WebbMatchers like .toBe and .toEqual are confusing because while they seem similar, they operate quite differently. When a test fails, we want it to fail because something in our code is wrong. It is both frustrating and unproductive to have a … Webb9 dec. 2024 · ==, === 로는 성공하지만 toEqual, toBe 는 실패한다. jest의 Using Matchers 문서를 보면 이유를 알 수 있다. toBe uses Object.is to test exact equality. If you want to check the value of an object, use toEqual instead: toEqual recursively checks every field of an object or array. jest의 toEqual, toBe는 Object.is 를 사용하니까 테스트가 실패한다. jest …
【もりけん塾】Jestハンズオン勉強会 さえブログ
Webb29 apr. 2024 · This is reflected by several equality assertion methods in Jest: toBe, toEqual and toStrictEqual. toBe compares the referential identity of values, while toEqual does a … Webb17 mars 2024 · ToBe와 ToEqual 사용해보기. 테스트하려는 코드. const hi = { add : (num1, num2) => num1 * num2, makePerson: (name, age) => ( {name, age}) } module .exports = … kern county development services
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WebbExpect. テストを作成するときは、多くの場合、値が特定の条件を満たすことを確認する必要があります。 expect を使用すると、さまざまなものを検証できるいくつかの「 … Webbclass Mathers { constructor (protected readonly expressionVal: unknown) {} toBe {} toEqual {} } const expect = (expressionVal: unknown) => { return new Mathers (expressionVal); }; 复制代码 对于toBe方法, 使用Object.is()来判断相等, 如果相等则控制台不打印信息, 不相等则控制台打印预期值和收到值 Webb12 jan. 2024 · 比较原始类型时,toEqual()和toBe()将产生相同的结果.比较对象时,toBe()是一个更严格的比较,如果它不是内存中完全相同的对象,则该对象将返回false.因此,除 … kern county dept of public works