public void Throws_If_Adding_Empty_File_Name(string fileName)
{
var dirBuilder = new DirectoryBuilder(Path.GetTempPath());
var exception = Assert.Throws <ArgumentException>(() =>
{
dirBuilder.AddFile(fileName);
});
Assert.Equal("fileName", exception.ParamName);
Assert.Contains("File name can't be null or empty", exception.Message);
exception = Assert.Throws <ArgumentException>(() =>
{
dirBuilder.AddFile(fileName);
});
Assert.Equal("fileName", exception.ParamName);
Assert.Contains("File name can't be null or empty", exception.Message);
}