Function TestEditMessagePreservesModelConfigByDefault

coderd/x/chatd/chatd_test.go:8998–9036

TestEditMessagePreservesModelConfigByDefault verifies that omitting ModelConfigID on edit keeps the original message's model. This is the existing default for callers that only edit the text.

(t *testing.T)

// ModelConfigID on edit keeps the original message's model. This is the
// existing default for callers that only edit the text.
func TestEditMessagePreservesModelConfigByDefault(t *testing.T) {
	t.Parallel()

	db, ps := dbtestutil.NewDB(t)
	replica := newTestServer(t, db, ps, uuid.New())

	ctx := testutil.Context(t, testutil.WaitLong)
	user, org, modelA := seedChatDependencies(t, db)

	chat, err := replica.CreateChat(ctx, chatd.CreateOptions{
		OwnerID:            user.ID,
		OrganizationID:     org.ID,
		Title:              "edit-preserves-model",
		ModelConfigID:      modelA.ID,
		InitialUserContent: []codersdk.ChatMessagePart{codersdk.ChatMessageText("original")},
	})
	require.NoError(t, err)

	initial, err := db.GetChatMessagesByChatID(ctx, database.GetChatMessagesByChatIDParams{
		ChatID:  chat.ID,
		AfterID: 0,
	})
	require.NoError(t, err)
	require.Len(t, initial, 1)

	result, err := replica.EditMessage(ctx, chatd.EditMessageOptions{
		ChatID:          chat.ID,
		EditedMessageID: initial[0].ID,
		Content:         []codersdk.ChatMessagePart{codersdk.ChatMessageText("edited")},
	})
	require.NoError(t, err)
	require.True(t, result.Message.ModelConfigID.Valid)
	require.Equal(t, modelA.ID, result.Message.ModelConfigID.UUID)

	storedChat, err := db.GetChatByID(ctx, chat.ID)
	require.NoError(t, err)
	require.Equal(t, modelA.ID, storedChat.LastModelConfigID,
		"edit without model override must not change last_model_config_id")
}

// TestEditMessageRejectsUnknownModelConfig verifies the edit handler
// returns ErrInvalidModelConfigID when the requested model does not