@@ -4,7 +4,7 @@ PYTHON_CFLAGS=-Wall -I $(CPYTHON_SRC) -I $(CPYTHON_SRC)/Include
 PYTHON_LDFLAGS=-l $(LIBPYTHON) -L $(CPYTHON_SRC)
 CFLAGS=$(shell pkg-config check --cflags) $(PYTHON_CFLAGS)
 LDFLAGS=$(shell pkg-config check --libs) $(PYTHON_LDFLAGS)
-SOURCES=runtests.c test_tuple.c
+SOURCES=runtests.c test_object.c test_tuple.c
 
 .PHONY: test_fullapi test_newcapi test_no_borrow
 .NOTPARALLEL: test_fullapi test_newcapi test_no_borrow
 
@@ -2,6 +2,7 @@
 #include <check.h>
 #include <Python.h>
 
+void register_PyObject(Suite *s);
 void register_PyTuple(Suite *s);
 
 int main(void)
@@ -18,6 +19,7 @@ int main(void)
 #endif
 
     Suite *s = suite_create("CAPI");
+    register_PyObject(s);
     register_PyTuple(s);
     SRunner *sr = srunner_create(s);
 
 
@@ -0,0 +1,39 @@
+/* Test PyObject API */
+
+#include <stdlib.h>
+#include <check.h>
+#include <Python.h>
+
+
+START_TEST(test_Py_INCREF)
+{
+    PyObject *obj = Py_None;
+    Py_ssize_t refcnt = Py_REFCNT(obj);
+
+    Py_INCREF(obj);
+    ck_assert_int_eq(Py_REFCNT(obj), refcnt + 1);
+
+    Py_DECREF(obj);
+}
+END_TEST
+
+
+START_TEST(test_Py_DECREF)
+{
+    PyObject *obj = Py_None;
+    Py_INCREF(obj);
+    Py_ssize_t refcnt = Py_REFCNT(obj);
+
+    Py_DECREF(obj);
+    ck_assert_int_eq(Py_REFCNT(obj), refcnt - 1);
+}
+END_TEST
+
+
+void register_PyObject(Suite *s)
+{
+    TCase *testcase = tcase_create("PyObject");
+    tcase_add_test(testcase, test_Py_INCREF);
+    tcase_add_test(testcase, test_Py_DECREF);
+    suite_add_tcase(s, testcase);
+}