How do I make my string compare not sensitive to (ignore) minor differences in white space?

Question

I have some tests that check strings that are displayed to the user.

I don’t wish the test to fail to due to changes in the indentations or line breaks etc. So I am

Answer 1

Writing a custom compare would be tricky if you need it just to do this for whitespace. I would suggest using regex to normalize, i.e.

private static readonly Regex normalizeSpace =
        new Regex(@"\s+", RegexOptions.Compiled);
...
string s = normalizeSpace.Replace(input, " ");

Obviously normalize both operands and then test for equality as normal.