茉莉花间谍document.execCommand不叫

Question

我这样写测试

describe('execCommand', function () {
    it('should call document.execCommand', function () {
        spyOn(document, 'execCommand').and.callThrough();
        expect(document.execCommand).toHaveBeenCalledWith('foreColor', false, 'red');
        document.execCommand('foreColor', false, 'red');
    });
});

但是它失败了 Expected spy execCommand to have been called with [ 'foreColor', false, 'red' ] but it was never called. 我不知道为什么？

请帮忙。

注意：我运行它使用grunt-contrib-jasmine0.9.2

Answer 1

Jasmine 的 expect 函数是当时的断言，而不是 it 块末尾将运行的断言，切换顺序以查看它的工作：

describe('execCommand', function () {
  it('should call document.execCommand', function () {
    spyOn(document, 'execCommand').and.callThrough();
    document.execCommand('foreColor', false, 'red');
    expect(document.execCommand).toHaveBeenCalledWith('foreColor', false, 'red');
  });
});

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茉莉花间谍document.execCommand不叫

Jasmine spy document.execCommand is not called

node.js

jasmine

gruntjs

grunt-contrib-jasmine