Unstable test: testGraphSnippet6

[ptziegler]

Every now and then, one of the Zest tests is failing:

Cannot invoke "org.eclipse.zest.core.widgets.internal.GraphLabel.getText()" because "fishEyeFigure" is null
java.lang.NullPointerException: Cannot invoke "org.eclipse.zest.core.widgets.internal.GraphLabel.getText()" because "fishEyeFigure" is null
	at org.eclipse.zest.tests.examples.GraphSWTTests.testGraphSnippet6(GraphSWTTests.java:343)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:569)
	at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:727)
	at org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60)
	at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131)
	at org.eclipse.zest.tests.examples.AbstractGraphTest.doTest(AbstractGraphTest.java:173)
	at org.eclipse.zest.tests.examples.AbstractGraphTest$SWTBotExtension.interceptTestMethod(AbstractGraphTest.java:87)

[ptziegler]

The cause is probably a timing issue. The mouse move event might not have been processed by the time we try to access the fisheye figure.