Method toHaveLength

packages/expect/src/types.ts:257–257

* Used to check that an object has a `.length` property * and it is set to a certain numeric value.

(expected: number)

   * and it is set to a certain numeric value.
   */
  toHaveLength(expected: number): R;
  /**
   * Use to test the specific value that a mock function returned for the nth call.
   * If the nth call to the mock function threw an error, then this matcher will fail