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一步一步介绍如何给项目添加单元测试

JavaScript 89.62% HTML 1.07% Vue 9.31%

unit-test-demo's Issues

expect([1,2,3].indexOf(4)).to.equal(-1)

上面这句断言的意思是，调用[1,2,3].indexOf(4)，结果应该等于 -1。所谓"断言"，就是判断源码的实际执行结果与预期结果是否一致，如果不一致就抛出一个错误。

段落中的这句话结果应该等于 2是否为一个笔误，按照我的理解，此处应为 结果应该等于-1

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