public void VariableReassignmentTest()
{
// Arrange
StringBuilder scriptBuilder = new StringBuilder();
scriptBuilder.AppendLine("a = 1");
scriptBuilder.AppendLine("bcd = 200");
scriptBuilder.AppendLine("a = 100");
TurtleScriptInterpreter interpreter = new TurtleScriptInterpreter(scriptBuilder.ToString());
// Act
bool success = interpreter.Execute();
// Assert
Assert.IsTrue(success, interpreter.ErrorMessage);
Assert.AreEqual(2, interpreter.Variables.Count);
TurtleScriptValue variableValue = interpreter.Variables["a"];
Assert.AreEqual(100, variableValue.NumericValue);
variableValue = interpreter.Variables["bcd"];
Assert.AreEqual(200, variableValue.NumericValue);
}
public void IfElseStatementTrue()
{
// Arrange
StringBuilder scriptBuilder = new StringBuilder();
scriptBuilder.AppendLine("b = 15");
scriptBuilder.AppendLine("if b > 10 do");
scriptBuilder.AppendLine(" b = 20");
scriptBuilder.AppendLine(" b = b * 2");
scriptBuilder.AppendLine("else do");
scriptBuilder.AppendLine(" b = 10");
scriptBuilder.AppendLine("end");
TurtleScriptInterpreter interpreter = new TurtleScriptInterpreter(scriptBuilder.ToString());
// Act
bool success = interpreter.Execute();
// Assert
Assert.IsTrue(success, interpreter.ErrorMessage);
TurtleScriptValue variableValue = interpreter.Variables["b"];
Assert.AreEqual(40.0, variableValue.NumericValue);
}
public TurtleScriptValue Square(List <TurtleScriptValue> parameters)
{
if (parameters.Count == 1)
{
double value = parameters[0].NumericValue;
TurtleScriptValue returnValue = new TurtleScriptValue(value * value);
return(returnValue);
}
return(TurtleScriptValue.VOID);
}
public TurtleScriptValue Sum(List <TurtleScriptValue> parameters)
{
if (parameters.Count == 3)
{
double value1 = parameters[0].NumericValue;
double value2 = parameters[1].NumericValue;
double value3 = parameters[2].NumericValue;
TurtleScriptValue returnValue = new TurtleScriptValue(value1 + value2 + value3);
return(returnValue);
}
return(TurtleScriptValue.VOID);
}
public void SimpleMultiplication()
{
// Arrange
var script = "a = 5 * 6";
TurtleScriptInterpreter interpreter = new TurtleScriptInterpreter(script);
// Act
bool success = interpreter.Execute();
// Assert
Assert.IsTrue(success, interpreter.ErrorMessage);
TurtleScriptValue variableValue = interpreter.Variables["a"];
Assert.AreEqual(30, variableValue.NumericValue);
}
public void DivisionFirstThenMultiplication()
{
// Arrange
var script = "a = 100 / 2 * 10";
TurtleScriptInterpreter interpreter = new TurtleScriptInterpreter(script);
// Act
bool success = interpreter.Execute();
// Assert
Assert.IsTrue(success, interpreter.ErrorMessage);
TurtleScriptValue variableValue = interpreter.Variables["a"];
Assert.AreEqual(500, variableValue.NumericValue);
}
public void ComplexSubtraction()
{
// Arrange
var script = "a = 10 - 2 - 4";
TurtleScriptInterpreter interpreter = new TurtleScriptInterpreter(script);
// Act
bool success = interpreter.Execute();
// Assert
Assert.IsTrue(success, interpreter.ErrorMessage);
TurtleScriptValue variableValue = interpreter.Variables["a"];
Assert.AreEqual(4, variableValue.NumericValue);
}
public void DivideByZero()
{
// Arrange
var script = "a = 5 / 0";
TurtleScriptInterpreter interpreter = new TurtleScriptInterpreter(script);
// Act
bool success = interpreter.Execute();
// Assert
Assert.IsTrue(success, interpreter.ErrorMessage);
TurtleScriptValue variableValue = interpreter.Variables["a"];
Assert.AreEqual(0, variableValue.NumericValue);
}
public void AssignmentAndReferenceInExpression()
{
// Arrange
StringBuilder scriptBuilder = new StringBuilder();
scriptBuilder.AppendLine("a = 1");
scriptBuilder.AppendLine("b = a + 500");
TurtleScriptInterpreter interpreter = new TurtleScriptInterpreter(scriptBuilder.ToString());
// Act
bool success = interpreter.Execute();
// Assert
Assert.IsTrue(success, interpreter.ErrorMessage);
TurtleScriptValue variableValue = interpreter.Variables["b"];
Assert.AreEqual(501, variableValue.NumericValue);
}
public void AssignmentAndSelfReassignment()
{
// Arrange
