public void TestReplaceVariablesAppendCondition()
{
var variable = new VariableExpression("variable");
var condition = new ComparisonExpression(new IntegerConstantExpression(1), ComparisonOperation.LessThan, new IntegerConstantExpression(2));
var append = new ConditionalExpression(variable, ConditionalOperation.And, condition);
var expr = new AssignmentExpression(variable, append);
var scope = new InterpreterScope();
// variable doesn't have a current value, logical comparison not supported
ExpressionBase result;
Assert.That(expr.ReplaceVariables(scope, out result), Is.False);
Assert.That(result, Is.InstanceOf <ParseErrorExpression>());
Assert.That(((ParseErrorExpression)result).Message, Is.EqualTo("Unknown variable: variable"));
}
public void TestReplaceVariablesAppendMathematic()
{
var variable = new VariableExpression("variable");
var value = new IntegerConstantExpression(1);
var append = new MathematicExpression(variable, MathematicOperation.Add, value);
var expr = new AssignmentExpression(variable, append);
var scope = new InterpreterScope();
// variable doesn't have a current value, addition not supported
ExpressionBase result;
Assert.That(expr.ReplaceVariables(scope, out result), Is.False);
Assert.That(result, Is.InstanceOf <ParseErrorExpression>());
Assert.That(((ParseErrorExpression)result).Message, Is.EqualTo("Unknown variable: variable"));
}
public void TestReplaceVariables()
{
var variable = new VariableExpression("variable");
var variable2 = new VariableExpression("variable2");
var value = new IntegerConstantExpression(99);
var expr = new AssignmentExpression(variable, variable2);
var scope = new InterpreterScope();
scope.AssignVariable(variable2, value);
ExpressionBase result;
Assert.That(expr.ReplaceVariables(scope, out result), Is.True);
Assert.That(result, Is.InstanceOf <AssignmentExpression>());
Assert.That(((AssignmentExpression)result).Variable, Is.EqualTo(variable));
Assert.That(((AssignmentExpression)result).Value, Is.EqualTo(value));
}