401 lines
		
	
	
		
			16 KiB
		
	
	
	
		
			TypeScript
		
	
	
	
	
	
			
		
		
	
	
			401 lines
		
	
	
		
			16 KiB
		
	
	
	
		
			TypeScript
		
	
	
	
	
	
import {
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  ddescribe,
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  describe,
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  xdescribe,
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  it,
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  iit,
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  xit,
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  expect,
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  beforeEach,
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  afterEach,
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  AsyncTestCompleter,
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  inject,
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  beforeEachBindings
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} from 'angular2/testing_internal';
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import {Promise, PromiseWrapper} from 'angular2/src/facade/async';
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import {Type, isPresent, isBlank, stringify, isString} from 'angular2/src/facade/lang';
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import {MapWrapper, SetWrapper, ListWrapper} from 'angular2/src/facade/collection';
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import {RuntimeMetadataResolver} from 'angular2/src/compiler/runtime_metadata';
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import {
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  TemplateCompiler,
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  NormalizedComponentWithViewDirectives
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} from 'angular2/src/compiler/template_compiler';
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import {CompileDirectiveMetadata} from 'angular2/src/compiler/directive_metadata';
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import {evalModule} from './eval_module';
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import {SourceModule, moduleRef} from 'angular2/src/compiler/source_module';
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import {XHR} from 'angular2/src/compiler/xhr';
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import {MockXHR} from 'angular2/src/compiler/xhr_mock';
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import {ViewEncapsulation} from 'angular2/src/core/metadata/view';
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import {Locals} from 'angular2/src/core/change_detection/change_detection';
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import {
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  CommandVisitor,
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  TextCmd,
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  NgContentCmd,
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  BeginElementCmd,
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  BeginComponentCmd,
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  EmbeddedTemplateCmd,
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  TemplateCmd,
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  visitAllCommands,
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  CompiledComponentTemplate
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} from 'angular2/src/core/linker/template_commands';
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import {Component, View, Directive, provide} from 'angular2/core';
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import {TEST_PROVIDERS} from './test_bindings';
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import {TestDispatcher, TestPipes} from './change_detector_mocks';
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import {codeGenValueFn, codeGenExportVariable, MODULE_SUFFIX} from 'angular2/src/compiler/util';
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// Attention: This path has to point to this test file!
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const THIS_MODULE_ID = 'angular2/test/compiler/template_compiler_spec';
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var THIS_MODULE_REF = moduleRef(`package:${THIS_MODULE_ID}${MODULE_SUFFIX}`);
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export function main() {
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  describe('TemplateCompiler', () => {
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    var compiler: TemplateCompiler;
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    var runtimeMetadataResolver: RuntimeMetadataResolver;
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    beforeEachBindings(() => TEST_PROVIDERS);
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    beforeEach(inject([TemplateCompiler, RuntimeMetadataResolver],
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                      (_compiler, _runtimeMetadataResolver) => {
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                        compiler = _compiler;
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                        runtimeMetadataResolver = _runtimeMetadataResolver;
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                      }));
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    describe('compile templates', () => {
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      function runTests(compile) {
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        it('should throw for non components', inject([AsyncTestCompleter], (async) => {
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             PromiseWrapper.catchError(PromiseWrapper.wrap(() => compile([NonComponent])), (error) => {
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               expect(error.message)
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                   .toEqual(
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                       `Could not compile '${stringify(NonComponent)}' because it is not a component.`);
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               async.done();
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             });
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           }));
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        it('should compile host components', inject([AsyncTestCompleter], (async) => {
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             compile([CompWithBindingsAndStyles])
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                 .then((humanizedTemplate) => {
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                   expect(humanizedTemplate['styles']).toEqual([]);
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                   expect(humanizedTemplate['commands'][0]).toEqual('<comp-a>');
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                   expect(humanizedTemplate['cd']).toEqual(['elementProperty(title)=someDirValue']);
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                   async.done();
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                 });
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           }));
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        it('should compile nested components', inject([AsyncTestCompleter], (async) => {
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             compile([CompWithBindingsAndStyles])
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                 .then((humanizedTemplate) => {
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                   var nestedTemplate = humanizedTemplate['commands'][1];
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                   expect(nestedTemplate['styles']).toEqual(['div {color: red}']);
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                   expect(nestedTemplate['commands'][0]).toEqual('<a>');
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                   expect(nestedTemplate['cd']).toEqual(['elementProperty(href)=someCtxValue']);
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                   async.done();
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                 });
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           }));
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        it('should compile recursive components', inject([AsyncTestCompleter], (async) => {
