diff --git a/Userland/Tests/Kernel/TestKernelPledge.cpp b/Userland/Tests/Kernel/TestKernelPledge.cpp
new file mode 100644
index 0000000000..02f9ce6f9c
--- /dev/null
+++ b/Userland/Tests/Kernel/TestKernelPledge.cpp
@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2018-2021, the SerenityOS developers.
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibTest/TestCase.h>
+#include <unistd.h>
+
+TEST_CASE(test_nonexistent_pledge)
+{
+    auto res = pledge("testing123", "notthere");
+    if (res >= 0)
+        FAIL("Pledging on existent promises should fail.");
+}
+
+TEST_CASE(test_pledge_failures)
+{
+    auto res = pledge("stdio unix rpath", "stdio");
+    if (res < 0)
+        FAIL("Initial pledge is expected to work.");
+
+    res = pledge("stdio unix", "stdio unix");
+    if (res >= 0)
+        FAIL("Additional execpromise \"unix\" should have failed");
+
+    res = pledge("stdio", "stdio");
+    if (res < 0)
+        FAIL("Reducing promises is expected to work.");
+}
diff --git a/Userland/Tests/Kernel/pledge-test-failures.cpp b/Userland/Tests/Kernel/pledge-test-failures.cpp
deleted file mode 100644
index e09e04f758..0000000000
--- a/Userland/Tests/Kernel/pledge-test-failures.cpp
+++ /dev/null
@@ -1,32 +0,0 @@
-/*
- * Copyright (c) 2018-2020, the SerenityOS developers.
- *
- * SPDX-License-Identifier: BSD-2-Clause
- */
-
-#include <stdio.h>
-#include <unistd.h>
-
-int main()
-{
-    int res = pledge("stdio unix rpath", "stdio");
-    if (res < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    res = pledge("stdio unix", "stdio unix");
-    if (res >= 0) {
-        fprintf(stderr, "second pledge should have failed\n");
-        return 1;
-    }
-
-    res = pledge("stdio rpath", "stdio");
-    if (res < 0) {
-        perror("pledge");
-        return 1;
-    }
-
-    printf("PASS\n");
-    return 0;
-}