public void Bind_ReturnsCorrectStructureAndValues()
{
var filter5To10 = new NumericRangeFilter(5, 10);
var filter8To15 = new NumericRangeFilter(8, 15);
var filter5To10Or8To15 = new[] { filter5To10, filter8To15 }.Combine(CombinationOperator.Any);
var filter9To12 = new NumericRangeFilter(9, 12);
var filter = new[] { filter5To10Or8To15, filter9To12.ToLeafFilterNode() }.Combine(CombinationOperator.All);
var result = filter.Bind <NumericRangeFilter>(
f =>
{
if (ReferenceEquals(f, filter5To10))
{
return(new CombinationFilterNode <NumericRangeFilter>(new [] { filter5To10, filter8To15 }, CombinationOperator.Any));
}
if (ReferenceEquals(f, filter8To15))
{
return(FilterNode <NumericRangeFilter> .False);
}
if (ReferenceEquals(f, filter9To12))
{
return(new InvertedFilterNode <NumericRangeFilter>(f));
}
return(f.ToLeafFilterNode());
});
var expectedFilter = new CombinationFilterNode <NumericRangeFilter>(
new IFilterNode <NumericRangeFilter>[]
{
new CombinationFilterNode <NumericRangeFilter>(
new IFilterNode <NumericRangeFilter>[]
{
filter5To10Or8To15,
FilterNode <NumericRangeFilter> .False
}, CombinationOperator.Any),
new InvertedFilterNode <NumericRangeFilter>(filter9To12),
}, CombinationOperator.All);
Assert.Equal(expectedFilter, result);
}
public void Aggregate_ReturnsExpectedResult_WhenComputingLengthOfLongestInterval()
{
var filter5To10 = new NumericRangeFilter(5, 10);
var filter8To15 = new NumericRangeFilter(8, 15);
var filter5To10Or8To15 = new CombinationFilterNode <NumericRangeFilter>(new[] { filter5To10, filter8To15 }, CombinationOperator.Any);
var filter9To12 = new NumericRangeFilter(9, 12);
var filter = new CombinationFilterNode <NumericRangeFilter>(new IFilterNode <NumericRangeFilter>[] { filter5To10Or8To15, filter9To12.ToLeafFilterNode() }, CombinationOperator.All);
// Reduce the filter to get the length of the longest interval
var result = filter.Aggregate <double>(
(lengths, _) => lengths.Max(),
length => double.PositiveInfinity,
leafFilterNode => leafFilterNode.Filter.UpperBound - leafFilterNode.Filter.LowerBound);
// Max is 15 - 8
Assert.Equal(7, result);
}
public void ComplexFilter_IsMatch_FiltersToExpectedResults()
{
var filter5To10 = new NumericRangeFilter(5, 10);
var filter8To15 = new NumericRangeFilter(8, 15);
var filter5To10Or8To15 = new CombinationFilterNode <NumericRangeFilter>(new[] { filter5To10, filter8To15 }, CombinationOperator.Any);
var filter9To12 = new NumericRangeFilter(9, 12);
var filter = new CombinationFilterNode <NumericRangeFilter>(new IFilterNode <NumericRangeFilter>[] { filter5To10Or8To15, filter9To12.ToLeafFilterNode() }, CombinationOperator.All);
var values = new[] { 1, 3, 5, 9, 11 };
var expectedFilteredValues = new[] { 9, 11 };
var filteredValues = values.Where(filter.IsMatch);
Assert.Equal(expectedFilteredValues, filteredValues);
}
public void Map_ReturnsCorrectStructureAndValues()
{
var filter5To10 = new NumericRangeFilter(5, 10);
var filter8To15 = new NumericRangeFilter(8, 15);
var filter5To10Or8To15 = new CombinationFilterNode <NumericRangeFilter>(new[] { filter5To10, filter8To15 }, CombinationOperator.Any);
var filter9To12 = new NumericRangeFilter(9, 12);
var filter = new CombinationFilterNode <NumericRangeFilter>(new IFilterNode <NumericRangeFilter>[] { filter5To10Or8To15, filter9To12.ToLeafFilterNode() }, CombinationOperator.All);
var result = filter.Map(
f =>
{
var newLowerBound = f.LowerBound + 1;
var newUpperBound = f.UpperBound - 1;
return(new NumericRangeFilter(newLowerBound, newUpperBound));
});
var filter6To9 = new NumericRangeFilter(6, 9);
var filter9To14 = new NumericRangeFilter(9, 14);
var filter6To9Or9To14 = new CombinationFilterNode <NumericRangeFilter>(new[] { filter6To9, filter9To14 }, CombinationOperator.Any);
var filter10To11 = new NumericRangeFilter(10, 11);
var expectedFilter = new CombinationFilterNode <NumericRangeFilter>(new IFilterNode <NumericRangeFilter>[] { filter6To9Or9To14, filter10To11.ToLeafFilterNode() }, CombinationOperator.All);
Assert.Equal(expectedFilter, result);
}