public void AnonymousTypeKeyInfoIsEmptyThatCannot()
{
var keyInfo = AnonymousTypeKeyInfo.Create((Member m) => new { m.GroupId2 });
Assert.IsFalse(
keyInfo.IsEmptyKey(
new
{
GroupId2 = 1
}));
}
public void AnonymousTypeKeyInfoIsEmpty()
{
var keyInfo = AnonymousTypeKeyInfo.Create((Member m) => new { m.GroupId, m.GroupId2 });
Assert.IsTrue(
keyInfo.IsEmptyKey(
new
{
GroupId = (int?)null,
GroupId2 = 1
}));
Assert.IsFalse(
keyInfo.IsEmptyKey(
new
{
GroupId = (int?)1,
GroupId2 = 2
}));
}
public bool TryCreateKeyInfo <TEntity, TKey>(
Expression <Func <TEntity, TKey> > keySelector,
out IKeyInfo <TEntity, TKey> result) where TEntity : class
{
if (!ReflectionHelper.IsAnonymousType(typeof(TKey)))
{
result = null;
return(false);
}
IKeyInfoHelper helper = AnonymousTypeKeyInfo <TEntity, TKey> .KeyInfoHelper;
MemberInfo[] members;
if (!helper.TryParseKeySelectorExpression(keySelector.Body, true, out members))
{
result = null;
return(false);
}
result = new AnonymousTypeKeyInfo <TEntity, TKey>(members);
return(true);
}
public void AnonymousTypeKeyInfoInvalidCreation()
{
// Casting must not be used in the selector expression
AnonymousTypeKeyInfo.Create((Member m) => new { Id1 = m.GroupId, Id2 = (long)m.GroupId2 });
}
public void AnonymousTypeKeyInfoCreation()
{
var keyInfo = AnonymousTypeKeyInfo.Create((Member m) => new { m.GroupId, m.GroupId2 });
Assert.AreEqual(2, keyInfo.EntityKeyMembers.Length);
}