ui_test_case_3.kt

@Test
fun withInput_as_1_onButtonClick_displayOnTop() {
    // mimic the user inputting the text
    composeTestRule.onNodeWithTag("Input").performTextInput("1")
    // mimic if the user clicked on the button
    composeTestRule.onNodeWithText("Copy").performClick()
    // mimic if the user is shown the desired text on UI
    composeTestRule.onNodeWithTag("Counter Display").assertTextContains("Counter = 1")
}