How to: :thumbsdown: Anti-Pattern Example: Assertion mix UI details and data
```javascript
test("When flagging to show only VIP, should display only VIP members", () => {
  // Arrange
  const allUsers = [{ id: 1, name: "Yoni Goldberg", vip: false }, { id: 2, name: "John Doe", vip: true }];

  // Act
  const { getAllByTestId } = render(
);

  // Assert - Mix UI & data in assertion
  expect(getAllByTestId("user")).toEqual('[
John Doe
]');
});
```