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authorErich Schubert <erich@debian.org>2016-02-13 17:05:40 +0100
committerAndrej Shadura <andrewsh@debian.org>2019-03-09 22:30:47 +0000
commitdefdc6d2d24cb1cefca77aa63ca6c436a8f3672c (patch)
treea017235849736e0a0ea8a2b28de23f46dc47b082 /elki/src/test/java/de/lmu/ifi/dbs/elki/persistent/OnDiskArrayTest.java
parentaee1a6e43bd1a264226de31eadf10003c46d47c6 (diff)
parent0a055548ae9f9d5c639bb29ca32e0fd88de37c1d (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-xelki/src/test/java/de/lmu/ifi/dbs/elki/persistent/OnDiskArrayTest.java121
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
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--- /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);
+ }
+} \ No newline at end of file