public void ToImmutableTree_WithParenthesesAndValue_ReturnsTreeWithParenthesesAndValue()
{
IEquationBuilder builder = new EquationBuilder();
builder = builder.Parentheses(b => b.Value(3));
var tree = (builder as EquationBuilder).ToImmutableTree();
var parenthesis = tree.GetChildren(tree.GetRoot()).First();
var value = tree.GetChildren(parenthesis).First();
Assert.AreEqual("()", tree.ValueOf(parenthesis));
Assert.AreEqual("3", tree.ValueOf(value));
}
public void Parentheses_WithExpressionAndFactory_AllowsCreatingNewItemsInsideExpression()
{
var id = new Mock<IIdentifier>().Object;
var item = new Mock<IItem>().Object;
var factory = new Mock<IFactory>(MockBehavior.Strict);
factory.Setup(o => o.CanCreate(id)).Returns(true);
factory.Setup(o => o.Create(id)).Returns(item);
IEquationBuilder builder = new EquationBuilder(new[] { factory.Object });
builder = builder.Parentheses(b => b.CreateItem(id));
factory.VerifyAll();
}