private Expression <Action> GetActionForConstant(ConstantExpression constantExpression, Expression resultExpression, ExpressionType expressionType, string lambdaString) { if (constantExpression.Value == null) { if (expressionType == ExpressionType.Equal) { return(AssertBuilder.GetIsNullAction(resultExpression, lambdaString)); } else { return(AssertBuilder.GetIsNotNullAction(resultExpression, lambdaString)); } } var value = (bool)constantExpression.Value; if (expressionType == ExpressionType.NotEqual) { value = !value; } return(value ? AssertBuilder.GetIsTrueAction(resultExpression, lambdaString) : AssertBuilder.GetIsFalseAction(resultExpression, lambdaString)); }