freeAtEnd := r.Free()
	if freeAtStart != freeAtEnd {
		t.Errorf("expected %v free ports but got %v", freeAtStart, freeAtEnd)
	}
}

// TestDryRunAllocateNext tests the AllocateNext function in dry run mode
func TestDryRunAllocateNext(t *testing.T) {
	pr, err := net.ParsePortRange("10000-10200")
	if err != nil {
		t.Fatal(err)
	}

	// Allocate some ports before calling