diff --git a/test/perftest/ultrajsontest.cpp b/test/perftest/ultrajsontest.cpp
new file mode 100644
index 0000000..8328c63
--- /dev/null
+++ b/test/perftest/ultrajsontest.cpp
@@ -0,0 +1,64 @@
+#include "perftest.h"
+
+#if TEST_ULTRAJSON
+
+#include "ultrajson/ultrajsondec.c"
+#include "ultrajson/ultrajsonenc.c"
+
+class UltraJson : public PerfTest {
+};
+
+static char dummy = 0;
+
+static void Object_objectAddKey(JSOBJ obj, JSOBJ name, JSOBJ value) {}
+static void Object_arrayAddItem(JSOBJ obj, JSOBJ value) {}
+
+static JSOBJ Object_newString(wchar_t *start, wchar_t *end)	{ return &dummy; }
+static JSOBJ Object_newTrue(void)							{ return &dummy; }
+static JSOBJ Object_newFalse(void)							{ return &dummy; }
+static JSOBJ Object_newNull(void)							{ return &dummy; }
+static JSOBJ Object_newObject(void)							{ return &dummy; }
+static JSOBJ Object_newArray(void)							{ return &dummy; }
+static JSOBJ Object_newInteger(JSINT32 value)				{ return &dummy; }
+static JSOBJ Object_newLong(JSINT64 value)					{ return &dummy; }
+static JSOBJ Object_newDouble(double value)					{ return &dummy; }
+
+static void Object_releaseObject(JSOBJ obj) {}
+
+static JSONObjectDecoder decoder = {
+	Object_newString,
+	Object_objectAddKey,
+	Object_arrayAddItem,
+	Object_newTrue,
+	Object_newFalse,
+	Object_newNull,
+	Object_newObject,
+	Object_newArray,
+	Object_newInteger,
+	Object_newLong,
+	Object_newDouble,
+	Object_releaseObject,
+	malloc,
+	free,
+	realloc
+};
+
+TEST_F(UltraJson, Decode) {
+	for (int i = 0; i < kTrialCount; i++) {
+		decoder.errorStr = NULL;
+		decoder.errorOffset = NULL;
+		void *ret = JSON_DecodeObject(&decoder, json_, length_);
+		ASSERT_TRUE(ret != 0);
+	}
+}
+
+TEST_F(UltraJson, Whitespace) {
+	for (int i = 0; i < kTrialCount; i++) {
+		decoder.errorStr = NULL;
+		decoder.errorOffset = NULL;
+		void *ret = JSON_DecodeObject(&decoder, whitespace_, whitespace_length_);
+		ASSERT_TRUE(ret != 0);
+	}
+}
+
+#endif // TEST_ULTRAJSON