it('should returns new function with piped all passed functions', () => {
var spy1 = jasmine.createSpyObj('spy', ['test1', 'test2', 'test3', 'test4']);
spy1.test1.and.callFake((a) => a + 1);
spy1.test2.and.callFake((a) => a + 1);
spy1.test3.and.callFake((a) => a + 1);
spy1.test4.and.callFake((a) => a + 1);
var piped = pipe(spy1.test1, spy1.test2, spy1.test3, spy1.test4);
var result = piped(1, 2, 'foo');
expect(spy1.test1).toHaveBeenCalledWith(1, 2, 'foo');
expect(spy1.test2).toHaveBeenCalledWith(2);
expect(spy1.test3).toHaveBeenCalledWith(3);
expect(spy1.test4).toHaveBeenCalledWith(4);
expect(result).toBe(5);
});
it('should returns new function with piped all passed functions', () => {
const spyObject = {
test1: a => a + 1,
test2: a => a + 1,
test3: a => a + 1,
test4: a => a + 1,
};
const spyTest1 = jest.spyOn(spyObject, 'test1');
const spyTest2 = jest.spyOn(spyObject, 'test2');
const spyTest3 = jest.spyOn(spyObject, 'test3');
const spyTest4 = jest.spyOn(spyObject, 'test4');
const piped = pipe(spyTest1, spyTest2, spyTest3, spyTest4);
const result = piped(1, 2, 'foo');
expect(spyTest1).toHaveBeenCalledWith(1, 2, 'foo');
expect(spyTest2).toHaveBeenCalledWith(2);
expect(spyTest3).toHaveBeenCalledWith(3);
expect(spyTest4).toHaveBeenCalledWith(4);
expect(result).toBe(5);
});