75 lines
2.5 KiB
TypeScript
75 lines
2.5 KiB
TypeScript
|
import {ddescribe, describe, it, iit, xit, expect, beforeEach, afterEach} from 'angular2/test_lib';
|
||
|
|
|
||
|
|
import {SlicePipe} from 'angular2/pipes';
|
||
|
|
|
||
|
|
export function main() {
|
||
|
|
describe("SlicePipe", () => {
|
||
|
|
var list;
|
||
|
|
var str;
|
||
|
|
var pipe;
|
||
|
|
|
||
|
|
beforeEach(() => {
|
||
|
|
list = [1, 2, 3, 4, 5];
|
||
|
|
str = 'tuvwxyz';
|
||
|
|
pipe = new SlicePipe();
|
||
|
|
});
|
||
|
|
|
||
|
|
describe("supports", () => {
|
||
|
|
it("should support strings", () => { expect(pipe.supports(str)).toBe(true); });
|
||
|
|
it("should support lists", () => { expect(pipe.supports(list)).toBe(true); });
|
||
|
|
|
||
|
|
it("should not support other objects", () => {
|
||
|
|
expect(pipe.supports(new Object())).toBe(false);
|
||
|
|
expect(pipe.supports(null)).toBe(false);
|
||
|
|
});
|
||
|
|
});
|
||
|
|
|
||
|
|
describe("transform", () => {
|
||
|
|
|
||
|
|
it('should return all items after START index when START is positive and END is omitted',
|
||
|
|
() => {
|
||
|
|
expect(pipe.transform(list, [3])).toEqual([4, 5]);
|
||
|
|
expect(pipe.transform(str, [3])).toEqual('wxyz');
|
||
|
|
});
|
||
|
|
|
||
|
|
it('should return last START items when START is negative and END is omitted', () => {
|
||
|
|
expect(pipe.transform(list, [-3])).toEqual([3, 4, 5]);
|
||
|
|
expect(pipe.transform(str, [-3])).toEqual('xyz');
|
||
|
|
});
|
||
|
|
|
||
|
|
it('should return all items between START and END index when START and END are positive',
|
||
|
|
() => {
|
||
|
|
expect(pipe.transform(list, [1, 3])).toEqual([2, 3]);
|
||
|
|
expect(pipe.transform(str, [1, 3])).toEqual('uv');
|
||
|
|
});
|
||
|
|
|
||
|
|
it('should return all items between START and END from the end when START and END are negative',
|
||
|
|
() => {
|
||
|
|
expect(pipe.transform(list, [-4, -2])).toEqual([2, 3]);
|
||
|
|
expect(pipe.transform(str, [-4, -2])).toEqual('wx');
|
||
|
|
});
|
||
|
|
|
||
|
|
it('should return an empty value if START is greater than END', () => {
|
||
|
|
expect(pipe.transform(list, [4, 2])).toEqual([]);
|
||
|
|
expect(pipe.transform(str, [4, 2])).toEqual('');
|
||
|
|
});
|
||
|
|
|
||
|
|
it('should return an empty value if START greater than input length', () => {
|
||
|
|
expect(pipe.transform(list, [99])).toEqual([]);
|
||
|
|
expect(pipe.transform(str, [99])).toEqual('');
|
||
|
|
});
|
||
|
|
|
||
|
|
it('should return entire input if START is negative and greater than input length', () => {
|
||
|
|
expect(pipe.transform(list, [-99])).toEqual([1, 2, 3, 4, 5]);
|
||
|
|
expect(pipe.transform(str, [-99])).toEqual('tuvwxyz');
|
||
|
|
});
|
||
|
|
|
||
|
|
it('should not modify the input list', () => {
|
||
|
|
expect(pipe.transform(list, [2])).toEqual([3, 4, 5]);
|
||
|
|
expect(list).toEqual([1, 2, 3, 4, 5]);
|
||
|
|
});
|
||
|
|
|
||
|
|
});
|
||
|
|
|
||
|
|
});
|
||
|
|
}
|