daf8b7f100
Make typing of DatePipe stricter to catch some misuses (such as passing an Observable or an array) at compile time. BREAKING CHANGE: The signature of the `date` pipe now explicitly states which types are accepted. This should only cause issues in corner cases, as any other values would result in runtime exceptions. PR Close #37447
106 lines
3.7 KiB
TypeScript
106 lines
3.7 KiB
TypeScript
/**
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* @license
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* Copyright Google LLC All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import {DatePipe} from '@angular/common';
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import localeEn from '@angular/common/locales/en';
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import localeEnExtra from '@angular/common/locales/extra/en';
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import {PipeResolver} from '@angular/compiler/src/pipe_resolver';
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import {ɵregisterLocaleData, ɵunregisterLocaleData} from '@angular/core';
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import {JitReflector} from '@angular/platform-browser-dynamic/src/compiler_reflector';
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{
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let date: Date;
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describe('DatePipe', () => {
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const isoStringWithoutTime = '2015-01-01';
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let pipe: DatePipe;
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beforeAll(() => ɵregisterLocaleData(localeEn, localeEnExtra));
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afterAll(() => ɵunregisterLocaleData());
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beforeEach(() => {
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date = new Date(2015, 5, 15, 9, 3, 1, 550);
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pipe = new DatePipe('en-US');
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});
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it('should be marked as pure', () => {
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expect(new PipeResolver(new JitReflector()).resolve(DatePipe)!.pure).toEqual(true);
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});
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describe('supports', () => {
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it('should support date', () => {
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expect(() => pipe.transform(date)).not.toThrow();
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});
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it('should support int', () => {
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expect(() => pipe.transform(123456789)).not.toThrow();
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});
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it('should support numeric strings', () => {
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expect(() => pipe.transform('123456789')).not.toThrow();
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});
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it('should support decimal strings', () => {
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expect(() => pipe.transform('123456789.11')).not.toThrow();
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});
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it('should support ISO string',
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() => expect(() => pipe.transform('2015-06-15T21:43:11Z')).not.toThrow());
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it('should return null for empty string', () => {
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expect(pipe.transform('')).toEqual(null);
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});
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it('should return null for NaN', () => {
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expect(pipe.transform(Number.NaN)).toEqual(null);
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});
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it('should return null for null', () => {
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expect(pipe.transform(null)).toEqual(null);
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});
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it('should return null for undefined', () => {
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expect(pipe.transform(undefined)).toEqual(null);
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});
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it('should support ISO string without time', () => {
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expect(() => pipe.transform(isoStringWithoutTime)).not.toThrow();
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});
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it('should not support other objects', () => {
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expect(() => pipe.transform({} as any)).toThrowError(/InvalidPipeArgument/);
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});
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});
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describe('transform', () => {
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it('should use "mediumDate" as the default format',
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() => expect(pipe.transform('2017-01-11T10:14:39+0000')).toEqual('Jan 11, 2017'));
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it('should return first week if some dates fall in previous year but belong to next year according to ISO 8601 format',
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() => {
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expect(pipe.transform('2019-12-28T00:00:00', 'w')).toEqual('52');
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expect(pipe.transform('2019-12-29T00:00:00', 'w')).toEqual('1');
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expect(pipe.transform('2019-12-30T00:00:00', 'w')).toEqual('1');
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});
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it('should return first week if some dates fall in previous leap year but belong to next year according to ISO 8601 format',
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() => {
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expect(pipe.transform('2012-12-29T00:00:00', 'w')).toEqual('52');
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expect(pipe.transform('2012-12-30T00:00:00', 'w')).toEqual('1');
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expect(pipe.transform('2012-12-31T00:00:00', 'w')).toEqual('1');
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});
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it('should round milliseconds down to the nearest millisecond', () => {
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expect(pipe.transform('2020-08-01T23:59:59.999', 'yyyy-MM-dd')).toEqual('2020-08-01');
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expect(pipe.transform('2020-08-01T23:59:59.9999', 'yyyy-MM-dd, h:mm:ss SSS'))
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.toEqual('2020-08-01, 11:59:59 999');
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});
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});
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});
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}
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