public void CombinationFilter_OrOperator_GetPredicate_FiltersToExpectedResults()
{
var filter1 = new NumericRangeFilter(5, 10);
var filter2 = new NumericRangeFilter(8, 15);
var filter = new CombinationFilterNode <NumericRangeFilter>(new[] { filter1, filter2 }, CombinationOperator.Any);
var values = new[] { 1, 3, 5, 9, 11 };
var expectedFilteredValues = new[] { 5, 9, 11 };
var filterPredicate = filter.GetPredicate <NumericRangeFilter, int>();
var filteredValues = values.Where(filterPredicate);
Assert.Equal(expectedFilteredValues, filteredValues);
}
public void ComplexFilter_GetPredicate_FiltersToExpectedResults()
{
var filter5To10 = new NumericRangeFilter(5, 10);
var filter8To15 = new NumericRangeFilter(8, 15);
var filter5To10And8To15 = new CombinationFilterNode <NumericRangeFilter>(new[] { filter5To10, filter8To15 }, CombinationOperator.Any);
var filter9To12 = new NumericRangeFilter(9, 12);
var filter = new CombinationFilterNode <NumericRangeFilter>(new IFilterNode <NumericRangeFilter>[] { filter5To10And8To15, filter9To12.ToLeafFilterNode() }, CombinationOperator.All);
var values = new[] { 1, 3, 5, 9, 11 };
var expectedFilteredValues = new[] { 9, 11 };
var filterPredicate = filter.GetPredicate <NumericRangeFilter, int>();
var filteredValues = values.Where(filterPredicate);
Assert.Equal(expectedFilteredValues, filteredValues);
}
public void GetPartial_Example()
{
// All the numbers from -5 to 10, EXCEPT numbers from 2 to 6
var filter = new CombinationFilterNode <NumericRangeFilter>(new IFilterNode <NumericRangeFilter>[]
{
new LeafFilterNode <NumericRangeFilter>(new NumericRangeFilter(-5, 10)),
new InvertedFilterNode <NumericRangeFilter>(new NumericRangeFilter(2, 6)),
}, CombinationOperator.All);
// Exclude filters with negative values
var partialFilter = filter.GetPartial(f => f.LowerBound >= 0);
var positiveValues = new[] { 1, 3, 5, 7, 12 };
var prefilteredValues = positiveValues.Where(partialFilter.GetPredicate <NumericRangeFilter, int>()).ToList();
Assert.Equal(new[] { 1, 7, 12 }, prefilteredValues);
var additionalValues = new[] { -7, -4, 11 };
var combinedValues = prefilteredValues.Concat(additionalValues);
var finalValues = combinedValues.Where(filter.GetPredicate <NumericRangeFilter, int>());
Assert.Equal(new[] { 1, 7, -4 }, finalValues);
}
