import { ddescribe, describe, it, iit, xit, expect, beforeEach, afterEach } from '@angular/core/testing/testing_internal'; import {LowerCasePipe} from '@angular/common'; export function main() { describe("LowerCasePipe", () => { var upper; var lower; var pipe; beforeEach(() => { lower = 'something'; upper = 'SOMETHING'; pipe = new LowerCasePipe(); }); describe("transform", () => { it("should return lowercase", () => { var val = pipe.transform(upper); expect(val).toEqual(lower); }); it("should lowercase when there is a new value", () => { var val = pipe.transform(upper); expect(val).toEqual(lower); var val2 = pipe.transform('WAT'); expect(val2).toEqual('wat'); }); it("should not support other objects", () => { expect(() => pipe.transform(new Object())).toThrowError(); }); }); }); }