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authorBrian S. O'Neill <bronee@gmail.com>2006-10-05 03:54:20 +0000
committerBrian S. O'Neill <bronee@gmail.com>2006-10-05 03:54:20 +0000
commit79cebfadf8703afe9bf28786bc4df1af348c876e (patch)
treefc9e9ae84e444096eb7dfd0bc5639337a2234b94 /src/test/java/com/amazon/carbonado/raw/TestDataEncoding.java
parent1f602d1146ec547a3bf65912a3ba0930dca75eaf (diff)
Moved raw package out of spi package.
Diffstat (limited to 'src/test/java/com/amazon/carbonado/raw/TestDataEncoding.java')
-rw-r--r--src/test/java/com/amazon/carbonado/raw/TestDataEncoding.java515
1 files changed, 515 insertions, 0 deletions
diff --git a/src/test/java/com/amazon/carbonado/raw/TestDataEncoding.java b/src/test/java/com/amazon/carbonado/raw/TestDataEncoding.java
new file mode 100644
index 0000000..bff5820
--- /dev/null
+++ b/src/test/java/com/amazon/carbonado/raw/TestDataEncoding.java
@@ -0,0 +1,515 @@
+/*
+ * Copyright 2006 Amazon Technologies, Inc. or its affiliates.
+ * Amazon, Amazon.com and Carbonado are trademarks or registered trademarks
+ * of Amazon Technologies, Inc. or its affiliates. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.amazon.carbonado.raw;
+
+import java.util.Random;
+
+import junit.framework.TestCase;
+import junit.framework.TestSuite;
+
+/**
+ * Test case for {@link DataEncoder} and {@link DataDecoder}.
+ * <p>
+ * It generates random data values, checks that the decoding produces the
+ * original results, and it checks that the order of the encoded bytes matches
+ * the order of the original data values.
+ *
+ * @author Brian S O'Neill
+ */
+public class TestDataEncoding extends TestCase {
+ private static final int SHORT_TEST = 100;
+ private static final int MEDIUM_TEST = 500;
+ private static final int LONG_TEST = 1000;
+
+ public static void main(String[] args) {
+ junit.textui.TestRunner.run(suite());
+ }
+
+ public static TestSuite suite() {
+ return new TestSuite(TestDataEncoding.class);
+ }
+
+ /**
+ * @return -1, 0, or 1
+ */
+ static int byteArrayCompare(byte[] aa, byte[] ab) {
+ int len = Math.min(aa.length, ab.length);
+ int result = byteArrayCompare(aa, ab, len);
+ if (result == 0 && aa.length != ab.length) {
+ if (aa.length == len) {
+ return -1;
+ }
+ if (ab.length == len) {
+ return 1;
+ }
+ }
+ return result;
+ }
+
+ /**
+ * @return -1, 0, or 1
+ */
+ static int byteArrayCompare(byte[] aa, byte[] ab, int len) {
+ for (int i=0; i<len; i++) {
+ int a = aa[i] & 0xff;
+ int b = ab[i] & 0xff;
+ if (a < b) {
+ return -1;
+ }
+ if (a > b) {
+ return 1;
+ }
+ }
+ return 0;
+ }
+
+ /**
+ * @return -1, 0, or 1
+ */
+ static int byteArrayOrNullCompare(byte[] aa, byte[] ab) {
+ if (aa == null) {
+ if (ab == null) {
+ return 0;
+ } else {
+ return 1;
+ }
+ } else if (ab == null) {
+ return -1;
+ } else {
+ return byteArrayCompare(aa, ab);
+ }
+ }
+
+ /**
+ * @return -1, 0, or 1
+ */
+ static int byteArrayOrNullCompare(byte[] aa, byte[] ab, int len) {
+ if (aa == null) {
+ if (ab == null) {
+ return 0;
+ } else {
+ return 1;
+ }
+ } else if (ab == null) {
+ return -1;
+ } else {
+ return byteArrayCompare(aa, ab, len);
+ }
+ }
+
+ /**
+ * @return -1, 0, or 1
+ */
+ static <C extends Comparable> int compare(C a, C b) {
+ if (a == null) {
+ if (b == null) {
+ return 0;
+ } else {
+ return 1;
+ }
+ } else if (b == null) {
+ return -1;
+ } else {
+ return Integer.signum(a.compareTo(b));
+ }
+ }
+
+ private final long mSeed;
+
