test: покрыть файловое хранилище и описать библиотеку

store_file_test.go

@@ -0,0 +1,47 @@
+package mila
+
+import (
+	"context"
+	"path/filepath"
+	"testing"
+)
+
+func TestFileStorePersistsAndLoadsState(t *testing.T) {
+	path := filepath.Join(t.TempDir(), "bvk_content.json")
+	ctx := context.Background()
+
+	first := NewFileStore(path)
+	state := ContentState{
+		Route:    "3",
+		Text:     "Гостиный двор",
+		Template: "main",
+	}
+	if err := first.Set(ctx, state); err != nil {
+		t.Fatalf("set state: %v", err)
+	}
+
+	second := NewFileStore(path)
+	got, err := second.Get(ctx)
+	if err != nil {
+		t.Fatalf("get state: %v", err)
+	}
+
+	if got.Route != state.Route || got.Text != state.Text || got.Template != state.Template {
+		t.Fatalf("unexpected state: %+v", got)
+	}
+	if got.UpdatedAt.IsZero() != state.UpdatedAt.IsZero() {
+		t.Fatalf("unexpected updated_at value: %s", got.UpdatedAt)
+	}
+}
+
+func TestFileStoreMissingFileReturnsNotReady(t *testing.T) {
+	store := NewFileStore(filepath.Join(t.TempDir(), "missing.json"))
+
+	_, err := store.Get(context.Background())
+	if err == nil {
+		t.Fatal("expected error")
+	}
+	if err != ErrNotReady {
+		t.Fatalf("expected ErrNotReady, got %v", err)
+	}
+}