You can always use the .not method, which will be valid if your initial condition is false. It works for every jest test: expect(() ... ... <看更多>

try { await promise; throw new Error(`Jest: test did not throw. ${Math.random()}`) } catch (e) { expect(() => { throw e; }). ... <看更多>

try { await promise; throw new Error(`Jest: test did not throw. ${Math.random()}`) } catch (e) { expect(() => { throw e; }). ... <看更多>

If you mix them up, your tests will still work, but the error messages on ... toBe') + '\n\n' + `Expected value to not be (using ===):\n` + ` ${this.utils. ... <看更多>

Companies all over the world are using Next.js to build performant, scalable applications. In this video, we'll ... ... <看更多>

jest version: 20.0.3. For sync method, it works in this way. test('example', () => { function fn() { throw new Error('some error'); } expect(fn). ... <看更多>