diff --git a/t/csp.t b/t/csp.t
index 6dab97f..1f00c3f 100644
--- a/t/csp.t
+++ b/t/csp.t
@@ -10,5 +10,10 @@ my $nonce1 = $csp1->nonce_for('script-src');
 is $csp1->header_value, "script-src 'nonce-$nonce1'",
   'nonce added to header properly';
 
+my $digest = $csp1->sha_for('script-src' => 'some content');
+
+is $csp1->header_value, "script-src 'nonce-$nonce1' 'sha256-$digest'",
+  'digest added to header properly';
+
 done_testing;