Unit tests fail if terminal window is not exactly 80 characters wide

[rmunn]

#589 adds a check for sut.Settings.MaximumDisplayWidth.Should().Be(80), but that will fail if you run dotnet test in a Linux terminal window that's a different size.

To Reproduce:

1. Clone the repo
2. Open a Linux terminal window and don't resize it, so it's 80x24 (the usual default)
3. Run dotnet test. It works.
4. Resize the terminal window so it's one character wider
5. Run dotnet test. It fails with "Expected sut.Settings.MaximumDisplayWidth to be 80, but found 81."

Note that on my dev laptop, I habitually run terminal windows at maximum screen width, so for me the exception was "Expected sut.Settings.MaximumDisplayWidth to be 80, but found 272."

Solution:

Don't assume any particular value for MaximumDisplayWidth; just check that it's greater than 1.

[rmunn]

The problem line is this one, BTW.

[moh-hassan]

Thanks @rmunn
I fixed the issue with a PR .

[moh-hassan]

Linux is added as other CI and all tests passed in Ubuntu 18.04

[rmunn]

I can verify that #597 fixes this issue on my development laptop.