public void TestMakeFileSizeToReadableString() { var testMainWindowPresenter = new MainWindowPresenter(); double length = 1000; string expected = "1000 B"; Assert.AreEqual(expected, testMainWindowPresenter.MakeFileSizeToReadableString(length)); length = 1024; expected = "1 KB"; Assert.AreEqual(expected, testMainWindowPresenter.MakeFileSizeToReadableString(length)); }