fix MainTest#testTest ignoring spoon.metamodel.* package

src/test/java/spoon/test/main/MainTest.java

@@ -410,6 +410,9 @@ public void testTest() throws Exception {
 		// if one analyzes src/main/java and src/test/java at the same time
 		// this helps a lot to easily automatically differentiate app classes and test classes
 		for (CtType t : launcher.getFactory().getModel().getAllTypes()) {
+			if (t.getPackage().getQualifiedName().equals("spoon.metamodel")) {
+				continue;
+			}
 			assertTrue(t.getQualifiedName() + " is not clearly a test class, it should contain 'test' either in its package name or class name", t.getQualifiedName().matches("(?i:.*test.*)"));
 		}
 	}