public void FourFundamentalOperationTestMethod()
{
String expression = @"(1 + 2) * 3 / 4;";
ExpressionCompiler compiler = new ExpressionCompiler();
ExpressionContext context = new ExpressionContext();
Assert.IsTrue(compiler.TryEvaluate(expression, context, out Decimal value) && value == (1 + 2) * 3 / 4);
}
public void LogicalOperationTestMethod()
{
String expression = @"(true || false) && true && 1 > 2;";
ExpressionCompiler compiler = new ExpressionCompiler();
ExpressionContext context = new ExpressionContext();
Assert.IsTrue(compiler.TryEvaluate(expression, context, out Boolean value) && value == ((true || false) && true && 1 > 2));
}
public void FunctionTestMethod()
{
String expression = @"Pow(2, 8);";
ExpressionCompiler compiler = new ExpressionCompiler();
ExpressionContext context = new ExpressionContext();
Assert.IsTrue(compiler.TryEvaluate(expression, context, out Int32 value) && value == Math.Pow(2, 8));
}
public void ConstantTestMethod()
{
String expression = @"PI * Pow(r, 2);";
ExpressionCompiler compiler = new ExpressionCompiler();
ExpressionContext context = new ExpressionContext();
context.Bind("r", 10);
Assert.IsTrue(compiler.TryEvaluate(expression, context, out Decimal value) && value == (Decimal)(Math.PI * Math.Pow(10, 2)));
}
public void VariableTestMethod()
{
String expression = @"result1 = num1 + num2;" +
@"result2 = result1 * 10;" +
@"result2";
ExpressionCompiler compiler = new ExpressionCompiler();
ExpressionContext context = new ExpressionContext();
Int32 num1 = 1;
Int32 num2 = 2;
context.Bind(nameof(num1), num1);
context.Bind(nameof(num2), num2);
Assert.IsTrue(compiler.TryEvaluate(expression, context, out Int32 value) && value == (num1 + num2) * 10 &&
context.TryLookup("result1", out Int32 result1) && result1 == num1 + num2 &&
context.TryLookup("result2", out Int32 result2) && result2 == value);
}