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fix: Resolve WearOS NoClassDefFoundError and add regression tests (#2349)
* fix: Resolve WearOS crash and add regression tests Fixes NoClassDefFoundError by adding org.apache.http.legacy. Adds AppLaunchTest regression test. Updates verify_all.sh with --connected flag. * docs: Document verify_all.sh usage and flags Adds --help, --connected-wear, and --connected-mobile flags to verify_all.sh. Updates README.md with usage instructions. * fix: Add missing copyright header to AppLaunchTest.kt
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‎ApiDemos/project/java-app/build.gradle.kts‎

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@@ -81,6 +81,7 @@ dependencies {
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androidTestImplementation(libs.junit)
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androidTestImplementation(libs.espresso.core)
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androidTestImplementation(libs.truth)
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androidTestImplementation(libs.ext.junit)
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}
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secrets {

‎README.md‎

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@@ -51,6 +51,16 @@ To verify that all samples build and pass tests, run:
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./scripts/verify_all.sh
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```
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To run instrumentation tests on a connected device or emulator, use:
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```bash
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# For Wear OS devices/emulators
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./scripts/verify_all.sh --connected-wear
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# For Mobile (Handheld) devices/emulators
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./scripts/verify_all.sh --connected-mobile
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```
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Alternatively, use the `gradlew build` command to build the project directly or download an APK
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under [releases](https://github.com/googlemaps/android-samples/releases).
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‎WearOS/Wearable/build.gradle.kts‎

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@@ -29,6 +29,7 @@ android {
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targetSdk = libs.versions.targetSdk.get().toInt()
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versionCode = 1
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versionName = libs.versions.versionName.get()
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testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
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}
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buildTypes {
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// This dependency is necessary for ambient mode
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implementation(libs.wear)
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// Android Test Dependencies
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androidTestImplementation(libs.ext.junit)
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androidTestImplementation(libs.espresso.core)
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androidTestImplementation(libs.uiautomator)
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androidTestImplementation(libs.truth)
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androidTestImplementation(libs.junit)
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// If your project does not use a version catalog, you can use the following dependencies instead:
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//
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// compileOnly("com.google.android.wearable:wearable:2.9.0")
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// implementation("com.google.android.support:wearable:2.9.0")
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// implementation("com.google.android.gms:play-services-maps:20.0.0")
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// implementation("androidx.wear:wear:1.3.0")
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// androidTestImplementation("androidx.test.ext:junit:1.1.5")
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// androidTestImplementation("androidx.test.espresso:espresso-core:3.5.1")
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// androidTestImplementation("androidx.test.uiautomator:uiautomator:2.3.0")
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// androidTestImplementation("com.google.truth:truth:1.4.2")
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// androidTestImplementation("junit:junit:4.13.2")
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}
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// [END maps_wear_os_dependencies]
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‎WearOS/Wearable/src/androidTest/java/com/example/wearosmap/AppLaunchTest.kt‎

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/*
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* Copyright 2026 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.example.wearosmap
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import androidx.test.core.app.ActivityScenario
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import androidx.test.ext.junit.runners.AndroidJUnit4
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import androidx.test.filters.LargeTest
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import androidx.test.platform.app.InstrumentationRegistry
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import androidx.test.uiautomator.UiDevice
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import androidx.test.uiautomator.UiSelector
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import com.example.wearosmap.kt.MainActivity
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import com.google.common.truth.Truth.assertThat
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import org.junit.Test
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import org.junit.runner.RunWith
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@RunWith(AndroidJUnit4::class)
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@LargeTest
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class AppLaunchTest {
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@Test
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fun appLaunchesSuccessfully() {
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// Launch the activity
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ActivityScenario.launch(MainActivity::class.java).use { scenario ->
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scenario.onActivity { activity ->
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assertThat(activity).isNotNull()
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}
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}
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}
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@Test
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fun mapContainerIsDisplayed() {
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// Launch the activity
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ActivityScenario.launch(MainActivity::class.java).use {
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val device = UiDevice.getInstance(InstrumentationRegistry.getInstrumentation())
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// Wait for the map container to appear
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val mapContainer = device.findObject(UiSelector().resourceId("com.example.wearos:id/map_container"))
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assertThat(mapContainer.waitForExists(5000)).isTrue()
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}
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}
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@Test
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fun markerTitleIsDisplayed() {
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// Launch the activity
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ActivityScenario.launch(MainActivity::class.java).use {
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val device = UiDevice.getInstance(InstrumentationRegistry.getInstrumentation())
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// Wait for the marker title "Sydney Opera House" to appear
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// Note: This relies on the Google Map rendering the marker and it being visible/accessible.
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// In a real device/emulator, this might need more robust waiting logic or accessibility settings.
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val markerTitle = device.findObject(UiSelector().descriptionContains("Sydney Opera House"))
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// Allow some time for map loading and rendering
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if (!markerTitle.exists()) {
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markerTitle.waitForExists(10000)
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}
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// Verify if found (Bonus check, might flake on some emulators if map doesn't render)
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// We use a softer check here or assertion if we are confident.
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// For now, let's assert it exists if we want to be strict, or just log if we want to be lenient.
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// Given the requirement "Verify Map and Marker presence (Bonus)", we'll try to assert.
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assertThat(markerTitle.exists()).isTrue()
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}
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}
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}

