public void CreateExpression_DateOutsideOfWindowAndIsMonday_BuildsExpression(int year, int month, int day, bool validates, int numberOfErrorMsg)
{
// Test: (DateTime d) => (d < floorDate | d > ceilingDate) & d.DayOfWeek == DayOfWeek.Monday
var floorDate = new DateTime(2010, 2, 1);
var ceilingDate = new DateTime(2010, 3, 1);
var testDate = new DateTime(year, month, day);
// build rule / rule node for "d.DayOfWeek == DayOfWeek.Monday
var dateOneMondayRule = new CustomRule<CalendarEvent, DateTime>((c, d) => d.DayOfWeek == DayOfWeek.Monday);
dateOneMondayRule.Message = "Date does not fall on a Monday.";
var dateOneMondayRuleNode = new RuleNode(dateOneMondayRule);
// build rules / rule nodes for "d < floorDate | d > ceilingDate"
var rangeRuleNode = new RuleNode(new LessThan<CalendarEvent, DateTime>(floorDate));
rangeRuleNode.OrChild(new RuleNode(new GreaterThan<CalendarEvent, DateTime>(ceilingDate)));
// put the rules / rule nodes together using a group to enforce the "or" precidence over the "and"
var groupNode = new GroupNode(rangeRuleNode);
groupNode.AndChild(dateOneMondayRuleNode);
var tree = new RuleTree<CalendarEvent, DateTime>(groupNode);
Assert.That(tree.LambdaExpression, Is.Not.Null);
var context = BuildContextForCalendarEventStartDate(testDate);
var notification = new ValidationNotification();
var isValid = tree.LambdaExpression(context, null, notification);
Assert.That(isValid, Is.EqualTo(validates));
}
private List<RuleValidator> GetAllRuleValidatorsForProperty(RuleNode node)
{
//TODO: Don't add anything with stuff we can't handle (OR,GROUP)
var rules = new List<RuleValidator>();
rules.Add(node.Rule);
var childRuleNode = node.ChildNode as RuleNode;
if (childRuleNode != null)
{
//rules.Add(childRuleNode.Rule);
rules.AddRange(GetAllRuleValidatorsForProperty(childRuleNode));
}
return rules;
}
private Expression buildRuleNodeExpression(RuleNode ruleNode, ParameterExpression contextParam, ParameterExpression specContainerParam, ParameterExpression specNotificationParam)
{
var validateMethod = ruleNode.Rule.GetType().GetMethod("Validate");
if (!ruleNode.HasChild)
{
return(Expression.Call(Expression.Constant(ruleNode.Rule), validateMethod,
contextParam, specContainerParam, specNotificationParam));
}
else
{
var leftExp = Expression.Call(Expression.Constant(ruleNode.Rule), validateMethod,
contextParam, specContainerParam, specNotificationParam);
if (ruleNode.ChildHasAndRelationship)
{
if (ruleNode.ChildRelationshipIsConditional)
{
return(Expression.AndAlso(leftExp,
BuildExpression(ruleNode.ChildNode, contextParam, specContainerParam,
specNotificationParam)));
}
else
{
return(Expression.And(leftExp,
BuildExpression(ruleNode.ChildNode, contextParam, specContainerParam,
specNotificationParam)));
}
}
else
{
if (ruleNode.ChildRelationshipIsConditional)
{
return(Expression.OrElse(leftExp,
BuildExpression(ruleNode.ChildNode, contextParam, specContainerParam,
specNotificationParam)));
}
else
{
return(Expression.Or(leftExp,
BuildExpression(ruleNode.ChildNode, contextParam, specContainerParam,
specNotificationParam)));
}
}
}
}