defer func() {
		if recover() == nil {
			t.Fatalf("unlock of unlocked RWMutex did not panic")
		}
	}()
	mu := NewDRWMutex(ds, "test")
	mu.Unlock(context.Background())
}

// Borrowed from rwmutex_test.go
func TestUnlockPanic2(t *testing.T) {
	mu := NewDRWMutex(ds, "test-unlock-panic-2")
	defer func() {
		if recover() == nil {
			t.Fatalf("unlock of unlocked RWMutex did not panic")
		}

	}

	for _, testCase := range testCases {
		certs, err := ParsePublicCertFile(testCase.certFile)
		if !testCase.expectedErr && err != nil {
			t.Fatalf("error: expected = <nil>, got = %v", err)
		}
		if testCase.expectedErr && err == nil {
			t.Fatal("error: expected err, got = <nil>")
		}
		if len(certs) != testCase.expectedResultLen {
			t.Fatalf("certs: expected = %v, got = %v", testCase.expectedResultLen, len(certs))
		}

		endpoints, err := expandEndpoints(rawEndpoint)
		if err != nil {
			return nil, err
		}

		key, err := kms.ParseAPIKey(env.Get(EnvKMSAPIKey, ""))
		if err != nil {
			return nil, err
		}

		var rootCAs *x509.CertPool
		if opts != nil && opts.CADir != "" {
			rootCAs, err = certs.GetRootCAs(opts.CADir)
			if err != nil {
				return nil, err
			}
		}

		client, err := kms.NewClient(&kms.Config{

	if err != nil {
		t.Errorf("take err:%v", err)
	}

	// AlterColumn
	err = db.Table("objects").AutoMigrate(&Object3{})
	if err != nil {
		t.Errorf("AutoMigrate err:%v", err)
	}

	err = db.Table("objects").Take(&Object3{}).Error
	if err != nil {
		t.Errorf("take err:%v", err)
	}

	// AddColumn
	err = db.Table("objects").AutoMigrate(&Object4{})
	if err != nil {

}

func TestToErrIsNil(t *testing.T) {
	if toObjectErr(nil) != nil {
		t.Errorf("Test expected to return nil, failed instead got a non-nil value %s", toObjectErr(nil))
	}
	if toStorageErr(nil) != nil {
		t.Errorf("Test expected to return nil, failed instead got a non-nil value %s", toStorageErr(nil))
	}
	ctx := context.Background()
	if toAPIError(ctx, nil) != noError {

		if err != nil || sz == 0 {
			return nil
		}
		if string(found) == key {
			val, _, _ := msgp.ReadBytesZC(buf)
			return val
		}
		// Skip it
		_, buf, err = msgp.ReadBytesZC(buf)
		if err != nil {
			return nil
		}
	}
	return nil
}

// validate checks if the data is valid.
// It does not check integrity of the stored data.
func (x xlMetaInlineData) validate() error {
	if len(x) == 0 {
		return nil
	}

	var s string
	if err = d.DecodeElement(&s, &start); err != nil {
		return err
	}
	*p = Prefix{string: s, set: true}
	return nil
}

// MarshalXML - decodes XML data.
func (p Prefix) MarshalXML(e *xml.Encoder, startElement xml.StartElement) error {
	if !p.set {
		return nil
	}
	return e.EncodeElement(p.string, startElement)
}

// String returns the prefix string

	f, err := os.CreateTemp("", "lock")
	if err != nil {
		t.Fatal(err)
	}
	f.Close()
	defer func() {
		err = os.Remove(f.Name())
		if err != nil {
			t.Fatal(err)
		}
	}()

	// lock the file
	l, err := LockedOpenFile(f.Name(), os.O_WRONLY, 0o600)
	if err != nil {
		t.Fatal(err)
	}

	// unlock the file
	if err = l.Close(); err != nil {
		t.Fatal(err)
	}

	for {
		stream, err := sr.NextStream()
		if err != nil {
			if err == io.EOF {
				if extracted {
					return nil
				}
				return errors.New("no data found on stream")
			}
			if errors.Is(err, estream.ErrNoKey) {
				if stream.Name == "inspect.zip" {
					return errors.New("incorrect private key")
				}
				if err := stream.Skip(); err != nil {
					return fmt.Errorf("stream skip: %w", err)
				}
				continue

	if atomic.LoadUint32(&l.done) == 0 {
		return l.do(f)
	}
	return nil
}

func (l *Init) do(f func() error) error {
	l.m.Lock()
	defer l.m.Unlock()
	if atomic.LoadUint32(&l.done) == 0 {
		if err := f(); err != nil {
			return err
		}
		// Mark as done only when f() is successful
		atomic.StoreUint32(&l.done, 1)
	}
	return nil
}