SPR-6788 - The class MediaType has a natural ordering that is inconsistent...

SPR-6788 - The class MediaType has a natural ordering that is inconsistent with equals, which is generally recommended or should otherwise at least be indicated in the javadoc

org.springframework.web/src/test/java/org/springframework/http/MediaTypeTests.java

@@ -101,11 +101,16 @@ public class MediaTypeTests {
 		MediaType.parseMediaType("audio/basic)");
 	}
 
+	@Test(expected = IllegalArgumentException.class)
+	public void parseMediaTypeEmptyParameterAttribute() {
+		MediaType.parseMediaType("audio/*;=value");
+	}
+
 	@Test(expected = IllegalArgumentException.class)
 	public void parseMediaTypeEmptyParameterValue() {
 		MediaType.parseMediaType("audio/*;attr=");
 	}
-	
+
 	@Test(expected = IllegalArgumentException.class)
 	public void parseMediaTypeIllegalParameterAttribute() {
 		MediaType.parseMediaType("audio/*;attr<=value");