instanceof doesn't seem to work with class mocks
Philipp3211 opened this issue · comments
Philipp3211 commented
In our tests we want to mock classes. When mocking them with the createMock
function, the instanceof
operator is not returning true when checking for the to be mocked class:
class Person {
name: string;
}
const myPerson = createMock<Person>();
const isOfType = myPerson instanceof Person; // is false
I'm not sure if this is a bug or not, but it prevents us from using the mock as a direct substitute, because our code depends on the instanceof
operator returning true
.
Workaround is possible by using Object.setPrototypeOf(myPerson, Person.prototype);
.