javascript - Jasmine spyOn 范围函数中断测试

Question

案例

当我在 rootScope 上创建一个 spy 时，期望由于某种原因失败了。查看 plunkr 并尝试将其注释掉并反向查看。

代码

Plunker Example

describe('Testing', function() {
  var rootScope = null

  //you need to indicate your module in a test
  // beforeEach(module('plunker'));

  beforeEach(inject(function($rootScope, $controller) {
    rootScope = $rootScope;

    rootScope.value = false;

    rootScope.testFn = function() {
      rootScope.value = true;
    }
  }));

  it('should modify root scope', function() {
    // Creating this spy makes test fail
    // Comment it outto make it pass
    spyOn(rootScope, 'testFn');
    expect(rootScope.value).toEqual(false);
    rootScope.testFn();
    expect(rootScope.value).toEqual(true);
  });
});

Answer 1

你需要告诉 spy 做一些事情:

spyOn(rootScope, 'testFn').andCallThrough();

我在这里更新了 plnkr:http://plnkr.co/edit/t3ksMtKSI3CEkCtpZ8tI?p=preview

希望这对您有所帮助!