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             compile([TreeComp])
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                 .then((humanizedTemplate) => {
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                   expect(humanizedTemplate['commands'][0]).toEqual('<tree>');
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                   expect(humanizedTemplate['commands'][1]['commands'][0]).toEqual('<tree>');
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                   expect(humanizedTemplate['commands'][1]['commands'][1]['commands'][0])
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                       .toEqual('<tree>');
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                   async.done();
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                 });
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           }));
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        it('should pass the right change detector to embedded templates',
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           inject([AsyncTestCompleter], (async) => {
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             compile([CompWithEmbeddedTemplate])
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                 .then((humanizedTemplate) => {
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                   expect(humanizedTemplate['commands'][1]['commands'][0]).toEqual('<template>');
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                   expect(humanizedTemplate['commands'][1]['commands'][1]['cd'])
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                       .toEqual(['elementProperty(href)=someCtxValue']);
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                   async.done();
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                 });
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           }));
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      }
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      xdescribe('compileHostComponentRuntime', () => {
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        function compile(components: Type[]): Promise<any[]> {
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          return compiler.compileHostComponentRuntime(components[0])
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              .then((compiledHostTemplate) => humanizeTemplate(compiledHostTemplate.template));
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        }
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        runTests(compile);
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        it('should cache components for parallel requests',
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           inject([AsyncTestCompleter, XHR], (async, xhr: MockXHR) => {
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             xhr.expect('package:angular2/test/compiler/compUrl.html', 'a');
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             PromiseWrapper.all([compile([CompWithTemplateUrl]), compile([CompWithTemplateUrl])])
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                 .then((humanizedTemplates) => {
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                   expect(humanizedTemplates[0]['commands'][1]['commands']).toEqual(['#text(a)']);
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                   expect(humanizedTemplates[1]['commands'][1]['commands']).toEqual(['#text(a)']);
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                   async.done();
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                 });
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             xhr.flush();
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           }));
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        it('should cache components for sequential requests',
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           inject([AsyncTestCompleter, XHR], (async, xhr: MockXHR) => {
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             xhr.expect('package:angular2/test/compiler/compUrl.html', 'a');
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             compile([CompWithTemplateUrl])
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                 .then((humanizedTemplate0) => {
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                   return compile([CompWithTemplateUrl])
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                       .then((humanizedTemplate1) => {
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                         expect(humanizedTemplate0['commands'][1]['commands'])
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                             .toEqual(['#text(a)']);
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                         expect(humanizedTemplate1['commands'][1]['commands'])
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                             .toEqual(['#text(a)']);
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                         async.done();
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                       });
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                 });
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             xhr.flush();
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           }));
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        it('should allow to clear the cache',
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           inject([AsyncTestCompleter, XHR], (async, xhr: MockXHR) => {
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             xhr.expect('package:angular2/test/compiler/compUrl.html', 'a');
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             compile([CompWithTemplateUrl])
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                 .then((humanizedTemplate) => {
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                   compiler.clearCache();
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                   xhr.expect('package:angular2/test/compiler/compUrl.html', 'b');
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                   var result = compile([CompWithTemplateUrl]);
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                   xhr.flush();
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                   return result;
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                 })
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                 .then((humanizedTemplate) => {
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                   expect(humanizedTemplate['commands'][1]['commands']).toEqual(['#text(b)']);
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                   async.done();
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                 });
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             xhr.flush();
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           }));
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      });
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      describe('compileTemplatesCodeGen', () => {
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        function normalizeComponent(
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            component: Type): Promise<NormalizedComponentWithViewDirectives> {
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          var compAndViewDirMetas = [runtimeMetadataResolver.getMetadata(component)].concat(
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              runtimeMetadataResolver.getViewDirectivesMetadata(component));
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          return PromiseWrapper.all(compAndViewDirMetas.map(
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                                        meta => compiler.normalizeDirectiveMetadata(meta)))
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              .then((normalizedCompAndViewDirMetas: CompileDirectiveMetadata[]) =>
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                        new NormalizedComponentWithViewDirectives(
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                            normalizedCompAndViewDirMetas[0],
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                            normalizedCompAndViewDirMetas.slice(1)));
