angular-cn/packages/common/test/pipes/number_pipe_spec.ts

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/**
* @license
* Copyright Google LLC 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 localeAr from '@angular/common/locales/ar';
import localeDa from '@angular/common/locales/da';
import localeDeAt from '@angular/common/locales/de-AT';
import localeEn from '@angular/common/locales/en';
import localeEsUS from '@angular/common/locales/es-US';
import localeFr from '@angular/common/locales/fr';
import {ɵregisterLocaleData, ɵunregisterLocaleData} from '@angular/core';
{
describe('Number pipes', () => {
beforeAll(() => {
ɵregisterLocaleData(localeEn);
ɵregisterLocaleData(localeEsUS);
ɵregisterLocaleData(localeFr);
ɵregisterLocaleData(localeAr);
ɵregisterLocaleData(localeDeAt);
ɵregisterLocaleData(localeDa);
});
afterAll(() => ɵunregisterLocaleData());
describe('DecimalPipe', () => {
describe('transform', () => {
let pipe: DecimalPipe;
beforeEach(() => {
pipe = new DecimalPipe('en-US');
});
it('should return correct value for numbers', () => {
expect(pipe.transform(12345)).toEqual('12,345');
expect(pipe.transform(1.123456, '3.4-5')).toEqual('001.12346');
});
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 return null for NaN', () => {
expect(pipe.transform(Number.NaN)).toEqual(null);
});
it('should return null for null', () => {
expect(pipe.transform(null)).toEqual(null);
});
it('should return null for undefined', () => {
expect(pipe.transform(undefined)).toEqual(null);
});
it('should not support other objects', () => {
expect(() => pipe.transform({} as any))
.toThrowError(
`InvalidPipeArgument: '[object Object] is not a number' for pipe 'DecimalPipe'`);
expect(() => pipe.transform('123abc'))
.toThrowError(`InvalidPipeArgument: '123abc is not a number' for pipe 'DecimalPipe'`);
});
});
describe('transform with custom locales', () => {
it('should return the correct format for es-US', () => {
const pipe = new DecimalPipe('es-US');
expect(pipe.transform('9999999.99', '1.2-2')).toEqual('9,999,999.99');
});
});
});
describe('PercentPipe', () => {
let 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(1.234)).toEqual('123%');
expect(pipe.transform(1.236)).toEqual('124%');
expect(pipe.transform(12.3456, '0.0-10')).toEqual('1,234.56%');
});
it('should return null for NaN', () => {
expect(pipe.transform(Number.NaN)).toEqual(null);
});
it('should return null for null', () => {
expect(pipe.transform(null)).toEqual(null);
});
it('should return null for undefined', () => {
expect(pipe.transform(undefined)).toEqual(null);
});
it('should not support other objects', () => {
expect(() => pipe.transform({} as any))
.toThrowError(
`InvalidPipeArgument: '[object Object] is not a number' for pipe 'PercentPipe'`);
});
});
});
describe('CurrencyPipe', () => {
let pipe: CurrencyPipe;
beforeEach(() => {
pipe = new CurrencyPipe('en-US', 'USD');
});
describe('transform', () => {
it('should return correct value for numbers', () => {
expect(pipe.transform(123)).toEqual('$123.00');
expect(pipe.transform(12, 'EUR', 'code', '.1')).toEqual('EUR12.0');
expect(pipe.transform(5.1234, 'USD', 'code', '.0-3')).toEqual('USD5.123');
expect(pipe.transform(5.1234, 'USD', 'code')).toEqual('USD5.12');
expect(pipe.transform(5.1234, 'USD', '')).toEqual('5.12');
expect(pipe.transform(5.1234, 'USD', 'symbol')).toEqual('$5.12');
expect(pipe.transform(5.1234, 'CAD', 'symbol')).toEqual('CA$5.12');
expect(pipe.transform(5.1234, 'CAD', 'symbol-narrow')).toEqual('$5.12');
expect(pipe.transform(5.1234, 'CAD', 'symbol-narrow', '5.2-2')).toEqual('$00,005.12');
expect(pipe.transform(5.1234, 'CAD', 'symbol-narrow', '5.2-2', 'fr'))
.toEqual('00\u202f005,12 $');
expect(pipe.transform(5, 'USD', 'symbol', '', 'fr')).toEqual('5,00 $US');
expect(pipe.transform(123456789, 'EUR', 'symbol', '', 'de-at'))
.toEqual('€ 123.456.789,00');
expect(pipe.transform(5.1234, 'EUR', '', '', 'de-at')).toEqual('5,12');
expect(pipe.transform(5.1234, 'DKK', '', '', 'da')).toEqual('5,12');
});
it('should use the injected default currency code if none is provided', () => {
const clpPipe = new CurrencyPipe('en-US', 'CLP');
expect(clpPipe.transform(1234)).toEqual('CLP1,234');
});
it('should support any currency code name', () => {
// currency code is unknown, default formatting options will be used
expect(pipe.transform(5.1234, 'unexisting_ISO_code', 'symbol'))
.toEqual('unexisting_ISO_code5.12');
// currency code is USD, the pipe will format based on USD but will display "Custom name"
expect(pipe.transform(5.1234, 'USD', 'Custom name')).toEqual('Custom name5.12');
});
it('should return null for NaN', () => {
expect(pipe.transform(Number.NaN)).toEqual(null);
});
it('should return null for null', () => {
expect(pipe.transform(null)).toEqual(null);
});
it('should return null for undefined', () => {
expect(pipe.transform(undefined)).toEqual(null);
});
it('should not support other objects', () => {
expect(() => pipe.transform({} as any))
.toThrowError(
`InvalidPipeArgument: '[object Object] is not a number' for pipe 'CurrencyPipe'`);
});
it('should warn if you are using the v4 signature', () => {
const warnSpy = spyOn(console, 'warn');
pipe.transform(123, 'USD', true);
expect(warnSpy).toHaveBeenCalledWith(
`Warning: the currency pipe has been changed in Angular v5. The symbolDisplay option (third parameter) is now a string instead of a boolean. The accepted values are "code", "symbol" or "symbol-narrow".`);
});
});
});
});
}