diff options
author | Erich Schubert <erich@debian.org> | 2016-02-13 17:05:40 +0100 |
---|---|---|
committer | Andrej Shadura <andrewsh@debian.org> | 2019-03-09 22:30:47 +0000 |
commit | defdc6d2d24cb1cefca77aa63ca6c436a8f3672c (patch) | |
tree | a017235849736e0a0ea8a2b28de23f46dc47b082 /elki/src/test/java/de/lmu/ifi/dbs/elki/persistent/OnDiskArrayTest.java | |
parent | aee1a6e43bd1a264226de31eadf10003c46d47c6 (diff) | |
parent | 0a055548ae9f9d5c639bb29ca32e0fd88de37c1d (diff) |
Import Debian changes 0.7.1-1
elki (0.7.1-1) unstable; urgency=low
* New upstream release (mostly bug fixes)
* Drop patches included upstream
* Build-dep on default-jdk instead of openjdk7-jdk (Closes: #814163)
Diffstat (limited to 'elki/src/test/java/de/lmu/ifi/dbs/elki/persistent/OnDiskArrayTest.java')
-rwxr-xr-x | elki/src/test/java/de/lmu/ifi/dbs/elki/persistent/OnDiskArrayTest.java | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/elki/src/test/java/de/lmu/ifi/dbs/elki/persistent/OnDiskArrayTest.java b/elki/src/test/java/de/lmu/ifi/dbs/elki/persistent/OnDiskArrayTest.java new file mode 100755 index 00000000..a67ad5e6 --- /dev/null +++ b/elki/src/test/java/de/lmu/ifi/dbs/elki/persistent/OnDiskArrayTest.java @@ -0,0 +1,121 @@ +package de.lmu.ifi.dbs.elki.persistent; + +/* + This file is part of ELKI: + Environment for Developing KDD-Applications Supported by Index-Structures + + Copyright (C) 2015 + Ludwig-Maximilians-Universität München + Lehr- und Forschungseinheit für Datenbanksysteme + ELKI Development Team + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU Affero General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU Affero General Public License for more details. + + You should have received a copy of the GNU Affero General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +import java.io.File; +import java.io.IOException; +import java.nio.ByteBuffer; + +import org.junit.After; +import org.junit.Assert; +import org.junit.Before; +import org.junit.Test; + +import de.lmu.ifi.dbs.elki.JUnit4Test; + +/** + * Test to validate proper OnDiskArray operation. + * + * @author Erich Schubert + * @since 0.2 + */ +// TODO: also test with a static sample file. +public class OnDiskArrayTest implements JUnit4Test { + File file = new File("OnDiskArrayTestFile.test.dat"); + + /** + * Check that we don't overwrite any file. + * + * @throws Exception on errors. + */ + @Before + public void safetyCheck() throws Exception { + if(file.exists()) { + Assert.fail("Could not run test - test file already exists."); + } + } + + /** + * Clean up afterwards + * + * @throws Exception on errors. + */ + @After + public void cleanup() throws Exception { + if(file != null && file.exists()) { + if(!file.delete()) { + Assert.fail("Error cleaning up: can't remove test file."); + } + } + } + + /** + * Test the OnDiskArray class. + * + * @throws IOException on errors. + */ + @Test + public void dotestOnDiskArray() throws IOException { + final int extraheadersize = 2; + final int recsize = 3; + int numrec = 4; + // Only applicable to the version we are testing. + final int ODR_HEADER_SIZE = 4 * 4; + OnDiskArray array = new OnDiskArray(file, 1, extraheadersize, recsize, numrec); + byte[] header = { 42, 23 }; + array.getExtraHeader().put(header); + byte[] record1 = { 31, 41, 59 }; + byte[] record2 = { 26, 53, 58 }; + array.getRecordBuffer(0).put(record1); + array.getRecordBuffer(1).put(record2); + array.getRecordBuffer(2).put(record2); + array.getRecordBuffer(3).put(record1); + array.resizeFile(5); + numrec = 5; + array.getRecordBuffer(4).put(record1); + array.close(); + + // validate file size + Assert.assertEquals("File size doesn't match.", ODR_HEADER_SIZE + extraheadersize + recsize * numrec, file.length()); + + OnDiskArray roarray = new OnDiskArray(file, 1, 2, 3, false); + Assert.assertEquals("Number of records incorrect.", numrec, roarray.getNumRecords()); + + byte[] buf = new byte[recsize]; + ByteBuffer hbuf = roarray.getExtraHeader(); + for(int i = 0; i < header.length; i++) { + Assert.assertEquals("Header doesn't match.", header[i], hbuf.get()); + } + roarray.getRecordBuffer(0).get(buf); + Assert.assertArrayEquals("Record 0 doesn't match.", record1, buf); + roarray.getRecordBuffer(4).get(buf); + Assert.assertArrayEquals("Record 4 doesn't match.", record1, buf); + roarray.getRecordBuffer(1).get(buf); + Assert.assertArrayEquals("Record 1 doesn't match.", record2, buf); + roarray.getRecordBuffer(2).get(buf); + Assert.assertArrayEquals("Record 2 doesn't match.", record2, buf); + roarray.getRecordBuffer(3).get(buf); + Assert.assertArrayEquals("Record 3 doesn't match.", record1, buf); + } +}
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