diff options
| author | Brian S. O'Neill <bronee@gmail.com> | 2008-07-20 01:43:15 +0000 |
|---|---|---|
| committer | Brian S. O'Neill <bronee@gmail.com> | 2008-07-20 01:43:15 +0000 |
| commit | 58b7d9479070c41656c730a45625adcfcaf27b14 (patch) | |
| tree | de3a7acdd9ec05a7bb6e4532a57dea3b6b161b7a /src/test/java/com/amazon/carbonado/raw | |
| parent | a2aac20e018435c319d21c941c99b9ee53279045 (diff) | |
Added utilities for encoding and decoding BigDecimals.
Diffstat (limited to 'src/test/java/com/amazon/carbonado/raw')
| -rw-r--r-- | src/test/java/com/amazon/carbonado/raw/TestKeyEncoding.java | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/src/test/java/com/amazon/carbonado/raw/TestKeyEncoding.java b/src/test/java/com/amazon/carbonado/raw/TestKeyEncoding.java index 3f6485f..bbbb1c3 100644 --- a/src/test/java/com/amazon/carbonado/raw/TestKeyEncoding.java +++ b/src/test/java/com/amazon/carbonado/raw/TestKeyEncoding.java @@ -18,6 +18,7 @@ package com.amazon.carbonado.raw;
+import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.Random;
@@ -444,6 +445,204 @@ public class TestKeyEncoding extends TestCase { }
}
+ public void test_BigDecimal() throws Exception {
+ BigDecimal[] ref = new BigDecimal[1];
+
+ {
+ BigDecimal d1 = new BigDecimal("123");
+ BigDecimal d2 = new BigDecimal("123.0");
+
+ assertTrue(d1.compareTo(d2) == 0);
+ assertFalse(d1.equals(d2));
+
+ byte[] b1 = new byte[KeyEncoder.calculateEncodedLength(d1)];
+ KeyEncoder.encode(d1, b1, 0);
+
+ byte[] b2 = new byte[KeyEncoder.calculateEncodedLength(d2)];
+ KeyEncoder.encode(d2, b2, 0);
+
+ assertTrue(TestDataEncoding.byteArrayCompare(b1, b2) < 0);
+
+ ref[0] = BigDecimal.ZERO;
+ KeyDecoder.decode(b1, 0, ref);
+ assertEquals(d1, ref[0]);
+
+ ref[0] = BigDecimal.ZERO;
+ KeyDecoder.decode(b2, 0, ref);
+ assertEquals(d2, ref[0]);
+ }
+
+ {
+ BigDecimal d1 = new BigDecimal("-123.0");
+ BigDecimal d2 = new BigDecimal("-123");
+
+ assertTrue(d1.compareTo(d2) == 0);
+ assertFalse(d1.equals(d2));
+
+ byte[] b1 = new byte[KeyEncoder.calculateEncodedLength(d1)];
+ KeyEncoder.encode(d1, b1, 0);
+
+ byte[] b2 = new byte[KeyEncoder.calculateEncodedLength(d2)];
+ KeyEncoder.encode(d2, b2, 0);
+
+ assertTrue(TestDataEncoding.byteArrayCompare(b1, b2) < 0);
+
+ ref[0] = BigDecimal.ZERO;
+ KeyDecoder.decode(b1, 0, ref);
+ assertEquals(d1, ref[0]);
+
+ ref[0] = BigDecimal.ZERO;
+ KeyDecoder.decode(b2, 0, ref);
+ assertEquals(d2, ref[0]);
+ }
+
+ byte[] bytes = new byte[5 + 1 + 100 + 5];
+
+ BigDecimal lastValue = null;
+ byte[] lastBytes = null;
+ for (int i=0; i<LONG_TEST; i++) {
+ BigDecimal value;
+ int mode = mRandom.nextInt(10);
+ if (mode == 1) {
+ value = null;
+ } else if (mode == 2) {
+ int len = mRandom.nextInt(10 * 8);
+ BigInteger unscaled = new BigInteger(len, mRandom);
+ if (mRandom.nextBoolean()) {
+ unscaled = unscaled.negate();
+ }
+ int scale = mRandom.nextInt(10) - 5;
+ value = new BigDecimal(unscaled, scale);
+ } else {
+ int len = mRandom.nextInt(100 * 8);
+ BigInteger unscaled = new BigInteger(len, mRandom);
+ if (mRandom.nextBoolean()) {
+ unscaled = unscaled.negate();
+ }
+ int scale = mRandom.nextInt();
+ value = new BigDecimal(unscaled, scale);
+ }
+
+ int amt = KeyEncoder.calculateEncodedLength(value);
+ int actualAmt = KeyEncoder.encode(value, bytes, 0);
