├── testing-ktx ├── .gitignore ├── src │ ├── main │ │ ├── AndroidManifest.xml │ │ └── java │ │ │ └── com │ │ │ └── jraska │ │ │ └── livedata │ │ │ └── TestObserver.kt │ └── test │ │ └── java │ │ └── com │ │ └── jraska │ │ └── livedata │ │ ├── TestObserverTest.kt │ │ └── example │ │ ├── CounterViewModel.kt │ │ ├── ExampleTest.kt │ │ └── ExampleJavaTest.java └── build.gradle ├── testing ├── .gitignore ├── src │ ├── main │ │ ├── AndroidManifest.xml │ │ └── java │ │ │ └── com │ │ │ └── jraska │ │ │ └── livedata │ │ │ ├── TestLifecycle.java │ │ │ └── TestObserver.java │ └── test │ │ └── java │ │ └── com │ │ └── jraska │ │ └── livedata │ │ ├── TestLifecycleTest.kt │ │ └── TestObserverTest.kt └── build.gradle ├── settings.gradle ├── gradle ├── signing-key.gpg └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── img └── livedata-testing.png ├── .editorconfig ├── .github ├── dependabot.yml └── workflows │ ├── build.yml │ └── release.yml ├── gradle.properties ├── .gitignore ├── README.md ├── gradlew.bat ├── gradlew └── LICENSE /testing-ktx/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /testing/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /testing/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | -------------------------------------------------------------------------------- /settings.gradle: -------------------------------------------------------------------------------- 1 | include ':testing', ':testing-ktx' 2 | -------------------------------------------------------------------------------- /testing-ktx/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | -------------------------------------------------------------------------------- /gradle/signing-key.gpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jraska/livedata-testing/HEAD/gradle/signing-key.gpg -------------------------------------------------------------------------------- /img/livedata-testing.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jraska/livedata-testing/HEAD/img/livedata-testing.png -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/jraska/livedata-testing/HEAD/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /.editorconfig: -------------------------------------------------------------------------------- 1 | root = true 2 | 3 | [*] 4 | end_of_line = lf 5 | insert_final_newline = true 6 | charset = utf-8 7 | indent_style = space 8 | indent_size = 2 9 | -------------------------------------------------------------------------------- /.github/dependabot.yml: -------------------------------------------------------------------------------- 1 | version: 2 2 | updates: 3 | - package-ecosystem: gradle 4 | directory: "/" 5 | schedule: 6 | interval: weekly 7 | open-pull-requests-limit: 10 8 | -------------------------------------------------------------------------------- /gradle.properties: -------------------------------------------------------------------------------- 1 | org.gradle.jvmargs=-Xmx2048m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8 2 | org.gradle.parallel=true 3 | org.gradle.daemon=true 4 | 5 | android.useAndroidX=true 6 | -------------------------------------------------------------------------------- /testing-ktx/src/main/java/com/jraska/livedata/TestObserver.kt: -------------------------------------------------------------------------------- 1 | package com.jraska.livedata 2 | 3 | import androidx.lifecycle.LiveData 4 | 5 | fun LiveData.test(): TestObserver { 6 | return TestObserver.test(this) 7 | } 8 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | distributionBase=GRADLE_USER_HOME 2 | distributionPath=wrapper/dists 3 | distributionUrl=https\://services.gradle.org/distributions/gradle-8.3-bin.zip 4 | zipStoreBase=GRADLE_USER_HOME 5 | zipStorePath=wrapper/dists 6 | -------------------------------------------------------------------------------- /.github/workflows/build.yml: -------------------------------------------------------------------------------- 1 | name: Build 2 | on: [push] 3 | env: 4 | JAVA_HOME: /usr/lib/jvm/temurin-17-jdk-amd64 5 | jobs: 6 | build: 7 | runs-on: ubuntu-latest 8 | steps: 9 | - name: Checkout the code 10 | uses: actions/checkout@v3 11 | - name: Run Tests 12 | run: ./gradlew check --stacktrace 13 | -------------------------------------------------------------------------------- /.github/workflows/release.yml: -------------------------------------------------------------------------------- 1 | name: Release To Maven Central 2 | on: 3 | release: 4 | types: [published] 5 | env: 6 | SIGNING_KEY_ID: ${{ secrets.SIGNING_KEY_ID }} 7 | SIGNING_KEY_PASSWORD: ${{ secrets.SIGNING_KEY_PASSWORD }} 8 | SONATYPE_USER: ${{ secrets.SONATYPE_USER }} 9 | SONATYPE_PASSWORD: ${{ secrets.SONATYPE_PASSWORD }} 10 | SONATYPE_STAGING_PROFILE_ID: ${{ secrets.SONATYPE_STAGING_PROFILE_ID }} 11 | JAVA_HOME: /usr/lib/jvm/temurin-17-jdk-amd64 12 | jobs: 13 | publish: 14 | runs-on: ubuntu-latest 15 | steps: 16 | - name: Checkout the code 17 | uses: actions/checkout@v3 18 | - name: Publish Release 19 | run: ./gradlew publishReleasePublicationToSonatypeRepository --stacktrace 20 | -------------------------------------------------------------------------------- /testing-ktx/src/test/java/com/jraska/livedata/TestObserverTest.kt: -------------------------------------------------------------------------------- 1 | package com.jraska.livedata 2 | 3 | import androidx.arch.core.executor.testing.InstantTaskExecutorRule 4 | import androidx.lifecycle.MutableLiveData 5 | import org.assertj.core.api.Assertions.assertThat 6 | import org.junit.Rule 7 | import org.junit.Test 8 | 9 | class TestObserverTest { 10 | @get:Rule val testRule = InstantTaskExecutorRule() 11 | 12 | val mutableLiveData = MutableLiveData() 13 | 14 | @Test 15 | fun whenTestCalled_thenObserving() { 16 | val testObserver = mutableLiveData.test() 17 | 18 | assertThat(mutableLiveData.hasObservers()).isTrue() 19 | testObserver.assertNoValue() 20 | 21 | mutableLiveData.value = 5 22 | mutableLiveData.value = 6 23 | 24 | assertThat(testObserver.valueHistory()).contains(5, 6) 25 | testObserver.assertValue(6) 26 | 27 | mutableLiveData.removeObserver(testObserver) 28 | assertThat(mutableLiveData.hasObservers()).isFalse() 29 | } 30 | } 31 | -------------------------------------------------------------------------------- /testing-ktx/src/test/java/com/jraska/livedata/example/CounterViewModel.kt: -------------------------------------------------------------------------------- 1 | package com.jraska.livedata.example 2 | 3 | import androidx.lifecycle.LiveData 4 | import androidx.lifecycle.MutableLiveData 5 | import java.util.concurrent.atomic.AtomicInteger 6 | 7 | class CounterViewModel { 8 | private val counterData = MutableLiveData() 9 | private val labelData = MutableLiveData() 10 | private val counter = AtomicInteger() 11 | 12 | init { 13 | counterData.value = counter.get() 14 | } 15 | 16 | fun counterLiveData(): LiveData { 17 | return counterData 18 | } 19 | 20 | fun plusButtonClicked() { 21 | counterData.value = counter.incrementAndGet() 22 | } 23 | 24 | fun minusButtonClicked() { 25 | counterData.value = counter.decrementAndGet() 26 | } 27 | 28 | fun counterLabel(): LiveData { 29 | return labelData 30 | } 31 | 32 | fun asyncUpdateLabel(label: String) { 33 | val runnable = Runnable { 34 | Thread.sleep(10) 35 | labelData.postValue(ScreenData(Labels(label))) } 36 | 37 | Thread(runnable).start() 38 | } 39 | 40 | class Labels(val counterLabel: String) 41 | 42 | class ScreenData(val labels: Labels) 43 | } 44 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | # Generated files 2 | bin/ 3 | gen/ 4 | 5 | # Gradle files 6 | .gradle/ 7 | build/ 8 | 9 | # Local configuration file (sdk path, etc) 10 | local.properties 11 | 12 | # Proguard folder generated by Eclipse 13 | proguard/ 14 | 15 | # Log Files 16 | *.log 17 | 18 | # Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio 19 | 20 | *.iml 21 | 22 | # Directory-based project format: 23 | .idea/ 24 | # if you remove the above rule, at least ignore the following: 25 | 26 | # User-specific stuff: 27 | # .idea/workspace.xml 28 | # .idea/tasks.xml 29 | # .idea/dictionaries 30 | 31 | # Sensitive or high-churn files: 32 | # .idea/dataSources.ids 33 | # .idea/dataSources.xml 34 | # .idea/sqlDataSources.xml 35 | # .idea/dynamic.xml 36 | # .idea/uiDesigner.xml 37 | 38 | # Gradle: 39 | # .idea/gradle.xml 40 | # .idea/libraries 41 | 42 | # Mongo Explorer plugin: 43 | # .idea/mongoSettings.xml 44 | 45 | ## File-based project format: 46 | *.ipr 47 | *.iws 48 | 49 | ## Plugin-specific files: 50 | 51 | # IntelliJ 52 | /out/ 53 | 54 | # mpeltonen/sbt-idea plugin 55 | .idea_modules/ 56 | 57 | # JIRA plugin 58 | atlassian-ide-plugin.xml 59 | 60 | # Crashlytics plugin (for Android Studio and IntelliJ) 61 | com_crashlytics_export_strings.xml 62 | crashlytics.properties 63 | -------------------------------------------------------------------------------- /testing/src/test/java/com/jraska/livedata/TestLifecycleTest.kt: -------------------------------------------------------------------------------- 1 | package com.jraska.livedata 2 | 3 | import androidx.arch.core.executor.testing.InstantTaskExecutorRule 4 | import androidx.lifecycle.MutableLiveData 5 | import org.junit.Rule 6 | import org.junit.Test 7 | 8 | class TestLifecycleTest { 9 | @get:Rule val testRule = InstantTaskExecutorRule() 10 | 11 | private val testLiveData = MutableLiveData() 12 | 13 | @Test 14 | fun whenUpdatingLifecycle_thenLiveDataUpdates() { 15 | val testLifecycle = TestLifecycle.initialized() 16 | val testObserver = TestObserver.create() 17 | testLiveData.observe(testLifecycle, testObserver) 18 | 19 | testLiveData.value = 1 20 | testObserver.assertNoValue() 21 | 22 | testLifecycle.create() 23 | testObserver.assertNoValue() 24 | 25 | testLifecycle.start() 26 | testObserver.assertValue(1) 27 | 28 | testLiveData.value = 2 29 | testObserver.assertValue(2) 30 | 31 | testLifecycle.stop() 32 | testLiveData.value = 3 33 | testObserver.assertValue(2) 34 | 35 | testLifecycle.resume() 36 | testObserver.assertValue(3) 37 | } 38 | 39 | @Test 40 | fun whenResumed_thenDeliversImmediately() { 41 | val testLifecycle = TestLifecycle.resumed() 42 | val testObserver = TestObserver.create() 43 | testLiveData.observe(testLifecycle, testObserver) 44 | 45 | testLiveData.value = 1 46 | testObserver.assertValue(1) 47 | } 48 | } 49 | -------------------------------------------------------------------------------- /testing/src/main/java/com/jraska/livedata/TestLifecycle.java: -------------------------------------------------------------------------------- 1 | package com.jraska.livedata; 2 | 3 | import androidx.annotation.NonNull; 4 | import androidx.lifecycle.*; 5 | 6 | public final class TestLifecycle implements LifecycleOwner { 7 | private final LifecycleRegistry registry = new LifecycleRegistry(this); 8 | 9 | private TestLifecycle() { 10 | } 11 | 12 | public TestLifecycle create() { 13 | return handleLifecycleEvent(Lifecycle.Event.ON_CREATE); 14 | } 15 | 16 | public TestLifecycle start() { 17 | return handleLifecycleEvent(Lifecycle.Event.ON_START); 18 | } 19 | 20 | public TestLifecycle resume() { 21 | return handleLifecycleEvent(Lifecycle.Event.ON_RESUME); 22 | } 23 | 24 | public TestLifecycle pause() { 25 | return handleLifecycleEvent(Lifecycle.Event.ON_PAUSE); 26 | } 27 | 28 | public TestLifecycle stop() { 29 | return handleLifecycleEvent(Lifecycle.Event.ON_STOP); 30 | } 31 | 32 | public TestLifecycle destroy() { 33 | return handleLifecycleEvent(Lifecycle.Event.ON_DESTROY); 34 | } 35 | 36 | @NonNull 37 | public Lifecycle.State getCurrentState() { 38 | return registry.getCurrentState(); 39 | } 40 | 41 | private TestLifecycle handleLifecycleEvent(@NonNull Lifecycle.Event event) { 42 | registry.handleLifecycleEvent(event); 43 | return this; 44 | } 45 | 46 | @NonNull 47 | @Override 48 | public Lifecycle getLifecycle() { 49 | return registry; 50 | } 51 | 52 | public static TestLifecycle initialized() { 53 | return new TestLifecycle(); 54 | } 55 | 56 | public static TestLifecycle resumed() { 57 | return initialized().resume(); 58 | } 59 | } 60 | -------------------------------------------------------------------------------- /testing/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.library' 2 | apply plugin: 'kotlin-android' 3 | apply plugin: 'maven-publish' 4 | apply plugin: 'signing' 5 | 6 | version = rootProject.ext.version 7 | group = 'com.jraska.livedata' 8 | 9 | android { 10 | compileSdk 33 11 | defaultConfig { 12 | minSdkVersion 19 13 | targetSdkVersion 33 14 | versionName version 15 | versionCode rootProject.ext.versionCode 16 | } 17 | 18 | compileOptions { 19 | sourceCompatibility 17 20 | targetCompatibility 17 21 | } 22 | 23 | namespace 'com.jraska.livedata' 24 | } 25 | 26 | dependencies { 27 | implementation 'androidx.annotation:annotation:1.9.1' 28 | implementation 'androidx.lifecycle:lifecycle-extensions:2.2.0' 29 | implementation 'androidx.lifecycle:lifecycle-livedata-core:2.8.7' 30 | 31 | testImplementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version" 32 | testImplementation 'junit:junit:4.13.2' 33 | testImplementation 'androidx.arch.core:core-testing:2.2.0' 34 | testImplementation 'org.assertj:assertj-core:3.27.2' 35 | } 36 | 37 | task sourcesJar(type: Jar) { 38 | from android.sourceSets.main.java.srcDirs 39 | archiveClassifier = 'sources' 40 | } 41 | 42 | artifacts { 43 | archives sourcesJar 44 | } 45 | 46 | afterEvaluate { 47 | publishing { 48 | publications { 49 | release(MavenPublication) { 50 | groupId 'com.jraska.livedata' 51 | artifactId 'testing' 52 | version rootProject.ext.version 53 | 54 | from components.release 55 | artifact sourcesJar 56 | 57 | pom { 58 | name = 'com.jraska.livedata' 59 | description = 'LiveData Testing' 60 | url = 'https://github.com/jraska/livedata-testing' 61 | licenses { 62 | license { 63 | name = 'The Apache Software License, Version 2.0' 64 | url = 'http://www.apache.org/licenses/LICENSE-2.0.txt' 65 | } 66 | } 67 | developers { 68 | developer { 69 | id = 'jraska' 70 | name = 'Josef Raska' 71 | } 72 | } 73 | 74 | scm { 75 | connection = 'scm:git:github.com/jraska/livedata-testing.git' 76 | developerConnection = 'scm:git:ssh://github.com/jraska/livedata-testing.git' 