fix: handle backend issue list regressions

server/topic_test.go

@@ -1272,6 +1272,55 @@ func TestShouldTryHotMessageFallback(t *testing.T) {
 	}
 }
 
+func TestShouldTryHotMessageSupplement(t *testing.T) {
+	opts := &types.QueryOpt{Since: 41, Before: 54, Limit: 20}
+	if !shouldTryHotMessageSupplement(types.TopicCatGrp, opts, 9) {
+		t.Fatal("expected hot message supplement for partial recent group range")
+	}
+	if shouldTryHotMessageSupplement(types.TopicCatGrp, opts, 13) {
+		t.Fatal("did not expect supplement when range is complete")
+	}
+	if shouldTryHotMessageSupplement(types.TopicCatP2P, opts, 9) {
+		t.Fatal("did not expect supplement for p2p topic")
+	}
+	if shouldTryHotMessageSupplement(types.TopicCatGrp, &types.QueryOpt{Since: 41, Before: 54, Limit: 20, IdRanges: []types.Range{{Low: 41, Hi: 54}}}, 9) {
+		t.Fatal("did not expect supplement for explicit id ranges")
+	}
+}
+
+func TestMergeHotMessageSupplementFillsRecentRangeGaps(t *testing.T) {
+	opts := &types.QueryOpt{Since: 41, Before: 54, Limit: 20}
+	messages := []types.Message{
+		{SeqId: 53, Content: "db-53"},
+		{SeqId: 52, Content: "db-52"},
+		{SeqId: 51, Content: "db-51"},
+		{SeqId: 50, Content: "db-50"},
+		{SeqId: 49, Content: "db-49"},
+		{SeqId: 47, Content: "db-47"},
+		{SeqId: 46, Content: "db-46"},
+		{SeqId: 42, Content: "db-42"},
+		{SeqId: 41, Content: "db-41"},
+	}
+	hotMessages := make([]types.Message, 0, 13)
+	for seq := int64(53); seq >= 41; seq-- {
+		hotMessages = append(hotMessages, types.Message{SeqId: seq, Content: "hot"})
+	}
+
+	merged := mergeHotMessageSupplement(messages, hotMessages, opts)
+	if len(merged) != 13 {
+		t.Fatalf("merged len = %d, want 13: %#v", len(merged), merged)
+	}
+	for i, msg := range merged {
+		wantSeq := int64(53 - i)
+		if msg.SeqId != wantSeq {
+			t.Fatalf("merged[%d].SeqId = %d, want %d", i, msg.SeqId, wantSeq)
+		}
+		if msg.SeqId == 53 && msg.Content != "db-53" {
+			t.Fatalf("database message should win duplicate seqs, got %#v", msg.Content)
+		}
+	}
+}
+
 func TestFilterHotMessagesForUserSkipsDeleted(t *testing.T) {
 	uid := types.Uid(1)
 	now := time.Now()
@@ -3794,6 +3843,30 @@ func TestMessageAttachmentURLsDeduplicatesExplicitAndContentFileID(t *testing.T)
 	}
 }
 
+func TestMessageAttachmentURLsFindsDraftyEntityRefs(t *testing.T) {
+	msg := &ClientComMessage{
+		Pub: &MsgClientPub{
+			Content: map[string]any{
+				"txt": "video",
+				"ent": []any{
+					map[string]any{
+						"tp": "EX",
+						"data": map[string]any{
+							"mime": "video/mp4",
+							"ref":  "/v0/file/s/KJ0Qlrk4Gzw.mp4",
+						},
+					},
+				},
+			},
+		},
+	}
+
+	attachments := messageAttachmentURLs(msg)
+	if len(attachments) != 1 || attachments[0] != "/v0/file/s/KJ0Qlrk4Gzw" {
+		t.Fatalf("unexpected Drafty attachments: %#v", attachments)
+	}
+}
+
 func TestHandleBroadcastInfoChannelWithMultipleReaders(t *testing.T) {
 	topicName := "grpTest"
 	chanName := "chnTest"