public void ExecuteSimpleForOnEmptyList()
{
ICommand body = new SetCommand("b", new BinaryOperatorExpression(new NameExpression("a"), new NameExpression("b"), BinaryOperator.Add));
BindingEnvironment environment = new BindingEnvironment();
environment.SetValue("b", 0);
ForCommand command = new ForCommand("a", new ConstantExpression(new object[] { }), body);
command.Execute(environment);
Assert.AreEqual(0, environment.GetValue("b"));
}
public void ExecuteSimpleForWithContinue()
{
ICommand ifcmd = new IfCommand(new CompareExpression(ComparisonOperator.Equal, new NameExpression("a"), new ConstantExpression(2)), new ContinueCommand());
ICommand setcmd = new SetCommand("b", new BinaryOperatorExpression(new NameExpression("a"), new NameExpression("b"), BinaryOperator.Add));
ICommand body = new CompositeCommand(new ICommand[] { ifcmd, setcmd });
BindingEnvironment environment = new BindingEnvironment();
environment.SetValue("b", 0);
ForCommand command = new ForCommand("a", new ConstantExpression(new object[] { 1, 2, 3 }), body);
command.Execute(environment);
Assert.AreEqual(4, environment.GetValue("b"));
}
public void RaiseWhenForOverAnInteger()
{
BindingEnvironment environment = new BindingEnvironment();
environment.SetValue("b", 0);
ForCommand command = new ForCommand("a", new ConstantExpression(1), null);
try
{
command.Execute(environment);
Assert.Fail("Exception expected");
}
catch (Exception ex)
{
Assert.IsInstanceOfType(ex, typeof(TypeError));
Assert.AreEqual("'int' object is not iterable", ex.Message);
}
}