Gradle CreateDebugCoverageReport doesn't run local unit tests

I'm using jacoco for code coverage. It runs (./gradlew createDebugCoverageReport) fine and generates code coverage for all the androidTest cases. However, it doesn't run the local unit tests, and hence doesn't compute the code coverage by these tests. How can I achieve all test cases including local to run and code coverage for all. I'm not sure what I'm missing. Any pointers will be great.

I can successfully run all the local unit tests on JVM with ./gradlew testDebugUnitTest

Please let me know if any more information is required.