Add UI tests for Emoji Search Android frontends

.github/workflows/build.yaml

@@ -134,6 +134,12 @@ jobs:
 
       - run: ./gradlew -p samples/emoji-search build
 
+      - uses: reactivecircus/android-emulator-runner@v2
+        with:
+          api-level: 29
+          emulator-boot-timeout: 20000
+          script: ./gradlew -p samples/emoji-search connectedCheck
+
       - name: Build Emoji Search iOS (UIKit)
         run: xcodebuild -project samples/emoji-search/ios-uikit/EmojiSearchApp.xcodeproj -scheme EmojiSearchApp -destination 'platform=iOS Simulator,name=iPhone 12,OS=latest'
 

samples/counter/android-composeui/build.gradle

@@ -29,6 +29,7 @@ android {
   }
 
   buildFeatures {
+    // Needed to pass application ID to UIAutomator tests.
     buildConfig = true
   }
 }

samples/counter/android-views/build.gradle

@@ -24,6 +24,7 @@ android {
   }
 
   buildFeatures {
+    // Needed to pass application ID to UIAutomator tests.
     buildConfig = true
   }
 }

samples/emoji-search/android-composeui/build.gradle

@@ -8,8 +8,14 @@ redwoodBuild {
 android {
   namespace 'com.example.redwood.emojisearch.android.composeui'
 
+  defaultConfig {
+    testInstrumentationRunner 'androidx.test.runner.AndroidJUnitRunner'
+  }
+
   buildFeatures {
     compose = true
+    // Needed to pass application ID to UIAutomator tests.
+    buildConfig = true
   }
 }
 
@@ -33,4 +39,7 @@ dependencies {
   implementation projects.redwoodTreehouseHostComposeui
   implementation projects.redwoodWidgetCompose
   implementation libs.okio.assetfilesystem
+
+  androidTestImplementation libs.androidx.test.runner
+  androidTestImplementation projects.samples.emojiSearch.androidTests
 }

samples/emoji-search/android-composeui/src/androidTest/kotlin/com/example/redwood/emojisearch/android/composeui/EmojiSearchUiTest.kt

@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2023 Square, Inc.
+ *
+ * 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 com.example.redwood.emojisearch.android.composeui
+
+import com.example.redwood.emojisearch.android.composeui.BuildConfig.APPLICATION_ID
+import com.example.redwood.emojisearch.android.tests.AbstractEmojiSearchUiTest
+
+class EmojiSearchUiTest : AbstractEmojiSearchUiTest(APPLICATION_ID)

samples/emoji-search/android-tests/build.gradle

@@ -0,0 +1,12 @@
+apply plugin: 'com.android.library'
+apply plugin: 'org.jetbrains.kotlin.android'
+
+dependencies {
+  implementation(libs.junit)
+  implementation(libs.androidx.test.core)
+  implementation(libs.androidx.test.uiautomator)
+}
+
+android {
+  namespace 'com.example.redwood.emojisearch.android.tests'
+}

samples/emoji-search/android-tests/src/main/kotlin/com/example/redwood/emojisearch/android/tests/AbstractEmojiSearchUiTest.kt

@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2023 Square, Inc.
+ *
+ * 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 com.example.redwood.emojisearch.android.tests
+
+import android.content.Context
+import android.content.Intent.FLAG_ACTIVITY_CLEAR_TASK
+import androidx.test.core.app.ApplicationProvider
+import androidx.test.platform.app.InstrumentationRegistry
+import androidx.test.uiautomator.By
+import androidx.test.uiautomator.By.pkg
+import androidx.test.uiautomator.UiDevice
+import androidx.test.uiautomator.UiSelector
+import androidx.test.uiautomator.Until
+import kotlin.time.Duration
+import kotlin.time.Duration.Companion.seconds
+import org.junit.Before
+import org.junit.Test
+
+abstract class AbstractEmojiSearchUiTest(private val appPackage: String) {
+  private val device = UiDevice.getInstance(InstrumentationRegistry.getInstrumentation())!!
+  private val search get() = device.findObject(By.clazz("android.widget.EditText"))!!
+
+  @Before fun before() {
+    val context = ApplicationProvider.getApplicationContext<Context>()
+    val intent = context.packageManager.getLaunchIntentForPackage(appPackage)!!.apply {
+      addFlags(FLAG_ACTIVITY_CLEAR_TASK)
+    }
+    context.startActivity(intent)
+    device.wait(Until.hasObject(pkg(appPackage).depth(0)), 5_000)
+  }
+
+  @Test fun searchTrees() {
+    awaitText("0. +1")
+    search.text = "tree"
+    awaitText("301. christmas_tree")
+    search.clear()
+    awaitText("0. +1")
+  }
+
+  private fun awaitText(value: String, duration: Duration = 4.seconds) {
+    val text = device.findObject(UiSelector().text(value))
+    if (!text.waitForExists(duration.inWholeMilliseconds)) {
+      throw AssertionError("Waited $duration for \"$value\" but never appeared")
+    }
+  }
+}

samples/emoji-search/android-views/build.gradle

@@ -6,7 +6,16 @@ redwoodBuild {
 }
 
 android {
-  namespace "com.example.redwood.emojisearch.android.views"
+  namespace 'com.example.redwood.emojisearch.android.views'
+
+  defaultConfig {
+    testInstrumentationRunner 'androidx.test.runner.AndroidJUnitRunner'
+  }
+
+  buildFeatures {
+    // Needed to pass application ID to UIAutomator tests.
+    buildConfig = true
+  }
 }
 
 dependencies {
@@ -23,4 +32,7 @@ dependencies {
   implementation projects.redwoodTreehouse
   implementation projects.redwoodTreehouseHost
   implementation libs.okio.assetfilesystem
+
+  androidTestImplementation libs.androidx.test.runner
+  androidTestImplementation projects.samples.emojiSearch.androidTests
 }

samples/emoji-search/android-views/src/androidTest/kotlin/com/example/redwood/emojisearch/android/views/EmojiSearchUiTest.kt

@@ -0,0 +1,23 @@
+/*
+ * Copyright (C) 2023 Square, Inc.
+ *
+ * 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 com.example.redwood.emojisearch.android.views
+
+import com.example.redwood.emojisearch.android.tests.AbstractEmojiSearchUiTest
+import com.example.redwood.emojisearch.android.views.BuildConfig.APPLICATION_ID
+import org.junit.Ignore
+
+@Ignore("https://github.com/cashapp/redwood/issues/1696")
+class EmojiSearchUiTest : AbstractEmojiSearchUiTest(APPLICATION_ID)

settings.gradle

@@ -114,6 +114,7 @@ if (!hasProperty('redwoodNoApps')) {
   include ':samples:counter:shared-composeui'
 
   include ':samples:emoji-search:android-composeui'
+  include ':samples:emoji-search:android-tests'
   include ':samples:emoji-search:android-views'
   include ':samples:emoji-search:browser'
   include ':samples:emoji-search:ios-shared'