77 | url = 'https://github.com/jraska/livedata-testing/tree/main' 78 | } 79 | } 80 | } 81 | } 82 | } 83 | } 84 | 85 | // Adding these directly into signing {} below didn't work :idk 86 | ext["signing.keyId"] = System.getenv("SIGNING_KEY_ID") 87 | ext["signing.password"] = System.getenv("SIGNING_KEY_PASSWORD") 88 | ext["signing.secretKeyRingFile"] = "$rootDir/gradle/signing-key.gpg" 89 | 90 | signing { 91 | sign publishing.publications 92 | } 93 | -------------------------------------------------------------------------------- /testing-ktx/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.library' 2 | apply plugin: 'kotlin-android' 3 | apply plugin: 'maven-publish' 4 | apply plugin: 'signing' 5 | 6 | version = rootProject.ext.version 7 | group = 'com.jraska.livedata' 8 | 9 | android { 10 | compileSdkVersion 33 11 | defaultConfig { 12 | minSdkVersion 19 13 | targetSdkVersion 33 14 | versionName version 15 | versionCode rootProject.ext.versionCode 16 | } 17 | 18 | compileOptions { 19 | sourceCompatibility 17 20 | targetCompatibility 17 21 | } 22 | 23 | namespace 'com.jraska.livedata.ktx' 24 | } 25 | 26 | dependencies { 27 | implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version" 28 | 29 | api project(':testing') 30 | implementation 'androidx.annotation:annotation:1.9.1' 31 | implementation 'androidx.lifecycle:lifecycle-extensions:2.2.0' 32 | implementation 'androidx.lifecycle:lifecycle-livedata-core:2.8.7' 33 | 34 | testImplementation 'junit:junit:4.13.2' 35 | testImplementation 'androidx.arch.core:core-testing:2.2.0' 36 | testImplementation 'org.assertj:assertj-core:3.27.2' 37 | } 38 | 39 | task sourcesJar(type: Jar) { 40 | from android.sourceSets.main.java.srcDirs 41 | archiveClassifier = 'sources' 42 | } 43 | 44 | artifacts { 45 | archives sourcesJar 46 | } 47 | 48 | afterEvaluate { 49 | publishing { 50 | publications { 51 | release(MavenPublication) { 52 | groupId 'com.jraska.livedata' 53 | artifactId 'testing-ktx' 54 | version rootProject.ext.version 55 | 56 | from components.release 57 | artifact sourcesJar 58 | 59 | pom { 60 | name = 'com.jraska.livedata' 61 | description = 'LiveData Testing Ktx' 62 | url = 'https://github.com/jraska/livedata-testing' 63 | licenses { 64 | license { 65 | name = 'The Apache Software License, Version 2.0' 66 | url = 'http://www.apache.org/licenses/LICENSE-2.0.txt' 67 | } 68 | } 69 | developers { 70 | developer { 71 | id = 'jraska' 72 | name = 'Josef Raska' 73 | } 74 | } 75 | 76 | scm { 77 | connection = 'scm:git:github.com/jraska/livedata-testing.git' 78 | developerConnection = 'scm:git:ssh://github.com/jraska/livedata-testing.git' 79 | url = 'https://github.com/jraska/livedata-testing/tree/main' 80 | } 81 | } 82 | } 83 | } 84 | } 85 | } 86 | 87 | // Adding these directly into signing {} below didn't work :idk 88 | ext["signing.keyId"] = System.getenv("SIGNING_KEY_ID") 89 | ext["signing.password"] = System.getenv("SIGNING_KEY_PASSWORD") 90 | ext["signing.secretKeyRingFile"] = "$rootDir/gradle/signing-key.gpg" 91 | 92 | signing { 93 | sign publishing.publications 94 | } 95 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # LiveData Testing 2 | TestObserver to easily test LiveData and make assertions on them. 3 | 4 | [![Maven Central](https://img.shields.io/maven-central/v/com.jraska.livedata/testing-ktx.svg?label=Maven%20Central)](https://search.maven.org/search?q=g:%22com.jraska.livedata%22%20AND%20a:%22testing-ktx%22) 5 | [![License](https://img.shields.io/badge/license-Apache%202.0-green.svg) ](https://github.com/jraska/livedata-testing/blob/master/LICENSE) 6 | [![Android Arsenal]( https://img.shields.io/badge/Android%20Arsenal-LiveData%20Testing-green.svg?style=flat )]( https://android-arsenal.com/details/1/7255 ) 7 | 8 | Read [Medium Article](https://medium.com/@josef.raska/effective-livedata-and-viewmodel-testing-17f25069fcd4) for more info. 9 | 10 | [![Explanatory Diagram](img/livedata-testing.png)](https://medium.com/@josef.raska/effective-livedata-and-viewmodel-testing-17f25069fcd4) 11 | 12 | ## Usage 13 | 14 | Having `LiveData` of counter from 0 to 4: 15 | 16 | Kotlin - see [ExampleTest.kt](https://github.com/jraska/livedata-testing/blob/master/testing-ktx/src/test/java/com/jraska/livedata/example/ExampleTest.kt) 17 | ```java 18 | liveData.test() 19 | .awaitValue() 20 | .assertHasValue() 21 | .assertValue { it > 3 } 22 | .assertValue(4) 23 | .assertHistorySize(5) 24 | .assertNever { it > 4 } 25 | 26 | 27 | // Assertion on structures with a lot of nesting 28 | viewLiveData.map { it.items[0].header.title } 29 | .assertValue("Expected title") 30 | ``` 31 | 32 | Java - see [ExampleTest.java](https://github.com/jraska/livedata-testing/blob/master/testing-ktx/src/test/java/com/jraska/livedata/example/ExampleJavaTest.java) 33 | ```java 34 | TestObserver.test(liveData) 35 | .awaitValue() 36 | .assertHasValue() 37 | .assertValue(value -> value > 3) 38 | .assertValue(4) 39 | .assertHistorySize(5) 40 | .assertNever(value -> value > 4); 41 | ``` 42 | 43 | Don't forget to use `InstantTaskExecutorRule` from `androidx.arch.core:core-testing` to make your LiveData test run properly. 44 | 45 | ## Download 46 | 47 | ##### Kotlin users: 48 | ```groovy 49 | testImplementation 'com.jraska.livedata:testing-ktx:1.3.0' 50 | ``` 51 | 52 | ##### Java users: 53 | ```groovy 54 | testImplementation 'com.jraska.livedata:testing:1.3.0' 55 | ``` 56 | 57 | ## [Philosophy](https://medium.com/@josef.raska/effective-livedata-and-viewmodel-testing-17f25069fcd4) 58 | 59 | This library is created in a belief that to effective and valuable test should be fast to write and model real code usage. 60 | As by Architecture components spec Activity should communicate with its ViewModel only through observing LiveData. 61 | TestObserver in this case simulates the Activity and by testing LiveData, we could test our whole logic except the View where the responsibility belongs to Activity. 62 | Key ideas: 63 | * Test pretends to be an Activity 64 | * No Android framework mocking or Robolectric - just standard fast JUnit tests 65 | * Fluent API inspired by RxJava TestObserver 66 | * Easy to write fast executing tests - possibly TDD 67 | -------------------------------------------------------------------------------- /gradlew.bat: -------------------------------------------------------------------------------- 1 | @rem 2 | @rem Copyright 2015 the original author or authors. 3 | @rem 4 | @rem Licensed under the Apache License, Version 2.0 (the "License"); 5 | @rem you may not use this file except in compliance with the License. 6 | @rem You may obtain a copy of the License at 7 | @rem 8 | @rem https://www.apache.org/licenses/LICENSE-2.0 9 | @rem 10 | @rem Unless required by applicable law or agreed to in writing, software 11 | @rem distributed under the License is distributed on an "AS IS" BASIS, 12 | @rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | @rem See the License for the specific language governing permissions and 14 | @rem limitations under the License. 