Why isn't Gradle running my unit tests?

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1

I’m in the middle of migrating a project from Intellij IDEA 12 to Android Studio, and we’re trying to set up the Gradle build files to also let us build our project on a continuous integration server. I’m having a lot of trouble migrating the unit tests though.

My unit tests use Robolectric. I’m using the gradle-android-test-plugin to get Robolectric working. My unit tests are under src/test/java, next to the main source files in src/main/java. I have four subprojects included in the root’s settings.gradle and an empty root build.gradle.

The unit tests only run for one of my subprojects when I execute “gradle test”. For all of the other subprojects, the test classes are built and I see them under build/test-classes, but none of the tests are executed.

What could I be missing? I’m totally new to Gradle (and other Java build automation tools), so please let me know if I should be posting any more information about my configuration. Thanks!

2

We’d need more information. For starters, how and where have you configured test execution?

3

I’m using the (default?) “test” task. I’m not sure whether this is built-in to Gradle, or comes from the “android”, “android-library”, or “android-test” plugin. Where should I look to find out more information for you?

I have my test classes under the $SUBPROJECT/src/test/java directory, and they’re configured with JUnit 4’s annotations.

I have the same build.gradle file for both the subproject with working tests and the subproject that doesn’t run any tests:

buildscript {
    repositories {
        mavenCentral()
        maven {
            url 'https://oss.sonatype.org/content/repositories/snapshots/'
        }
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:0.6.+'
        classpath 'com.squareup.gradle:gradle-android-test-plugin:0.9.1-SNAPSHOT'
    }
}
apply plugin: 'android-library'
apply plugin: 'android-test'
  repositories {
    mavenCentral()
}
  android {
    compileSdkVersion 19
    buildToolsVersion "19.0.0"
      defaultConfig {
        minSdkVersion 9
        targetSdkVersion 19
    }
    release {
        runProguard false
        proguardFile 'proguard-rules.txt'
        proguardFile getDefaultProguardFile('proguard-android-optimize.txt')
    }
}
  dependencies {
 compile 'com.android.support:appcompat-v7:+'
      testCompile 'junit:junit:4.11'
    testCompile 'org.robolectric:robolectric:2.2'
    testCompile 'org.mockito:mockito-core:1.9.5'
}
  task showTestResults(type:Exec, dependsOn:test) {
    // TODO: Fix this to read the test reports directory from the build system
    workingDir 'build/test-report'
    commandLine 'open', 'index.html'
}
4

This is all done by the ‘android-test’ plugin. You’ll get the best result by asking the author of that.