test(utils): add utils_tests directory with not_null test

Author: Reim-developer

tests/utils_tests/CMakeLists.txt

@@ -0,0 +1 @@
+setup_wheel_test(utils_not_null_test utils_not_null_test.cxx)

tests/utils_tests/utils_not_null_test.cxx

@@ -0,0 +1,38 @@
+#include <__internal/__assert.hxx>
+#include <wheel_utils/logging.hxx>
+
+#if defined (WHEEL_EXPERIMENT)
+    using wheel_utils::is_pointer_value;
+    using wheel_utils::not_null;
+#endif
+
+#if defined (WHEEL_EXPERIMENT)
+
+    TEST(test_is_pointer_value)
+        assert_eq(is_pointer_value<int>, false);
+        assert_eq(is_pointer_value<int*>, true);
+        assert_eq(is_pointer_value<void*>, true);
+    DONE 
+
+    #if defined (WHEEL_NO_FAIL_FAST)
+        TEST(test_no_fail_fast)
+            assert_eq(not_null<void*>(nullptr), false);
+            
+            int var     = 10;
+            int *var_p  = &var;
+            assert_eq(not_null<int*>(var_p), true);
+        DONE 
+
+    #else 
+        NO_TEST(test_no_fail_fast)
+    #endif
+
+#else 
+    NO_TEST(test_is_pointer_value)
+    NO_TEST(test_no_fail_fast)
+#endif 
+
+TEST_MAIN
+    RUN(test_is_pointer_value)
+    RUN(test_no_fail_fast)
+END_MAIN