15 | @rem 16 | 17 | @if "%DEBUG%"=="" @echo off 18 | @rem ########################################################################## 19 | @rem 20 | @rem Gradle startup script for Windows 21 | @rem 22 | @rem ########################################################################## 23 | 24 | @rem Set local scope for the variables with windows NT shell 25 | if "%OS%"=="Windows_NT" setlocal 26 | 27 | set DIRNAME=%~dp0 28 | if "%DIRNAME%"=="" set DIRNAME=. 29 | set APP_BASE_NAME=%~n0 30 | set APP_HOME=%DIRNAME% 31 | 32 | @rem Resolve any "." and ".." in APP_HOME to make it shorter. 33 | for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi 34 | 35 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 36 | set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m" 37 | 38 | @rem Find java.exe 39 | if defined JAVA_HOME goto findJavaFromJavaHome 40 | 41 | set JAVA_EXE=java.exe 42 | %JAVA_EXE% -version >NUL 2>&1 43 | if %ERRORLEVEL% equ 0 goto execute 44 | 45 | echo. 46 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 47 | echo. 48 | echo Please set the JAVA_HOME variable in your environment to match the 49 | echo location of your Java installation. 50 | 51 | goto fail 52 | 53 | :findJavaFromJavaHome 54 | set JAVA_HOME=%JAVA_HOME:"=% 55 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe 56 | 57 | if exist "%JAVA_EXE%" goto execute 58 | 59 | echo. 60 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 61 | echo. 62 | echo Please set the JAVA_HOME variable in your environment to match the 63 | echo location of your Java installation. 64 | 65 | goto fail 66 | 67 | :execute 68 | @rem Setup the command line 69 | 70 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar 71 | 72 | 73 | @rem Execute Gradle 74 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %* 75 | 76 | :end 77 | @rem End local scope for the variables with windows NT shell 78 | if %ERRORLEVEL% equ 0 goto mainEnd 79 | 80 | :fail 81 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of 82 | rem the _cmd.exe /c_ return code! 83 | set EXIT_CODE=%ERRORLEVEL% 84 | if %EXIT_CODE% equ 0 set EXIT_CODE=1 85 | if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE% 86 | exit /b %EXIT_CODE% 87 | 88 | :mainEnd 89 | if "%OS%"=="Windows_NT" endlocal 90 | 91 | :omega 92 | -------------------------------------------------------------------------------- /testing-ktx/src/test/java/com/jraska/livedata/example/ExampleTest.kt: -------------------------------------------------------------------------------- 1 | package com.jraska.livedata.example 2 | 3 | import androidx.arch.core.executor.testing.InstantTaskExecutorRule 4 | import com.jraska.livedata.TestLifecycle 5 | import com.jraska.livedata.TestObserver 6 | import com.jraska.livedata.test 7 | import org.assertj.core.api.Assertions.assertThat 8 | import org.junit.Before 9 | import org.junit.Rule 10 | import org.junit.Test 11 | 12 | class ExampleTest { 13 | @get:Rule val testRule = InstantTaskExecutorRule() 14 | 15 | private lateinit var viewModel: CounterViewModel 16 | 17 | @Before 18 | fun before() { 19 | viewModel = CounterViewModel() 20 | } 21 | 22 | @Test 23 | fun directAssertion() { 24 | viewModel.counterLiveData() 25 | .test() 26 | .assertHasValue() 27 | .assertHistorySize(1) 28 | .assertNever { it > 0 } 29 | 30 | for (x in 1..4) { 31 | viewModel.plusButtonClicked() 32 | } 33 | 34 | viewModel.counterLiveData() 35 | .test() 36 | .assertHasValue() 37 | .assertValue { it > 3 } 38 | .assertValue(4) 39 | .assertHistorySize(1) // notice the history size is one since we created new observer 40 | .assertNever { it > 4 } 41 | } 42 | 43 | @Test 44 | fun counterHistoryTest() { 45 | val testObserver = viewModel.counterLiveData().test() 46 | 47 | testObserver.assertHasValue() 48 | .assertHistorySize(1) 49 | .assertNever { it > 0 } 50 | 51 | for (x in 1..4) { 52 | viewModel.plusButtonClicked() 53 | } 54 | 55 | testObserver.assertHasValue() 56 | .assertValue { it > 3 } 57 | .assertValue(4) 58 | .assertHistorySize(5) 59 | .assertValueHistory(0, 1, 2, 3, 4) 60 | .assertNever { it > 4 } 61 | 62 | for (i in 1..4) { 63 | viewModel.minusButtonClicked() 64 | } 65 | 66 | testObserver.assertHasValue() 67 | .assertHistorySize(9) 68 | .assertValueHistory(0, 1, 2, 3, 4, 3, 2, 1, 0) 69 | .assertValue(0) 70 | .assertNever { it > 4 } 71 | } 72 | 73 | @Test 74 | fun usingAssertJ() { 75 | val testObserver = viewModel.counterLiveData().test() 76 | 77 | for (x in 1..4) { 78 | viewModel.plusButtonClicked() 79 | } 80 | 81 | val value = testObserver.value() 82 | assertThat(value).isEqualTo(4) 83 | 84 | val valueHistory = testObserver.valueHistory() 85 | assertThat(valueHistory).containsExactly(0, 1, 2, 3, 4) 86 | 87 | viewModel.counterLiveData().removeObserver(testObserver) 88 | assertThat(viewModel.counterLiveData().hasObservers()).isFalse() 89 | } 90 | 91 | @Test 92 | fun useObserverWithLifecycle() { 93 | val testObserver = TestObserver.create() 94 | val testLifecycle = TestLifecycle.initialized() 95 | 96 | viewModel.counterLiveData().observe(testLifecycle, testObserver) 97 | 98 | viewModel.plusButtonClicked() 99 | viewModel.minusButtonClicked() 100 | testObserver.assertNoValue() 101 | 102 | testLifecycle.resume() 103 | for (i in 0..3) { 104 | viewModel.plusButtonClicked() 105 | } 106 | 107 | testObserver.assertHasValue() 108 | .assertValue(4) 109 | .assertHistorySize(5) 110 | .assertNever { value -> value > 4 } 111 | 112 | // Potential remove needs to be handled by you 113 | viewModel.counterLiveData().removeObserver(testObserver) 114 | } 115 | 116 | @Test 117 | fun awaitAsyncValue() { 118 | val testObserver = viewModel.counterLabel() 119 | .test() 120 | .assertNoValue() 121 | 122 | viewModel.asyncUpdateLabel("initial") 123 | 124 | testObserver.assertNoValue() 125 | .awaitValue() 126 | .assertHasValue() 127 | 128 | viewModel.asyncUpdateLabel("different") 129 | 130 | testObserver 131 | .map { it.labels.counterLabel } 132 | .assertValue("initial") 133 | .awaitNextValue() 134 | .assertValue("different") 135 | } 136 | } 137 | -------------------------------------------------------------------------------- /testing-ktx/src/test/java/com/jraska/livedata/example/ExampleJavaTest.java: -------------------------------------------------------------------------------- 1 | package com.jraska.livedata.example; 2 | 3 | import androidx.arch.core.executor.testing.InstantTaskExecutorRule; 4 | import androidx.lifecycle.LiveData; 5 | import com.jraska.livedata.TestLifecycle; 6 | import com.jraska.livedata.TestObserver; 7 | import com.jraska.livedata.example.CounterViewModel.ScreenData; 8 | import org.junit.Before; 9 | import org.junit.Rule; 10 | import org.junit.Test; 11 | 12 | import java.util.List; 13 | 14 | import static org.assertj.core.api.Assertions.assertThat; 15 | 16 | public class ExampleJavaTest { 17 | @Rule public InstantTaskExecutorRule testRule = new InstantTaskExecutorRule(); 18 | 19 | private CounterViewModel viewModel; 20 | 21 | @Before 22 | public void setUp() { 23 | viewModel = new CounterViewModel(); 24 | } 25 | 26 | @Test 27 | public void directAssertion() { 28 | LiveData liveData = viewModel.counterLiveData(); 29 | 30 | TestObserver.test(liveData) 31 | .assertHasValue() 32 | .assertHistorySize(1) 33 | .doOnChanged(value -> assertThat(value).isPositive()) 34 | .assertNever(value -> value > 0); 35 | 36 | for (int i = 0; i < 4; i++) { 37 | viewModel.plusButtonClicked(); 38 | } 39 | 40 | TestObserver.test(liveData) 41 | .assertHasValue() 42 | .assertValue(value -> value > 3) 43 | .assertValue(4) 44 | .assertHistorySize(1) // notice the history size is one since we created new observer 45 | .assertNever(value -> value > 4); 46 | } 47 | 48 | @Test 49 | public void counterHistoryTest() { 50 | LiveData liveData = viewModel.counterLiveData(); 51 | TestObserver testObserver = TestObserver.test(liveData); 52 | 53 | testObserver.assertHasValue() 54 | .assertHistorySize(1) 55 | .assertNever(value -> value > 0); 56 | 57 | for (int i = 0; i < 4; i++) { 58 | viewModel.plusButtonClicked(); 59 | } 60 | 61 | testObserver.assertHasValue() 62 | .assertValue(value -> value > 3) 63 | .assertValue(4) 64 | .assertHistorySize(5) 65 | .assertValueHistory(0, 1, 2, 3, 4) 66 | .assertNever(value -> value > 4); 67 | } 68 | 69 | @Test 70 | public void usingAssertJ() { 71 | LiveData liveData = viewModel.counterLiveData(); 72 | TestObserver testObserver = TestObserver.test(liveData); 73 | 74 | for (int i = 0; i < 4; i++) { 75 | viewModel.plusButtonClicked(); 76 | } 77 | 78 | Integer value = testObserver.value(); 79 | assertThat(value).isEqualTo(4); 80 | 81 | liveData.removeObserver(testObserver); 82 | assertThat(liveData.hasObservers()).isFalse(); 83 | } 84 | 85 | @Test 86 | public void useObserverWithLifecycle() { 87 | TestObserver testObserver = TestObserver.create(); 88 | TestLifecycle testLifecycle = TestLifecycle.initialized(); 89 | 90 | viewModel.counterLiveData().observe(testLifecycle, testObserver); 91 | 92 | viewModel.plusButtonClicked(); 93 | viewModel.minusButtonClicked(); 94 | testObserver.assertNoValue(); 95 | 96 | testLifecycle.resume(); 97 | for (int i = 0; i < 4; i++) { 98 | viewModel.plusButtonClicked(); 99 | } 100 | 101 | testObserver.assertHasValue() 102 | .assertValue(4) 103 | .assertHistorySize(5) 104 | .assertNever(value -> value > 4); 105 | 106 | // Potential remove needs to be handled by you 107 | viewModel.counterLiveData().removeObserver(testObserver); 108 | } 109 | 110 | @Test 111 | public void awaitAsyncValue() throws InterruptedException { 112 | LiveData labelData = viewModel.counterLabel(); 113 | 114 | TestObserver testObserver = TestObserver.test(labelData) 115 | .map(input -> input.getLabels().getCounterLabel()) 116 | .assertNoValue(); 117 | 118 | viewModel.asyncUpdateLabel("initial"); 119 | 120 | testObserver.assertNoValue() 121 | .awaitValue() 122 | .assertHasValue(); 123 | 124 | viewModel.asyncUpdateLabel("different"); 125 | 126 | testObserver 127 | .assertValue("initial") 128 | .awaitNextValue() 129 | .assertValue("different"); 130 | } 131 | } 132 | -------------------------------------------------------------------------------- /testing/src/test/java/com/jraska/livedata/TestObserverTest.kt: -------------------------------------------------------------------------------- 1 | package com.jraska.livedata 2 | 3 | import androidx.arch.core.executor.testing.InstantTaskExecutorRule 4 | import androidx.lifecycle.MutableLiveData 5 | import org.assertj.core.api.Assertions.assertThat 6 | import org.junit.ComparisonFailure 7 | import org.junit.Rule 8 | import org.junit.Test 9 | import java.util.concurrent.TimeUnit 10 | import java.util.concurrent.atomic.AtomicInteger 11 | 12 | class TestObserverTest { 13 | @get:Rule 14 | val testRule = InstantTaskExecutorRule() 15 | 16 | private val testLiveData = MutableLiveData() 17 | 18 | @Test 19 | fun whenValuesPublished_thenHistoryRetained() { 20 | testLiveData.value = 1 21 | testLiveData.value = 2 22 | 23 | val testObserver = TestObserver.test(testLiveData) 24 | 25 | testLiveData.apply { 26 | value = 3 27 | value = 4 28 | value = 5 29 | } 30 | 31 | testObserver.assertHistorySize(4) 32 | .assertValueHistory(2, 3, 4, 5) 33 | 34 | assertThat(testObserver.valueHistory()).containsExactly(2, 3, 4, 5) 35 | } 36 | 37 | @Test 38 | fun assertingValuePasses() { 39 | testLiveData.value = 3 40 | 41 | val value = TestObserver.test(testLiveData) 42 | .assertHasValue() 43 | .assertNever { it > 3 } 44 | .assertValue(3) 45 | .assertValue { it == 3 } 46 | .assertHistorySize(1) 47 | .value() 48 | 49 | assertThat(value).isEqualTo(3) 50 | } 51 | 52 | @Test 53 | fun whenValueChanges_valueUpdated() { 54 | val testObserver = TestObserver.test(testLiveData) 55 | testObserver.assertNoValue() 56 | 57 | testLiveData.value = 3 58 | testLiveData.value = 4 59 | 60 | val value = testObserver 61 | .awaitValue() 62 | .assertHasValue() 63 | .assertHistorySize(2) 64 | .assertValue(4) 65 | .assertValue { it == 4 } 66 | .assertValue { it > 3 } 67 | .assertValueHistory(3, 4) 68 | .value() 69 | 70 | assertThat(value).isEqualTo(4) 71 | } 72 | 73 | @Test 74 | fun whenAwaits_thenGetsValue() { 75 | Thread(setValueAsOne()).start() 76 | 77 | TestObserver.test(testLiveData) 78 | .assertNoValue() 79 | .awaitValue() 80 | .assertHasValue() 81 | 82 | Thread(setValueAsTwo()).start() 83 | 84 | TestObserver.test(testLiveData) 85 | .assertValue(1) 86 | .awaitNextValue() 87 | .assertValue(2) 88 | } 89 | 90 | @Test 91 | fun whenAwaitsWithTimeout_thenGetsValue() { 92 | Thread(setValueAsOne()).start() 93 | 94 | TestObserver.test(testLiveData) 95 | .awaitValue(100, TimeUnit.MILLISECONDS) 96 | .assertHasValue() 97 | 98 | Thread(setValueAsTwo()).start() 99 | 100 | TestObserver.test(testLiveData) 101 | .assertValue(1) 102 | .awaitNextValue(1, TimeUnit.SECONDS) 103 | .assertValue(2) 104 | } 105 | 106 | @Test 107 | fun whenNullValue_thenValueGot() { 108 | val testObserver = TestObserver.test(testLiveData) 109 | testObserver.assertNoValue() 110 | 111 | testLiveData.value = null 112 | 113 | testObserver.assertHasValue() 114 | val value: Int? = testObserver.value() 115 | assertThat(value).isNull() 116 | } 117 | 118 | @Test 119 | fun whenNullValue_checkNull() { 120 | val testObserver: TestObserver = TestObserver.test(testLiveData) 121 | testObserver.assertNoValue() 122 | 123 | testLiveData.value = null 124 | 125 | testObserver.assertNullValue() 126 | assertThat(testObserver.valueHistory()[0]).isNull() 127 | } 128 | 129 | @Test 130 | fun whenNullValueInMiddleOfList_thenValueGot() { 131 | val testObserver = TestObserver.test(testLiveData) 132 | testObserver.assertNoValue() 133 | 134 | testLiveData.value = 1 135 | testLiveData.value = null 136 | testLiveData.value = 2 137 | 138 | testObserver.assertHasValue() 139 | val value: Int? = testObserver.valueHistory()[1] 140 | assertThat(value).isNull() 141 | } 142 | 143 | @Test 144 | fun whenMap_mapsProperly() { 145 | val testObserver = TestObserver.test(testLiveData).map { it * 2 } 146 | testObserver.assertNoValue() 147 | 148 | testLiveData.value = 1 149 | testLiveData.value = 2 150 | 151 | testObserver.assertValue(4) 152 | testObserver.map { it.toString() }.assertValue("4") 153 | } 154 | 155 | @Test 156 | fun whenOnValueChanged_thenTriggersProperly() { 157 | val triggeredCount = AtomicInteger() 158 | 159 | TestObserver.test(testLiveData) 