Change to how "best block" is determined.

src/test/java/org/qora/test/ByteArrayTests.java

@@ -0,0 +1,66 @@
+package org.qora.test;
+
+import static org.junit.Assert.*;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Random;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.qora.utils.ByteArray;
+
+public class ByteArrayTests {
+
+	private static List<byte[]> testValues;
+
+	@Before
+	public void createTestValues() {
+		Random random = new Random();
+
+		testValues = new ArrayList<>();
+		for (int i = 0; i < 5; ++i) {
+			byte[] testValue = new byte[32];
+			random.nextBytes(testValue);
+			testValues.add(testValue);
+		}
+	}
+
+	public void fillMap(Map<ByteArray, String> map) {
+		for (byte[] testValue : testValues)
+			map.put(new ByteArray(testValue), String.valueOf(map.size()));
+	}
+
+	@Test
+	public void testByteArray() {
+		// Create two objects, which will have different references, but same content.
+		byte[] testValue = testValues.get(0);
+		ByteArray ba1 = new ByteArray(testValue);
+		ByteArray ba2 = new ByteArray(testValue);
+
+		// Confirm JVM-assigned references are different
+		assertNotSame(ba1, ba2);
+
+		// Confirm "equals" works as intended
+		assertTrue("equals did not return true", ba1.equals(ba2));
+		assertEquals("ba1 not equal to ba2", ba1, ba2);
+
+		// Confirm "hashCode" results match
+		assertEquals("hashCodes do not match", ba1.hashCode(), ba2.hashCode());
+	}
+
+	@Test
+	public void testByteArrayMap() {
+		Map<ByteArray, String> testMap = new HashMap<>();
+		fillMap(testMap);
+
+		// Create new ByteArray object with an existing value.
+		ByteArray ba = new ByteArray(testValues.get(3));
+
+		// Confirm object can be found in map
+		assertTrue("ByteArray not found in map", testMap.containsKey(ba));
+	}
+
+}