private static void EvaluateCommands(string text, Context context)
{
Parser parser = new Parser(text);
var result = parser.ParseCommands();
var command = new CompositeCommand(result);
command.Execute(context);
}
public void ParseClosingBraceAsNoCommand()
{
Parser parser = new Parser("}");
Assert.IsNull(parser.ParseCommands());
}
public void ParseTwoCommands()
{
Parser parser = new Parser("a=1;\r\nb=1;");
IList<ICommand> commands = parser.ParseCommands();
Assert.IsNotNull(commands);
Assert.AreEqual(2, commands.Count);
ICommand command = commands[0];
Assert.IsNotNull(command);
Assert.IsInstanceOfType(command, typeof(SetVariableCommand));
SetVariableCommand scommand = (SetVariableCommand)command;
Assert.AreEqual("a", scommand.Name);
Assert.IsInstanceOfType(scommand.Expression, typeof(ConstantExpression));
ConstantExpression cexpr = (ConstantExpression)scommand.Expression;
Assert.AreEqual(1, cexpr.Value);
command = commands[1];
Assert.IsNotNull(command);
Assert.IsInstanceOfType(command, typeof(SetVariableCommand));
scommand = (SetVariableCommand)command;
Assert.AreEqual("b", scommand.Name);
Assert.IsInstanceOfType(scommand.Expression, typeof(ConstantExpression));
cexpr = (ConstantExpression)scommand.Expression;
Assert.AreEqual(1, cexpr.Value);
Assert.IsNull(parser.ParseCommand());
}
public void ParseNoCommands()
{
Parser parser = new Parser("");
Assert.IsNull(parser.ParseCommands());
}