Notify homeowners of plumber replies

internal/web/posts_test.go

@@ -334,6 +334,22 @@ func TestPostReplyNotifications(t *testing.T) {
 		t.Fatalf("homeowner reply notification = %+v", msg)
 	}
 
+	rec = postForm(handler, "/posts", url.Values{
+		"_csrf":     {adminCSRF},
+		"parent_id": {adminReply.ID},
+		"body":      {"One more plumber detail."},
+	}, adminCookies)
+	if rec.Code != http.StatusSeeOther {
+		t.Fatalf("nested admin reply status = %d: %s", rec.Code, rec.Body.String())
+	}
+	msgs = waitForMail(t, recording, 3)
+	if msg := msgs[2]; msg.ToEmail != homeowner.Email ||
+		msg.RootID != root.ID ||
+		msg.ReplyBody != "One more plumber detail." ||
+		msg.ReplyAuthorName != admin.Name {
+		t.Fatalf("nested admin reply notification = %+v", msg)
+	}
+
 	rec = postForm(handler, "/posts", url.Values{
 		"_csrf":     {homeownerCSRF},
 		"parent_id": {root.ID},
@@ -376,7 +392,7 @@ func TestPostReplyNotifications(t *testing.T) {
 		t.Fatalf("no-email reply status = %d: %s", rec.Code, rec.Body.String())
 	}
 	time.Sleep(50 * time.Millisecond)
-	if recording.Len() != 2 {
+	if recording.Len() != 3 {
 		t.Fatalf("self, edit, or no-email action sent a notification: %+v", recording.Snapshot())
 	}
 }