public void Reverse()
{
var actual = MyEnumerable
.Range(0, 5)
.Reverse();
Assert.Equal(new[] { 4, 3, 2, 1, 0 }, actual);
}
public void Select()
{
var actual = MyEnumerable
.Range(0, 3)
.Select(i => i * 2);
Assert.Equal(new[] { 0, 2, 4 }, actual);
}
public void Where()
{
var actual = MyEnumerable
.Range(0, 5)
.Where(i => i % 2 == 0);
Assert.Equal(new[] { 0, 2, 4 }, actual);
}
public void Take()
{
var actual = MyEnumerable
.Range(0, 5)
.Take(3);
Assert.Equal(new[] { 0, 1, 2 }, actual);
}
public void SelectMany()
{
var numbers = MyEnumerable.Range(1, 2);
var letters = new[] { 'A', 'B' };
var actual = numbers.SelectMany(num => letters, Tuple.Create);
Assert.Equal(new[] {
Tuple.Create(1, 'A'),
Tuple.Create(1, 'B'),
Tuple.Create(2, 'A'),
Tuple.Create(2, 'B')
}, actual);
}
public void SelectManyCartesianProduct()
{
var numbers = MyEnumerable.Range(1, 3);
var letters = new[] { 'x', 'y', 'z' };
var actual = numbers.SelectMany(
number => letters,
Tuple.Create
);
CollectionAssert.AreEqual(
new[] {
Tuple.Create(1, 'x'),
Tuple.Create(1, 'y'),
Tuple.Create(1, 'z'),
Tuple.Create(2, 'x'),
Tuple.Create(2, 'y'),
Tuple.Create(2, 'z'),
Tuple.Create(3, 'x'),
Tuple.Create(3, 'y'),
Tuple.Create(3, 'z')
}, actual);
}
public void ReverseTest()
{
var actual = MyEnumerable.Range(1, 5).Reverse();
CollectionAssert.AreEqual(new[] { 5, 4, 3, 2, 1 }, actual);
}
public void RangeTest()
{
var actual = MyEnumerable.Range(1, 10);
CollectionAssert.AreEqual(new[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 }, actual);
}
public void Range()
{
var actual = MyEnumerable.Range(0, 5);
Assert.Equal(new[] { 0, 1, 2, 3, 4 }, actual);
}