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        }
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        function compile(components: Type[]): Promise<any[]> {
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          return PromiseWrapper.all(components.map(normalizeComponent))
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              .then((normalizedCompWithViewDirMetas: NormalizedComponentWithViewDirectives[]) => {
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                var sourceModule = compiler.compileTemplatesCodeGen(normalizedCompWithViewDirMetas);
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                var sourceWithImports =
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                    testableTemplateModule(sourceModule,
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                                           normalizedCompWithViewDirMetas[0].component)
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                        .getSourceWithImports();
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                return evalModule(sourceWithImports.source, sourceWithImports.imports, null);
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              });
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        }
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        runTests(compile);
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      });
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    });
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    describe('normalizeDirectiveMetadata', () => {
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      it('should return the given DirectiveMetadata for non components',
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         inject([AsyncTestCompleter], (async) => {
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           var meta = runtimeMetadataResolver.getMetadata(NonComponent);
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           compiler.normalizeDirectiveMetadata(meta).then(normMeta => {
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             expect(normMeta).toBe(meta);
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             async.done();
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           });
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         }));
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      it('should normalize the template',
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         inject([AsyncTestCompleter, XHR], (async, xhr: MockXHR) => {
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           xhr.expect('package:angular2/test/compiler/compUrl.html', 'loadedTemplate');
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           compiler.normalizeDirectiveMetadata(
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                       runtimeMetadataResolver.getMetadata(CompWithTemplateUrl))
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               .then((meta: CompileDirectiveMetadata) => {
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                 expect(meta.template.template).toEqual('loadedTemplate');
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                 async.done();
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               });
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           xhr.flush();
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         }));
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      it('should copy all the other fields', inject([AsyncTestCompleter], (async) => {
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           var meta = runtimeMetadataResolver.getMetadata(CompWithBindingsAndStyles);
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           compiler.normalizeDirectiveMetadata(meta).then((normMeta: CompileDirectiveMetadata) => {
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             expect(normMeta.type).toEqual(meta.type);
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             expect(normMeta.isComponent).toEqual(meta.isComponent);
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             expect(normMeta.dynamicLoadable).toEqual(meta.dynamicLoadable);
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             expect(normMeta.selector).toEqual(meta.selector);
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             expect(normMeta.exportAs).toEqual(meta.exportAs);
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             expect(normMeta.changeDetection).toEqual(meta.changeDetection);
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             expect(normMeta.inputs).toEqual(meta.inputs);
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             expect(normMeta.outputs).toEqual(meta.outputs);
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             expect(normMeta.hostListeners).toEqual(meta.hostListeners);
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             expect(normMeta.hostProperties).toEqual(meta.hostProperties);
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             expect(normMeta.hostAttributes).toEqual(meta.hostAttributes);
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             expect(normMeta.lifecycleHooks).toEqual(meta.lifecycleHooks);
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             async.done();
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           });
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         }));
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    });
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    describe('compileStylesheetCodeGen', () => {
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      it('should compile stylesheets into code', inject([AsyncTestCompleter], (async) => {
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           var cssText = 'div {color: red}';
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           var sourceModule =
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               compiler.compileStylesheetCodeGen('package:someModuleUrl', cssText)[0];
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           var sourceWithImports = testableStylesModule(sourceModule).getSourceWithImports();
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           evalModule(sourceWithImports.source, sourceWithImports.imports, null)
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               .then(loadedCssText => {
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                 expect(loadedCssText).toEqual([cssText]);
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                 async.done();
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               });
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         }));
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    });
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  });
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}
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@Component({
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  selector: 'comp-a',
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  host: {'[title]': 'someProp'},
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  moduleId: THIS_MODULE_ID,
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  exportAs: 'someExportAs'
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})
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@View({
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  template: '<a [href]="someProp"></a>',
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  styles: ['div {color: red}'],
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  encapsulation: ViewEncapsulation.None
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})
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class CompWithBindingsAndStyles {
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}
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@Component({selector: 'tree', moduleId: THIS_MODULE_ID})
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@View({template: '<tree></tree>', directives: [TreeComp], encapsulation: ViewEncapsulation.None})
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class TreeComp {
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}
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@Component({selector: 'comp-url', moduleId: THIS_MODULE_ID})
