feat: unit tests

Signed-off-by: skidoodle <contact@albert.lol>

internal/app/storage_test.go

@@ -0,0 +1,85 @@
+package app
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+	"time"
+)
+
+func TestCleanup_AbandonedMerge(t *testing.T) {
+	tmpDir := t.TempDir()
+	tmpStorage := filepath.Join(tmpDir, "tmp")
+	os.MkdirAll(tmpStorage, 0700)
+
+	app := &App{
+		Conf: Config{StorageDir: tmpDir},
+		Logger: discardLogger(),
+	}
+
+	abandonedFile := filepath.Join(tmpStorage, "m_abandoned_upload_id")
+	if err := os.WriteFile(abandonedFile, []byte("partial data"), 0600); err != nil {
+		t.Fatal(err)
+	}
+
+	oldTime := time.Now().Add(-TempExpiry - time.Hour)
+	if err := os.Chtimes(abandonedFile, oldTime, oldTime); err != nil {
+		t.Fatal(err)
+	}
+
+	app.CleanTemp(tmpStorage)
+
+	if _, err := os.Stat(abandonedFile); !os.IsNotExist(err) {
+		t.Error("Cleanup failed to remove abandoned merge file from crashed session")
+	}
+}
+
+func TestCleanup_AbandonedChunks(t *testing.T) {
+	tmpDir := t.TempDir()
+	tmpStorage := filepath.Join(tmpDir, "tmp")
+	os.MkdirAll(tmpStorage, 0700)
+
+	app := &App{
+		Conf: Config{StorageDir: tmpDir},
+		Logger: discardLogger(),
+	}
+
+	chunkDir := filepath.Join(tmpStorage, "some_upload_id")
+	os.MkdirAll(chunkDir, 0700)
+	os.WriteFile(filepath.Join(chunkDir, "0"), []byte("chunk data"), 0600)
+
+	oldTime := time.Now().Add(-TempExpiry - time.Hour)
+	os.Chtimes(chunkDir, oldTime, oldTime)
+
+	app.CleanTemp(tmpStorage)
+
+	if _, err := os.Stat(chunkDir); !os.IsNotExist(err) {
+		t.Error("Cleanup failed to remove abandoned chunk directory")
+	}
+}
+
+func TestCleanup_ExpiredStorage(t *testing.T) {
+	storageDir := t.TempDir()
+	app := &App{
+		Conf: Config{
+			StorageDir: storageDir,
+			MaxMB:      100,
+		},
+		Logger: discardLogger(),
+	}
+
+	filename := "large_file_id"
+	path := filepath.Join(storageDir, filename)
+	f, _ := os.Create(path)
+	f.Truncate(100 * MegaByte) // Max size
+	f.Close()
+
+	oldTime := time.Now().Add(-MinRetention - time.Hour)
+	os.Chtimes(path, oldTime, oldTime)
+
+	app.CleanStorage(storageDir)
+
+	if _, err := os.Stat(path); !os.IsNotExist(err) {
+		t.Error("Cleanup failed to remove expired large file")
+	}
+}