Make sure indexer has finished the files in question

I saw in one test run this raw output for testCommonSDK:

50% 1/2 sources, 0 headers: parsing source.cpp (/baz1666753431025)

which I think means that the indexing was not done for source.cpp
so apply this pattern to testCommonSDK and IndexSearchTest
both have intermittent failures on GitHub actions but pass
fine locally.

Part of #117

core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/internal/index/tests/IndexSearchTest.java

@@ -36,6 +36,7 @@
 import org.eclipse.cdt.internal.core.pdom.PDOM;
 import org.eclipse.cdt.internal.core.pdom.dom.PDOMBinding;
 import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.Path;
 
 import junit.framework.TestSuite;
 
@@ -62,6 +63,11 @@ public void setUp() throws Exception {
 			fProject = createProject(true, "resources/indexTests/search");
 		}
 		fIndex = CCorePlugin.getIndexManager().getIndex(fProject);
+		waitUntilFileIsIndexed(fIndex, fProject.getProject().getFile(new Path("/enumerator.cpp")));
+		waitUntilFileIsIndexed(fIndex, fProject.getProject().getFile(new Path("/macro.c")));
+		waitUntilFileIsIndexed(fIndex, fProject.getProject().getFile(new Path("/nested.cpp")));
+		waitUntilFileIsIndexed(fIndex, fProject.getProject().getFile(new Path("/staticFunc1.cpp")));
+		waitUntilFileIsIndexed(fIndex, fProject.getProject().getFile(new Path("/staticFunc2.cpp")));
 		fIndex.acquireReadLock();
 	}
 

core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/internal/pdom/tests/PDOMProviderTests.java

@@ -190,6 +190,7 @@ public boolean providesFor(ICProject project) throws CoreException {
 
 		{
 			IIndex index = CCorePlugin.getIndexManager().getIndex(cproject2, A_FRAGMENT_OPTIONS);
+			waitUntilFileIsIndexed(index, cproject2.getProject().getFile(new Path("/source.cpp")));
 			index.acquireReadLock();
 			try {
 				IBinding[] bindings = index.findBindings("A".toCharArray(), IndexFilter.ALL, npm());
@@ -209,6 +210,7 @@ public boolean acceptBinding(IBinding binding) {
 
 		{
 			IIndex index = CCorePlugin.getIndexManager().getIndex(cproject3, A_FRAGMENT_OPTIONS);
+			waitUntilFileIsIndexed(index, cproject3.getProject().getFile(new Path("/source.cpp")));
 			index.acquireReadLock();
 			try {
 				IBinding[] bindings = index.findBindings("A".toCharArray(), IndexFilter.ALL, npm());
@@ -229,6 +231,8 @@ public boolean acceptBinding(IBinding binding) {
 		{
 			IIndex index = CCorePlugin.getIndexManager().getIndex(new ICProject[] { cproject2, cproject3 },
 					A_FRAGMENT_OPTIONS);
+			waitUntilFileIsIndexed(index, cproject2.getProject().getFile(new Path("/source.cpp")));
+			waitUntilFileIsIndexed(index, cproject3.getProject().getFile(new Path("/source.cpp")));
 			index.acquireReadLock();
 			try {
 				IBinding[] bindings = index.findBindings("A".toCharArray(), IndexFilter.ALL, npm());