FOP-3071: Write mediummap before pagegroup

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@1900949 13f79535-47bb-0310-9956-ffa450edef68

fop-core/src/main/java/org/apache/fop/afp/modca/InvokeMediumMap.java

 import java.io.IOException;
 import java.io.OutputStream;
 
+import org.apache.fop.afp.Completable;
 import org.apache.fop.afp.util.BinaryUtils;
 
 /**
  * the document's current environment. The Medium Map's effect on current environment
  * parameter values lasts until a new Medium Map is invoked.
  */
-public class InvokeMediumMap extends AbstractNamedAFPObject {
+public class InvokeMediumMap extends AbstractNamedAFPObject implements Completable {
 
     /**
      * Constructor for the Invoke Medium Map
 
         os.write(data);
     }
+
+    public void setComplete(boolean complete) {
+    }
+
+    public boolean isComplete() {
+        return true;
+    }
 }

fop-core/src/test/java/org/apache/fop/afp/DataStreamTestCase.java

         Assert.assertEquals((byte)data.read(), InvokeMediumMap.Type.MAP);
         Assert.assertEquals((byte)data.read(), InvokeMediumMap.Category.MEDIUM_MAP);
     }
+
+    @Test
+    public void testMediumMapBeforePageGroupOnDocument() throws Exception {
+        ds = new DataStream(new Factory(), paintState, outStream);
+        ds.startDocument();
+        ds.createInvokeMediumMap("test");
+        ds.startPageGroup();
+        ds.startPage(1, 1, 0, 1, 1);
+        ds.endPage();
+        ds.endPageGroup();
+        ds.endDocument();
+        ByteArrayInputStream data = new ByteArrayInputStream(outStream.toByteArray());
+        data.skip(21);
+        Assert.assertEquals((byte)data.read(), InvokeMediumMap.Type.MAP);
+        Assert.assertEquals((byte)data.read(), InvokeMediumMap.Category.MEDIUM_MAP);
+    }
 }