diff --git a/src/test/test-execute.c b/src/test/test-execute.c
index 0be66c2c7b..847415b9ae 100644
--- a/src/test/test-execute.c
+++ b/src/test/test-execute.c
@@ -282,7 +282,11 @@ static void test_exec_cpuaffinity(Manager *m) {
 
 static void test_exec_credentials(Manager *m) {
         test(m, "exec-set-credential.service", 0, CLD_EXITED);
+        test(m, "exec-set-credential-with-mount-namespace.service", 0, CLD_EXITED);
+        test(m, "exec-set-credential-with-seccomp.service", 0, CLD_EXITED);
         test(m, "exec-load-credential.service", MANAGER_IS_SYSTEM(m) ? 0 : EXIT_CREDENTIALS, CLD_EXITED);
+        test(m, "exec-load-credential-with-mount-namespace.service", MANAGER_IS_SYSTEM(m) ? 0 : EXIT_CREDENTIALS, CLD_EXITED);
+        test(m, "exec-load-credential-with-seccomp.service", MANAGER_IS_SYSTEM(m) ? 0 : EXIT_CREDENTIALS, CLD_EXITED);
         test(m, "exec-credentials-dir-specifier.service", MANAGER_IS_SYSTEM(m) ? 0 : EXIT_CREDENTIALS, CLD_EXITED);
 }
 
diff --git a/test/test-execute/exec-load-credential-with-mount-namespace.service b/test/test-execute/exec-load-credential-with-mount-namespace.service
new file mode 100644
index 0000000000..fd71cf6717
--- /dev/null
+++ b/test/test-execute/exec-load-credential-with-mount-namespace.service
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+[Unit]
+Description=Test for LoadCredential=
+
+[Service]
+ExecStart=/bin/sh -x -c 'test "$$(cat %d/test-execute.load-credential)" = "foo"'
+Type=oneshot
+LoadCredential=test-execute.load-credential
+PrivateMounts=yes
diff --git a/test/test-execute/exec-load-credential-with-seccomp.service b/test/test-execute/exec-load-credential-with-seccomp.service
new file mode 100644
index 0000000000..67303f2713
--- /dev/null
+++ b/test/test-execute/exec-load-credential-with-seccomp.service
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+[Unit]
+Description=Test for LoadCredential=
+
+[Service]
+ExecStart=/bin/sh -x -c 'test "$$(cat %d/test-execute.load-credential)" = "foo"'
+Type=oneshot
+LoadCredential=test-execute.load-credential
+SystemCallFilter=~open_tree move_mount
diff --git a/test/test-execute/exec-set-credential-with-mount-namespace.service b/test/test-execute/exec-set-credential-with-mount-namespace.service
new file mode 100644
index 0000000000..67d15e5dbb
--- /dev/null
+++ b/test/test-execute/exec-set-credential-with-mount-namespace.service
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+[Unit]
+Description=Test for SetCredential=
+
+[Service]
+ExecStart=/bin/sh -x -c 'test "$$(cat %d/test-execute.set-credential)" = "hoge"'
+Type=oneshot
+SetCredential=test-execute.set-credential:hoge
+PrivateMounts=yes
diff --git a/test/test-execute/exec-set-credential-with-seccomp.service b/test/test-execute/exec-set-credential-with-seccomp.service
new file mode 100644
index 0000000000..778777b947
--- /dev/null
+++ b/test/test-execute/exec-set-credential-with-seccomp.service
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+[Unit]
+Description=Test for SetCredential=
+
+[Service]
+ExecStart=/bin/sh -x -c 'test "$$(cat %d/test-execute.set-credential)" = "hoge"'
+Type=oneshot
+SetCredential=test-execute.set-credential:hoge
+SystemCallFilter=~open_tree move_mount