error for not scanning

post.go

@@ -2,6 +2,7 @@ package owl
 
 import (
 	"bytes"
+	"errors"
 	"io/ioutil"
 	"net/url"
 	"os"
@@ -308,7 +309,7 @@ func (post *Post) SendWebmention(webmention WebmentionOut) error {
 
 	// if last scan is less than 7 days ago, don't send webmention
 	if webmention.ScannedAt.After(time.Now().Add(-7*24*time.Hour)) && !webmention.Supported {
-		return nil
+		return errors.New("did not scan. Last scan was less than 7 days ago")
 	}
 
 	webmention.ScannedAt = time.Now()

post_test.go

@@ -392,8 +392,8 @@ func TestSendWebmentionOnlyScansOncePerWeek(t *testing.T) {
 	webmention = webmentions[0]
 
 	err := post.SendWebmention(webmention)
-	if err != nil {
+	if err == nil {
-		t.Errorf("Error sending webmention: %v", err)
+		t.Errorf("Expected error, got nil")
 	}
 
 	webmentions = post.OutgoingWebmentions()