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-rw-r--r--src/test/bignum_tests.cpp53
1 files changed, 53 insertions, 0 deletions
diff --git a/src/test/bignum_tests.cpp b/src/test/bignum_tests.cpp
index 744681871f..5b898d1499 100644
--- a/src/test/bignum_tests.cpp
+++ b/src/test/bignum_tests.cpp
@@ -122,4 +122,57 @@ BOOST_AUTO_TEST_CASE(bignum_setint64)
}
}
+
+BOOST_AUTO_TEST_CASE(bignum_SetCompact)
+{
+ CBigNum num;
+ num.SetCompact(0);
+ BOOST_CHECK_EQUAL(num.GetHex(), "0");
+ BOOST_CHECK_EQUAL(num.GetCompact(), 0);
+
+ num.SetCompact(0x00123456);
+ BOOST_CHECK_EQUAL(num.GetHex(), "0");
+ BOOST_CHECK_EQUAL(num.GetCompact(), 0);
+
+ num.SetCompact(0x01123456);
+ BOOST_CHECK_EQUAL(num.GetHex(), "12");
+ BOOST_CHECK_EQUAL(num.GetCompact(), 0x01120000);
+
+ // Make sure that we don't generate compacts with the 0x00800000 bit set
+ num = 0x80;
+ BOOST_CHECK_EQUAL(num.GetCompact(), 0x02008000);
+
+ num.SetCompact(0x01fedcba);
+ BOOST_CHECK_EQUAL(num.GetHex(), "-7e");
+ BOOST_CHECK_EQUAL(num.GetCompact(), 0x01fe0000);
+
+ num.SetCompact(0x02123456);
+ BOOST_CHECK_EQUAL(num.GetHex(), "1234");
+ BOOST_CHECK_EQUAL(num.GetCompact(), 0x02123400);
+
+ num.SetCompact(0x03123456);
+ BOOST_CHECK_EQUAL(num.GetHex(), "123456");
+ BOOST_CHECK_EQUAL(num.GetCompact(), 0x03123456);
+
+ num.SetCompact(0x04123456);
+ BOOST_CHECK_EQUAL(num.GetHex(), "12345600");
+ BOOST_CHECK_EQUAL(num.GetCompact(), 0x04123456);
+
+ num.SetCompact(0x04923456);
+ BOOST_CHECK_EQUAL(num.GetHex(), "-12345600");
+ BOOST_CHECK_EQUAL(num.GetCompact(), 0x04923456);
+
+ num.SetCompact(0x05009234);
+ BOOST_CHECK_EQUAL(num.GetHex(), "92340000");
+ BOOST_CHECK_EQUAL(num.GetCompact(), 0x05009234);
+
+ num.SetCompact(0x20123456);
+ BOOST_CHECK_EQUAL(num.GetHex(), "1234560000000000000000000000000000000000000000000000000000000000");
+ BOOST_CHECK_EQUAL(num.GetCompact(), 0x20123456);
+
+ num.SetCompact(0xff123456);
+ BOOST_CHECK_EQUAL(num.GetHex(), "123456000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000");
+ BOOST_CHECK_EQUAL(num.GetCompact(), 0xff123456);
+}
+
BOOST_AUTO_TEST_SUITE_END()