core: use local watch-order store

internal/watchorder/store_test.go

@@ -0,0 +1,72 @@
+package watchorder
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func TestLoadFromFile_Success(t *testing.T) {
+	temporaryDirectory := t.TempDir()
+	filePath := filepath.Join(temporaryDirectory, "watch_order.json")
+
+	content := `{
+  "1": [{"id": 1, "type": "TV", "title": "One"}],
+  "2": [{"id": 2, "type": "Movie", "title": "Two"}]
+}`
+
+	if err := os.WriteFile(filePath, []byte(content), 0o644); err != nil {
+		t.Fatalf("failed to write file: %v", err)
+	}
+
+	store, err := LoadFromFile(filePath)
+	if err != nil {
+		t.Fatalf("expected no error, got %v", err)
+	}
+
+	if store.Len() != 2 {
+		t.Fatalf("expected 2 ids, got %d", store.Len())
+	}
+
+	entries, ok := store.Get(1)
+	if !ok {
+		t.Fatalf("expected id 1 to exist")
+	}
+
+	if len(entries) != 1 || entries[0].ID != 1 {
+		t.Fatalf("unexpected entries for id 1: %+v", entries)
+	}
+}
+
+func TestLoadFromFile_InvalidIDKey(t *testing.T) {
+	temporaryDirectory := t.TempDir()
+	filePath := filepath.Join(temporaryDirectory, "watch_order.json")
+
+	if err := os.WriteFile(filePath, []byte(`{"abc": []}`), 0o644); err != nil {
+		t.Fatalf("failed to write file: %v", err)
+	}
+
+	_, err := LoadFromFile(filePath)
+	if err == nil {
+		t.Fatalf("expected error for invalid id key")
+	}
+}
+
+func TestLoadFromFile_WrappedPayload(t *testing.T) {
+	temporaryDirectory := t.TempDir()
+	filePath := filepath.Join(temporaryDirectory, "watch_order.json")
+
+	content := `{"data":{"10":[{"id":10,"type":"TV","title":"Ten"}]}}`
+	if err := os.WriteFile(filePath, []byte(content), 0o644); err != nil {
+		t.Fatalf("failed to write file: %v", err)
+	}
+
+	store, err := LoadFromFile(filePath)
+	if err != nil {
+		t.Fatalf("expected no error, got %v", err)
+	}
+
+	if store.Len() != 1 {
+		t.Fatalf("expected 1 id, got %d", store.Len())
+	}
+}