2 files changed, 12 insertions, 0 deletions
diff --git a/nvdmirror/failsetcache.go b/nvdmirror/failsetcache.go
index ed5679b..b119a10 100644
--- a/nvdmirror/failsetcache.go
+++ b/nvdmirror/failsetcache.go
@@ -17,6 +17,11 @@ func (me FailSetCache) Set(s string, _ map[string]string) error {
   return fmt.Errorf("set failed: %s", s)
 }
 
+// Delete value (always succeeds).
+func (me FailSetCache) Delete(_ string) error {
+  return nil
+}
+
 // Close cache.  Always succeeds
 func (me FailSetCache) Close() error {
   return nil
diff --git a/nvdmirror/failsetcache_test.go b/nvdmirror/failsetcache_test.go
index 8e20a33..d1b91bf 100644
--- a/nvdmirror/failsetcache_test.go
+++ b/nvdmirror/failsetcache_test.go
@@ -20,6 +20,13 @@ func TestFailSetCache(t *testing.T) {
     }
   })
 
+  // test delete
+  t.Run("Delete", func(t *testing.T) {
+    if err := cache.Delete("foo"); err != nil {
+      t.Error(err)
+    }
+  })
+
   // test Close
   t.Run("Close", func(t *testing.T) {
     if err := cache.Close(); err != nil {