How to use the file Asserts in Nunit and check the files are present or not

Question

how to use the file Asserts in Nunit and check the files are present or not.Need some examples for clear and basic understanding.Can any one please help me

Answer 1

NUnit 3.0 includes a FileOrDirectoryExistsConstraint.

var filePath = "C:\pathtofile.txt";
Assert.That(filePath, Does.Exist);

Answer 2

You should use:

var fileName = @"C:\somedirectory\somefile.txt";

Assert.IsTrue(File.Exists(fileName));

FileAssert can be only used for comparison of two actual files from disc of from some abstract stream