public void ExecuteForCommand() { ICommand setX = new SetVariableCommand("x", new ConstantExpression(0)); ICommand setY = new SetVariableCommand("y", new ConstantExpression(0)); List<ICommand> commands = new List<ICommand>(); commands.Add(setX); commands.Add(setY); ICommand initialCommand = new CompositeCommand(commands); IExpression condition = new CompareExpression(ComparisonOperator.Less, new VariableExpression("x"), new ConstantExpression(6)); IExpression addXtoY = new ArithmeticBinaryExpression(ArithmeticOperator.Add, new VariableExpression("y"), new VariableExpression("x")); ICommand addToY = new SetVariableCommand("y", addXtoY); ICommand endCommand = new SetVariableCommand("x", new ArithmeticBinaryExpression(ArithmeticOperator.Add, new VariableExpression("x"), new ConstantExpression(1))); ForCommand forcmd = new ForCommand(initialCommand, condition, endCommand, addToY); Context context = new Context(); context.SetValue("y", null); forcmd.Execute(context); Assert.AreEqual(15, context.GetValue("y")); }
public void ExecuteCompositeCommand() { Context context = new Context(); SetVariableCommand command1 = new SetVariableCommand("a", new ConstantExpression("bar")); SetVariableCommand command2 = new SetVariableCommand("b", new ConstantExpression(1)); SetVariableCommand command3 = new SetVariableCommand("c", new VariableExpression("a")); List<ICommand> commands = new List<ICommand>(); commands.Add(command1); commands.Add(command2); commands.Add(command3); CompositeCommand command = new CompositeCommand(commands); command.Execute(context); Assert.AreEqual("bar", context.GetValue("a")); Assert.AreEqual(1, context.GetValue("b")); Assert.AreEqual("bar", context.GetValue("c")); }
public void ExecuteForEachCommand() { IExpression addToX = new ArithmeticBinaryExpression(ArithmeticOperator.Add, new VariableExpression("b"), new VariableExpression("a")); ICommand setX = new SetVariableCommand("a", addToX); IExpression values = new ConstantExpression(new int[] { 1, 2, 3 }); ForEachCommand foreachcmd = new ForEachCommand("b", values, setX); Context context = new Context(); context.SetValue("a", 0); foreachcmd.Execute(context); Assert.AreEqual(6, context.GetValue("a")); }
public void ExecuteWhileCommand() { IExpression incrementX = new ArithmeticBinaryExpression(ArithmeticOperator.Add, new ConstantExpression(1), new VariableExpression("a")); IExpression decrementY = new ArithmeticBinaryExpression(ArithmeticOperator.Subtract, new VariableExpression("b"), new ConstantExpression(1)); ICommand setX = new SetVariableCommand("a", incrementX); ICommand setY = new SetVariableCommand("b", decrementY); List<ICommand> commands = new List<ICommand>(); commands.Add(setX); commands.Add(setY); ICommand command = new CompositeCommand(commands); IExpression yexpr = new VariableExpression("b"); WhileCommand whilecmd = new WhileCommand(yexpr, command); Context context = new Context(); context.SetValue("a", 0); context.SetValue("b", 5); whilecmd.Execute(context); Assert.AreEqual(0, context.GetValue("b")); Assert.AreEqual(5, context.GetValue("a")); }
public void ExecuteSetLocalVariableCommandWithVariable() { Context context = new Context(); SetVariableCommand command = new SetVariableCommand("a", new ConstantExpression("bar")); command.Execute(context); Assert.AreEqual("bar", context.GetValue("a")); }
public void ExecuteIfCommandWhenTrue() { IExpression condition = new ConstantExpression(true); ICommand setCommand = new SetVariableCommand("a", new ConstantExpression(1)); IfCommand command = new IfCommand(condition, setCommand); Context context = new Context(); command.Execute(context); Assert.AreEqual(1, context.GetValue("a")); }
public void ExecuteIfCommandElseWhenFalse() { IExpression condition = new ConstantExpression(false); ICommand setXCommand = new SetVariableCommand("a", new ConstantExpression(1)); ICommand setYCommand = new SetVariableCommand("b", new ConstantExpression(2)); IfCommand command = new IfCommand(condition, setXCommand, setYCommand); Context context = new Context(); command.Execute(context); Assert.AreEqual(Undefined.Instance, context.GetValue("a")); Assert.AreEqual(2, context.GetValue("b")); }