From bb0b9f9c80acbff42c29a4eef65ec2d97e7e6ce9 Mon Sep 17 00:00:00 2001
From: nicksavers <nicksavers@gmail.com>
Date: Thu, 26 Jun 2014 19:54:56 +0200
Subject: [PATCH] Add ByteArrayWrapperTest

---
 .../org/ethereum/db/ByteArrayWrapperTest.java | 141 ++++++++++++++++++
 1 file changed, 141 insertions(+)
 create mode 100644 ethereumj-core/src/test/java/org/ethereum/db/ByteArrayWrapperTest.java

diff --git a/ethereumj-core/src/test/java/org/ethereum/db/ByteArrayWrapperTest.java b/ethereumj-core/src/test/java/org/ethereum/db/ByteArrayWrapperTest.java
new file mode 100644
index 00000000..6eb1903a
--- /dev/null
+++ b/ethereumj-core/src/test/java/org/ethereum/db/ByteArrayWrapperTest.java
@@ -0,0 +1,141 @@
+package org.ethereum.db;
+
+import static org.junit.Assert.*;
+
+import java.util.Arrays;
+import java.util.Comparator;
+
+import org.ethereum.util.FastByteComparisons;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.spongycastle.util.encoders.Hex;
+
+import com.google.common.primitives.UnsignedBytes;
+
+public class ByteArrayWrapperTest {
+
+	static ByteArrayWrapper wrapper1;
+	static ByteArrayWrapper wrapper2;
+	static ByteArrayWrapper wrapper3;
+	static ByteArrayWrapper wrapper4;
+	
+	@BeforeClass
+	public static void loadByteArrays() {
+		
+		String block = "f9072df8d3a077ef4fdaf389dca53236bcf7f72698e154eab2828f86fbc4fc6c"
+				+ "d9225d285c89a01dcc4de8dec75d7aab85b567b6ccd41ad312451b948a7413f0"
+				+ "a142fd40d493479476f5eabe4b342ee56b8ceba6ab2a770c3e2198e7a0faa0ca"
+				+ "43105f667dceb168eb4e0cdc98ef28a9da5c381edef70d843207601719a06785"
+				+ "f3860460b2aa29122698e83a5151b270e82532c1663e89e3df8c5445b8ca833f"
+				+ "f000018609184e72a000830f3e6f8227d2845387c58f80a00000000000000000"
+				+ "0000000000000000000000000000000094148d7738f78c04f90654f8c6f8a080"
+				+ "8609184e72a00082271094000000000000000000000000000000000000000080"
+				+ "b83a33604557602a5160106000396000f200604556330e0f602a59366000530a"
+				+ "0f602a596020600053013560005335576040600053016000546009581ca033a6"
+				+ "bfa5eb2f4b63f1b98bed9a987d096d32e56deecb050367c84955508f5365a015"
+				+ "034e7574ec073f0c448aac1d9f844387610dfef5342834b6825fbc35df5913a0"
+				+ "ee258e73d41ada73d8d6071ba7d236fbbe24fcfb9627fbd4310e24ffd87b961a"
+				+ "8203e9f90194f9016d018609184e72a000822710940000000000000000000000"
+				+ "00000000000000000080b901067f4e616d655265670000000000000000000000"
+				+ "00000000000000000000000000003057307f4e616d6552656700000000000000"
+				+ "000000000000000000000000000000000000577f436f6e666967000000000000"
+				+ "000000000000000000000000000000000000000073ccdeac59d35627b7de0933"
+				+ "2e819d5159e7bb72505773ccdeac59d35627b7de09332e819d5159e7bb72507f"
+				+ "436f6e6669670000000000000000000000000000000000000000000000000000"
+				+ "57336045576041516100c56000396000f20036602259604556330e0f600f5933"
+				+ "ff33560f601e5960003356576000335700604158600035560f602b590033560f"
+				+ "603659600033565733600035576000353357001ca0f3c527e484ea5546189979"
+				+ "c767b69aa9f1ad5a6f4b6077d4bccf5142723a67c9a069a4a29a2a315102fcd0"
+				+ "822d39ad696a6d7988c993bb2b911cc2a78bb8902d91a01ebe4782ea3ed224cc"
+				+ "bb777f5de9ee7b5bbb282ac08f7fa0ef95d3d1c1c6d1a1820ef7f8ccf8a60286"
+				+ "09184e72a00082271094ccdeac59d35627b7de09332e819d5159e7bb725080b8"
+				+ "4000000000000000000000000000000000000000000000000000000000000000"
+				+ "000000000000000000000000002d0aceee7e5ab874e22ccf8d1a649f59106d74"
+				+ "e81ba095ad45bf574c080e4d72da2cfd3dbe06cc814c1c662b5f74561f13e1e7"
+				+ "5058f2a057745a3db5482bccb5db462922b074f4b79244c4b1fa811ed094d728"
+				+ "e7b6da92a08599ea5d6cb6b9ad3311f0d82a3337125e05f4a82b9b0556cb3776"
+				+ "a6e1a02f8782132df8abf885038609184e72a000822710942d0aceee7e5ab874"
