Add TestGroup.CUSTOM_COMPILATION

Previously building with JDK > 1.8 b88 caused test failures due to errors
with custom compilers like Jibx and Jasper reports.

This commit adds a new TestGroup named CUSTOM_COMPILATION that allows the
CI server to continue to run these tests but allow committers to ignore
these tests.

spring-core/src/test/java/org/springframework/tests/TestGroup.java

@@ -59,8 +59,14 @@ public enum TestGroup {
 	/**
 	 * Tests that should only be run on the continuous integration server.
 	 */
-	CI;
+	CI,
 
+	/**
+	 * Tests that require custom compilation beyond that of the standard JDK. This helps to
+	 * allow running tests that will otherwise fail when using JDK >  1.8 b88. See
+	 * <a href="https://jira.springsource.org/browse/SPR-10558">SPR-10558</a>
+	 */
+	CUSTOM_COMPILATION;
 
 	/**
 	 * Parse the specified comma separates string of groups.

spring-core/src/test/java/org/springframework/tests/TestGroupTests.java

@@ -64,7 +64,7 @@ public class TestGroupTests {
 		thrown.expect(IllegalArgumentException.class);
 		thrown.expectMessage("Unable to find test group 'missing' when parsing " +
 				"testGroups value: 'performance, missing'. Available groups include: " +
-				"[LONG_RUNNING,PERFORMANCE,JMXMP,CI]");
+				"[LONG_RUNNING,PERFORMANCE,JMXMP,CI,CUSTOM_COMPILATION]");
 		TestGroup.parse("performance, missing");
 	}
 

spring-oxm/src/test/java/org/springframework/oxm/jibx/JibxMarshallerTests.java

@@ -20,11 +20,13 @@ import java.io.StringWriter;
 import javax.xml.transform.stream.StreamResult;
 
 import org.custommonkey.xmlunit.XMLUnit;
-import org.junit.Ignore;
+import org.junit.BeforeClass;
 import org.junit.Test;
 
 import org.springframework.oxm.AbstractMarshallerTests;
 import org.springframework.oxm.Marshaller;
+import org.springframework.tests.Assume;
+import org.springframework.tests.TestGroup;
 
 import static org.custommonkey.xmlunit.XMLAssert.*;
 import static org.junit.Assert.assertFalse;
@@ -36,9 +38,13 @@ import static org.junit.Assert.assertTrue;
  * NOTE: These tests fail under Eclipse/IDEA because JiBX binding does
  * not occur by default. The Gradle build should succeed, however.
  */
-@Ignore("INCOMPATIBLE WITH OPENJDK 8 b89+")
 public class JibxMarshallerTests extends AbstractMarshallerTests {
 
+	@BeforeClass
+	public static void compilerAssumptions() {
+		Assume.group(TestGroup.CUSTOM_COMPILATION);
+	}
+
 	@Override
 	protected Marshaller createMarshaller() throws Exception {
 		JibxMarshaller marshaller = new JibxMarshaller();

spring-oxm/src/test/java/org/springframework/oxm/jibx/JibxUnmarshallerTests.java

@@ -20,10 +20,13 @@ import java.io.ByteArrayInputStream;
 
 import javax.xml.transform.stream.StreamSource;
 
+import org.junit.BeforeClass;
 import org.junit.Ignore;
 import org.junit.Test;
 import org.springframework.oxm.AbstractUnmarshallerTests;
 import org.springframework.oxm.Unmarshaller;
+import org.springframework.tests.Assume;
+import org.springframework.tests.TestGroup;
 
 import static org.junit.Assert.*;
 
@@ -33,13 +36,17 @@ import static org.junit.Assert.*;
  * NOTE: These tests fail under Eclipse/IDEA because JiBX binding does
  * not occur by default. The Gradle build should succeed, however.
  */
-@Ignore("INCOMPATIBLE WITH OPENJDK 8 b89+")
 public class JibxUnmarshallerTests extends AbstractUnmarshallerTests {
 
 	protected static final String INPUT_STRING_WITH_SPECIAL_CHARACTERS =
 			"<tns:flights xmlns:tns=\"http://samples.springframework.org/flight\">" +
 					"<tns:flight><tns:airline>Air Libert\u00e9</tns:airline><tns:number>42</tns:number></tns:flight></tns:flights>";
 
+	@BeforeClass
+	public static void compilerAssumptions() {
+		Assume.group(TestGroup.CUSTOM_COMPILATION);
+	}
+
 	@Override
 	protected Unmarshaller createUnmarshaller() throws Exception {
 		JibxMarshaller unmarshaller = new JibxMarshaller();

spring-webmvc/src/test/java/org/springframework/web/servlet/view/jasperreports/AbstractJasperReportsTests.java

@@ -29,6 +29,7 @@ import org.junit.BeforeClass;
 import org.springframework.mock.web.test.MockHttpServletRequest;
 import org.springframework.mock.web.test.MockHttpServletResponse;
 import org.springframework.tests.Assume;
+import org.springframework.tests.TestGroup;
 import org.springframework.ui.jasperreports.PersonBean;
 import org.springframework.ui.jasperreports.ProductBean;
 import org.springframework.util.ClassUtils;
@@ -59,6 +60,7 @@ public abstract class AbstractJasperReportsTests {
 	@BeforeClass
 	public static void assumptions() {
 		Assume.canLoadNativeDirFonts();
+		Assume.group(TestGroup.CUSTOM_COMPILATION);
 	}
 
 	@Before