public void Should_evaluate_true_for_true()
{
var inputNode = new TrueNode();
var evaluator = new BooleanEvaluator();
var result = evaluator.Eval(inputNode);
result.ShouldBeOfType <TrueNode>();
}
public void Should_evaluate_false_for_nil()
{
var inputNode = new NilNode();
var evaluator = new BooleanEvaluator();
var result = evaluator.Eval(inputNode);
result.ShouldBeOfType <FalseNode>();
}
public void Should_evaluate_false_for_invalid_number_node()
{
var inputNode = new NumberNode("abc");
var evaluator = new BooleanEvaluator();
var result = evaluator.Eval(inputNode);
result.ShouldBeOfType <FalseNode>();
}
public void Should_evaluate_false_for_null_string_node()
{
var inputNode = new StringNode(null);
var evaluator = new BooleanEvaluator();
var result = evaluator.Eval(inputNode);
result.ShouldBeOfType <FalseNode>();
}
public void Should_evaluate_true_for_non_empty_string_node()
{
var inputNode = new StringNode("abc");
var evaluator = new BooleanEvaluator();
var result = evaluator.Eval(inputNode);
result.ShouldBeOfType <TrueNode>();
}
public void Should_evaluate_true_for_a_non_zero_number_node()
{
var inputNode = new NumberNode("1");
var evaluator = new BooleanEvaluator();
var result = evaluator.Eval(inputNode);
result.ShouldBeOfType <TrueNode>();
}