160 | .map { it * 2 } 161 | .doOnChanged { triggeredCount.incrementAndGet() } 162 | 163 | val expectedTriggerCount = 10 164 | repeat(expectedTriggerCount) { 165 | testLiveData.value = 123456 166 | } 167 | 168 | assertThat(triggeredCount.get()).isEqualTo(expectedTriggerCount) 169 | } 170 | 171 | @Test(expected = AssertionError::class) 172 | fun hasValuesAssertionFailsOnNoValue() { 173 | TestObserver.test(testLiveData).assertHasValue() 174 | } 175 | 176 | @Test(expected = AssertionError::class) 177 | fun assertingValueFailsOnOtherValue() { 178 | testLiveData.value = 1 179 | 180 | TestObserver.test(testLiveData).assertValue(3) 181 | } 182 | 183 | @Test(expected = AssertionError::class) 184 | fun assertingValueFailsOnNonMatchingPredicate() { 185 | testLiveData.value = 1 186 | 187 | TestObserver.test(testLiveData).assertValue { it > 1 } 188 | } 189 | 190 | @Test(expected = AssertionError::class) 191 | fun assertingNoValueFailsOnValue() { 192 | testLiveData.value = 1 193 | 194 | TestObserver.test(testLiveData).assertNoValue() 195 | } 196 | 197 | @Test(expected = AssertionError::class) 198 | fun assertingValueCountFailsOnValue() { 199 | testLiveData.value = 1 200 | 201 | TestObserver.test(testLiveData).assertHistorySize(2) 202 | } 203 | 204 | @Test(expected = AssertionError::class) 205 | fun assertingNeverFailsOnPreviousValue() { 206 | val testObserver = TestObserver.test(testLiveData) 207 | 208 | testLiveData.value = 4 209 | testLiveData.value = 5 210 | 211 | testObserver.assertNever { it == 4 } 212 | } 213 | 214 | @Test(expected = ComparisonFailure::class) 215 | fun whenOnValueChanged_thenFailsProperly() { 216 | TestObserver.test(testLiveData) 217 | .map { it * 2 } 218 | .doOnChanged { assertThat(it).isEqualTo(1) } 219 | 220 | testLiveData.value = 1 221 | } 222 | 223 | @Test(expected = AssertionError::class) 224 | fun assertingValuesFailsOnDifferentSize() { 225 | val testObserver = TestObserver.test(testLiveData) 226 | 227 | testLiveData.value = 4 228 | testLiveData.value = 5 229 | 230 | testObserver.assertValueHistory(4) 231 | } 232 | 233 | @Test(expected = AssertionError::class) 234 | fun assertingValuesFailsOnDifferentValues() { 235 | val testObserver = TestObserver.test(testLiveData) 236 | 237 | testLiveData.value = 4 238 | testLiveData.value = 5 239 | 240 | testObserver.assertValueHistory(4, 4) 241 | } 242 | 243 | private fun setValueAsOne() = Runnable { 244 | Thread.sleep(10) 245 | testLiveData.value = 1 246 | } 247 | 248 | private fun setValueAsTwo() = Runnable { 249 | Thread.sleep(10) 250 | testLiveData.value = 2 251 | } 252 | } 253 | -------------------------------------------------------------------------------- /gradlew: -------------------------------------------------------------------------------- 1 | #!/bin/sh 2 | 3 | # 4 | # Copyright © 2015-2021 the original authors. 5 | # 6 | # Licensed under the Apache License, Version 2.0 (the "License"); 7 | # you may not use this file except in compliance with the License. 8 | # You may obtain a copy of the License at 9 | # 10 | # https://www.apache.org/licenses/LICENSE-2.0 11 | # 12 | # Unless required by applicable law or agreed to in writing, software 13 | # distributed under the License is distributed on an "AS IS" BASIS, 14 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 | # See the License for the specific language governing permissions and 16 | # limitations under the License. 17 | # 18 | 19 | ############################################################################## 20 | # 21 | # Gradle start up script for POSIX generated by Gradle. 22 | # 23 | # Important for running: 24 | # 25 | # (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is 26 | # noncompliant, but you have some other compliant shell such as ksh or 27 | # bash, then to run this script, type that shell name before the whole 28 | # command line, like: 29 | # 30 | # ksh Gradle 31 | # 32 | # Busybox and similar reduced shells will NOT work, because this script 33 | # requires all of these POSIX shell features: 34 | # * functions; 35 | # * expansions «$var», «${var}», «${var:-default}», «${var+SET}», 36 | # «${var#prefix}», «${var%suffix}», and «$( cmd )»; 37 | # * compound commands having a testable exit status, especially «case»; 38 | # * various built-in commands including «command», «set», and «ulimit». 39 | # 40 | # Important for patching: 41 | # 42 | # (2) This script targets any POSIX shell, so it avoids extensions provided 43 | # by Bash, Ksh, etc; in particular arrays are avoided. 44 | # 45 | # The "traditional" practice of packing multiple parameters into a 46 | # space-separated string is a well documented source of bugs and security 47 | # problems, so this is (mostly) avoided, by progressively accumulating 48 | # options in "$@", and eventually passing that to Java. 49 | # 50 | # Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS, 51 | # and GRADLE_OPTS) rely on word-splitting, this is performed explicitly; 52 | # see the in-line comments for details. 53 | # 54 | # There are tweaks for specific operating systems such as AIX, CygWin, 55 | # Darwin, MinGW, and NonStop. 56 | # 57 | # (3) This script is generated from the Groovy template 58 | # https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt 59 | # within the Gradle project. 60 | # 61 | # You can find Gradle at https://github.com/gradle/gradle/. 62 | # 63 | ############################################################################## 64 | 65 | # Attempt to set APP_HOME 66 | 67 | # Resolve links: $0 may be a link 68 | app_path=$0 69 | 70 | # Need this for daisy-chained symlinks. 71 | while 72 | APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path 73 | [ -h "$app_path" ] 74 | do 75 | ls=$( ls -ld "$app_path" ) 76 | link=${ls#*' -> '} 77 | case $link in #( 78 | /*) app_path=$link ;; #( 79 | *) app_path=$APP_HOME$link ;; 80 | esac 81 | done 82 | 83 | APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit 84 | 85 | APP_NAME="Gradle" 86 | APP_BASE_NAME=${0##*/} 87 | 88 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 89 | DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"' 90 | 91 | # Use the maximum available, or set MAX_FD != -1 to use that value. 92 | MAX_FD=maximum 93 | 94 | warn () { 95 | echo "$*" 96 | } >&2 97 | 98 | die () { 99 | echo 100 | echo "$*" 101 | echo 102 | exit 1 103 | } >&2 104 | 105 | # OS specific support (must be 'true' or 'false'). 106 | cygwin=false 107 | msys=false 108 | darwin=false 109 | nonstop=false 110 | case "$( uname )" in #( 111 | CYGWIN* ) cygwin=true ;; #( 112 | Darwin* ) darwin=true ;; #( 113 | MSYS* | MINGW* ) msys=true ;; #( 114 | NONSTOP* ) nonstop=true ;; 115 | esac 116 | 117 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar 118 | 119 | 120 | # Determine the Java command to use to start the JVM. 121 | if [ -n "$JAVA_HOME" ] ; then 122 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 123 | # IBM's JDK on AIX uses strange locations for the executables 124 | JAVACMD=$JAVA_HOME/jre/sh/java 125 | else 126 | JAVACMD=$JAVA_HOME/bin/java 127 | fi 128 | if [ ! -x "$JAVACMD" ] ; then 129 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME 130 | 131 | Please set the JAVA_HOME variable in your environment to match the 132 | location of your Java installation." 