JDK-8179317 rewritten runtime shell tests to Java. There is a little omission in VM variant selection, which makes Zero fail some of the tier1 tests, like:
$ CONF=linux-x86_64-zero-fastdebug make exploded-test TEST=runtime/StackGap/TestStackGap.java
STDERR:
java.lang.Error: TESTBUG: unsupported vm variant
at jdk.test.lib.Platform.variant(Platform.java:368)
at jdk.test.lib.Platform.jvmLibDir(Platform.java:357)
at jdk.test.lib.process.ProcessTools.addJvmLib(ProcessTools.java:585)
at jdk.test.lib.process.ProcessTools.createNativeTestProcessBuilder(ProcessTools.java:575)