public void TestSelectWhenTrowingExceptions()
{
List <Employee> employees = null;
Func <Employee, bool> myFunc = (x) => x.FirstName.StartsWith('P');
var selectedEmployees = LINQFunctions.Select(employees, p => myFunc(p));
Assert.Throws <ArgumentNullException>(() => selectedEmployees.Count());
}
public void TestSelect()
{
var employees = Employee.GetEmployees();
Func <Employee, bool> myFunc = (x) => x.FirstName.StartsWith('P');
var selectedEmployees = LINQFunctions.Select(employees, p => myFunc(p));
int counter = 0;
foreach (var current in selectedEmployees)
{
if (current)
{
counter++;
}
}
Assert.Equal(2, counter);
}