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class RocketsScreenTest { | |
@get:Rule | |
val composeTestRule = createAndroidComposeRule<ComponentActivity>() | |
private val testRockets = generateTestRocketsFromPresentation() | |
private lateinit var rocketContentDescription: String | |
private lateinit var errorRefreshingMessage: String | |
(...) | |
@Before | |
fun setUp() { | |
with(composeTestRule.activity) { | |
rocketContentDescription = getString(R.string.rocket_image_content_description) | |
errorRefreshingMessage = getString(R.string.rockets_error_refreshing) | |
(...) | |
} | |
} | |
@Test | |
fun rocketsScreen_whenContentAvailableAndErrorOccurs_shouldKeepContent() { | |
setUpComposable( | |
RocketsUiState( | |
rockets = testRockets, | |
isError = true | |
) | |
) | |
composeTestRule | |
.onAllNodesWithContentDescription(rocketContentDescription) | |
.assertCountEquals(testRockets.size) | |
} | |
@Test | |
fun rocketsScreen_whenContentAvailableAndErrorOccurs_shouldShowErrorSnackbar() { | |
setUpComposable( | |
RocketsUiState( | |
rockets = testRockets, | |
isError = true | |
) | |
) | |
composeTestRule | |
.onNodeWithText(errorRefreshingMessage) | |
.assertExists() | |
} | |
private fun setUpComposable(rocketsUiState: RocketsUiState) { | |
composeTestRule.setContent { | |
RocketsScreen( | |
uiState = rocketsUiState, | |
(...) | |
) | |
} | |
} | |
} |
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