‎WearOS/Wearable/src/main/AndroidManifest.xml‎

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android:name="com.google.android.wearable.standalone"
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android:value="true" />
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<!-- Required for Maps SDK on Wear OS devices -->
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<uses-library android:name="org.apache.http.legacy" android:required="false" />
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<!-- Reference the wearable shared library required to support ambient mode. -->
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<uses-library android:name="com.google.android.wearable" android:required="false" />
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‎scripts/verify_all.sh‎

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":tutorials:kotlin:Polygons"
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)
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# Parse arguments
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RUN_CONNECTED_WEAR=false
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RUN_CONNECTED_MOBILE=false
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print_usage() {
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echo "Usage: $0 [OPTIONS]"
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echo ""
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echo "Verifies all Android modules in the project by running assemble, test, and lint."
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echo ""
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echo "Options:"
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echo " -h, --help Show this help message and exit"
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echo " --connected-wear Run connected instrumentation tests for Wear OS modules"
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echo " --connected-mobile Run connected instrumentation tests for Mobile (Handheld) modules"
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echo " --connected Run ALL connected tests (Wear OS + Mobile) - Warning: Requires multiple emulators"
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echo ""
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}
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for arg in "$@"; do
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case $arg in
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-h|--help)
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print_usage
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exit 0
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;;
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--connected-wear)
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RUN_CONNECTED_WEAR=true
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echo "Running with Connected Wear OS Tests..."
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;;
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--connected-mobile)
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RUN_CONNECTED_MOBILE=true
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echo "Running with Connected Mobile Tests..."
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;;
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--connected)
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RUN_CONNECTED_WEAR=true
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RUN_CONNECTED_MOBILE=true
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echo "Warning: Running ALL connected tests. This requires multiple simultaneous emulators (Wear + Handheld) or may fail."
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;;
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*)
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echo "Unknown option: $arg"
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print_usage
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exit 1
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;;
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esac
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done
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# Function to run verification for a module
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verify_module() {
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local module=$1
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local assembleTask=":assembleDebug"
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local testTask=":testDebugUnitTest"
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local lintTask=":lintDebug"
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local connectedTask=""
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if [[ "$module" == ":snippets:app" ]]; then
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assembleTask=":assembleGmsDebug"
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testTask=":testGmsDebugUnitTest"
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lintTask=":lintGmsDebug"
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fi
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# Run assemble, lint, and test
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if ./gradlew "$module$assembleTask" "$module$testTask" "$module$lintTask"; then
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# Define connected test task if enabled
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if [ "$RUN_CONNECTED_WEAR" = true ] && [[ "$module" == ":WearOS:Wearable" ]]; then
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connectedTask=":connectedDebugAndroidTest"
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elif [ "$RUN_CONNECTED_MOBILE" = true ] && [[ "$module" != ":WearOS:Wearable" ]]; then
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if [[ "$module" == ":snippets:app" ]]; then
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connectedTask=":connectedGmsDebugAndroidTest"
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else
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connectedTask=":connectedDebugAndroidTest"
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fi
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fi
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# Note: If both flags are set, both types run (for their respective modules).
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# Build command
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local cmd="./gradlew $module$assembleTask $module$testTask $module$lintTask"
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if [ -n "$connectedTask" ]; then
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cmd="$cmd $module$connectedTask"
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fi
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# Run assemble, lint, and test (and connected if requested)
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echo "Running: $cmd"
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if $cmd; then
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echo -e "${GREEN}SUCCESS: $module verified.${NC}"
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else
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echo -e "${RED}FAILURE: $module failed verification.${NC}"

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