+ private Random mRandom;
+
+ public TestDataEncoding(String name) {
+ super(name);
+ mSeed = 5399777425345431L;
+ }
+
+ protected void setUp() {
+ mRandom = new Random(mSeed);
+ }
+
+ protected void tearDown() {
+ }
+
+ public void test_boolean() throws Exception {
+ byte[] bytes = new byte[1];
+ boolean lastValue = false;
+ byte[] lastBytes = null;
+ for (int i=0; i<SHORT_TEST; i++) {
+ boolean value = mRandom.nextBoolean();
+ DataEncoder.encode(value, bytes, 0);
+ assertEquals(value, DataDecoder.decodeBoolean(bytes, 0));
+ if (lastBytes != null) {
+ int sgn = compare(value, lastValue);
+ assertEquals(sgn, byteArrayCompare(bytes, lastBytes));
+ }
+ lastValue = value;
+ lastBytes = bytes.clone();
+ }
+ }
+
+ public void test_Boolean() throws Exception {
+ byte[] bytes = new byte[1];
+ Boolean lastValue = false;
+ byte[] lastBytes = null;
+ for (int i=0; i<SHORT_TEST; i++) {
+ Boolean value;
+ if (mRandom.nextInt(10) == 1) {
+ value = null;
+ } else {
+ value = mRandom.nextBoolean();
+ }
+ DataEncoder.encode(value, bytes, 0);
+ assertEquals(value, DataDecoder.decodeBooleanObj(bytes, 0));
+ if (lastBytes != null) {
+ int sgn = compare(value, lastValue);
+ assertEquals(sgn, byteArrayCompare(bytes, lastBytes));
+ }
+ lastValue = value;
+ lastBytes = bytes.clone();
+ }
+ }
+
+ public void test_byte() throws Exception {
+ byte[] bytes = new byte[1];
+ byte lastValue = 0;
+ byte[] lastBytes = null;
+ for (int i=0; i<SHORT_TEST; i++) {
+ byte value = (byte) mRandom.nextInt();
+ DataEncoder.encode(value, bytes, 0);
+ assertEquals(value, DataDecoder.decodeByte(bytes, 0));
+ if (lastBytes != null) {
+ int sgn = compare(value, lastValue);
+ assertEquals(sgn, byteArrayCompare(bytes, lastBytes));
+ }
+ lastValue = value;
+ lastBytes = bytes.clone();
+ }
+ }
+
+ public void test_Byte() throws Exception {
+ byte[] bytes = new byte[2];
+ Byte lastValue = 0;
+ byte[] lastBytes = null;
+ for (int i=0; i<SHORT_TEST; i++) {
+ Byte value;
+ if (mRandom.nextInt(10) == 1) {
+ value = null;
+ assertEquals(1, DataEncoder.encode(value, bytes, 0));
+ } else {
+ value = (byte) mRandom.nextInt();
+ assertEquals(2, DataEncoder.encode(value, bytes, 0));
+ }
+ assertEquals(value, DataDecoder.decodeByteObj(bytes, 0));
+ if (lastBytes != null) {
+ int sgn = compare(value, lastValue);
+ assertEquals(sgn, byteArrayCompare(bytes, lastBytes));
+ }
+ lastValue = value;
+ lastBytes = bytes.clone();
+ }
+ }
+
+ public void test_short() throws Exception {
+ byte[] bytes = new byte[2];
+ short lastValue = 0;
+ byte[] lastBytes = null;
+ for (int i=0; i<SHORT_TEST; i++) {
+ short value = (short) mRandom.nextInt();
+ DataEncoder.encode(value, bytes, 0);
+ assertEquals(value, DataDecoder.decodeShort(bytes, 0));
+ if (lastBytes != null) {
+ int sgn = compare(value, lastValue);
+ assertEquals(sgn, byteArrayCompare(bytes, lastBytes));
+ }
+ lastValue = value;
+ lastBytes = bytes.clone();
+ }
+ }
+
+ public void test_Short() throws Exception {
+ byte[] bytes = new byte[3];
+ Short lastValue = 0;
+ byte[] lastBytes = null;
+ for (int i=0; i<SHORT_TEST; i++) {
+ Short value;
+ if (mRandom.nextInt(10) == 1) {
+ value = null;
+ assertEquals(1, DataEncoder.encode(value, bytes, 0));
+ } else {
+ value = (short) mRandom.nextInt();
+ assertEquals(3, DataEncoder.encode(value, bytes, 0));
+ }
+ assertEquals(value, DataDecoder.decodeShortObj(bytes, 0));
+ if (lastBytes != null) {
+ int sgn = compare(value, lastValue);
+ assertEquals(sgn, byteArrayCompare(bytes, lastBytes));