133 | fi 134 | else 135 | JAVACMD=java 136 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 137 | 138 | Please set the JAVA_HOME variable in your environment to match the 139 | location of your Java installation." 140 | fi 141 | 142 | # Increase the maximum file descriptors if we can. 143 | if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then 144 | case $MAX_FD in #( 145 | max*) 146 | MAX_FD=$( ulimit -H -n ) || 147 | warn "Could not query maximum file descriptor limit" 148 | esac 149 | case $MAX_FD in #( 150 | '' | soft) :;; #( 151 | *) 152 | ulimit -n "$MAX_FD" || 153 | warn "Could not set maximum file descriptor limit to $MAX_FD" 154 | esac 155 | fi 156 | 157 | # Collect all arguments for the java command, stacking in reverse order: 158 | # * args from the command line 159 | # * the main class name 160 | # * -classpath 161 | # * -D...appname settings 162 | # * --module-path (only if needed) 163 | # * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables. 164 | 165 | # For Cygwin or MSYS, switch paths to Windows format before running java 166 | if "$cygwin" || "$msys" ; then 167 | APP_HOME=$( cygpath --path --mixed "$APP_HOME" ) 168 | CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" ) 169 | 170 | JAVACMD=$( cygpath --unix "$JAVACMD" ) 171 | 172 | # Now convert the arguments - kludge to limit ourselves to /bin/sh 173 | for arg do 174 | if 175 | case $arg in #( 176 | -*) false ;; # don't mess with options #( 177 | /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath 178 | [ -e "$t" ] ;; #( 179 | *) false ;; 180 | esac 181 | then 182 | arg=$( cygpath --path --ignore --mixed "$arg" ) 183 | fi 184 | # Roll the args list around exactly as many times as the number of 185 | # args, so each arg winds up back in the position where it started, but 186 | # possibly modified. 187 | # 188 | # NB: a `for` loop captures its iteration list before it begins, so 189 | # changing the positional parameters here affects neither the number of 190 | # iterations, nor the values presented in `arg`. 191 | shift # remove old arg 192 | set -- "$@" "$arg" # push replacement arg 193 | done 194 | fi 195 | 196 | # Collect all arguments for the java command; 197 | # * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of 198 | # shell script including quotes and variable substitutions, so put them in 199 | # double quotes to make sure that they get re-expanded; and 200 | # * put everything else in single quotes, so that it's not re-expanded. 201 | 202 | set -- \ 203 | "-Dorg.gradle.appname=$APP_BASE_NAME" \ 204 | -classpath "$CLASSPATH" \ 205 | org.gradle.wrapper.GradleWrapperMain \ 206 | "$@" 207 | 208 | # Stop when "xargs" is not available. 209 | if ! command -v xargs >/dev/null 2>&1 210 | then 211 | die "xargs is not available" 212 | fi 213 | 214 | # Use "xargs" to parse quoted args. 215 | # 216 | # With -n1 it outputs one arg per line, with the quotes and backslashes removed. 217 | # 218 | # In Bash we could simply go: 219 | # 220 | # readarray ARGS < <( xargs -n1 <<<"$var" ) && 221 | # set -- "${ARGS[@]}" "$@" 222 | # 223 | # but POSIX shell has neither arrays nor command substitution, so instead we 224 | # post-process each arg (as a line of input to sed) to backslash-escape any 225 | # character that might be a shell metacharacter, then use eval to reverse 226 | # that process (while maintaining the separation between arguments), and wrap 227 | # the whole thing up as a single "set" statement. 228 | # 229 | # This will of course break if any of these variables contains a newline or 230 | # an unmatched quote. 231 | # 232 | 233 | eval "set -- $( 234 | printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" | 235 | xargs -n1 | 236 | sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' | 237 | tr '\n' ' ' 238 | )" '"$@"' 239 | 240 | exec "$JAVACMD" "$@" 241 | -------------------------------------------------------------------------------- /testing/src/main/java/com/jraska/livedata/TestObserver.java: -------------------------------------------------------------------------------- 1 | package com.jraska.livedata; 2 | 3 | import androidx.annotation.NonNull; 4 | import androidx.annotation.Nullable; 5 | import androidx.arch.core.util.Function; 6 | import androidx.core.util.Consumer; 7 | import androidx.lifecycle.LiveData; 8 | import androidx.lifecycle.Observer; 9 | 10 | import java.util.ArrayList; 11 | import java.util.Arrays; 12 | import java.util.Collections; 13 | import java.util.List; 14 | import java.util.concurrent.CountDownLatch; 15 | import java.util.concurrent.TimeUnit; 16 | 17 | public final class TestObserver implements Observer { 18 | private final List valueHistory = new ArrayList<>(); 19 | private final List> onChanged = new ArrayList<>(); 20 | private CountDownLatch valueLatch = new CountDownLatch(1); 21 | 22 | private TestObserver() { 23 | } 24 | 25 | @Override 26 | public void onChanged(@Nullable T value) { 27 | valueHistory.add(value); 28 | valueLatch.countDown(); 29 | 30 | for (Consumer consumer : onChanged) { 31 | consumer.accept(value); 32 | } 33 | } 34 | 35 | /** 36 | * Returns a last received value. Fails if no value was received yet. 37 | * 38 | * @return a last received value 39 | */ 40 | public T value() { 41 | assertHasValue(); 42 | return valueHistory.get(valueHistory.size() - 1); 43 | } 44 | 45 | /** 46 | * Returns a unmodifiable list of received values. 47 | * 48 | * @return a list of received values 49 | */ 50 | public List valueHistory() { 51 | return Collections.unmodifiableList(valueHistory); 52 | } 53 | 54 | /** 55 | * Assert that this TestObserver received at least one value. 56 | * 57 | * @return this 58 | */ 59 | public TestObserver assertHasValue() { 60 | if (valueHistory.isEmpty()) { 61 | throw fail("Observer never received any value"); 62 | } 63 | 64 | return this; 65 | } 66 | 67 | /** 68 | * Assert that this TestObserver never received any value. 69 | * 70 | * @return this 71 | */ 72 | public TestObserver assertNoValue() { 73 | if (!valueHistory.isEmpty()) { 74 | throw fail("Expected no value, but received: " + value()); 75 | } 76 | 77 | return this; 78 | } 79 | 80 | /** 81 | * Assert that this TestObserver last received value was null 82 | * 83 | * @return this 84 | */ 85 | public TestObserver assertNullValue() { 86 | T value = value(); 87 | 88 | if (value != null) { 89 | throw fail("Value " + valueAndClass(value) + " is not null"); 90 | } 91 | return this; 92 | } 93 | 94 | /** 95 | * Assert that this TestObserver received the specified number of values. 96 | * 97 | * @param expectedSize the expected number of received values 98 | * @return this 99 | */ 100 | public TestObserver assertHistorySize(int expectedSize) { 101 | int size = valueHistory.size(); 102 | if (size != expectedSize) { 103 | throw fail("History size differ; Expected: " + expectedSize + ", Actual: " + size); 104 | } 105 | return this; 106 | } 107 | 108 | /** 109 | * Assert that this TestObserver last received value is equal to 110 | * the given value. 