angular-docs-cn/modules/angular2/test/change_detection/pipes/number_pipe_spec.ts

import {ddescribe, describe, it, iit, xit, expect, beforeEach, afterEach} from 'angular2/test_lib';

import {
  DecimalPipe,
  PercentPipe,
  CurrencyPipe
} from 'angular2/src/change_detection/pipes/number_pipe';

export function main() {
  describe("DecimalPipe", () => {
    var pipe;

    beforeEach(() => { pipe = new DecimalPipe(); });

    describe("transform", () => {
      it('should return correct value for numbers', () => {
        expect(pipe.transform(12345, [])).toEqual('12,345');
        expect(pipe.transform(123, ['.2'])).toEqual('123.00');
        expect(pipe.transform(1, ['3.'])).toEqual('001');
        expect(pipe.transform(1.1, ['3.4-5'])).toEqual('001.1000');
        expect(pipe.transform(1.123456, ['3.4-5'])).toEqual('001.12346');
        expect(pipe.transform(1.1234, [])).toEqual('1.123');
      });

      it("should not support other objects",
         () => { expect(() => pipe.transform(new Object(), [])).toThrowError(); });
    });
  });

  describe("PercentPipe", () => {
    var pipe;

    beforeEach(() => { pipe = new PercentPipe(); });

    describe("transform", () => {
      it('should return correct value for numbers', () => {
        expect(pipe.transform(1.23, [])).toEqual('123%');
        expect(pipe.transform(1.2, ['.2'])).toEqual('120.00%');
      });

      it("should not support other objects",
         () => { expect(() => pipe.transform(new Object(), [])).toThrowError(); });
    });
  });

  describe("CurrencyPipe", () => {
    var pipe;

    beforeEach(() => { pipe = new CurrencyPipe(); });

    describe("transform", () => {
      it('should return correct value for numbers', () => {
        expect(pipe.transform(123, [])).toEqual('USD123');
        expect(pipe.transform(12, ['EUR', false, '.2'])).toEqual('EUR12.00');
      });

      it("should not support other objects",
         () => { expect(() => pipe.transform(new Object(), [])).toThrowError(); });
    });
  });
}