public void EqualNullNotNull()
{
var lexpr = new ConstantExpression(null);
var rexpr = new ConstantExpression(42);
var expr = new BinaryOperatorExpression(BinaryOperator.Equal, lexpr, rexpr);
Assert.AreEqual(false, expr.Evaluate(null));
}
public void DivideIntegers()
{
var lexpr = new ConstantExpression(84);
var rexpr = new ConstantExpression(2);
var expr = new BinaryOperatorExpression(BinaryOperator.Divide, lexpr, rexpr);
Assert.AreEqual(42.0, expr.Evaluate(null));
}
public void EqualInteger()
{
var lexpr = new ConstantExpression(42);
var rexpr = new ConstantExpression(42);
var expr = new BinaryOperatorExpression(BinaryOperator.Equal, lexpr, rexpr);
Assert.AreEqual(true, expr.Evaluate(null));
}
public void SubtractIntegers()
{
var lexpr = new ConstantExpression(44);
var rexpr = new ConstantExpression(2);
var expr = new BinaryOperatorExpression(BinaryOperator.Subtract, lexpr, rexpr);
Assert.AreEqual(42, expr.Evaluate(null));
}
public void MultiplyIntegers()
{
var lexpr = new ConstantExpression(21);
var rexpr = new ConstantExpression(2);
var expr = new BinaryOperatorExpression(BinaryOperator.Multiply, lexpr, rexpr);
Assert.AreEqual(42, expr.Evaluate(null));
}
public void GreaterInteger()
{
var lexpr = new ConstantExpression(42);
var rexpr = new ConstantExpression(42);
var expr = new BinaryOperatorExpression(BinaryOperator.Greater, lexpr, rexpr);
Assert.AreEqual(false, expr.Evaluate(null));
}
public void EvaluateMultiplyExpression()
{
BinaryExpression expression = new BinaryOperatorExpression(new ConstantExpression(2), new ConstantExpression(3), BinaryOperator.Multiply);
Assert.IsNotNull(expression);
Assert.IsNotNull(expression.Left);
Assert.IsNotNull(expression.Right);
Assert.AreEqual(6, expression.Evaluate(new BindingEnvironment()));
}
public void EvaluateSubtractExpression()
{
BinaryExpression expression = new BinaryOperatorExpression(new ConstantExpression(1), new ConstantExpression(2), BinaryOperator.Subtract);
Assert.IsNotNull(expression);
Assert.IsNotNull(expression.Left);
Assert.IsNotNull(expression.Right);
Assert.AreEqual(-1, expression.Evaluate(new BindingEnvironment()));
}
public void EvaluateDivideExpression()
{
BinaryExpression expression = new BinaryOperatorExpression(new ConstantExpression(6), new ConstantExpression(3), BinaryOperator.Divide);
Assert.IsNotNull(expression);
Assert.IsNotNull(expression.Left);
Assert.IsNotNull(expression.Right);
Assert.AreEqual(2, expression.Evaluate(new BindingEnvironment()));
}
public void EvaluateMultiplyExpressionWithLeftString()
{
BinaryExpression expression = new BinaryOperatorExpression(new ConstantExpression("spam"), new ConstantExpression(3), BinaryOperator.Multiply);
Assert.IsNotNull(expression);
Assert.IsNotNull(expression.Left);
Assert.IsNotNull(expression.Right);
Assert.AreEqual("spamspamspam", expression.Evaluate(new BindingEnvironment()));
}
public void EvaluateDivideToFloatExpression()
{
BinaryExpression expression = new BinaryOperatorExpression(new ConstantExpression(4), new ConstantExpression(5), BinaryOperator.Divide);
Assert.IsNotNull(expression);
Assert.IsNotNull(expression.Left);
Assert.IsNotNull(expression.Right);
Assert.AreEqual(0.8, expression.Evaluate(new BindingEnvironment()));
}
public void EvaluateAddExpression()
{
BinaryExpression expression = new BinaryOperatorExpression(new ConstantExpression(1), new ConstantExpression(2), BinaryOperator.Add);
Assert.IsNotNull(expression);
Assert.IsNotNull(expression.Left);
Assert.IsNotNull(expression.Right);
Assert.AreEqual(3, expression.Evaluate(new BindingEnvironment()));
}