111 | * 112 | * @param expected the value to expect being equal to last value, can be null 113 | * @return this 114 | */ 115 | public TestObserver assertValue(T expected) { 116 | T value = value(); 117 | 118 | if (notEquals(value, expected)) { 119 | throw fail("Expected: " + valueAndClass(expected) + ", Actual: " + valueAndClass(value)); 120 | } 121 | 122 | return this; 123 | } 124 | 125 | /** 126 | * Asserts that for this TestObserver last received value 127 | * the provided predicate returns true. 128 | * 129 | * @param valuePredicate the predicate that receives the observed value 130 | * and should return true for the expected value. 131 | * @return this 132 | */ 133 | public TestObserver assertValue(@NonNull Function valuePredicate) { 134 | T value = value(); 135 | 136 | if (!valuePredicate.apply(value)) { 137 | throw fail("Value " + valueAndClass(value) + " does not match the predicate " 138 | + valuePredicate.toString() + "."); 139 | } 140 | 141 | return this; 142 | } 143 | 144 | /** 145 | * Asserts that the TestObserver received only the specified values in the specified order. 146 | * 147 | * @param values the values expected 148 | * @return this 149 | */ 150 | @SuppressWarnings("unchecked") 151 | public TestObserver assertValueHistory(T... values) { 152 | List valueHistory = valueHistory(); 153 | int size = valueHistory.size(); 154 | if (size != values.length) { 155 | throw fail("Value count differs; expected: " + values.length + " " + Arrays.toString(values) 156 | + " but was: " + size + " " + this.valueHistory); 157 | } 158 | 159 | for (int valueIndex = 0; valueIndex < size; valueIndex++) { 160 | T historyItem = valueHistory.get(valueIndex); 161 | T expectedItem = values[valueIndex]; 162 | if (notEquals(expectedItem, historyItem)) { 163 | throw fail("Values at position " + valueIndex + " differ; expected: " + valueAndClass(expectedItem) + " but was: " + valueAndClass(historyItem)); 164 | } 165 | } 166 | 167 | return this; 168 | } 169 | 170 | /** 171 | * Asserts that this TestObserver did not receive any value for which 172 | * the provided predicate returns true. 173 | * 174 | * @param valuePredicate the predicate that receives the observed values 175 | * and should return true for the value not supposed to be received. 176 | * @return this 177 | */ 178 | public TestObserver assertNever(Function valuePredicate) { 179 | int size = valueHistory.size(); 180 | for (int valueIndex = 0; valueIndex < size; valueIndex++) { 181 | T value = this.valueHistory.get(valueIndex); 182 | if (valuePredicate.apply(value)) { 183 | throw fail("Value at position " + valueIndex + " matches predicate " 184 | + valuePredicate.toString() + ", which was not expected."); 185 | } 186 | } 187 | 188 | return this; 189 | } 190 | 191 | /** 192 | * Allows assertion of some mapped value extracted from originally observed values. 193 | * History of observed values is retained. 194 | *

195 | * This can became useful when you want to perform assertions on some complex structure and 196 | * you want to assert only on one field. 197 | * 198 | * @param mapper Function to map originally observed value. 199 | * @param Type of mapper. 200 | * @return TestObserver for mapped value 201 | */ 202 | public TestObserver map(Function mapper) { 203 | TestObserver newObserver = create(); 204 | // We want the history match the current one 205 | for (T value : valueHistory) { 206 | newObserver.onChanged(mapper.apply(value)); 207 | } 208 | 209 | doOnChanged(new Map<>(newObserver, mapper)); 210 | 211 | return newObserver; 212 | } 213 | 214 | /** 215 | * Adds a Consumer which will be triggered on each value change to allow assertion on the value. 216 | * 217 | * @param onChanged Consumer to call when new value is received 218 | * @return this 219 | */ 220 | public TestObserver doOnChanged(Consumer onChanged) { 221 | this.onChanged.add(onChanged); 222 | return this; 223 | } 224 | 225 | /** 226 | * Awaits until this TestObserver has any value. 227 | *

228 | * If this TestObserver has already value then this method returns immediately. 229 | * 230 | * @return this 231 | * @throws InterruptedException if the current thread is interrupted while waiting 232 | */ 233 | public TestObserver awaitValue() throws InterruptedException { 234 | valueLatch.await(); 235 | return this; 236 | } 237 | 238 | /** 239 | * Awaits the specified amount of time or until this TestObserver has any value. 240 | *

241 | * If this TestObserver has already value then this method returns immediately. 242 | * 243 | * @return this 244 | * @throws InterruptedException if the current thread is interrupted while waiting 245 | */ 246 | public TestObserver awaitValue(long timeout, TimeUnit timeUnit) throws InterruptedException { 247 | valueLatch.await(timeout, timeUnit); 248 | return this; 249 | } 250 | 251 | /** 252 | * Awaits until this TestObserver receives next value. 253 | *

254 | * If this TestObserver has already value then it awaits for another one. 255 | * 256 | * @return this 257 | * @throws InterruptedException if the current thread is interrupted while waiting 258 | */ 259 | public TestObserver awaitNextValue() throws InterruptedException { 260 | return withNewLatch().awaitValue(); 261 | } 262 | 263 | 264 | /** 265 | * Awaits the specified amount of time or until this TestObserver receives next value. 266 | *

267 | * If this TestObserver has already value then it awaits for another one. 268 | * 269 | * @return this 270 | * @throws InterruptedException if the current thread is interrupted while waiting 271 | */ 272 | public TestObserver awaitNextValue(long timeout, TimeUnit timeUnit) throws InterruptedException { 273 | return withNewLatch().awaitValue(timeout, timeUnit); 274 | } 275 | 276 | private TestObserver withNewLatch() { 277 | valueLatch = new CountDownLatch(1); 278 | return this; 279 | } 280 | 281 | private AssertionError fail(String message) { 282 | return new AssertionError(message); 283 | } 284 | 285 | private static boolean notEquals(Object o1, Object o2) { 286 | return o1 != o2 && (o1 == null || !o1.equals(o2)); 287 | } 288 | 289 | private static String valueAndClass(Object value) { 290 | if (value != null) { 291 | return value + " (class: " + value.getClass().getSimpleName() + ")"; 292 | } 293 | return "null"; 294 | } 295 | 296 | public static TestObserver create() { 297 | return new TestObserver<>(); 298 | } 299 | 300 | public static TestObserver test(LiveData liveData) { 301 | TestObserver observer = new TestObserver<>(); 302 | liveData.observeForever(observer); 303 | return observer; 304 | } 305 | 306 | static final class Map implements Consumer { 307 | private final TestObserver newObserver; 308 | private final Function mapper; 309 | 310 | Map(TestObserver newObserver, Function mapper) { 311 | this.newObserver = newObserver; 312 | this.mapper = mapper; 313 | } 314 | 315 | @Override 316 | public void accept(T value) { 317 | newObserver.onChanged(mapper.apply(value)); 318 | } 319 | } 320 | } 321 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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