Run tests with Git Pre-Push hook

#!/bin/bash
CMD="./gradlew clean test"
# Check if we actually have commits to push
commits=`git log @{u}..`
if [ -z "$commits" ]; then
 exit 0
fi
$CMD
RESULT=$?
if [ $RESULT -ne 0 ]; then
 echo "failed $CMD"
 exit 1
fi
exit 0