1 files changed, 34 insertions, 0 deletions
diff --git a/tests/libc/test_itoa.c b/tests/libc/test_itoa.c
new file mode 100644
index 0000000..837b77a
--- /dev/null
+++ b/tests/libc/test_itoa.c
@@ -0,0 +1,34 @@
+#include "stdlib.h"
+#include "string.h"
+#include "limits.h"
+
+int main( void )
+{
+	char *res;
+	char buf[12];
+	
+	// simple conversion without sign
+	res = itoa( 568876, buf, 10 );
+	if( strcmp( buf, "568876" ) ) return 1;
+
+	// test if the returned pointer points to the buffer
+	if( strcmp( res, buf ) ) return 1;
+
+	// conversion with sign
+	res = itoa( -568876, buf, 10 );
+	if( strcmp( buf, "-568876" ) ) return 1;
+
+	// convert upper limit
+	res = itoa( INT_MAX, buf, 10 );
+	if( strcmp( buf, "2147483647" ) ) return 1;
+
+	// convert lower limit
+	res = itoa( INT_MIN+1, buf, 10 );
+	if( strcmp( buf, "-2147483647" ) ) return 1;
+	
+	// convert to hex
+	res = itoa( 568876, buf, 16 );
+	if( strcmp( buf, "8AE2C" ) ) return 1;
+	
+	return 0;
+}