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@View({templateUrl: 'compUrl.html', encapsulation: ViewEncapsulation.None})
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class CompWithTemplateUrl {
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}
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@Component({selector: 'comp-tpl', moduleId: THIS_MODULE_ID})
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@View({
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  template: '<template><a [href]="someProp"></a></template>',
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  encapsulation: ViewEncapsulation.None
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})
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class CompWithEmbeddedTemplate {
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}
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@Directive({selector: 'plain', moduleId: THIS_MODULE_ID})
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@View({template: ''})
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class NonComponent {
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}
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function testableTemplateModule(sourceModule: SourceModule,
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                                normComp: CompileDirectiveMetadata): SourceModule {
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  var resultExpression =
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      `${THIS_MODULE_REF}humanizeTemplate(Host${normComp.type.name}Template.template)`;
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  var testableSource = `${sourceModule.sourceWithModuleRefs}
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  ${codeGenValueFn(['_'], resultExpression, '_run')};
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  ${codeGenExportVariable('run')}_run;`;
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  return new SourceModule(sourceModule.moduleUrl, testableSource);
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}
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function testableStylesModule(sourceModule: SourceModule): SourceModule {
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  var testableSource = `${sourceModule.sourceWithModuleRefs}
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  ${codeGenValueFn(['_'], 'STYLES', '_run')};
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  ${codeGenExportVariable('run')}_run;`;
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  return new SourceModule(sourceModule.moduleUrl, testableSource);
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}
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// Attention: read by eval!
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export function humanizeTemplate(
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    template: CompiledComponentTemplate,
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    humanizedTemplates: Map<string, {[key: string]: any}> = null): {[key: string]: any} {
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  if (isBlank(humanizedTemplates)) {
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    humanizedTemplates = new Map<string, {[key: string]: any}>();
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  }
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  var result = humanizedTemplates.get(template.id);
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  if (isPresent(result)) {
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    return result;
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  }
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  var commands = [];
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  result = {
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    'styles': template.styles,
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    'commands': commands,
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    'cd': testChangeDetector(template.changeDetectorFactory)
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  };
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  humanizedTemplates.set(template.id, result);
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  visitAllCommands(new CommandHumanizer(commands, humanizedTemplates), template.commands);
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  return result;
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}
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class TestContext implements CompWithBindingsAndStyles, TreeComp, CompWithTemplateUrl,
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    CompWithEmbeddedTemplate {
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  someProp: string;
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}
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function testChangeDetector(changeDetectorFactory: Function): string[] {
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  var ctx = new TestContext();
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  ctx.someProp = 'someCtxValue';
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  var dir1 = new TestContext();
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  dir1.someProp = 'someDirValue';
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  var dispatcher = new TestDispatcher([dir1], []);
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  var cd = changeDetectorFactory(dispatcher);
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  var locals = new Locals(null, MapWrapper.createFromStringMap({'someVar': null}));
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  cd.hydrate(ctx, locals, dispatcher, new TestPipes());
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  cd.detectChanges();
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  return dispatcher.log;
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}
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class CommandHumanizer implements CommandVisitor {
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  constructor(private result: any[],
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              private humanizedTemplates: Map<string, {[key: string]: any}>) {}
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  visitText(cmd: TextCmd, context: any): any {
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    this.result.push(`#text(${cmd.value})`);
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    return null;
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  }
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  visitNgContent(cmd: NgContentCmd, context: any): any { return null; }
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  visitBeginElement(cmd: BeginElementCmd, context: any): any {
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    this.result.push(`<${cmd.name}>`);
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    return null;
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  }
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  visitEndElement(context: any): any {
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    this.result.push('</>');
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    return null;
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  }
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  visitBeginComponent(cmd: BeginComponentCmd, context: any): any {
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    this.result.push(`<${cmd.name}>`);
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    this.result.push(humanizeTemplate(cmd.templateGetter(), this.humanizedTemplates));
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    return null;
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  }
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  visitEndComponent(context: any): any { return this.visitEndElement(context); }
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  visitEmbeddedTemplate(cmd: EmbeddedTemplateCmd, context: any): any {
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    this.result.push(`<template>`);
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    this.result.push({'cd': testChangeDetector(cmd.changeDetectorFactory)});
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    this.result.push(`</template>`);
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    return null;
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  }
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}
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