Fix null exception in anyTestMethodNamesMatch predicate

[andre15silva]

Sometimes, the Description object given to the anyTestMethodNamesMatch predicate does not represent a method.

In those cases, the ListenerUtils.getMethodName function returns null, leading to a NullPointerException when we try to match said null object in a regex Matcher in

test-runner/src/main/java/eu/stamp_project/testrunner/runner/MethodFilter.java

Lines 46 to 54 in a2fc403

	private final Predicate<Description> anyTestMethodNamesMatch = description ->
	this.testMethodNames.stream()
	.anyMatch(testMethodName ->
	Pattern.compile("(" + ListenerUtils.getClassName.apply(description) + ")?" + testMethodName + "\\[(\\d+)\\]")
	.matcher(ListenerUtils.getMethodName.apply(description))
	.find()
	) ||
	this.testMethodNames.contains(ListenerUtils.getMethodName.apply(description)) ||
	this.testMethodNames.contains(ListenerUtils.getClassName.apply(description) + "#" + ListenerUtils.getMethodName.apply(description));

This PR fixes that issue by introducing a null check in said predicate.

[andre15silva]

Hi @danglotb :)

Would you be able to review this PR?
It is linked with ASSERT-KTH/flacoco#153 (comment)

Merci!

[danglotb]

LGTM

[andre15silva]

Thanks :)

[monperrus]

cool!