private void validateJson(final TestLauncher.TestState expected, final String json) {
    TestLauncher.TestState actual = TestLauncher.TestState.fromJson(json);
    validateStatus(expected, actual);
  }
Unit tests for {@link AbstractLauncher.ServiceState}. Tests marshalling of ServiceState to and
from JSON.

@since GemFire 7.0
geode-core/src/test/java/org/apache/geode/distributed/AbstractLauncherServiceStateTest.java