public void GetLongestStringShouldBeCorrect(string longest, params string[] values)
{
// arrange
var c = new StringCollection(values);
// act
var result = c.GetLongestString();
// assert
Assert.Equal(longest, result);
}
public void GetLongestStringWithEmptyShouldReturnNull()
{
// arrange
var c = new StringCollection();
// act
var result = c.GetLongestString();
// assert
Assert.Null(result);
}