testOptions { unitTests.all { systemProperty 'user.home', '/tmp/robolectric' } } Use code with caution.
Change the to $MODULE_DIR$ (or $ContentRoot$ in newer versions). 3. Handle Network and Proxy Issues
Add proxy details to your gradle.properties file to allow the test runner to reach Maven Central. couldn't create lock file .robolectric-download-lock
The error typically occurs when the Robolectric framework is unable to download the required android-all JAR dependencies or lacks the permission to write to its designated cache directory.
Use the following system properties in build.gradle to redirect the download source to an internal Maven mirror: testOptions { unitTests
Ensure you are not running as root if the volume is mounted as a non-root user, or use -u=$(id -u):$(id -g) to match permissions. 2. Configure Your Working Directory (Android Studio)
This lock file is used to ensure that only one process downloads these large SDK artifacts (approx. 35MB each) at a time. If the process fails to create this file, your unit tests will often crash before they even begin. Common Root Causes Handle Network and Proxy Issues Add proxy details
The most frequent cause is running the process as a user who does not have write access to the directory where Robolectric is trying to create the lock file.