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[pigeon] added android unittests (#327)
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‎packages/pigeon/CONTRIBUTING.md‎

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@@ -72,6 +72,3 @@ This is how `dart:mirrors` gets access to the supplied Pigeon file.
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reached the limitations of using dart:mirrors for parsing the Dart files.
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That package has been deprecated and it doesn't support null-safe annotations.
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We should migrate to using the Dart Analyzer as the front-end parser.
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* Integration tests for Android - Right now we have integration tests for Dart
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and iOS. We should add some for Android. It is limiting the speed at which
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we can bring in external contributor's contributions to Android / Java.

‎packages/pigeon/pigeons/android_unittests.dart‎

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// Copyright 2020 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:pigeon/pigeon.dart';
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class SetRequest {
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int? value;
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}
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class NestedRequest {
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String? context;
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SetRequest? request;
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}
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@HostApi()
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abstract class Api {
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void setValue(SetRequest request);
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}
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@HostApi()
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abstract class NestedApi {
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void setValueWithContext(NestedRequest request);
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}

‎packages/pigeon/platform_tests/android_unit_tests/.gitignore‎

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# Miscellaneous
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*.class
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*.log
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*.pyc
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*.swp
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.DS_Store
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.atom/
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.buildlog/
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.history
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.svn/
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# IntelliJ related
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*.iml
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*.ipr
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*.iws
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.idea/
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# The .vscode folder contains launch configuration and tasks you configure in
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# VS Code which you may wish to be included in version control, so this line
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# is commented out by default.
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#.vscode/
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# Flutter/Dart/Pub related
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**/doc/api/
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**/ios/Flutter/.last_build_id
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.dart_tool/
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.flutter-plugins
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.flutter-plugins-dependencies
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.packages
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.pub-cache/
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.pub/
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/build/
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# Web related
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lib/generated_plugin_registrant.dart
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# Symbolication related
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app.*.symbols
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# Obfuscation related
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app.*.map.json
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# Android Studio will place build artifacts here
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/android/app/debug
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/android/app/profile
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/android/app/release

‎packages/pigeon/platform_tests/android_unit_tests/.metadata‎

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# This file tracks properties of this Flutter project.
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# Used by Flutter tool to assess capabilities and perform upgrades etc.
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#
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# This file should be version controlled and should not be manually edited.
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version:
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revision: 891511d58f6550ce9e9b03b8d7c6a602caa97488
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channel: master
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project_type: app

‎packages/pigeon/platform_tests/android_unit_tests/README.md‎

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# android_unit_tests
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Unit-tests for Pigeon generated Java code. See [../../run_tests.sh](../../run_tests.sh).

‎packages/pigeon/platform_tests/android_unit_tests/android/.gitignore‎

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gradle-wrapper.jar
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/.gradle
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/captures/
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/gradlew
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/gradlew.bat
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/local.properties
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GeneratedPluginRegistrant.java
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# Remember to never publicly share your keystore.
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# See https://flutter.dev/docs/deployment/android#reference-the-keystore-from-the-app
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key.properties

‎packages/pigeon/platform_tests/android_unit_tests/android/app/build.gradle‎

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def localProperties = new Properties()
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def localPropertiesFile = rootProject.file('local.properties')
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if (localPropertiesFile.exists()) {
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localPropertiesFile.withReader('UTF-8') { reader ->
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localProperties.load(reader)
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}
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}
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def flutterRoot = localProperties.getProperty('flutter.sdk')
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if (flutterRoot == null) {
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throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
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}
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def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
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if (flutterVersionCode == null) {
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flutterVersionCode = '1'
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}
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def flutterVersionName = localProperties.getProperty('flutter.versionName')
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if (flutterVersionName == null) {
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flutterVersionName = '1.0'
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}
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apply plugin: 'com.android.application'
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apply plugin: 'kotlin-android'
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apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
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android {
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compileSdkVersion 30
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sourceSets {
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main.java.srcDirs += 'src/main/kotlin'
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}
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defaultConfig {
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// TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
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applicationId "com.example.android_unit_tests"
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minSdkVersion 16
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targetSdkVersion 30
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versionCode flutterVersionCode.toInteger()
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versionName flutterVersionName
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}
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buildTypes {
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release {
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// TODO: Add your own signing config for the release build.
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// Signing with the debug keys for now, so `flutter run --release` works.
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signingConfig signingConfigs.debug
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}
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}
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testOptions {
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unitTests.returnDefaultValues = true
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}
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}
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flutter {
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source '../..'
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}
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dependencies {
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implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
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testImplementation 'junit:junit:4.+'
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testImplementation "org.mockito:mockito-core:3.+"
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}

‎packages/pigeon/platform_tests/android_unit_tests/android/app/src/debug/AndroidManifest.xml‎

