Add UI test on JoinRoomView

features/joinroom/impl/build.gradle.kts

@@ -23,6 +23,11 @@ plugins {
 
 android {
     namespace = "io.element.android.features.joinroom.impl"
+    testOptions {
+        unitTests {
+            isIncludeAndroidResources = true
+        }
+    }
 }
 
 anvil {
@@ -46,10 +51,13 @@ dependencies {
     testImplementation(libs.test.junit)
     testImplementation(libs.coroutines.test)
     testImplementation(libs.molecule.runtime)
+    testImplementation(libs.test.robolectric)
     testImplementation(libs.test.truth)
     testImplementation(libs.test.turbine)
     testImplementation(projects.libraries.matrix.test)
     testImplementation(projects.tests.testutils)
+    testImplementation(libs.androidx.compose.ui.test.junit)
+    testReleaseImplementation(libs.androidx.compose.ui.test.manifest)
 
     ksp(libs.showkase.processor)
 }

features/joinroom/impl/src/test/kotlin/io/element/android/features/joinroom/impl/JoinRoomViewTest.kt

@@ -0,0 +1,129 @@
+/*
+ * Copyright (c) 2024 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.element.android.features.joinroom.impl
+
+import androidx.activity.ComponentActivity
+import androidx.compose.ui.test.junit4.AndroidComposeTestRule
+import androidx.compose.ui.test.junit4.createAndroidComposeRule
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import io.element.android.libraries.ui.strings.CommonStrings
+import io.element.android.tests.testutils.EnsureNeverCalled
+import io.element.android.tests.testutils.EventsRecorder
+import io.element.android.tests.testutils.clickOn
+import io.element.android.tests.testutils.ensureCalledOnce
+import io.element.android.tests.testutils.pressBack
+import org.junit.Rule
+import org.junit.Test
+import org.junit.rules.TestRule
+import org.junit.runner.RunWith
+
+@RunWith(AndroidJUnit4::class)
+class JoinRoomViewTest {
+    @get:Rule val rule = createAndroidComposeRule<ComponentActivity>()
+
+    @Test
+    fun `clicking on back invoke the expected callback`() {
+        val eventsRecorder = EventsRecorder<JoinRoomEvents>(expectEvents = false)
+        ensureCalledOnce {
+            rule.setJoinRoomView(
+                aJoinRoomState(
+                    eventSink = eventsRecorder,
+                ),
+                onBackPressed = it
+            )
+            rule.pressBack()
+        }
+    }
+
+    @Test
+    fun `clicking on Join room on CanJoin room emits the expected Event`() {
+        val eventsRecorder = EventsRecorder<JoinRoomEvents>()
+        rule.setJoinRoomView(
+            aJoinRoomState(
+                contentState = aLoadedContentState(joinAuthorisationStatus = JoinAuthorisationStatus.CanJoin),
+                eventSink = eventsRecorder,
+            ),
+        )
+        rule.clickOn(R.string.screen_join_room_join_action)
+        eventsRecorder.assertSingle(JoinRoomEvents.JoinRoom)
+    }
+
+    @Test
+    fun `clicking on Knock room on CanKnock room emits the expected Event`() {
+        val eventsRecorder = EventsRecorder<JoinRoomEvents>()
+        rule.setJoinRoomView(
+            aJoinRoomState(
+                contentState = aLoadedContentState(joinAuthorisationStatus = JoinAuthorisationStatus.CanKnock),
+                eventSink = eventsRecorder,
+            ),
+        )
+        rule.clickOn(R.string.screen_join_room_knock_action)
+        eventsRecorder.assertSingle(JoinRoomEvents.JoinRoom)
+    }
+
+    @Test
+    fun `clicking on Accept invitationon IsInvited room emits the expected Event`() {
+        val eventsRecorder = EventsRecorder<JoinRoomEvents>()
+        rule.setJoinRoomView(
+            aJoinRoomState(
+                contentState = aLoadedContentState(joinAuthorisationStatus = JoinAuthorisationStatus.IsInvited),
+                eventSink = eventsRecorder,
+            ),
+        )
+        rule.clickOn(CommonStrings.action_accept)
+        eventsRecorder.assertSingle(JoinRoomEvents.AcceptInvite)
+    }
+
+    @Test
+    fun `clicking on Decline invitation on IsInvited room emits the expected Event`() {
+        val eventsRecorder = EventsRecorder<JoinRoomEvents>()
+        rule.setJoinRoomView(
+            aJoinRoomState(
+                contentState = aLoadedContentState(joinAuthorisationStatus = JoinAuthorisationStatus.IsInvited),
+                eventSink = eventsRecorder,
+            ),
+        )
+        rule.clickOn(CommonStrings.action_decline)
+        eventsRecorder.assertSingle(JoinRoomEvents.DeclineInvite)
+    }
+
+    @Test
+    fun `clicking on Retry when an error occurs emits the expected Event`() {
+        val eventsRecorder = EventsRecorder<JoinRoomEvents>()
+        rule.setJoinRoomView(
+            aJoinRoomState(
+                contentState = aFailureContentState(),
+                eventSink = eventsRecorder,
+            ),
+        )
+        rule.clickOn(CommonStrings.action_retry)
+        eventsRecorder.assertSingle(JoinRoomEvents.RetryFetchingContent)
+    }
+}
+
+private fun <R : TestRule> AndroidComposeTestRule<R, ComponentActivity>.setJoinRoomView(
+    state: JoinRoomState,
+    onBackPressed: () -> Unit = EnsureNeverCalled(),
+) {
+    setContent {
+        JoinRoomView(
+            state = state,
+            onBackPressed = onBackPressed,
+        )
+    }
+}
+