public void TupleKeyInfoHelper_ParseLarge()
{
TupleKeyInfoHelper builder = new TupleKeyInfoHelper(typeof(Tuple<int, string, int, string, int, string, int, Tuple<string, int>>));
Expression<Func<Group, Tuple<int, string, int, string, int, string, int, Tuple<string, int>>>>
selector = (Group m) =>
new Tuple<int, string, int, string, int, string, int, Tuple<string, int>>(
m.Id,
m.Name,
m.Id,
m.Name,
m.Id,
m.Name,
m.Id,
new Tuple<string, int>(
m.Name,
m.Id));
MemberInfo[] members = null;
bool res = builder.TryParseKeySelectorExpression(selector.Body, true, out members);
Assert.AreEqual(true, res);
Assert.IsNotNull(members);
Assert.AreEqual(9, members.Length);
for (int i = 0; i < 9; i++)
{
string expect = i % 2 == 0 ? "Id" : "Name";
Assert.AreEqual(expect, members[i].Name);
}
}
public void TupleKeyInfoHelper_ParseCreate()
{
TupleKeyInfoHelper builder = new TupleKeyInfoHelper(typeof(Tuple<int, string>));
Expression<Func<Group, Tuple<int, string>>> selector =
(Group m) => Tuple.Create(m.Id, m.Name);
MemberInfo[] members = null;
bool res = builder.TryParseKeySelectorExpression(selector.Body, true, out members);
Assert.AreEqual(true, res);
Assert.IsNotNull(members);
Assert.AreEqual(2, members.Length);
Assert.AreEqual("Id", members[0].Name);
Assert.AreEqual("Name", members[1].Name);
}
private static Expression CreateTupleSelector(
Expression body,
Expression[] memberSelectors)
{
Type[] memberTypes = memberSelectors.Select(e => e.Type).ToArray();
Type tupleType = TupleTypeHelper.CreateTupleType(memberTypes);
var helper = new TupleKeyInfoHelper(tupleType);
body = helper.CreateKeyFactoryExpression(memberSelectors);
return body;
}
public void TupleKeyInfoHelper_KeyMemberSelectorLarge2()
{
var tuple =
new Tuple<int, int, int, int, int, int, int,
Tuple<int, int, int, int, int, int, int,
Tuple<int, int>>>(
1, 2, 3, 4, 5, 6, 7,
new Tuple<int, int, int, int, int, int, int, Tuple<int, int>>(
8, 9, 10, 11, 12, 13, 14, Tuple.Create(15, 16)));
TupleKeyInfoHelper builder = new TupleKeyInfoHelper(tuple.GetType());
Expression source = Expression.Constant(tuple);
Expression selector = builder.CreateKeyMemberSelectorExpression(source, 15);
int result = (int)Expression.Lambda(selector).Compile().DynamicInvoke();
Assert.AreEqual(16, result);
}
public void TupleKeyInfoHelper_KeyMemberSelector()
{
TupleKeyInfoHelper builder = new TupleKeyInfoHelper(typeof(Tuple<int, string>));
Expression source = Expression.Constant(Tuple.Create(1, "2"));
Expression selector1 = builder.CreateKeyMemberSelectorExpression(source, 0);
Expression selector2 = builder.CreateKeyMemberSelectorExpression(source, 1);
int result1 = (int)Expression.Lambda(selector1).Compile().DynamicInvoke();
string result2 = (string)Expression.Lambda(selector2).Compile().DynamicInvoke();
Assert.AreEqual(1, result1);
Assert.AreEqual("2", result2);
}
public void TupleKeyInfoHelper_KeyFactoryLarge()
{
TupleKeyInfoHelper builder =
new TupleKeyInfoHelper(typeof(Tuple<int, int, int, int, int, int, int, Tuple<int, int>>));
Expression factory = builder.CreateKeyFactoryExpression(
Enumerable
.Range(1, 9)
.Select(x => Expression.Constant(x, typeof(int)))
.ToArray());
var result = Expression.Lambda(factory).Compile().DynamicInvoke()
as Tuple<int, int, int, int, int, int, int, Tuple<int, int>>;
Assert.IsNotNull(result);
Assert.AreEqual(1, result.Item1);
Assert.AreEqual(2, result.Item2);
Assert.AreEqual(8, result.Rest.Item1);
Assert.AreEqual(9, result.Rest.Item2);
}
public void TupleKeyInfoHelper_KeyFactory()
{
TupleKeyInfoHelper builder = new TupleKeyInfoHelper(typeof(Tuple<int, string>));
Expression factory = builder.CreateKeyFactoryExpression(
Expression.Constant(1, typeof(int)),
Expression.Constant("2", typeof(string)));
var result = Expression.Lambda(factory).Compile().DynamicInvoke() as Tuple<int, string>;
Assert.IsNotNull(result);
Assert.AreEqual(1, result.Item1);
Assert.AreEqual("2", result.Item2);
}
public void TupleKeyInfoHelper_MemberCountLarge()
{
TupleKeyInfoHelper builder =
new TupleKeyInfoHelper(typeof(Tuple<int, int, int, int, int, int, int, Tuple<int, int>>));
int memberCount = builder.GetMemberCount();
Assert.AreEqual(9, memberCount);
}
public void TupleKeyInfoHelper_MemberCount()
{
TupleKeyInfoHelper builder = new TupleKeyInfoHelper(typeof(Tuple<int, string>));
int memberCount = builder.GetMemberCount();
Assert.AreEqual(2, memberCount);
}