diff --git a/test/macro.h b/test/macro.h
index ab23a69..d75708b 100644
--- a/test/macro.h
+++ b/test/macro.h
@@ -4,9 +4,10 @@
 #include <cstdio>   // printf
 #include <iostream> // cout
 
-#define EXPECT(x)                                                           \
-	if (!(x)) {                                                             \
-		printf("FAIL: %s:%d: EXPECT(%s) failed\n", __FILE__, __LINE__, #x); \
+#define EXPECT(x)                                                   \
+	if (!(x)) {                                                     \
+		printf("\033[31;1mFAIL\033[0m: %s:%d: EXPECT(%s) failed\n", \
+		       __FILE__, __LINE__, #x);                             \
 	}
 
 #define EXPECT_EQ(a, b)                                                       \
@@ -17,4 +18,12 @@
 		Test::TestSuite::the().currentTestCaseFailed();                       \
 	}
 
+#define EXPECT_NE(a, b)                                                       \
+	if (a == b) {                                                             \
+		std::cout << "\033[31;1mFAIL\033[0m: " << __FILE__ << ":" << __LINE__ \
+				  << ": EXPECT_NE(" << #a << ", " << #b ") failed with"       \
+				  << " lhs='" << a << "' and rhs='" << b << "'" << std::endl; \
+		Test::TestSuite::the().currentTestCaseFailed();                       \
+	}
+
 #endif // TEST_H