Fix auto pricelist resolution and latest-price selection; update Bible

internal/repository/pricelist_test.go

@@ -126,6 +126,101 @@ func TestGetItems_WarehouseAvailableQtyUsesPrefixResolver(t *testing.T) {
 	}
 }
 
+func TestGetLatestActiveBySource_SkipsPricelistsWithoutItems(t *testing.T) {
+	repo := newTestPricelistRepository(t)
+	db := repo.db
+	ts := time.Now().Add(-time.Minute)
+	source := "test-estimate-skip-empty"
+
+	emptyLatest := models.Pricelist{
+		Source:    source,
+		Version:   "E-empty",
+		CreatedBy: "test",
+		IsActive:  true,
+		CreatedAt: ts.Add(2 * time.Second),
+	}
+	if err := db.Create(&emptyLatest).Error; err != nil {
+		t.Fatalf("create empty pricelist: %v", err)
+	}
+
+	withItems := models.Pricelist{
+		Source:    source,
+		Version:   "E-with-items",
+		CreatedBy: "test",
+		IsActive:  true,
+		CreatedAt: ts,
+	}
+	if err := db.Create(&withItems).Error; err != nil {
+		t.Fatalf("create pricelist with items: %v", err)
+	}
+	if err := db.Create(&models.PricelistItem{
+		PricelistID: withItems.ID,
+		LotName:     "CPU_A",
+		Price:       100,
+	}).Error; err != nil {
+		t.Fatalf("create pricelist item: %v", err)
+	}
+
+	got, err := repo.GetLatestActiveBySource(source)
+	if err != nil {
+		t.Fatalf("GetLatestActiveBySource: %v", err)
+	}
+	if got.ID != withItems.ID {
+		t.Fatalf("expected pricelist with items id=%d, got id=%d", withItems.ID, got.ID)
+	}
+}
+
+func TestGetLatestActiveBySource_TieBreaksByID(t *testing.T) {
+	repo := newTestPricelistRepository(t)
+	db := repo.db
+	ts := time.Now().Add(-time.Minute)
+	source := "test-warehouse-tie-break"
+
+	first := models.Pricelist{
+		Source:    source,
+		Version:   "S-1",
+		CreatedBy: "test",
+		IsActive:  true,
+		CreatedAt: ts,
+	}
+	if err := db.Create(&first).Error; err != nil {
+		t.Fatalf("create first pricelist: %v", err)
+	}
+	if err := db.Create(&models.PricelistItem{
+		PricelistID: first.ID,
+		LotName:     "CPU_A",
+		Price:       101,
+	}).Error; err != nil {
+		t.Fatalf("create first item: %v", err)
+	}
+
+	second := models.Pricelist{
+		Source:    source,
+		Version:   "S-2",
+		CreatedBy: "test",
+		IsActive:  true,
+		CreatedAt: ts,
+	}
+	if err := db.Create(&second).Error; err != nil {
+		t.Fatalf("create second pricelist: %v", err)
+	}
+	if err := db.Create(&models.PricelistItem{
+		PricelistID: second.ID,
+		LotName:     "CPU_A",
+		Price:       102,
+	}).Error; err != nil {
+		t.Fatalf("create second item: %v", err)
+	}
+
+	got, err := repo.GetLatestActiveBySource(source)
+	if err != nil {
+		t.Fatalf("GetLatestActiveBySource: %v", err)
+	}
+	if got.ID != second.ID {
+		t.Fatalf("expected later inserted pricelist id=%d, got id=%d", second.ID, got.ID)
+	}
+}
+
 func newTestPricelistRepository(t *testing.T) *PricelistRepository {
 	t.Helper()