StringBuilder scriptBuilder = new StringBuilder();
scriptBuilder.AppendLine("a = 12345");
scriptBuilder.AppendLine("a = a");
TurtleScriptInterpreter interpreter = new TurtleScriptInterpreter(scriptBuilder.ToString());
// Act
bool success = interpreter.Execute();
// Assert
Assert.IsTrue(success, interpreter.ErrorMessage);
TurtleScriptValue variableValue = interpreter.Variables["a"];
Assert.AreEqual(12345, variableValue.NumericValue);
}
public void FunctionDeclarationAfterCall()
{
// Arrange
StringBuilder scriptBuilder = new StringBuilder();
scriptBuilder.AppendLine("MyFunc()");
scriptBuilder.AppendLine("def MyFunc()");
scriptBuilder.AppendLine(" b = 15");
scriptBuilder.AppendLine("end");
TurtleScriptInterpreter interpreter = new TurtleScriptInterpreter(scriptBuilder.ToString());
// Act
bool success = interpreter.Execute();
// Assert
Assert.IsTrue(success, interpreter.ErrorMessage);
TurtleScriptValue variableValue = interpreter.Variables["b"];
Assert.AreEqual(15.0, variableValue.NumericValue);
}
public void FunctionDeclarationAndCallThreeParameters()
{
// Arrange
StringBuilder scriptBuilder = new StringBuilder();
scriptBuilder.AppendLine("def MyFunc(value1, value2, value3)");
scriptBuilder.AppendLine(" b = value1 + value2 - value3");
scriptBuilder.AppendLine("end");
scriptBuilder.AppendLine("MyFunc(100, 200, 50)");
TurtleScriptInterpreter interpreter = new TurtleScriptInterpreter(scriptBuilder.ToString());
// Act
bool success = interpreter.Execute();
// Assert
Assert.IsTrue(success, interpreter.ErrorMessage);
TurtleScriptValue variableValue = interpreter.Variables["b"];
Assert.AreEqual(250, variableValue.NumericValue);
}
public void ThreeParameters()
{
// Arrange
StringBuilder scriptBuilder = new StringBuilder();
scriptBuilder.AppendLine("a = test.sum(2, 4, 6)");
TurtleScriptInterpreter interpreter = new TurtleScriptInterpreter(scriptBuilder.ToString(), new List <ITurtleScriptRuntime>()
{
new SampleRuntime()
});
// Act
bool success = interpreter.Execute();
// Assert
Assert.IsTrue(success, interpreter.ErrorMessage);
TurtleScriptValue variableValue = interpreter.Variables["a"];
Assert.AreEqual(12, variableValue.NumericValue);
}
public void Reverse()
{
// Arrange
StringBuilder scriptBuilder = new StringBuilder();
scriptBuilder.AppendLine("b = 0");
scriptBuilder.AppendLine("for a = 5 to 1 do");
scriptBuilder.AppendLine("b = b + a");
scriptBuilder.AppendLine("end");
TurtleScriptInterpreter interpreter = new TurtleScriptInterpreter(scriptBuilder.ToString());
// Act
bool success = interpreter.Execute();
// Assert
Assert.IsTrue(success, interpreter.ErrorMessage);
TurtleScriptValue variableValue = interpreter.Variables["b"];
Assert.AreEqual(15, variableValue.NumericValue);
}
public void SimpleAssignmentTest()
{
// Arrange
var script = "a = 1";
TurtleScriptInterpreter interpreter = new TurtleScriptInterpreter(script);
// Act
bool success = interpreter.Execute();
// Assert
Assert.IsTrue(success, interpreter.ErrorMessage);
Assert.AreEqual(1, interpreter.Variables.Count);
string variableName = interpreter.Variables.Keys.First();
TurtleScriptValue variableValue = interpreter.Variables[variableName];
Assert.AreEqual("a", variableName);
Assert.AreEqual(1, variableValue.NumericValue);
}
public void FunctionDeclarationAndCallOneParameter()
{
// Arrange
StringBuilder scriptBuilder = new StringBuilder();
scriptBuilder.AppendLine("def MyFunc(myparameter)");
scriptBuilder.AppendLine(" b = myparameter");
scriptBuilder.AppendLine(" myparameter = b * 2");
scriptBuilder.AppendLine("end");
scriptBuilder.AppendLine("MyFunc(10)");
TurtleScriptInterpreter interpreter = new TurtleScriptInterpreter(scriptBuilder.ToString());
// Act
bool success = interpreter.Execute();
// Assert
Assert.IsTrue(success, interpreter.ErrorMessage);
TurtleScriptValue variableValue = interpreter.Variables["myparameter"];
Assert.AreEqual(20, variableValue.NumericValue);
}
public TurtleScriptValue CurrentAngle(List <TurtleScriptValue> parameters)
{
TurtleScriptValue returnValue = new TurtleScriptValue(Turtle.Angle);
return(returnValue);
}
