public void WhenNoItemsAndNoDate_ReturnsNull()
{
var items = ImmutableArray <TestSummaryItem> .Empty;
var actual = SummaryMapper.GetLastAndPreviousItem(null, items, i => true);
Assert.That(actual, Is.Null);
}
public void WhenNoItems_ReturnsNull()
{
var items = ImmutableArray <TestSummaryItem> .Empty;
var actual = SummaryMapper.GetLastItemOnDate(new DateTime(2020, 12, 18), items, i => true);
Assert.That(actual, Is.Null);
}
public void WhenItemWithMatchingDateExistsAndNoPrevious_ReturnsPreviousAsNull()
{
var items = ImmutableArray <TestSummaryItem> .Empty
.Add(new TestSummaryItem(2020, 12, 18));
var actual = SummaryMapper.GetLastAndPreviousItem(new DateTime(2020, 12, 18), items, i => true);
Assert.That(actual.Value.Previous, Is.Null);
}
public void WhenOnlySingleItemExistsAndNoDate_ReturnsLastAsLastItem()
{
var items = ImmutableArray <TestSummaryItem> .Empty
.Add(new TestSummaryItem(2020, 12, 18));
var actual = SummaryMapper.GetLastAndPreviousItem(null, items, i => true);
Assert.That(actual.Value.Last, Is.SameAs(items[0]));
}
public void WhenOnlyMoreRecentDates_ReturnsNull()
{
var items = ImmutableArray <TestSummaryItem> .Empty
.Add(new TestSummaryItem(2020, 12, 30))
.Add(new TestSummaryItem(2020, 12, 31));
var actual = SummaryMapper.GetLastItemOnDate(new DateTime(2020, 12, 18), items, i => true);
Assert.That(actual, Is.Null);
}
public void WhenAtLeastTwoItemsExistAndNoDate_ReturnsPreviousCorrectly()
{
var items = ImmutableArray <TestSummaryItem> .Empty
.Add(new TestSummaryItem(2020, 12, 17))
.Add(new TestSummaryItem(2020, 12, 18));
var actual = SummaryMapper.GetLastAndPreviousItem(null, items, i => true);
Assert.That(actual.Value.Previous, Is.SameAs(items[0]));
}
public void WhenItemWithMatchingDateExistsAndIsLast_ReturnsItemWithSameDateAndIndexOne()
{
var items = ImmutableArray <TestSummaryItem> .Empty
.Add(new TestSummaryItem(2020, 12, 17))
.Add(new TestSummaryItem(2020, 12, 18));
var actual = SummaryMapper.GetLastItemOnDate(new DateTime(2020, 12, 18), items, i => true);
Assert.That(actual.Value.Item, Is.SameAs(items[1]));
Assert.That(actual.Value.Index, Is.EqualTo(1));
}
public float?GiveValus_ReturnsExpectedResult(int?last, int?previous)
{
return(SummaryMapper.CalculateDifference(last, previous));
}
