added DnD tests -------------
Commit messages: - added dnd tests Changes: https://git.openjdk.org/jdk/pull/13765/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=13765&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8307128 Stats: 1678 lines in 5 files changed: 1678 ins; 0 del; 0 mod Patch: https://git.openjdk.org/jdk/pull/13765.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/13765/head:pull/13765 PR: https://git.openjdk.org/jdk/pull/13765
