ProfileViewModelTests.swift

class ProfileViewModelTests: XCTestCase {
    func testDelegateNotifiedWhenProfileDeleted() {
        // given
        let fakeClient = FakeAPIClient()
        let delegate = FakeDelegate()
        let viewModel = ProfileViewModel(apiClient: fakeClient, delegate: delegate)
    
        // when
        viewModel.deleteProfile()
    
        // then
        XCTAssert(delegate.didDeleteUser)
    }
}