FileBufferFunctions.testGetFileStoreAnnotationModel fails when ran from Eclipse

[trancexpress]

Run e.g. org.eclipse.core.filebuffers.tests.FileBuffersForFilesInLinkedFolders, observe:

org.opentest4j.AssertionFailedError: expected: not <null>
	at org.eclipse.core.filebuffers.tests.FileBufferFunctions.testGetFileStoreAnnotationModel(FileBufferFunctions.java:1297)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1596)
	at java.base/java.util.Optional.ifPresent(Optional.java:178)
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184)
	at java.base/java.util.stream.IntPipeline$1$1.accept(IntPipeline.java:180)
	at java.base/java.util.stream.Streams$RangeIntSpliterator.forEachRemaining(Streams.java:108)
	at java.base/java.util.Spliterator$OfInt.forEachRemaining(Spliterator.java:712)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
	at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151)
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1596)

There is this code:

	@Override
	protected Class<IAnnotationModel> getAnnotationModelClass() throws Exception {
		Bundle bundle= Platform.getBundle("org.eclipse.ui.editors");
		return bundle != null ? IAnnotationModel.class : null;
	}

In several of the extending test cases:

tests/org.eclipse.core.filebuffers.tests/src/org/eclipse/core/filebuffers/tests/FileBuffersForFilesInLinkedFolders.java:                Bundle bundle= Platform.getBundle("org.eclipse.ui.editors");
tests/org.eclipse.core.filebuffers.tests/src/org/eclipse/core/filebuffers/tests/FileBuffersForLinkedFiles.java:         Bundle bundle= Platform.getBundle("org.eclipse.ui.editors");
tests/org.eclipse.core.filebuffers.tests/src/org/eclipse/core/filebuffers/tests/FileBuffersForWorkspaceFiles.java:              Bundle bundle= Platform.getBundle("org.eclipse.ui.editors");
tests/org.eclipse.core.filebuffers.tests/src/org/eclipse/core/filebuffers/tests/FileStoreFileBuffersForWorkspaceFiles.java:             Bundle bundle= Platform.getBundle("org.eclipse.ui.editors");

But the bundle org.eclipse.ui.editor is not in the MANIFEST.MF. Adding it there does make the test pass.

Considering the following, no idea how to fix such problems:

• DependentUsageTests fails when executed from Eclipse eclipse-pde/eclipse.pde#2225
• Add missing bundle so that UpdateUnitVersionsCommandTests doesn't fail when ran from Eclipse eclipse-pde/eclipse.pde#2130

Likely related to: eclipse-pde/eclipse.pde#1999, eclipse-pde/eclipse.pde#2082