public void TestComplexExpression()
{
const string VAR_X = "x";
const string VAR_Y = "y";
const string VAR_Z = "z";
var ctx = new Context();
ctx.SetValue(VAR_X, true);
ctx.SetValue(VAR_Y, true);
ctx.SetValue(VAR_Z, false);
var constExp = new ConstExpression(TRUE_TOKEN);
var unaryExp = new UnaryExpression(constExp);
Assert.AreEqual(false, unaryExp.Interpret(ctx));
var binaryExp =
new BinaryExpression(
new BinaryExpression(VAR_X,
BinaryOp.And,
unaryExp),
BinaryOp.Or,
new BinaryExpression(new UnaryExpression(VAR_Y),
BinaryOp.And,
VAR_Z));
Assert.AreEqual(false, binaryExp.Interpret(ctx));
}
public void TestBinaryOrVar()
{
const string VAR_X = "x";
const string VAR_Y = "y";
const string VAR_Z = "z";
var ctx = new Context();
ctx.SetValue(VAR_X, false);
ctx.SetValue(VAR_Y, true);
ctx.SetValue(VAR_Z, false);
var binary = new BinaryExpression(VAR_X, BinaryOp.Or, VAR_Y);
Assert.AreEqual(true, binary.Interpret(ctx));
binary = new BinaryExpression(VAR_X, BinaryOp.Or, VAR_Z);
Assert.AreEqual(false, binary.Interpret(ctx));
}
public void TestUnaryVar()
{
const string VAR_NAME = "x";
var ctx = new Context();
ctx.SetValue(VAR_NAME, false);
var unary = new UnaryExpression(VAR_NAME);
Assert.AreEqual(true, unary.Interpret(ctx));
}