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    * 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.
   */
  package org.apache.maven.scm.tck.command.branch;
  
  import java.io.File;
  import java.io.Writer;
  import java.nio.file.Files;
  import java.nio.file.Path;
  
  import org.apache.maven.scm.CommandParameter;
  import org.apache.maven.scm.CommandParameters;
  import org.apache.maven.scm.ScmBranch;
  import org.apache.maven.scm.ScmFileSet;
  import org.apache.maven.scm.ScmTckTestCase;
  import org.apache.maven.scm.command.branch.BranchScmResult;
  import org.apache.maven.scm.command.checkin.CheckInScmResult;
  import org.apache.maven.scm.command.checkout.CheckOutScmResult;
  import org.codehaus.plexus.util.FileUtils;
  import org.junit.Test;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertFalse;
  
  /**
   * This test tests the branch command.
   *
   * @author <a href="mailto:evenisse@apache.org">Emmanuel Venisse</a>
   */
  public abstract class BranchCommandTckTest extends ScmTckTestCase {
  
      protected String getBranch() {
          return "test-branch";
      }
  
      @Test
      public void testBranchCommandTest() throws Exception {
          String branch = getBranch();
  
          @SuppressWarnings("deprecation")
          BranchScmResult branchResult = getScmManager()
                  .getProviderByUrl(getScmUrl())
                  .branch(getScmRepository(), new ScmFileSet(getWorkingCopy()), branch);
  
          assertResultIsSuccess(branchResult);
  
          // see https://issues.apache.org/jira/browse/SCM-754
          // assertEquals( "check all 4 files branched", 4, branchResult.getBranchedFiles().size() );
  
          File readmeTxt = new File(getWorkingCopy(), "readme.txt");
  
          assertEquals("check readme.txt contents", "/readme.txt", FileUtils.fileRead(readmeTxt));
  
          this.edit(getWorkingCopy(), "readme.txt", null, getScmRepository());
          changeReadmeTxt(readmeTxt.toPath());
  
          CommandParameters commandParameters = new CommandParameters();
          commandParameters.setString(CommandParameter.MESSAGE, "commit message");
  
          CheckInScmResult checkinResult =
                  getScmManager().checkIn(getScmRepository(), new ScmFileSet(getWorkingCopy()), commandParameters);
  
          assertResultIsSuccess(checkinResult);
  
          CheckOutScmResult checkoutResult =
                  getScmManager().checkOut(getScmRepository(), new ScmFileSet(getAssertionCopy()));
  
          assertResultIsSuccess(checkoutResult);
  
          readmeTxt = new File(getAssertionCopy(), "readme.txt");
  
          assertEquals("check readme.txt contents", "changed file", FileUtils.fileRead(readmeTxt));
  
          deleteDirectory(getAssertionCopy());
  
          assertFalse("check previous assertion copy deleted", getAssertionCopy().exists());
  
          checkoutResult = getScmManager()
                  .getProviderByUrl(getScmUrl())
                  .checkOut(getScmRepository(), new ScmFileSet(getAssertionCopy()), new ScmBranch(branch));
  
          assertResultIsSuccess(checkoutResult);
  
          assertEquals(
                 "check readme.txt contents is from branched version", "/readme.txt", FileUtils.fileRead(readmeTxt));
     }
 
     private void changeReadmeTxt(Path readmeTxt) throws Exception {
         try (Writer output = Files.newBufferedWriter(readmeTxt)) {
             output.write("changed file");
         }
     }
 }