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<manifest xmlns:android="http://schemas.android.com/apk/res/android"
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package="com.example.android_unit_tests">
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<!-- Flutter needs it to communicate with the running application
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to allow setting breakpoints, to provide hot reload, etc.
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-->
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<uses-permission android:name="android.permission.INTERNET"/>
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</manifest>

‎packages/pigeon/platform_tests/android_unit_tests/android/app/src/main/AndroidManifest.xml‎

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<manifest xmlns:android="http://schemas.android.com/apk/res/android"
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package="com.example.android_unit_tests">
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<application
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android:label="android_unit_tests"
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android:icon="@mipmap/ic_launcher">
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<activity
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android:name=".MainActivity"
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android:launchMode="singleTop"
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android:theme="@style/LaunchTheme"
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android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
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android:hardwareAccelerated="true"
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android:windowSoftInputMode="adjustResize">
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<!-- Specifies an Android theme to apply to this Activity as soon as
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the Android process has started. This theme is visible to the user
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while the Flutter UI initializes. After that, this theme continues
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to determine the Window background behind the Flutter UI. -->
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<meta-data
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android:name="io.flutter.embedding.android.NormalTheme"
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android:resource="@style/NormalTheme"
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/>
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<!-- Displays an Android View that continues showing the launch screen
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Drawable until Flutter paints its first frame, then this splash
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screen fades out. A splash screen is useful to avoid any visual
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gap between the end of Android's launch screen and the painting of
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Flutter's first frame. -->
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<meta-data
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android:name="io.flutter.embedding.android.SplashScreenDrawable"
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android:resource="@drawable/launch_background"
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/>
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<intent-filter>
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<action android:name="android.intent.action.MAIN"/>
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<category android:name="android.intent.category.LAUNCHER"/>
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</intent-filter>
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</activity>
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<!-- Don't delete the meta-data below.
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This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
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<meta-data
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android:name="flutterEmbedding"
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android:value="2" />
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</application>
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</manifest>

‎packages/pigeon/platform_tests/android_unit_tests/android/app/src/main/java/com/example/android_unit_tests/Pigeon.java‎

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// Autogenerated from Pigeon (v0.2.0), do not edit directly.
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// See also: https://pub.dev/packages/pigeon
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package com.example.android_unit_tests;
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import io.flutter.plugin.common.BasicMessageChannel;
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import io.flutter.plugin.common.BinaryMessenger;
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import io.flutter.plugin.common.StandardMessageCodec;
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import java.util.HashMap;
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import java.util.Map;
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/** Generated class from Pigeon. */
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@SuppressWarnings({"unused", "unchecked", "CodeBlock2Expr", "RedundantSuppression"})
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public class Pigeon {
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/** Generated class from Pigeon that represents data sent in messages. */
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public static class SetRequest {
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private Long value;
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public Long getValue() {
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return value;
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}
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public void setValue(Long setterArg) {
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this.value = setterArg;
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}
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Map<String, Object> toMap() {
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Map<String, Object> toMapResult = new HashMap<>();
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toMapResult.put("value", value);
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return toMapResult;
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}
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static SetRequest fromMap(Map<String, Object> map) {
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SetRequest fromMapResult = new SetRequest();
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Object value = map.get("value");
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fromMapResult.value =
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(value == null) ? null : ((value instanceof Integer) ? (Integer) value : (Long) value);
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return fromMapResult;
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}
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}
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/** Generated interface from Pigeon that represents a handler of messages from Flutter. */
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public interface Api {
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void setValue(SetRequest arg);
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/** Sets up an instance of `Api` to handle messages through the `binaryMessenger`. */
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static void setup(BinaryMessenger binaryMessenger, Api api) {
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{
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BasicMessageChannel<Object> channel =
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new BasicMessageChannel<>(
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binaryMessenger, "dev.flutter.pigeon.Api.setValue", new StandardMessageCodec());
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if (api != null) {
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channel.setMessageHandler(
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(message, reply) -> {
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Map<String, Object> wrapped = new HashMap<>();
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try {
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@SuppressWarnings("ConstantConditions")
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SetRequest input = SetRequest.fromMap((Map<String, Object>) message);
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api.setValue(input);
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wrapped.put("result", null);
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} catch (Error | RuntimeException exception) {
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wrapped.put("error", wrapError(exception));
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}
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reply.reply(wrapped);
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});
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} else {
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channel.setMessageHandler(null);
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}
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}
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}
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}
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private static Map<String, Object> wrapError(Throwable exception) {
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Map<String, Object> errorMap = new HashMap<>();
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errorMap.put("message", exception.toString());
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errorMap.put("code", exception.getClass().getSimpleName());
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errorMap.put("details", null);
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return errorMap;
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}
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}

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