我需要在Jasmine中做一些期待,比如：
let realValue = callSomeMethod();
let expected = [{
total: 33,saved: 1.65
}];
expect(realValue).toEqual(expected);
但它失败了,消息是：
Expect [ Object({ total: 33,saved: 1.6500000000000001 })]
to equal [Object({ total: 33,saved: 1.65 })].
我怎样才能做正确的检查？
解决方法
toBeCloseto匹配器用于精确数学比较：
expect(1.6500000000000001).toBeCloseto(1.65,2); expect(1.6500000000000001).toBeCloseto(1.65,15); expect(1.6500000000000001).not.toBeCloseto(1.65,16);
来源：Jasmine matchers