feat: add event-detail tests

gdgindonesia · Aug 25, 2024 · d01e01e · d01e01e
1 parent 82f0d7c
commit d01e01e
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Showing 3 changed files with 65 additions and 3 deletions.
diff --git a/app/src/commonMain/kotlin/id/gdg/app/AppViewModel.kt b/app/src/commonMain/kotlin/id/gdg/app/AppViewModel.kt
@@ -59,7 +59,7 @@ class AppViewModel(
         ChapterUiModel.Default
     )
 
-    private var _eventDetailUiState = MutableStateFlow(EventDetailUiModel())
+    private var _eventDetailUiState = MutableStateFlow(EventDetailUiModel.Empty)
     val eventDetailUiState get() = _eventDetailUiState.asStateFlow()
 
     init {
@@ -135,12 +135,17 @@ class AppViewModel(
     }
 
     private fun fetchEventDetail(eventId: Int) {
+        _eventDetailUiState.update { it.copy(state = UiState.Loading) }
+
         viewModelScope.launch {
             val result = eventDetailUseCase(eventId)
 
             withContext(Dispatchers.Main) {
                 _eventDetailUiState.update {
-                    it.copy(detail = result.getOrNull())
+                    it.copy(
+                        state = result.asUiState(),
+                        detail = result.getOrNull()
+                    )
                 }
             }
         }

diff --git a/app/src/commonMain/kotlin/id/gdg/app/ui/state/EventDetailUiModel.kt b/app/src/commonMain/kotlin/id/gdg/app/ui/state/EventDetailUiModel.kt
@@ -1,7 +1,17 @@
 package id.gdg.app.ui.state
 
+import id.gdg.app.ui.state.common.UiState
 import id.gdg.event.model.EventDetailModel
 
 data class EventDetailUiModel(
+    val state: UiState,
     val detail: EventDetailModel? = null
-)
+) {
+
+    companion object {
+        val Empty get() = EventDetailUiModel(
+            state = UiState.Loading,
+            detail = null
+        )
+    }
+}
diff --git a/app/src/commonTest/kotlin/id/gdg/app/AppViewModelTest.kt b/app/src/commonTest/kotlin/id/gdg/app/AppViewModelTest.kt
@@ -166,4 +166,51 @@ class AppViewModelTest : KoinTest {
             }
         }
     }
+
+    @Test
+    fun `when EventDetail is invoked then the the event details is returned`() {
+        val expectedValue = EventDetailModel(
+            title = "DevFest!"
+        )
+
+        robot.eventDetailUseCase.setData(Result.success(expectedValue))
+
+        viewModel.sendEvent(AppEvent.EventDetail(1))
+
+        runBlocking {
+            viewModel.eventDetailUiState.test {
+                val actualValue = expectMostRecentItem()
+                assertTrue { actualValue.state is UiState.Success }
+                assertTrue { actualValue.detail != null }
+            }
+        }
+    }
+
+    @Test
+    fun `when EventDetail is invoked and invalid event id then an empty event detail is returned`() {
+        robot.eventDetailUseCase.setData(Result.success(null))
+
+        viewModel.sendEvent(AppEvent.EventDetail(-1))
+
+        runBlocking {
+            viewModel.eventDetailUiState.test {
+                val actualValue = expectMostRecentItem()
+                assertTrue { actualValue.state is UiState.Success }
+                assertTrue { actualValue.detail == null }
+            }
+        }
+    }
+
+    @Test
+    fun `when EventDetail is invoked and a network error occurs then a Fail state is returned`() {
+        robot.eventDetailUseCase.setData(Result.failure(Throwable("network error")))
+
+        viewModel.sendEvent(AppEvent.EventDetail(0))
+
+        runBlocking {
+            viewModel.eventDetailUiState.test {
+                assertTrue { expectMostRecentItem().state is UiState.Fail }
+            }
+        }
+    }
 }