java: adds Unpacker.unpackBigInteger()

1 files changed, 24 insertions, 0 deletions

diff --git a/java/src/test/java/org/msgpack/TestDirectConversion.java b/java/src/test/java/org/msgpack/TestDirectConversion.java
index dbacf01..1822ecb 100644
--- a/java/src/test/java/org/msgpack/TestDirectConversion.java
+++ b/java/src/test/java/org/msgpack/TestDirectConversion.java
@@ -3,6 +3,7 @@ package org.msgpack;
 import org.msgpack.*;
 import java.io.*;
 import java.util.*;
+import java.math.BigInteger;
 
 import org.junit.Test;
 import static org.junit.Assert.*;
@@ -49,6 +50,29 @@ public class TestDirectConversion {
 	}
 
 	@Test
+	public void testBigInteger() throws Exception {
+		testBigInteger(BigInteger.valueOf(0));
+		testBigInteger(BigInteger.valueOf(-1));
+		testBigInteger(BigInteger.valueOf(1));
+		testBigInteger(BigInteger.valueOf(Integer.MIN_VALUE));
+		testBigInteger(BigInteger.valueOf(Integer.MAX_VALUE));
+		testBigInteger(BigInteger.valueOf(Long.MIN_VALUE));
+		testBigInteger(BigInteger.valueOf(Long.MAX_VALUE));
+		BigInteger max = BigInteger.valueOf(Long.MAX_VALUE).setBit(63);
+		testBigInteger(max);
+		Random rand = new Random();
+		for (int i = 0; i < 1000; i++)
+			testBigInteger( max.subtract(BigInteger.valueOf( Math.abs(rand.nextLong()) )) );
+	}
+	public void testBigInteger(BigInteger val) throws Exception {
+		ByteArrayOutputStream out = new ByteArrayOutputStream();
+		new Packer(out).pack(val);
+		ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
+		Unpacker pac = new Unpacker(in);
+		assertEquals(val, pac.unpackBigInteger());
+	}
+
+	@Test
 	public void testFloat() throws Exception {
 		testFloat((float)0.0);
 		testFloat((float)-0.0);