angular-cn/modules/@angular/common/test/pipes/number_pipe_spec.ts

/**
 * @license
 * Copyright Google Inc. All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */

import {CurrencyPipe, DecimalPipe, PercentPipe} from '@angular/common';
import {afterEach, beforeEach, ddescribe, describe, expect, iit, it, xit} from '@angular/core/testing/testing_internal';
import {browserDetection} from '@angular/platform-browser/testing/browser_util';

export function main() {
  describe('Number pipes', () => {
    // TODO(mlaval): enable tests when Intl API is no longer used, see
    // https://github.com/angular/angular/issues/3333
    // Have to restrict to Chrome as IE uses a different formatting
    if (browserDetection.supportsIntlApi && browserDetection.isChromeDesktop) {
      describe('DecimalPipe', () => {
        var pipe: DecimalPipe;

        beforeEach(() => { pipe = new DecimalPipe('en-US'); });

        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 support strings', () => {
            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();
            expect(() => pipe.transform('123abc')).toThrowError();
          });
        });
      });

      describe('PercentPipe', () => {
        var pipe: PercentPipe;

        beforeEach(() => { pipe = new PercentPipe('en-US'); });

        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: CurrencyPipe;

        beforeEach(() => { pipe = new CurrencyPipe('en-US'); });

        describe('transform', () => {
          it('should return correct value for numbers', () => {
            expect(pipe.transform(123)).toEqual('USD123.00');
            expect(pipe.transform(12, 'EUR', false, '.1')).toEqual('EUR12.0');
            expect(pipe.transform(5.1234, 'USD', false, '.0-3')).toEqual('USD5.123');
          });

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