angular-docs-cn/modules/angular2/test/di/key_spec.js

51 lines
1.4 KiB
JavaScript

import {describe, iit, it, expect, beforeEach} from 'angular2/test_lib';
import {Key, KeyRegistry} from 'angular2/di';
export function main() {
describe("key", function () {
var registry;
beforeEach(function () {
registry = new KeyRegistry();
});
it('should be equal to another key if type is the same', function () {
expect(registry.get('car')).toBe(registry.get('car'));
});
it('should not be equal to another key if types are different', function () {
expect(registry.get('car')).not.toBe(registry.get('porsche'));
});
it('should return the passed in key', function () {
expect(registry.get(registry.get('car'))).toBe(registry.get('car'));
});
describe("metadata", function () {
it("should assign metadata to a key", function () {
var key = registry.get('car');
Key.setMetadata(key, "meta");
expect(key.metadata).toEqual("meta");
});
it("should allow assigning the same metadata twice", function () {
var key = registry.get('car');
Key.setMetadata(key, "meta");
Key.setMetadata(key, "meta");
expect(key.metadata).toEqual("meta");
});
it("should throw when assigning different metadata", function () {
var key = registry.get('car');
Key.setMetadata(key, "meta1");
expect(() => Key.setMetadata(key, "meta2")).toThrowError();
});
});
});
}