From: David ‘Bombe’ Roden <bombe@pterodactylus.net>
Date: Mon, 3 Jun 2013 20:26:28 +0000 (+0200)
Subject: Add test case for RememberingInputStream.
X-Git-Url: https://git.pterodactylus.net/?a=commitdiff_plain;h=a9413620afc4f9042f7c7c1498ae6c7e4307c01a;p=sonitus.git

Add test case for RememberingInputStream.
---

diff --git a/src/test/java/net/pterodactylus/sonitus/io/RememberingInputStreamTest.java b/src/test/java/net/pterodactylus/sonitus/io/RememberingInputStreamTest.java
new file mode 100644
index 0000000..05104bb
--- /dev/null
+++ b/src/test/java/net/pterodactylus/sonitus/io/RememberingInputStreamTest.java
@@ -0,0 +1,88 @@
+/*
+ * Sonitus - RememberingInputStreamTest.java - Copyright © 2013 David Roden
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package net.pterodactylus.sonitus.io;
+
+import static org.hamcrest.CoreMatchers.is;
+import static org.junit.Assert.assertThat;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Arrays;
+import java.util.Random;
+
+import com.google.common.io.ByteStreams;
+import org.testng.annotations.Test;
+
+/**
+ * Test case for {@link RememberingInputStream}.
+ *
+ * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
+ */
+public class RememberingInputStreamTest {
+
+	/**
+	 * Tests {@link RememberingInputStream#remembered()}.
+	 *
+	 * @throws IOException
+	 * 		if an I/O error occurs
+	 */
+	@Test
+	public void test() throws IOException {
+		RememberingInputStream rememberingInputStream;
+		byte[] randomData = generateData(System.currentTimeMillis(), 1048576);
+		InputStream inputStream = new ByteArrayInputStream(randomData);
+		byte[] readBytes;
+
+		rememberingInputStream = new RememberingInputStream(inputStream);
+		readBytes = new byte[524288];
+		ByteStreams.readFully(rememberingInputStream, readBytes);
+		assertThat(readBytes, is(Arrays.copyOfRange(randomData, 0, 524288)));
+
+		rememberingInputStream = new RememberingInputStream(rememberingInputStream.remembered());
+		readBytes = new byte[131072];
+		ByteStreams.readFully(rememberingInputStream, readBytes);
+		assertThat(readBytes, is(Arrays.copyOfRange(randomData, 0, 131072)));
+
+		rememberingInputStream = new RememberingInputStream(rememberingInputStream.remembered());
+		readBytes = new byte[1048576];
+		ByteStreams.readFully(rememberingInputStream, readBytes);
+		assertThat(readBytes, is(Arrays.copyOfRange(randomData, 0, 1048576)));
+	}
+
+	//
+	// PRIVATE METHODS
+	//
+
+	/**
+	 * Generates random data.
+	 *
+	 * @param seed
+	 * 		The seed for the random number generator
+	 * @param length
+	 * 		The length of the data to generate
+	 * @return The generated random data
+	 */
+	private byte[] generateData(long seed, int length) {
+		Random random = new Random(seed);
+		byte[] buffer = new byte[length];
+		random.nextBytes(buffer);
+		return buffer;
+	}
+
+}