/*
    * Copyright (C) 2012, Christian Halstrick <christian.halstrick@sap.com>
    * and other copyright owners as documented in the project's IP log.
    *
    * This program and the accompanying materials are made available
    * under the terms of the Eclipse Distribution License v1.0 which
    * accompanies this distribution, is reproduced below, and is
    * available at http://www.eclipse.org/org/documents/edl-v10.php
    *
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or
   * without modification, are permitted provided that the following
   * conditions are met:
   *
   * - Redistributions of source code must retain the above copyright
   *   notice, this list of conditions and the following disclaimer.
   *
   * - Redistributions in binary form must reproduce the above
   *   copyright notice, this list of conditions and the following
   *   disclaimer in the documentation and/or other materials provided
   *   with the distribution.
   *
   * - Neither the name of the Eclipse Foundation, Inc. nor the
   *   names of its contributors may be used to endorse or promote
   *   products derived from this software without specific prior
   *   written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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  package org.eclipse.jgit.internal.storage.file;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertFalse;
  import static org.junit.Assert.assertTrue;
  
  import java.util.Collections;
  import java.util.Date;
  
  import org.eclipse.jgit.junit.TestRepository.BranchBuilder;
  import org.eclipse.jgit.lib.ObjectId;
  import org.eclipse.jgit.revwalk.RevBlob;
  import org.eclipse.jgit.revwalk.RevCommit;
  import org.eclipse.jgit.revwalk.RevTree;
  import org.junit.Test;
  
  public class GcPruneNonReferencedTest extends GcTestCase {
  	@Test
  	public void nonReferencedNonExpiredObject_notPruned() throws Exception {
  		RevBlob a = tr.blob("a");
  		gc.setExpire(new Date(lastModified(a)));
  		gc.prune(Collections.<ObjectId> emptySet());
  		assertTrue(repo.hasObject(a));
  	}
  
  	@Test
  	public void nonReferencedExpiredObject_pruned() throws Exception {
  		RevBlob a = tr.blob("a");
  		gc.setExpireAgeMillis(0);
  		fsTick();
  		gc.prune(Collections.<ObjectId> emptySet());
  		assertFalse(repo.hasObject(a));
  	}
  
  	@Test
  	public void nonReferencedExpiredObjectTree_pruned() throws Exception {
  		RevBlob a = tr.blob("a");
  		RevTree t = tr.tree(tr.file("a", a));
  		gc.setExpireAgeMillis(0);
  		fsTick();
  		gc.prune(Collections.<ObjectId> emptySet());
  		assertFalse(repo.hasObject(t));
  		assertFalse(repo.hasObject(a));
  	}
  
  	@Test
  	public void nonReferencedObjects_onlyExpiredPruned() throws Exception {
  		RevBlob a = tr.blob("a");
  		gc.setExpire(new Date(lastModified(a) + 1));
  
  		fsTick();
  		RevBlob b = tr.blob("b");
  
  		gc.prune(Collections.<ObjectId> emptySet());
  		assertFalse(repo.hasObject(a));
  		assertTrue(repo.hasObject(b));
 	}
 
 	@Test
 	public void testPackCommitsAndLooseOneWithPruneNow() throws Exception {
 		BranchBuilder bb = tr.branch("refs/heads/master");
 		RevCommit first = bb.commit().add("A", "A").add("B", "B").create();
 		bb.commit().add("A", "A2").add("B", "B2").create();
 		tr.update("refs/heads/master", first);
 
 		stats = gc.getStatistics();
 		assertEquals(8, stats.numberOfLooseObjects);
 		assertEquals(0, stats.numberOfPackedObjects);
 		gc.setExpireAgeMillis(0);
 		fsTick();
 		gc.gc();
 		stats = gc.getStatistics();
 		assertEquals(0, stats.numberOfLooseObjects);
 		assertEquals(8, stats.numberOfPackedObjects);
 		assertEquals(2, stats.numberOfPackFiles);
 	}
 }