public void queryable_paginate_tests()
{
IQueryable <User> orderedUsers;
User[] users;
orderedUsers = Sources
.getUsers()
.AsQueryable()
.orderBy(u => u.Age, OrderDirection.Ascendant)
.thenBy(u => u.Registration, OrderDirection.Ascendant);
users = orderedUsers
.paginate(2, 0)
.ToArray();
Assert.AreEqual(2, users.Length);
Assert.AreEqual("Narciso", users[0].Name);
Assert.AreEqual("Florencio", users[1].Name);
users = orderedUsers
.paginate(2, 1)
.ToArray();
Assert.AreEqual(2, users.Length);
Assert.AreEqual("Rosa", users[0].Name);
Assert.AreEqual("Florencio", users[1].Name);
Assert.ThrowsException <ArgumentException>(() => orderedUsers.paginate(0, 2).ToArray());
}
public void forEach_tests()
{
int totalAge;
totalAge = 0;
//I know, we can achieve this by using linq Sum<T> extension method,
//but, this is for to test the forEach method.
Sources
.getUsers()
.forEach(u => totalAge += u.Age);
Assert.AreEqual(165, totalAge);
}
public void push_tests()
{
IList <User> users;
users = Sources.getUsers().ToList();
users.push(new User
{
Age = 89,
Name = "Pepe",
SurName = "Fernandez González",
Registration = new DateTime(2019, 1, 1),
});
Assert.AreEqual(5, users.Count);
Assert.ThrowsException <ArgumentException>(() => Sources.getInts().ToArray().push(4));
}
public void enumerable_whereIf_tests()
{
IEnumerable <User> users;
users = Sources.getUsers()
.whereIf(true, u => u.Age > 30)
.whereIf(false, u => u.Age < 50);
Assert.AreEqual(3, users.Count());
users = users.whereIfStringIsFilled(null, u => u.Age < 50);
Assert.AreEqual(3, users.Count());
users = users.whereIfStringIsFilled("", u => u.Age < 50);
Assert.AreEqual(3, users.Count());
users = users.whereIfStringIsFilled("pepe", u => u.Age < 50);
Assert.AreEqual(1, users.Count());
}
public void enumerable_tests()
{
User[] sortedUsers, unsortedUsers;
unsortedUsers = Sources
.getUsers()
.ToArray();
sortedUsers = Sources
.getUsers()
.orderBy(u => u.Age, OrderDirection.Descendant)
.thenBy(u => u.SurName, OrderDirection.Ascendant)
.ToArray();
Assert.ReferenceEquals(unsortedUsers[0], sortedUsers[3]);
Assert.ReferenceEquals(unsortedUsers[1], sortedUsers[1]);
Assert.ReferenceEquals(unsortedUsers[2], sortedUsers[0]);
Assert.ReferenceEquals(unsortedUsers[3], sortedUsers[2]);
}
