public void ExecuteCompositeCommand()
{
SetCommand command1 = new SetCommand("foo", new ConstantExpression("bar"));
SetCommand command2 = new SetCommand("one", new ConstantExpression(1));
CompositeCommand command = new CompositeCommand();
command.AddCommand(command1);
command.AddCommand(command2);
Machine machine = new Machine();
command.Execute(machine.Environment);
Assert.AreEqual("bar", machine.Environment.GetValue("foo"));
Assert.AreEqual(1, machine.Environment.GetValue("one"));
Assert.IsNotNull(command.Commands);
}
public void ExecuteCompositeCommandWithReturn()
{
SetCommand command1 = new SetCommand("foo", new ConstantExpression("bar"));
ReturnCommand command2 = new ReturnCommand(new ConstantExpression("spam"));
SetCommand command3 = new SetCommand("one", new ConstantExpression(1));
CompositeCommand command = new CompositeCommand();
command.AddCommand(command1);
command.AddCommand(command2);
command.AddCommand(command3);
Machine machine = new Machine();
BindingEnvironment environment = new BindingEnvironment(machine.Environment);
command.Execute(environment);
Assert.AreEqual("bar", environment.GetValue("foo"));
Assert.IsNull(environment.GetValue("one"));
Assert.IsTrue(environment.HasReturnValue());
Assert.AreEqual("spam", environment.GetReturnValue());
Assert.IsNotNull(command.Commands);
}
public void ExecuteFunctionWithReturn()
{
IList<Parameter> parameters = new Parameter[] { new Parameter("a", null, false), new Parameter("b", null, false) };
CompositeCommand body = new CompositeCommand();
body.AddCommand(new ReturnCommand(new BinaryOperatorExpression(new NameExpression("a"), new NameExpression("b"), BinaryOperator.Add)));
Machine machine = new Machine();
StringWriter writer = new StringWriter();
machine.Output = writer;
DefinedFunction func = new DefinedFunction("foo", parameters, body, null);
var result = func.Apply(machine.Environment, new object[] { 1, 2 }, null);
Assert.IsNotNull(result);
Assert.AreEqual(3, result);
}
public void ExecuteFunctionWithPrint()
{
IList<Parameter> parameters = new Parameter[] { new Parameter("a", null, false), new Parameter("b", null, false) };
CompositeCommand body = new CompositeCommand();
body.AddCommand(new ExpressionCommand(new CallExpression(new NameExpression("print"), new IExpression[] { new NameExpression("a") })));
body.AddCommand(new ExpressionCommand(new CallExpression(new NameExpression("print"), new IExpression[] { new NameExpression("b") })));
Machine machine = new Machine();
StringWriter writer = new StringWriter();
machine.Output = writer;
DefinedFunction func = new DefinedFunction("foo", parameters, body, machine.Environment);
func.Apply(machine.Environment, new object[] { 1, 2 }, null);
Assert.AreEqual("1\r\n2\r\n", writer.ToString());
}