diff --git a/tests/unit/test_util.h b/tests/unit/test_util.h
index 0f04da359..112641959 100644
--- a/tests/unit/test_util.h
+++ b/tests/unit/test_util.h
@@ -39,24 +39,40 @@ extern "C" {
 // Enable main functions
 #define ENABLE_TEST_MAIN
 
-#define SuccessOrQuit(ERR, MSG)                                                    \
-    do                                                                             \
-    {                                                                              \
-        if ((ERR) != OT_ERROR_NONE)                                                \
-        {                                                                          \
-            fprintf(stderr, "\nFAILED %s:%d - %s\n", __FUNCTION__, __LINE__, MSG); \
-            exit(-1);                                                              \
-        }                                                                          \
+/**
+ * This macro verifies a given error status to be successful (compared against value zero (0)), otherwise, it emits a
+ * given error messages and exits the program.
+ *
+ * @param[in]  aStatus     A scalar error status to be evaluated against zero (0).
+ * @param[in]  aMessage    A message (text string) to print on failure.
+ *
+ */
+#define SuccessOrQuit(aStatus, aMessage)                                                \
+    do                                                                                  \
+    {                                                                                   \
+        if ((aStatus) != 0)                                                             \
+        {                                                                               \
+            fprintf(stderr, "\nFAILED %s:%d - %s\n", __FUNCTION__, __LINE__, aMessage); \
+            exit(-1);                                                                   \
+        }                                                                               \
     } while (false)
 
-#define VerifyOrQuit(TST, MSG)                                                     \
-    do                                                                             \
-    {                                                                              \
-        if (!(TST))                                                                \
-        {                                                                          \
-            fprintf(stderr, "\nFAILED %s:%d - %s\n", __FUNCTION__, __LINE__, MSG); \
-            exit(-1);                                                              \
-        }                                                                          \
+/**
+ * This macro verifies that a given boolean condition is true, otherwise, it emits a given error message and exits the
+ * program.
+ *
+ * @param[in]  aCondition  A Boolean expression to be evaluated.
+ * @param[in]  aMessage    A message (text string) to print on failure.
+ *
+ */
+#define VerifyOrQuit(aCondition, aMessage)                                              \
+    do                                                                                  \
+    {                                                                                   \
+        if (!(aCondition))                                                              \
+        {                                                                               \
+            fprintf(stderr, "\nFAILED %s:%d - %s\n", __FUNCTION__, __LINE__, aMessage); \
+            exit(-1);                                                                   \
+        }                                                                               \
     } while (false)
 
 //#define CompileTimeAssert(COND, MSG) typedef char __C_ASSERT__[(COND)?1:-1]