javascript - 如何测试YUI3的get()方法返回的值？

Question

我想像这样模拟一个对象:

var target = new Y.Mock(),
    eventObject = {};

Y.Mock.expect(target, {
    method: 'get',
    args: ['actionId'],
    returns: 'edit'
});

Y.Mock.expect(target, {
    method: 'get',
    args: ['container'],
    returns: '<div></div>'
});

eventObject.target = target;

但是我得到一个错误:

Argument 0 of get() is incorrect.
Expected: container (string)
Actual: actionId (string)"

我怎样才能避免这种情况？

Answer 1

简要查看 Y.Mock code代码，在我看来你不能用相同的参数在同一个方法上创建两个期望。后者覆盖第一个。

不过没关系，我们可以自嘲一下:

var mockedGet = function (args) {
    if (args === 'container') {
        return '<div></div>';
    } else if (args === 'actionId') {
        return 'edit';
    } else {
        YUITest.Assert.fail('Method get('+args+') should not have been called.');
    }

    // we could also verify call counts etc, using the mock object as 'this'
}
Y.Mock.expect(target, {
    method: 'get',
    args: [YUITest.Mock.Value.String], // accepts only one String
    run: mockedGet // replaces returns
});

Working example .