This shows the functions that implement the test assertions

LaunchesScreenRobot.kt

fun clickOnLaunchesTab() = launchesTabItem.assertIsDisplayed().performClick()

fun initialElementsShowed() {
    launchesTitle.assertIsDisplayed()
    dialogFilterButton.assertIsDisplayed()
}

fun listItemsShowed(numItemsShowed: Int) = launchesListItems.assertCountEquals(numItemsShowed)

fun advanceTimeBy(timeToAdvance: Long) = composeTestRule.mainClock.advanceTimeBy(timeToAdvance)

fun errorElementsDisplayed() {
    connectionErrorMessage.assertExists().assertIsDisplayed()
    connectionErrorAnimation.assertExists().assertIsDisplayed()
} 

fun noResultsElementsShowed() {
    noResultsText.assertExists().assertIsDisplayed()
    listItemsShowed(0)
}