angular-docs-cn/modules/angular2/test/render/dom/compiler/directive_parser_spec.js

291 lines
10 KiB
JavaScript

import {describe, beforeEach, it, xit, expect, iit, ddescribe, el} from 'angular2/test_lib';
import {isPresent, isBlank, assertionsEnabled} from 'angular2/src/facade/lang';
import {ListWrapper, MapWrapper, StringMapWrapper} from 'angular2/src/facade/collection';
import {DOM} from 'angular2/src/dom/dom_adapter';
import {DirectiveParser} from 'angular2/src/render/dom/compiler/directive_parser';
import {CompilePipeline} from 'angular2/src/render/dom/compiler/compile_pipeline';
import {CompileStep} from 'angular2/src/render/dom/compiler/compile_step';
import {CompileElement} from 'angular2/src/render/dom/compiler/compile_element';
import {CompileControl} from 'angular2/src/render/dom/compiler/compile_control';
import {ViewDefinition, DirectiveMetadata} from 'angular2/src/render/api';
import {Lexer, Parser} from 'angular2/change_detection';
export function main() {
describe('DirectiveParser', () => {
var parser, annotatedDirectives;
beforeEach( () => {
annotatedDirectives = [
someComponent,
someComponent2,
someDirective,
someDirectiveIgnoringChildren,
decoratorWithMultipleAttrs,
someDirectiveWithProps,
someDirectiveWithHostProperties,
someDirectiveWithHostAttributes,
someDirectiveWithEvents,
someDirectiveWithGlobalEvents
];
parser = new Parser(new Lexer());
});
function createPipeline(propertyBindings = null, directives = null) {
if (isBlank(directives)) directives = annotatedDirectives;
return new CompilePipeline([
new MockStep( (parent, current, control) => {
if (isPresent(propertyBindings)) {
StringMapWrapper.forEach(propertyBindings, (ast, name) => {
current.bindElement().bindProperty(name, ast);
});
}
}),
new DirectiveParser(parser, directives)
]);
}
function process(el, propertyBindings = null, directives = null) {
var pipeline = createPipeline(propertyBindings, directives);
return ListWrapper.map(pipeline.process(el), (ce) => ce.inheritedElementBinder );
}
it('should not add directives if they are not used', () => {
var results = process(el('<div></div>'));
expect(results[0]).toBe(null);
});
it('should detect directives in attributes', () => {
var results = process(el('<div some-decor></div>'));
expect(results[0].directives[0].directiveIndex).toBe(
annotatedDirectives.indexOf(someDirective)
);
});
it('should detect directives with multiple attributes', () => {
var results = process(el('<input type=text control=one></input>'));
expect(results[0].directives[0].directiveIndex).toBe(
annotatedDirectives.indexOf(decoratorWithMultipleAttrs)
);
});
it('should compile children by default', () => {
var results = createPipeline().process(el('<div some-decor></div>'));
expect(results[0].compileChildren).toEqual(true);
});
it('should stop compiling children when specified in the directive config', () => {
var results = createPipeline().process(el('<div some-decor-ignoring-children></div>'));
expect(results[0].compileChildren).toEqual(false);
});
it('should bind directive properties from bound properties', () => {
var results = process(
el('<div some-decor-props></div>'),
{
'elProp': parser.parseBinding('someExpr', '')
}
);
var directiveBinding = results[0].directives[0];
expect(MapWrapper.get(directiveBinding.propertyBindings, 'dirProp').source)
.toEqual('someExpr');
});
it('should bind directive properties with pipes', () => {
var results = process(
el('<div some-decor-props></div>'),
{
'elProp': parser.parseBinding('someExpr', '')
}
);
var directiveBinding = results[0].directives[0];
var pipedProp = MapWrapper.get(directiveBinding.propertyBindings, 'doubleProp');
var simpleProp = MapWrapper.get(directiveBinding.propertyBindings, 'dirProp');
expect(pipedProp.ast.name).toEqual('double');
expect(pipedProp.ast.exp).toEqual(simpleProp.ast);
expect(simpleProp.source).toEqual('someExpr');
});
it('should bind directive properties from attribute values', () => {
var results = process(
el('<div some-decor-props el-prop="someValue"></div>')
);
var directiveBinding = results[0].directives[0];
var simpleProp = MapWrapper.get(directiveBinding.propertyBindings, 'dirProp');
expect(simpleProp.source).toEqual('someValue');
});
it('should bind host directive properties', () => {
var element = el('<input some-decor-with-host-props>');
var results = process(element);
var directiveBinding = results[0].directives[0];
var ast = MapWrapper.get(directiveBinding.hostPropertyBindings, 'hostProperty');
expect(ast.source).toEqual('dirProp');
});
it('should set host element attributes', () => {
var element = el('<input some-decor-with-host-attrs>');
