public void op_NormalizeWhiteSpace()
{
var expected = new MutableString(' ', Characters.WhiteSpace.Count);
var value = Characters.WhiteSpace.Aggregate(string.Empty,
(current,
c) => current + c);
var actual = new MutableString(value);
Assert.Same(actual, actual.NormalizeWhiteSpace());
Assert.Equal(expected, actual);
}
