[TOC] > [完整匹配器接口](https://jestjs.io/docs/en/expect) ## .toBe 值 匹配 ``` expect(2 + 2).toBe(4); ``` ## .toEqual `toBe`使用`Object.is`來進行精準匹配的測試。 如果您想要檢查對象的值，請使用`toEqual`代替 ``` expect(data).toEqual({one: 1, two: 2}); ``` ## .toBeWithinRange ``` expect(100).toBeWithinRange(90, 110); expect(101).not.toBeWithinRange(0, 100); ``` ## .toMatch ``` expect('team').not.toMatch(/I/); expect('team').not.toMatch(/tea/); ``` ## .toContain 數組總存在某個值 ``` expect([1,2,3]).toContain(2); ``` ## .Exceptions ``` function compileAndroidCode() { throw new Error('you are using the wrong JDK'); } test('compiling android goes as expected', () => { expect(() => compileAndroidCode()).toThrow(); expect(() => compileAndroidCode()).toThrow(Error); // You can also use the exact error message or a regexp expect(() => compileAndroidCode()).toThrow('you are using the wrong JDK'); expect(() => compileAndroidCode()).toThrow(/JDK/); }); ```