var results = process(element);
expect(DOM.getAttribute(results[0].element, 'attr_name')).toEqual('attr_val');
});
it('should not set host element attribute if an attribute already exists', () => {
var element = el('<input attr_name="initial" some-decor-with-host-attrs>');
var results = process(element);
expect(DOM.getAttribute(results[0].element, 'attr_name')).toEqual('initial');
DOM.removeAttribute(element, 'attr_name');
results = process(element);
expect(DOM.getAttribute(results[0].element, 'attr_name')).toEqual('attr_val');
});
it('should read attribute values', () => {
var element = el('<input some-decor-props some-attr="someValue">');
var results = process(element);
expect(MapWrapper.get(results[0].readAttributes, 'some-attr')).toEqual('someValue');
});
it('should bind directive events', () => {
var results = process(
el('<div some-decor-events></div>')
);
var directiveBinding = results[0].directives[0];
expect(directiveBinding.eventBindings.length).toEqual(1);
var eventBinding = directiveBinding.eventBindings[0];
expect(eventBinding.fullName).toEqual('click');
expect(eventBinding.source.source).toEqual('doIt()');
});
it('should bind directive global events', () => {
var results = process(
el('<div some-decor-globalevents></div>')
);
var directiveBinding = results[0].directives[0];
expect(directiveBinding.eventBindings.length).toEqual(1);
var eventBinding = directiveBinding.eventBindings[0];
expect(eventBinding.fullName).toEqual('window:resize');
expect(eventBinding.source.source).toEqual('doItGlobal()');
});
//TODO: assertions should be enabled when running tests: https://github.com/angular/angular/issues/1340
describe('component directives', () => {
it('should save the component id', () => {
var results = process(
el('<some-comp></some-comp>')
);
expect(results[0].componentId).toEqual('someComponent');
});
it('should throw when the provided selector is not an element selector', () => {
expect( () => {
createPipeline(null, [componentWithNonElementSelector]);
}).toThrowError(`Component 'componentWithNonElementSelector' can only have an element selector, but had '[attr]'`);
});
it('should not allow multiple component directives on the same element', () => {
expect( () => {
process(
el('<some-comp></some-comp>'),
null,
[someComponent, someComponentDup]
);
}).toThrowError(new RegExp('Only one component directive is allowed per element' ));
});
});
});
}
class MockStep extends CompileStep {
processClosure:Function;
constructor(process) {
super();
this.processClosure = process;
}
process(parent:CompileElement, current:CompileElement, control:CompileControl) {
this.processClosure(parent, current, control);
}
}
var someComponent = new DirectiveMetadata({
selector: 'some-comp',
id: 'someComponent',
type: DirectiveMetadata.COMPONENT_TYPE
});
var someComponentDup = new DirectiveMetadata({
selector: 'some-comp',
id: 'someComponentDup',
type: DirectiveMetadata.COMPONENT_TYPE
});
var someComponent2 = new DirectiveMetadata({
selector: 'some-comp2',
id: 'someComponent2',
type: DirectiveMetadata.COMPONENT_TYPE
});
var someDirective = new DirectiveMetadata({
selector: '[some-decor]',
type: DirectiveMetadata.DIRECTIVE_TYPE
});
var someDirectiveIgnoringChildren = new DirectiveMetadata({
selector: '[some-decor-ignoring-children]',
compileChildren: false,
type: DirectiveMetadata.DIRECTIVE_TYPE
});
var decoratorWithMultipleAttrs = new DirectiveMetadata({
selector: 'input[type=text][control]',
id: 'decoratorWithMultipleAttrs',
type: DirectiveMetadata.DIRECTIVE_TYPE
});
var someDirectiveWithProps = new DirectiveMetadata({
selector: '[some-decor-props]',
properties: MapWrapper.createFromStringMap({
'dirProp': 'elProp',
'doubleProp': 'elProp | double'
}),
readAttributes: ['some-attr']
});
var someDirectiveWithHostProperties = new DirectiveMetadata({
selector: '[some-decor-with-host-props]',
hostProperties: MapWrapper.createFromStringMap({
'dirProp': 'hostProperty'
})
});
var someDirectiveWithHostAttributes = new DirectiveMetadata({
selector: '[some-decor-with-host-attrs]',
hostAttributes: MapWrapper.createFromStringMap({
'attr_name': 'attr_val'
})
});
var someDirectiveWithEvents = new DirectiveMetadata({
selector: '[some-decor-events]',
hostListeners: MapWrapper.createFromStringMap({
'click': 'doIt()'
})
});
var someDirectiveWithGlobalEvents = new DirectiveMetadata({
selector: '[some-decor-globalevents]',
hostListeners: MapWrapper.createFromStringMap({
'window:resize': 'doItGlobal()'
})
});
var componentWithNonElementSelector = new DirectiveMetadata({
id: 'componentWithNonElementSelector',
selector: '[attr]',
type: DirectiveMetadata.COMPONENT_TYPE
});