+ }
+ lastValue = value;
+ lastBytes = bytes.clone();
+ }
+ }
+
+ public void test_char() throws Exception {
+ byte[] bytes = new byte[2];
+ char lastValue = 0;
+ byte[] lastBytes = null;
+ for (int i=0; i<SHORT_TEST; i++) {
+ char value = (char) mRandom.nextInt();
+ DataEncoder.encode(value, bytes, 0);
+ assertEquals(value, DataDecoder.decodeChar(bytes, 0));
+ if (lastBytes != null) {
+ int sgn = compare(value, lastValue);
+ assertEquals(sgn, byteArrayCompare(bytes, lastBytes));
+ }
+ lastValue = value;
+ lastBytes = bytes.clone();
+ }
+ }
+
+ public void test_Character() throws Exception {
+ byte[] bytes = new byte[3];
+ Character lastValue = 0;
+ byte[] lastBytes = null;
+ for (int i=0; i<SHORT_TEST; i++) {
+ Character value;
+ if (mRandom.nextInt(10) == 1) {
+ value = null;
+ assertEquals(1, DataEncoder.encode(value, bytes, 0));
+ } else {
+ value = (char) mRandom.nextInt();
+ assertEquals(3, DataEncoder.encode(value, bytes, 0));
+ }
+ assertEquals(value, DataDecoder.decodeCharacterObj(bytes, 0));
+ if (lastBytes != null) {
+ int sgn = compare(value, lastValue);
+ assertEquals(sgn, byteArrayCompare(bytes, lastBytes));
+ }
+ lastValue = value;
+ lastBytes = bytes.clone();
+ }
+ }
+
+ public void test_int() throws Exception {
+ byte[] bytes = new byte[4];
+ int lastValue = 0;
+ byte[] lastBytes = null;
+ for (int i=0; i<SHORT_TEST; i++) {
+ int value = mRandom.nextInt();
+ DataEncoder.encode(value, bytes, 0);
+ assertEquals(value, DataDecoder.decodeInt(bytes, 0));
+ if (lastBytes != null) {
+ int sgn = compare(value, lastValue);
+ assertEquals(sgn, byteArrayCompare(bytes, lastBytes));
+ }
+ lastValue = value;
+ lastBytes = bytes.clone();
+ }
+ }
+
+ public void test_Integer() throws Exception {
+ byte[] bytes = new byte[5];
+ Integer lastValue = 0;
+ byte[] lastBytes = null;
+ for (int i=0; i<SHORT_TEST; i++) {
+ Integer value;
+ if (mRandom.nextInt(10) == 1) {
+ value = null;
+ assertEquals(1, DataEncoder.encode(value, bytes, 0));
+ } else {
+ value = mRandom.nextInt();
+ assertEquals(5, DataEncoder.encode(value, bytes, 0));
+ }
+ assertEquals(value, DataDecoder.decodeIntegerObj(bytes, 0));
+ if (lastBytes != null) {
+ int sgn = compare(value, lastValue);
+ assertEquals(sgn, byteArrayCompare(bytes, lastBytes));
+ }
+ lastValue = value;
+ lastBytes = bytes.clone();
+ }
+ }
+
+ public void test_long() throws Exception {
+ byte[] bytes = new byte[8];
+ long lastValue = 0;
+ byte[] lastBytes = null;
+ for (int i=0; i<SHORT_TEST; i++) {
+ long value = mRandom.nextLong();
+ DataEncoder.encode(value, bytes, 0);
+ assertEquals(value, DataDecoder.decodeLong(bytes, 0));
+ if (lastBytes != null) {
+ int sgn = compare(value, lastValue);
+ assertEquals(sgn, byteArrayCompare(bytes, lastBytes));
+ }
+ lastValue = value;
+ lastBytes = bytes.clone();
+ }
+ }
+
+ public void test_Long() throws Exception {
+ byte[] bytes = new byte[9];
+ Long lastValue = 0L;
+ byte[] lastBytes = null;
+ for (int i=0; i<SHORT_TEST; i++) {
+ Long value;
+ if (mRandom.nextInt(10) == 1) {
+ value = null;
+ assertEquals(1, DataEncoder.encode(value, bytes, 0));
+ } else {
+ value = mRandom.nextLong();
+ assertEquals(9, DataEncoder.encode(value, bytes, 0));
+ }
+ assertEquals(value, DataDecoder.decodeLongObj(bytes, 0));
+ if (lastBytes != null) {
+ int sgn = compare(value, lastValue);
+ assertEquals(sgn, byteArrayCompare(bytes, lastBytes));
+ }
+ lastValue = value;
+ lastBytes = bytes.clone();
