Revert "Generator: temp. turn off broken part-partof test #138"

This reverts commit b3bc84f.

Author: greenrobot-team

generator/test.sh

@@ -46,10 +46,6 @@ function runTestCase() {
 
 if [ $# -eq 0 ]; then
   for testCase in "${myDir}"/integration-tests/*/; do
-    # Temporarily turn of broken part-partof test, see objectbox/objectbox-dart#138
-    if [[ "$(basename "$testCase")" == "part-partof" ]]; then
-      continue
-    fi
     runTestCase "${testCase}"
   done
 else