public void IsCharNotSymbol()
{
//Arrange
UnitTestMethods tester = new UnitTestMethods();
string lettersAndNums = "0123456789abcdefghijklmnopqrstuvwxyz";
foreach (char character in lettersAndNums)
{
//Act
bool isLetterNumActual = tester.IsCharNotSymbol(character);
//Assert
Assert.True(isLetterNumActual);
}
}