public void GetIndexRange_EmptyCollection_Expected()
{
// Arrange
var collection = GetEmptyIndexed <string>();
var expected = new ExpectedDirectedCollectionValue <string>(
NoStrings,
ReferenceEqualityComparer,
collection.AllowsNull
);
// Act
var getIndexRange = collection.GetIndexRange(0, 0);
// Assert
Assert.That(getIndexRange, Is.EqualTo(expected));
}
public void Backwards_BackwardsRandomCollection_Expected()
{
// Arrange
var collection = GetStringSequence(Random);
var expected = new ExpectedDirectedCollectionValue <string>(
collection.ToArray(),
ReferenceEqualityComparer,
collection.AllowsNull
);
// Act
var backwardsBackwards = collection.Backwards().Backwards();
// Assert
Assert.That(backwardsBackwards, Is.EqualTo(expected));
}
public void GetIndexRange_EmptyRange_Expected()
{
// Arrange
var collection = GetStringIndexed(Random);
var startIndex = Random.Next(0, collection.Count);
var expected = new ExpectedDirectedCollectionValue <string>(
NoStrings,
ReferenceEqualityComparer,
collection.AllowsNull
);
// Act
var getIndexRange = collection.GetIndexRange(startIndex, 0);
// Assert
Assert.That(getIndexRange, Is.EqualTo(expected));
}
public void GetIndexRange_GetFullRange_Expected()
{
// Arrange
var collection = GetStringIndexed(Random);
var count = collection.Count;
var expected = new ExpectedDirectedCollectionValue <string>(
collection.ToArray(),
ReferenceEqualityComparer,
collection.AllowsNull
);
// Act
var getIndexRange = collection.GetIndexRange(0, count);
// Assert
Assert.That(getIndexRange, Is.EqualTo(expected));
}
public void Backwards_EmptyCollection_Expected()
{
// Arrange
var collection = GetEmptySequence <string>();
var expected = new ExpectedDirectedCollectionValue <string>(
NoStrings,
ReferenceEqualityComparer,
collection.AllowsNull,
direction: Backwards
);
// Act
var backwards = collection.Backwards();
// Assert
Assert.That(backwards, Is.EqualTo(expected));
}
public void Backwards_AllowsNull_Expected()
{
Run.If(AllowsNull);
// Arrange
var items = GetStrings(Random).WithNull(Random);
var collection = GetSequence(items, allowsNull: true);
var expected = new ExpectedDirectedCollectionValue <string>(
collection.Reverse(),
ReferenceEqualityComparer,
collection.AllowsNull,
direction: Backwards
);
// Act
var backwards = collection.Backwards();
// Assert
Assert.That(backwards, Is.EqualTo(expected));
}
public void GetIndexRange_ForwardsRange_ChooseReturnsLastItem()
{
// Arrange
var items = GetStrings(Random);
var collection = new ArrayList <string>(items);
var count = Random.Next(1, collection.Count);
var startIndex = Random.Next(0, collection.Count - count);
var expected = new ExpectedDirectedCollectionValue <string>(
collection.Skip(startIndex).Take(count),
collection.EqualityComparer,
collection.AllowsNull,
() => collection[startIndex + count - 1]
);
// Act
var getIndexRange = collection.GetIndexRange(startIndex, count);
// Assert
Assert.That(getIndexRange, Is.EqualTo(expected));
}
