diff --git a/tests/Makefile.am b/tests/Makefile.am
index 8c16178..29adb2c 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -37,7 +37,12 @@ $(test_cert): $(test_key) Makefile
 
 TESTS = sign-verify.sh \
 	sign-verify-detached.sh \
-	sign-attach-verify.sh
+	sign-attach-verify.sh \
+	sign-missing-image.sh \
+	sign-missing-cert.sh \
+	sign-missing-key.sh \
+	verify-missing-image.sh \
+	verify-missing-cert.sh
 
 EXTRA_DIST = $(test_lds) test.S $(TESTS) $(check_SCRIPTS)
 CLEANFILES = $(test_key) $(test_cert) $(test_image)
diff --git a/tests/sign-missing-cert.sh b/tests/sign-missing-cert.sh
new file mode 100755
index 0000000..42fc548
--- /dev/null
+++ b/tests/sign-missing-cert.sh
@@ -0,0 +1,12 @@
+#!/bin/bash -e
+
+. "$srcdir/common.sh"
+
+signed="test.signed"
+
+set +e
+"$sbsign" --cert "missing-cert" --key "$key" --output "$signed" "$image"
+rc=$?
+set -e
+
+test $rc -eq 1
diff --git a/tests/sign-missing-image.sh b/tests/sign-missing-image.sh
new file mode 100755
index 0000000..e685ca1
--- /dev/null
+++ b/tests/sign-missing-image.sh
@@ -0,0 +1,12 @@
+#!/bin/bash -e
+
+. "$srcdir/common.sh"
+
+signed="test.signed"
+
+set +e
+"$sbsign" --cert "$cert" --key "$key" --output "$signed" "missing-image"
+rc=$?
+set -e
+
+test $rc -eq 1
diff --git a/tests/sign-missing-key.sh b/tests/sign-missing-key.sh
new file mode 100755
index 0000000..d9dceb5
--- /dev/null
+++ b/tests/sign-missing-key.sh
@@ -0,0 +1,12 @@
+#!/bin/bash -e
+
+. "$srcdir/common.sh"
+
+signed="test.signed"
+
+set +e
+"$sbsign" --cert "$cert" --key "missing-key" --output "$signed" "$image"
+rc=$?
+set -e
+
+test $rc -eq 1
diff --git a/tests/verify-missing-cert.sh b/tests/verify-missing-cert.sh
new file mode 100755
index 0000000..cb4fcab
--- /dev/null
+++ b/tests/verify-missing-cert.sh
@@ -0,0 +1,14 @@
+#!/bin/bash -e
+
+. "$srcdir/common.sh"
+
+signed="test.signed"
+
+"$sbsign" --cert "$cert" --key "$key" --output "$signed" "$image"
+
+set +e
+"$sbverify" --cert "missing-cert" "$signed"
+rc=$?
+set -e
+
+test $rc -eq 1
diff --git a/tests/verify-missing-image.sh b/tests/verify-missing-image.sh
new file mode 100755
index 0000000..cf0652c
--- /dev/null
+++ b/tests/verify-missing-image.sh
@@ -0,0 +1,12 @@
+#!/bin/bash -e
+
+. "$srcdir/common.sh"
+
+signed="test.signed"
+
+set +e
+"$sbverify" "missing-image"
+rc=$?
+set -e
+
+test $rc -eq 1