+				+ "e22ccf8d1a649f59106d74e880a0476176000000000000000000000000000000"
+				+ "00000000000000000000000000001ca09b5fdabd54ebc284249d2d2df6d43875"
+				+ "cb86c52bd2bac196d4f064c8ade054f2a07b33f5c8b277a408ec38d2457441d2"
+				+ "af32e55681c8ecb28eef3d2a152e8db5a9a0227a67fceb1bf4ddd31a7047e24b"
+				+ "e93c947ab3b539471555bb3509ed6e393c8e82178df90277f90250048609184e"
+				+ "72a0008246dd94000000000000000000000000000000000000000080b901e961"
+				+ "010033577f476176436f696e0000000000000000000000000000000000000000"
+				+ "000000000060005460006000600760006000732d0aceee7e5ab874e22ccf8d1a"
+				+ "649f59106d74e860645c03f150436000576000600157620f424060025761017d"
+				+ "5161006c6000396000f2006020360e0f61013f59602060006000374360205460"
+				+ "0056600054602056602054437f6e000000000000000000000000000000000000"
+				+ "00000000000000000000000000560e0f0f61008059437f6e0000000000000000"
+				+ "0000000000000000000000000000000000000000000000576000602054610400"
+				+ "60005304600053036000547f6400000000000000000000000000000000000000"
+				+ "0000000000000000000000005660016000030460406000200a0f61013e596001"
+				+ "60205301602054600a6020530b0f6100f45961040060005304600053017f6400"
+				+ "0000000000000000000000000000000000000000000000000000000000005760"
+				+ "20537f6900000000000000000000000000000000000000000000000000000000"
+				+ "000000576000537f640000000000000000000000000000000000000000000000"
+				+ "000000000000000057006040360e0f0f61014a59003356604054600035566060"
+				+ "546020356080546080536040530a0f6101695900608053604053033357608053"
+				+ "60605301600035571ba0190fc7ab634dc497fe1656fde523a4c26926d51a93db"
+				+ "2ba37af8e83c3741225da066ae0ec1217b0ca698a5369d4881e1c4cbde56af99"
+				+ "31ebf9281580a23b659c08a051f947cb2315d0259f55848c630caa10cd91d6e4"
+				+ "4ff8bad7758c65b25e2191308227d2c0";
+		
+		byte[] test1 = Hex.decode(block);
+		byte[] test2 = Hex.decode(block);
+		byte[] test3 = Hex.decode("4ff8bad7758c65b25e2191308227d2c0");
+		byte[] test4 = Hex.decode("");
+		
+		wrapper1 = new ByteArrayWrapper(test1);
+		wrapper2 = new ByteArrayWrapper(test2);
+		wrapper3 = new ByteArrayWrapper(test3);
+		wrapper4 = new ByteArrayWrapper(test4);
+	}
+	
+	@Test
+	public void testEqualsObject() {
+		assertTrue(wrapper1.equals(wrapper2));
+		assertFalse(wrapper1.equals(wrapper3));
+		assertFalse(wrapper1.equals(wrapper4));
+		assertFalse(wrapper1.equals(null));
+		assertFalse(wrapper2.equals(wrapper3));
+	}
+
+	@Test
+	public void testCompareTo() {
+		assertTrue(wrapper1.compareTo(wrapper2) == 0);
+		assertTrue(wrapper1.compareTo(wrapper3) > 1);
+		assertTrue(wrapper1.compareTo(wrapper4) > 1);
+		assertTrue(wrapper2.compareTo(wrapper3) > 1);
+	}
+	
+	@Test
+	public void testEqualsPerformance() {
+		boolean testEnabled = false;
+		
+		if(testEnabled) {
+			final int ITERATIONS = 10000000;
+			long start1 = System.currentTimeMillis();
+			for (int i = 0; i < ITERATIONS; i++) {
+				Comparator<byte[]> comparator = UnsignedBytes
+						.lexicographicalComparator();
+
+				comparator.compare(wrapper1.getData(),
+						wrapper2.getData());
+			}
+			System.out.println(System.currentTimeMillis() - start1 + "ms");
+			
+			long start2 = System.currentTimeMillis();
+			for (int i = 0; i < ITERATIONS; i++) {
+				Arrays.equals(wrapper1.getData(), wrapper2.getData());
+			}
+			System.out.println(System.currentTimeMillis() - start2 + "ms");
+			
+			long start3 = System.currentTimeMillis();
+			for (int i = 0; i < ITERATIONS; i++) {
+				FastByteComparisons.compareTo(wrapper1.getData(), 0, wrapper1.getData().length, wrapper2.getData(), 0, wrapper1.getData().length);
+			}
+			System.out.println(System.currentTimeMillis() - start3 + "ms");
+		}
+	}	
+}