refactor: move Validation.java to testclasses in prettyprinter

src/test/java/spoon/test/prettyprinter/LinesTest.java

@@ -31,7 +31,7 @@ public void setup() throws Exception {
 		spoon.createCompiler(
 				factory,
 				SpoonResourceHelper
-						.resources("./src/test/java/spoon/test/prettyprinter/Validation.java"))
+						.resources("./src/test/java/spoon/test/prettyprinter/testclasses/Validation.java"))
 				.build();
 		factory.getEnvironment().setPreserveLineNumbers(true);
 		factory.getEnvironment().setAutoImports(false);
@@ -54,7 +54,7 @@ public void testPrettyPrinterWithLines() throws Exception {
 		assertEquals(0, factory.getEnvironment().getErrorCount());
 
 		// contract: in line preserve mode, toString is not prefixed or suffixed by newlines
-		String meth = factory.Type().get("spoon.test.prettyprinter.Validation").getMethodsByName("isIdentifier").get(0).toString();
+		String meth = factory.Type().get("spoon.test.prettyprinter.testclasses.Validation").getMethodsByName("isIdentifier").get(0).toString();
 		// the added linebreaks due to line preservation are removed
 		assertFalse(Pattern.compile("^\\s", Pattern.DOTALL).asPredicate().test(meth.toString()));
 

src/test/java/spoon/test/prettyprinter/PrinterTest.java

@@ -39,7 +39,7 @@ public void testPrettyPrinter() throws Exception {
 				SpoonResourceHelper
 						.resources(
 								"./src/test/java/spoon/test/annotation/testclasses/PersistenceProperty.java",
-								"./src/test/java/spoon/test/prettyprinter/Validation.java"))
+								"./src/test/java/spoon/test/prettyprinter/testclasses/Validation.java"))
 				.build();
 		for (CtType<?> t : factory.Type().getAll()) {
 			t.toString();

src/test/java/spoon/test/prettyprinter/Validation.java → src/test/java/spoon/test/prettyprinter/testclasses/Validation.java

@@ -15,7 +15,7 @@
  * limitations under the License.
  */
 
-package spoon.test.prettyprinter;
+package spoon.test.prettyprinter.testclasses;
 
 import java.security.AccessController;
 import java.security.PrivilegedAction;