public void TakeLastElementSuccessfully()
{
// Arrange
const string expectedName = "Expected";
var filterRules = new OrderByFilterRules()
{
Skip = 2,
Take = 1
};
var entities = new List<UserProfileEntity>
{
new UserProfileEntity(),
new UserProfileEntity(),
new UserProfileEntity{UserName = expectedName}
};
IFilter filter = new EntityFilter(_lambdaCreator);
// Act
var result = filter.FilterWithOrder(entities, filterRules);
// Assert
Assert.AreEqual(1, result.Count);
Assert.AreEqual(expectedName, result[0].UserName);
}
public void Return0ElementsIfTakeIsLesserThan1()
{
// Arrange
var invalidFilter = new OrderByFilterRules() {Take = -1};
var entities = Enumerable.Range(1, 30)
.Select(_ => new UserProjectEntity())
.ToList();
IFilter entityFilter = new EntityFilter(_lambdaCreator);
// Act
var res = entityFilter.FilterWithOrder(entities, invalidFilter);
Assert.AreEqual(0, res.Count);
}
public void OrderByDescendingSuccessfully()
{
// Arrange
const int max = 30;
var filterRules = new OrderByFilterRules() {Take = 5, Orderby = "Created"};
var entities = Enumerable.Range(1, max)
.Select(value => new UserProjectEntity
{
Created = DateTime.MinValue + TimeSpan.FromDays(value),
Name = value.ToString(CultureInfo.InvariantCulture)
})
.ToList();
IFilter filter = new EntityFilter(_lambdaCreator);
// Act
var result = filter.FilterWithOrder(entities, filterRules);
string firstElementName = result.First().Name;
// Assert
Assert.AreEqual(max.ToString(), firstElementName);
}
public void ReturnResultEvenIfRangeIsBiggerThanLength()
{
// Arrange
const int max = 15;
const int skip = 10;
var filterRules = new OrderByFilterRules() { Take = 10, Orderby = "Created", Skip = skip};
var entities = Enumerable.Range(1, max)
.Select(value => new UserProjectEntity
{
Created = DateTime.MinValue + TimeSpan.FromDays(value),
Name = value.ToString(CultureInfo.InvariantCulture)
})
.ToList();
IFilter filter = new EntityFilter(_lambdaCreator);
// Act
var result = filter.FilterWithOrder(entities, filterRules);
// Assert
Assert.AreEqual(5, result.Count);
}