120 lines
4.0 KiB
TypeScript
120 lines
4.0 KiB
TypeScript
import {
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ddescribe,
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describe,
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it,
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iit,
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xit,
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expect,
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beforeEach,
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afterEach,
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inject,
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} from '@angular/core/testing/testing_internal';
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import {} from '@angular/core/testing/testing_internal';
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import {browserDetection} from '@angular/platform-browser/testing';
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import {TestComponentBuilder, ComponentFixture} from '@angular/compiler/testing';
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import {AsyncTestCompleter} from '@angular/core/testing/testing_internal';
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import {Component} from '@angular/core';
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import {SlicePipe} from '@angular/common';
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export function main() {
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describe("SlicePipe", () => {
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var list: number[];
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var str;
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var pipe;
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beforeEach(() => {
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list = [1, 2, 3, 4, 5];
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str = 'tuvwxyz';
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pipe = new SlicePipe();
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});
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describe("supports", () => {
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it("should support strings", () => { expect(pipe.supports(str)).toBe(true); });
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it("should support lists", () => { expect(pipe.supports(list)).toBe(true); });
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it("should not support other objects", () => {
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expect(pipe.supports(new Object())).toBe(false);
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expect(pipe.supports(null)).toBe(false);
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});
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});
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describe("transform", () => {
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it('should return null if the value is null',
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() => { expect(pipe.transform(null, [4, 2])).toBe(null); });
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it('should return all items after START index when START is positive and END is omitted',
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() => {
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expect(pipe.transform(list, 3)).toEqual([4, 5]);
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expect(pipe.transform(str, 3)).toEqual('wxyz');
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});
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it('should return last START items when START is negative and END is omitted', () => {
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expect(pipe.transform(list, -3)).toEqual([3, 4, 5]);
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expect(pipe.transform(str, -3)).toEqual('xyz');
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});
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it('should return all items between START and END index when START and END are positive',
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() => {
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expect(pipe.transform(list, 1, 3)).toEqual([2, 3]);
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expect(pipe.transform(str, 1, 3)).toEqual('uv');
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});
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it('should return all items between START and END from the end when START and END are negative',
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() => {
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expect(pipe.transform(list, -4, -2)).toEqual([2, 3]);
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expect(pipe.transform(str, -4, -2)).toEqual('wx');
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});
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it('should return an empty value if START is greater than END', () => {
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expect(pipe.transform(list, 4, 2)).toEqual([]);
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expect(pipe.transform(str, 4, 2)).toEqual('');
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});
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it('should return an empty value if START greater than input length', () => {
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expect(pipe.transform(list, 99)).toEqual([]);
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expect(pipe.transform(str, 99)).toEqual('');
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});
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// Makes Edge to disconnect when running the full unit test campaign
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// TODO: remove when issue is solved: https://github.com/angular/angular/issues/4756
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if (!browserDetection.isEdge) {
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it('should return entire input if START is negative and greater than input length', () => {
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expect(pipe.transform(list, -99)).toEqual([1, 2, 3, 4, 5]);
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expect(pipe.transform(str, -99)).toEqual('tuvwxyz');
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});
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it('should not modify the input list', () => {
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expect(pipe.transform(list, 2)).toEqual([3, 4, 5]);
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expect(list).toEqual([1, 2, 3, 4, 5]);
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});
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}
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});
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describe('integration', () => {
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it('should work with mutable arrays',
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inject([TestComponentBuilder, AsyncTestCompleter], (tcb: TestComponentBuilder, async) => {
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tcb.createAsync(TestComp).then((fixture) => {
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let mutable: number[] = [1, 2];
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fixture.debugElement.componentInstance.data = mutable;
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fixture.detectChanges();
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expect(fixture.debugElement.nativeElement).toHaveText('2');
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mutable.push(3);
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fixture.detectChanges();
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expect(fixture.debugElement.nativeElement).toHaveText('2,3');
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async.done();
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});
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}));
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});
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});
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}
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@Component({selector: 'test-comp', template: '{{(data | slice:1).join(",") }}', pipes: [SlicePipe]})
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class TestComp {
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data: any;
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}
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