+ }
+ }
+
+ public void test_float() throws Exception {
+ byte[] bytes = new byte[4];
+ float lastValue = 0;
+ byte[] lastBytes = null;
+ for (int i=0; i<LONG_TEST; i++) {
+ float value = Float.intBitsToFloat(mRandom.nextInt());
+ DataEncoder.encode(value, bytes, 0);
+ assertEquals(value, DataDecoder.decodeFloat(bytes, 0));
+ if (lastBytes != null) {
+ int sgn = compare(value, lastValue);
+ assertEquals(sgn, byteArrayCompare(bytes, lastBytes));
+ }
+ lastValue = value;
+ lastBytes = bytes.clone();
+ }
+ }
+
+ public void test_Float() throws Exception {
+ byte[] bytes = new byte[4];
+ Float lastValue = 0f;
+ byte[] lastBytes = null;
+ for (int i=0; i<LONG_TEST; i++) {
+ Float value;
+ if (mRandom.nextInt(10) == 1) {
+ value = null;
+ } else {
+ value = Float.intBitsToFloat(mRandom.nextInt());
+ }
+ DataEncoder.encode(value, bytes, 0);
+ assertEquals(value, DataDecoder.decodeFloatObj(bytes, 0));
+ if (lastBytes != null) {
+ int sgn = compare(value, lastValue);
+ assertEquals(sgn, byteArrayCompare(bytes, lastBytes));
+ }
+ lastValue = value;
+ lastBytes = bytes.clone();
+ }
+ }
+
+ public void test_double() throws Exception {
+ byte[] bytes = new byte[8];
+ double lastValue = 0;
+ byte[] lastBytes = null;
+ for (int i=0; i<LONG_TEST; i++) {
+ double value = Double.longBitsToDouble(mRandom.nextLong());
+ DataEncoder.encode(value, bytes, 0);
+ assertEquals(value, DataDecoder.decodeDouble(bytes, 0));
+ if (lastBytes != null) {
+ int sgn = compare(value, lastValue);
+ assertEquals(sgn, byteArrayCompare(bytes, lastBytes));
+ }
+ lastValue = value;
+ lastBytes = bytes.clone();
+ }
+ }
+
+ public void test_Double() throws Exception {
+ byte[] bytes = new byte[8];
+ Double lastValue = 0d;
+ byte[] lastBytes = null;
+ for (int i=0; i<LONG_TEST; i++) {
+ Double value;
+ if (mRandom.nextInt(10) == 1) {
+ value = null;
+ } else {
+ value = Double.longBitsToDouble(mRandom.nextLong());
+ }
+ DataEncoder.encode(value, bytes, 0);
+ assertEquals(value, DataDecoder.decodeDoubleObj(bytes, 0));
+ if (lastBytes != null) {
+ int sgn = compare(value, lastValue);
+ assertEquals(sgn, byteArrayCompare(bytes, lastBytes));
+ }
+ lastValue = value;
+ lastBytes = bytes.clone();
+ }
+ }
+
+ public void test_String() throws Exception {
+ String[] ref = new String[1];
+ for (int i=0; i<SHORT_TEST; i++) {
+ String value;
+ if (mRandom.nextInt(10) == 1) {
+ value = null;
+ } else {
+ int length;
+ switch (mRandom.nextInt(15)) {
+ default:
+ case 0: case 1: case 2: case 3: case 4: case 5: case 6: case 7:
+ length = mRandom.nextInt(100);
+ break;
+ case 8: case 9: case 10: case 11:
+ length = mRandom.nextInt(200);
+ break;
+ case 12: case 13:
+ length = mRandom.nextInt(20000);
+ break;
+ case 14:
+ length = mRandom.nextInt(3000000);
+ break;
+ }
+ char[] chars = new char[length];
+ for (int j=0; j<length; j++) {
+ char c;
+ switch (mRandom.nextInt(7)) {
+ default:
+ case 0: case 1: case 2: case 3:
+ c = (char) mRandom.nextInt(128);
+ break;
+ case 4: case 5:
+ c = (char) mRandom.nextInt(4000);
+ break;
+ case 6:
+ c = (char) mRandom.nextInt();
+ break;
+ }
+ chars[j] = c;
+ }
+ value = new String(chars);
+ }
+
+ byte[] bytes = new byte[DataEncoder.calculateEncodedStringLength(value)];
+ assertEquals(bytes.length, DataEncoder.encode(value, bytes, 0));
+ assertEquals(bytes.length, DataDecoder.decodeString(bytes, 0, ref));
+ assertEquals(value, ref[0]);
+ }
+ }
+}
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