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Diffstat (limited to 'org.eclipse.jgit.test/tst/org/eclipse/jgit/util/LRUMapTest.java')
| -rw-r--r-- | org.eclipse.jgit.test/tst/org/eclipse/jgit/util/LRUMapTest.java | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/util/LRUMapTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/util/LRUMapTest.java new file mode 100644 index 0000000000..da59533aeb --- /dev/null +++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/util/LRUMapTest.java @@ -0,0 +1,78 @@ +/* + * Copyright (C) 2018, Konrad Windszus <konrad_w@gmx.de> + * 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 + * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, + * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +package org.eclipse.jgit.util; + +import java.util.LinkedHashMap; +import java.util.Map; + +import org.hamcrest.collection.IsIterableContainingInOrder; +import org.junit.Assert; +import org.junit.Test; + +public class LRUMapTest { + + @SuppressWarnings("boxing") + @Test + public void testLRUEntriesAreEvicted() { + Map<Integer, Integer> map = new LRUMap<>(3, 3); + for (int i = 0; i < 3; i++) { + map.put(i, i); + } + // access the last ones + map.get(2); + map.get(0); + + // put another one which exceeds the limit (entry with key "1" is + // evicted) + map.put(3, 3); + + Map<Integer, Integer> expectedMap = new LinkedHashMap<>(); + expectedMap.put(2, 2); + expectedMap.put(0, 0); + expectedMap.put(3, 3); + + Assert.assertThat(map.entrySet(), + IsIterableContainingInOrder + .contains(expectedMap.entrySet().toArray())); + } +} |