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      1 /*
      2  * Copyright (C) 2011 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.dx.merge;
     18 
     19 import com.android.dex.Dex;
     20 import com.android.dex.DexException;
     21 import java.io.IOException;
     22 import junit.framework.TestCase;
     23 
     24 public final class MergeConflictTest extends TestCase {
     25 
     26     public void testMergeConflict() throws IOException {
     27         Dex a = resourceToDexBuffer("/testdata/A.dex");
     28         Dex b = resourceToDexBuffer("/testdata/B.dex");
     29 
     30         // a and b don't overlap; this should succeed
     31         Dex ab = new DexMerger(new Dex[]{a, b}, CollisionPolicy.FAIL).merge();
     32 
     33         // a and ab overlap; this should fail
     34         DexMerger dexMerger = new DexMerger(new Dex[]{a, ab}, CollisionPolicy.FAIL);
     35         try {
     36             dexMerger.merge();
     37             fail();
     38         } catch (DexException expected) {
     39             assertEquals("Multiple dex files define Ltestdata/A;", expected.getMessage());
     40         }
     41     }
     42 
     43     private Dex resourceToDexBuffer(String resource) throws IOException {
     44         return new Dex(getClass().getResourceAsStream(resource));
     45     }
     46 }
     47