+ assertEquals(amt, actualAmt);
+
+ actualAmt = KeyDecoder.decode(bytes, 0, ref);
+ if (value != null && value.compareTo(BigDecimal.ZERO) == 0) {
+ assertTrue(value.compareTo(ref[0]) == 0);
+ } else {
+ assertEquals(value, ref[0]);
+ }
+ assertEquals(amt, actualAmt);
+
+ if (lastBytes != null) {
+ int sgn = TestDataEncoding.compare(value, lastValue);
+ assertEquals(sgn, TestDataEncoding.byteArrayCompare(bytes, lastBytes));
+ }
+ lastValue = value;
+ lastBytes = bytes.clone();
+ }
+ }
+
+ public void test_BigDecimalDesc() throws Exception {
+ BigDecimal[] ref = new BigDecimal[1];
+
+ {
+ BigDecimal d1 = new BigDecimal("123");
+ BigDecimal d2 = new BigDecimal("123.0");
+
+ assertTrue(d1.compareTo(d2) == 0);
+ assertFalse(d1.equals(d2));
+
+ byte[] b1 = new byte[KeyEncoder.calculateEncodedLength(d1)];
+ KeyEncoder.encodeDesc(d1, b1, 0);
+
+ byte[] b2 = new byte[KeyEncoder.calculateEncodedLength(d2)];
+ KeyEncoder.encodeDesc(d2, b2, 0);
+
+ assertTrue(TestDataEncoding.byteArrayCompare(b1, b2) > 0);
+
+ ref[0] = BigDecimal.ZERO;
+ KeyDecoder.decodeDesc(b1, 0, ref);
+ assertEquals(d1, ref[0]);
+
+ ref[0] = BigDecimal.ZERO;
+ KeyDecoder.decodeDesc(b2, 0, ref);
+ assertEquals(d2, ref[0]);
+ }
+
+ {
+ BigDecimal d1 = new BigDecimal("-123.0");
+ BigDecimal d2 = new BigDecimal("-123");
+
+ assertTrue(d1.compareTo(d2) == 0);
+ assertFalse(d1.equals(d2));
+
+ byte[] b1 = new byte[KeyEncoder.calculateEncodedLength(d1)];
+ KeyEncoder.encodeDesc(d1, b1, 0);
+
+ byte[] b2 = new byte[KeyEncoder.calculateEncodedLength(d2)];
+ KeyEncoder.encodeDesc(d2, b2, 0);
+
+ assertTrue(TestDataEncoding.byteArrayCompare(b1, b2) > 0);
+
+ ref[0] = BigDecimal.ZERO;
+ KeyDecoder.decodeDesc(b1, 0, ref);
+ assertEquals(d1, ref[0]);
+
+ ref[0] = BigDecimal.ZERO;
+ KeyDecoder.decodeDesc(b2, 0, ref);
+ assertEquals(d2, ref[0]);
+ }
+
+ byte[] bytes = new byte[5 + 1 + 100 + 5];
+
+ BigDecimal lastValue = null;
+ byte[] lastBytes = null;
+ for (int i=0; i<LONG_TEST; i++) {
+ BigDecimal value;
+ int mode = mRandom.nextInt(10);
+ if (mode == 1) {
+ value = null;
+ } else if (mode == 2) {
+ int len = mRandom.nextInt(10 * 8);
+ BigInteger unscaled = new BigInteger(len, mRandom);
+ if (mRandom.nextBoolean()) {
+ unscaled = unscaled.negate();
+ }
+ int scale = mRandom.nextInt(10) - 5;
+ value = new BigDecimal(unscaled, scale);
+ } else {
+ int len = mRandom.nextInt(100 * 8);
+ BigInteger unscaled = new BigInteger(len, mRandom);
+ if (mRandom.nextBoolean()) {
+ unscaled = unscaled.negate();
+ }
+ int scale = mRandom.nextInt();
+ value = new BigDecimal(unscaled, scale);
+ }
+
+ int amt = KeyEncoder.calculateEncodedLength(value);
+ int actualAmt = KeyEncoder.encodeDesc(value, bytes, 0);
+ assertEquals(amt, actualAmt);
+
+ actualAmt = KeyDecoder.decodeDesc(bytes, 0, ref);
+ if (value != null && value.compareTo(BigDecimal.ZERO) == 0) {
+ assertTrue(value.compareTo(ref[0]) == 0);
+ } else {
+ assertEquals(value, ref[0]);
+ }
+ assertEquals(amt, actualAmt);
+
+ if (lastBytes != null) {
+ int sgn = -TestDataEncoding.compare(value, lastValue);
+ assertEquals(sgn, TestDataEncoding.byteArrayCompare(bytes, lastBytes));
+ }
+ lastValue = value;
+ lastBytes = bytes.clone();
+ }
+ }
+
public void test_String() throws Exception {
String lastValue = null;
byte[] lastBytes = null;
|