Resolve previous artifacts from commit declarations

internal/adapters/storage/fake.go

@@ -19,10 +19,11 @@ import (
 type FakeBackend struct {
 	mu sync.RWMutex
 
-	Objects   map[string]FakeObject
-	Uploads   []FakeUploadCall
-	Downloads []FakeDownloadCall
-	Reads     []FakeReadCall
+	Objects    map[string]FakeObject
+	Uploads    []FakeUploadCall
+	Downloads  []FakeDownloadCall
+	Reads      []FakeReadCall
+	ExistsKeys []string
 
 	ListErr      error
 	DownloadErr  error
@@ -323,8 +324,12 @@ func (f *FakeBackend) Exists(ctx context.Context, key string) (bool, error) {
 	if f.ExistsErr != nil {
 		return false, f.ExistsErr
 	}
+	normalizedKey := normalizeObjectKey(key)
+	f.mu.Lock()
+	f.ExistsKeys = append(f.ExistsKeys, normalizedKey)
+	f.mu.Unlock()
 	f.mu.RLock()
-	_, ok := f.Objects[normalizeObjectKey(key)]
+	_, ok := f.Objects[normalizedKey]
 	f.mu.RUnlock()
 	return ok, nil
 }