Question

我在我的代码中使用过像。

return $provide.decorator('aservice', function($delegate) {
            $delegate.addFn = jasmine.createSpy().andReturn(true);
            return $delegate;
        });

那是什么createSpy呢？我可以将createSpy调用更改为createspyobj调用。

通过使用createSpy，我们可以创建一个函数/方法模拟。 Createspyobj可以做多个函数模拟。我是对的吗？

会有什么不同。

Answer 1

当没有窥探功能时，可以使用

jasmine.createSpy。它将跟踪spyOn之类的调用和参数，但没有实现。

jasmine.createSpyObj用于创建将侦听一个或多个方法的模拟。它返回一个对象，该对象具有每个作为间谍的字符串的属性。

如果要创建模拟，则应使用jasmine.createSpyObj。看看下面的例子。

来自Jasmine文档http://jasmine.github.io/2.0/introduction.html ...

createSpy：

describe("A spy, when created manually", function() {
  var whatAmI;

  beforeEach(function() {
    whatAmI = jasmine.createSpy('whatAmI');

    whatAmI("I", "am", "a", "spy");
  });

  it("is named, which helps in error reporting", function() {
    expect(whatAmI.and.identity()).toEqual('whatAmI');
  });

  it("tracks that the spy was called", function() {
    expect(whatAmI).toHaveBeenCalled();
  });

  it("tracks its number of calls", function() {
    expect(whatAmI.calls.count()).toEqual(1);
  });

  it("tracks all the arguments of its calls", function() {
    expect(whatAmI).toHaveBeenCalledWith("I", "am", "a", "spy");
  });

  it("allows access to the most recent call", function() {
    expect(whatAmI.calls.mostRecent().args[0]).toEqual("I");
  });
});

createSpyObj：

describe("Multiple spies, when created manually", function() {
  var tape;

  beforeEach(function() {
    tape = jasmine.createSpyObj('tape', ['play', 'pause', 'stop', 'rewind']);

    tape.play();
    tape.pause();
    tape.rewind(0);
  });

  it("creates spies for each requested function", function() {
    expect(tape.play).toBeDefined();
    expect(tape.pause).toBeDefined();
    expect(tape.stop).toBeDefined();
    expect(tape.rewind).toBeDefined();
  });

  it("tracks that the spies were called", function() {
    expect(tape.play).toHaveBeenCalled();
    expect(tape.pause).toHaveBeenCalled();
    expect(tape.rewind).toHaveBeenCalled();
    expect(tape.stop).not.toHaveBeenCalled();
  });

  it("tracks all the arguments of its calls", function() {
    expect(tape.rewind).toHaveBeenCalledWith(0);
  });
});

createspy和createspyobj有什么区别

1 个答案: