test case for CRC32() SQL function

Author: grooverdan

mysql-test/r/func_math.result

@@ -805,3 +805,9 @@ STDDEV_POP(ROUND(0,@A:=2009))
 select 0=0, 0=-0, 0.0= -0.0, 0.0 = -(0.0), 0.0E1=-0.0E1, 0.0E1=-(0.0E1);
 0=0	0=-0	0.0= -0.0	0.0 = -(0.0)	0.0E1=-0.0E1	0.0E1=-(0.0E1)
 1	1	1	1	1	1
+#
+# CRC32 tests
+#
+select CRC32(NULL), CRC32(''), CRC32('MySQL'), CRC32('mysql'), CRC32('01234567'), CRC32('012345678');
+CRC32(NULL)	CRC32('')	CRC32('MySQL')	CRC32('mysql')	CRC32('01234567')	CRC32('012345678')
+NULL	0	3259397556	2501908538	763378421	939184570

mysql-test/t/func_math.test

@@ -600,3 +600,8 @@ SELECT STDDEV_POP(ROUND(0,@A:=2009)) FROM (SELECT 1 UNION SELECT 2) fake_table;
 --echo # Test zero
 select 0=0, 0=-0, 0.0= -0.0, 0.0 = -(0.0), 0.0E1=-0.0E1, 0.0E1=-(0.0E1);
 
+--echo #
+--echo # CRC32 tests
+--echo #
+
+select CRC32(NULL), CRC32(''), CRC32('MySQL'), CRC32('mysql'), CRC32('01234567'), CRC32('012345678');