Looks like this test was written based on assumption that SystemTray is supported on all platforms.
However on Linux it may not be true. Availability of SystemTray is detected by getting owner of `_NET_SYSTEM_TRAY` selection: https://github.com/openjdk/jdk/blob/739769c8fc4b496f08a92225a12d07414537b6c0/src/java.desktop/unix/classes/sun/awt/X11/XSystemTrayPeer.java#L42 https://github.com/openjdk/jdk/blob/739769c8fc4b496f08a92225a12d07414537b6c0/src/java.desktop/unix/classes/sun/awt/X11/XSystemTrayPeer.java#L58-L59 As an example, SystemTray is not available on Wayland because of this. So I modified the test: - WIndows and macOS: expecting SystemTray. - Linux: check absence/presence of `UnsupportedOperationException` exception of `SystemTray.getSystemTray()` call based on `SystemTray.isSupported()` result. ------------- Commit messages: - initial Changes: https://git.openjdk.java.net/jdk/pull/8346/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=8346&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8193543 Stats: 29 lines in 2 files changed: 14 ins; 2 del; 13 mod Patch: https://git.openjdk.java.net/jdk/pull/8346.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/8346/head:pull/8346 PR: https://git.openjdk.java.net/jdk/pull/8346
