angular-cn/modules/angular2/test/services/ruler_spec.js

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import {AsyncTestCompleter, inject, ddescribe, describe, it, iit, xit, expect, SpyObject} from 'angular2/test_lib';
import {DOM, DomAdapter} from 'angular2/src/dom/dom_adapter';
import {NgElement} from 'angular2/src/core/compiler/ng_element';
import {Ruler, Rectangle} from 'angular2/src/services/ruler';
import {createRectangle} from './rectangle_mock';
class DomAdapterMock extends DomAdapter {
rect;
constructor(rect) {
super();
this.rect = rect;
}
getBoundingClientRect(elm) {
return this.rect;
}
}
function assertDimensions(rect: Rectangle, left, right, top, bottom, width, height) {
expect(rect.left).toEqual(left);
expect(rect.right).toEqual(right);
expect(rect.top).toEqual(top);
expect(rect.bottom).toEqual(bottom);
expect(rect.width).toEqual(width);
expect(rect.height).toEqual(height);
}
export function main() {
describe('ruler service', () => {
it('should allow measuring NgElements',
inject([AsyncTestCompleter], (async) => {
var ruler = new Ruler(new DomAdapterMock(createRectangle(10, 20, 200, 100)));
ruler.measure(new FakeNgElement(null)).then((rect) => {
assertDimensions(rect, 10, 210, 20, 120, 200, 100);
async.done();
});
}));
it('should return 0 for all rectangle values while measuring elements in a document fragment',
inject([AsyncTestCompleter], (async) => {
var ruler = new Ruler(DOM);
ruler.measure(new FakeNgElement(DOM.createElement('div'))).then((rect) => {
//here we are using an element created in a doc fragment so all the measures will come back as 0
assertDimensions(rect, 0, 0, 0, 0, 0, 0);
async.done();
});
}));
});
}
class FakeNgElement extends NgElement {
_domElement;
constructor(domElement) {
super(null, null);
this._domElement = domElement;
}
get domElement() {
return this._domElement;
}
}