stylesheets for parallel requests', inject([AsyncTestCompleter], (async) => {
PromiseWrapper
.all([
compile([], [IMPORT_ABS_STYLESHEET_URL], ViewEncapsulation.None),
compile([], [IMPORT_ABS_STYLESHEET_URL], 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_STYLESHEET_URL], ViewEncapsulation.None).then((styles0) => {
xhrUrlResults[IMPORT_ABS_STYLESHEET_URL] = 'span {color: black}';
return compile([], [IMPORT_ABS_STYLESHEET_URL], 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_STYLESHEET_URL], ViewEncapsulation.None)
.then((_) => {
compiler.clearCache();
xhrUrlResults[IMPORT_ABS_STYLESHEET_URL] = 'span {color: black}';
return compile([], [IMPORT_ABS_STYLESHEET_URL], 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(new CompileTemplateMetadata(
{styles: styles, styleUrls: styleAbsUrls, encapsulation: 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 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 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_STYLESHEET_URL], encapsulation)
.then(styles => {
expect(styles).toEqual(['div {color: red}', ['span {color: blue}']]);
async.done();
});
}), 1000);
});
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 => {
compareStyles(styles, [
'div[_ngcontent-%COMP%] {\ncolor: red;\n}',
'span[_ngcontent-%COMP%] {\ncolor: blue;\n}'
]);
async.done();
});
}));
it('should allow to import rules', inject([AsyncTestCompleter], (async) => {
compile(['div {color: red}'], [IMPORT_ABS_STYLESHEET_URL], encapsulation)
.then(styles => {
compareStyles(styles, [
'div[_ngcontent-%COMP%] {color: red}',
['span[_ngcontent-%COMP%] {\ncolor: blue;\n}']
]);
async.done();
});
}), 1000);
});
});
describe('compileStylesheetCodeGen', () => {
function compile(style: string): Promise<string[][]> {
var sourceModules = compiler.compileStylesheetCodeGen(MODULE_URL, 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 => {
var expected = [['div {color: red;}'], ['div[_ngcontent-%COMP%] {color: red;}']];
compareStyles(stylesAndShimStyles[0], expected[0]);
compareStyles(stylesAndShimStyles[1], expected[1]);
async.done();
});
}));
it('should allow to import rules with relative paths',
inject([AsyncTestCompleter], (async) => {
compile(`div {color: red}@import ${IMPORT_REL_STYLESHEET_URL};`)
.then(stylesAndShimStyles => {
var expected = [
['div {color: red}', ['span {color: blue}']],
[
'div[_ngcontent-%COMP%] {color: red}',
['span[_ngcontent-%COMP%] {\ncolor: blue;\n}']
]
];
compareStyles(stylesAndShimStyles[0], expected[0]);
compareStyles(stylesAndShimStyles[1], expected[1]);
async.done();
});
}));
});
});
}
function testableExpression(source: SourceExpression): SourceModule {
var testableSource = `${source.declarations.join('\n')}
${codeGenValueFn(['_'], source.expression, '_run')};
${codeGenExportVariable('run')}_run;`;
return new SourceModule(null, testableSource);
}
function testableModule(sourceModule: SourceModule): SourceModule {
var testableSource = `${sourceModule.sourceWithModuleRefs}
${codeGenValueFn(['_'], 'STYLES', '_run')};
${codeGenExportVariable('run')}_run;`;
return new SourceModule(sourceModule.moduleUrl, testableSource);
}
// Needed for Android browsers which add an extra space at the end of some lines
function compareStyles(styles: Array<string|any[]>, expectedStyles: Array<string|any[]>) {
expect(styles.length).toEqual(expectedStyles.length);
for (var i = 0; i < styles.length; i++) {
var style = styles[i];
if (isArray(style)) {
compareStyles(<any[]>style, <any[]>expectedStyles[i]);
} else {
expect(StringWrapper.replaceAll(<string>style, /\s+\n/g, '\n')).toEqual(expectedStyles[i]);
}
}
}