public void ShouldHandleAggregate()
{
var query = _query.Select(o => o.Id);
var sumId1 = query.Aggregate((i1, i2) => i1 + i2);
var dynSumId1 = query.Aggregate("(i1, i2) => i1 + i2");
Assert.Equal(sumId1, dynSumId1);
var sumId2 = query.Aggregate(42, (i1, i2) => i1 + i2);
var dynSumId2 = query.Aggregate(42, "(i1, i2) => i1 + i2");
Assert.Equal(sumId2, dynSumId2);
var sumId3 = query.Aggregate(42, (i1, i2) => i1 + i2, i => i.ToString());
var dynSumId3 = query.Aggregate(42, "(i1, i2) => i1 + i2", "i => i.ToString()");
Assert.Throws <ArgumentNullException>(() => Dyn.Aggregate(null, ""));
Assert.Throws <ArgumentNullException>(() => Dyn.Aggregate(_query, ""));
Assert.Throws <ArgumentNullException>(() => Dyn.Aggregate(null, (object)null, ""));
Assert.Throws <ArgumentNullException>(() => Dyn.Aggregate(_query, (object)null, ""));
Assert.Throws <ArgumentNullException>(() => Dyn.Aggregate(_query, 42, ""));
Assert.Throws <ArgumentNullException>(() => Dyn.Aggregate(null, (object)null, "", ""));
Assert.Throws <ArgumentNullException>(() => Dyn.Aggregate(_query, (object)null, "", ""));
Assert.Throws <ArgumentNullException>(() => Dyn.Aggregate(_query, 42, "", ""));
Assert.Throws <ArgumentNullException>(() => Dyn.Aggregate(_query, 42, "Id", ""));
}
