CODEWITHSUNDEEP
androidunit-testinggradle
Colin M.
Colin M.

Reputation: 455

Gradle Android unit tests that depend on an 'aar'

Want to be able to depend on an AAR for my unit tests in a Gradle-Android project. I do not want to manually include the external library source or binaries inside my project (for multiple reasons).

We can depend on remote aar files like this in the build.gradle:

compile 'com.facebook:facebook-android-sdk:3.6.0:@aar'

But when using the gradle test method described here: https://stackoverflow.com/a/16952507/821636 (Since Jake Wharton's plugin, isn't quite there yet), trying to include an aar as a dependency for that method like this:

testLocalCompile 'com.facebook:facebook-android-sdk:3.6.0:@aar

Does not seem to actually include the aar in the classpath for tests (run with ./gradlew check) since I get NoClassDefFoundError for classes in the aar. NOTE: When jar dependencies are included this way, they work.

Thinking there must be something in that localTest task that needs to add the aar extension since it's not the default type of dependency (jar).

Here is copy of that task copied from the SO answer referenced above:

task localTest(type: Test, dependsOn: assembleDebug) {
    testClassesDir = sourceSets.testLocal.output.classesDir
    workingDir = "${rootProject.projectDir}/app/src/main"

    android.sourceSets.main.java.srcDirs.each { dir ->
        def buildDir = dir.getAbsolutePath().split('/')

        buildDir =  (buildDir[0..(buildDir.length - 4)] + ['build', 'classes', 'debug']).join('/')
        sourceSets.testLocal.compileClasspath += files(buildDir)
        sourceSets.testLocal.runtimeClasspath += files(buildDir)
    }

    classpath = sourceSets.testLocal.runtimeClasspath
}

Upvotes: 4

Views: 3191

Answers (1)

myanimal
myanimal

Reputation: 3620

I ran into this problem and found a solution - include the classes.jar from the exploded bundle (.aar) in the build folder. I don't think will help with finding resources in .aar dependencies though.

testLocalCompile fileTree(dir: "$project.buildDir/exploded-bundles", include: "**/classes.jar")

Edit: Since Android Gradle build tools 0.9.0 the dependency has changed to:

androidTestCompile fileTree(dir: "$project.buildDir/exploded-aar", include: "**/classes.jar")

As of Android Gradle plugin 0.12.2:

testLocalCompile fileTree(dir: "$project.buildDir/intermediates/exploded-aar/", include:"**/classes.jar")

Upvotes: 4

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