FOP-2744: Allow unmapped flow for repeatable-page-master

git-svn-id: https://svn.apache.org/repos/asf/xmlgraphics/fop/trunk@1810008 13f79535-47bb-0310-9956-ffa450edef68

fop-core/src/main/java/org/apache/fop/layoutmgr/PageSequenceLayoutManager.java

@@ -205,7 +205,8 @@ public class PageSequenceLayoutManager extends AbstractPageSequenceLayoutManager
         String psName = getPageSequence().getMainFlow().getFlowName();
         Region body = newPage.getSimplePageMaster().getRegion(FO_REGION_BODY);
         String name = body.getRegionName();
-        if (strict && !name.equals(psName) && !name.equals(((RegionBody)body).getDefaultRegionName())) {
+        if (strict && !name.equals(psName) && !name.equals(((RegionBody)body).getDefaultRegionName())
+                && getPageSequence().hasPagePositionLast()) {
             throw new RuntimeException(
                     "The flow-name \"" + name + "\" could not be mapped to a region-name in the layout-master-set");
         }

fop-core/src/test/java/org/apache/fop/layoutmgr/PageSequenceLayoutManagerTestCase.java

@@ -127,6 +127,7 @@ public class PageSequenceLayoutManagerTestCase {
 
         when(flow.getFlowName()).thenReturn(MAIN_FLOW_NAME);
         when(pseq.getRoot()).thenReturn(root);
+        when(pseq.hasPagePositionLast()).thenReturn(true);
         when(pseq.getMainFlow()).thenReturn(flow);
 
         PageSequenceLayoutManager pageSequenceLayoutManager = new PageSequenceLayoutManager(ath, pseq) {

fop/test/layoutengine/standard-testcases/simple-page-master_unmapped_flow-name_2.xml

@@ -0,0 +1,56 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one or more
+  contributor license agreements.  See the NOTICE file distributed with
+  this work for additional information regarding copyright ownership.
+  The ASF licenses this file to You under the Apache License, Version 2.0
+  (the "License"); you may not use this file except in compliance with
+  the License.  You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+-->
+<!-- $Id$ -->
+<testcase>
+  <info>
+    <p>
+      This test checks that when the region-body@region-name of simple-page-master does not map to
+      the main flow, the PageSequenceLayoutManager treats the generated Page as an empty/blank page.
+    </p>
+  </info>
+  <fo>
+    <fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format" xmlns:fox="http://xmlgraphics.apache.org/fop/extensions">
+      <fo:layout-master-set>
+        <fo:simple-page-master master-name="CoverFront" page-width="8.5in" page-height="11in">
+          <fo:region-body region-name="CoverPageBody"/>
+        </fo:simple-page-master>
+        <fo:simple-page-master master-name="CoverBack" page-width="8.5in" page-height="11in">
+          <fo:region-body region-name="CoverPageBody"/>
+        </fo:simple-page-master>
+        <fo:simple-page-master master-name="Invoice_First_Page" page-width="8.5in" page-height="11in">
+          <fo:region-body region-name="PageBody"/>
+        </fo:simple-page-master>
+        <fo:page-sequence-master master-name="Cover">
+          <fo:repeatable-page-master-reference maximum-repeats="1" master-reference="CoverFront"/>
+          <fo:repeatable-page-master-reference maximum-repeats="1" master-reference="CoverBack"/>
+          <fo:repeatable-page-master-reference maximum-repeats="1" master-reference="Invoice_First_Page"/>
+        </fo:page-sequence-master>
+      </fo:layout-master-set>
+      <fo:page-sequence master-reference="Cover">
+        <fo:flow flow-name="PageBody">
+          <fo:block>test</fo:block>
+        </fo:flow>
+      </fo:page-sequence>
+    </fo:root>
+  </fo>
+  <checks>
+    <eval expected="CoverPageBody" xpath="//pageViewport[1]//regionBody/@name"/>
+    <eval expected="CoverPageBody" xpath="//pageViewport[2]//regionBody/@name"/>
+    <eval expected="PageBody" xpath="//pageViewport[3]//regionBody/@name"/>
+  </checks>
+</testcase>