public void CreateCompositeStrategyWeightedAverage_whenAllWeightsArePositive__shouldNotThrowException()
        {
            List <CrsTransformationAdapterWeight> weightedCrsTransformationAdapters =
                new List <CrsTransformationAdapterWeight> {
                weightFactory.CreateFromInstance(
                    new CrsTransformationAdapterMightyLittleGeodesy(),
                    1 // null is not possible (compiling error) which is good !
                    )
            };
            CompositeStrategyWeightedAverage compositeStrategyWeightedAverage =
                CompositeStrategyWeightedAverage._CreateCompositeStrategyWeightedAverage(weightedCrsTransformationAdapters);

            // (the above method is "internal" in the F# project but still available from here
            //  because of "InternalsVisibleTo" configuration in the .fsproj file)
            // The main test of this test method is that the above create method does not throw an exception
            Assert.IsNotNull(compositeStrategyWeightedAverage);
        }
        public void CalculateAggregatedResult_ShouldThrowException_WhenResultIsBasedOnLeafsNotBeingPartOfTheWeightedAverageAdapter()
        {
            CrsCoordinate coordinate = CrsCoordinateFactory.LatLon(59, 18);
            List <CrsTransformationResult> emptyListOfTransformationResults = new List <CrsTransformationResult>();

            ICrsTransformationAdapter             leafMightyLittleGeodesy = new CrsTransformationAdapterMightyLittleGeodesy();
            List <CrsTransformationAdapterWeight> leafWeightsForOnlyMightyLittleGeodesy = new List <CrsTransformationAdapterWeight> {
                weightFactory.CreateFromInstance(
                    leafMightyLittleGeodesy,
                    1
                    )
            };
            // The below type ICompositeStrategy is "internal" in the F# project but still available from here
            //  because of "InternalsVisibleTo" configuration in the .fsproj file.
            ICompositeStrategy compositeStrategyWeightedAverageForOnlyMightyLittleGeodesy = CompositeStrategyWeightedAverage._CreateCompositeStrategyWeightedAverage(leafWeightsForOnlyMightyLittleGeodesy);
            // The above composite was created with only one leaf in the list

            ICrsTransformationAdapter leafDotSpatial = new CrsTransformationAdapterDotSpatial();
            CrsTransformationResult   crsTransformationResultProblem = new CrsTransformationResult(
                coordinate,     // inputCoordinate irrelevant in this test so okay to use the same as the output
                coordinate,     // outputCoordinate
                null,           // exception
                true,           // isSuccess
                leafDotSpatial, // crsTransformationAdapterResultSource,
                CrsTransformationResultStatistic._CreateCrsTransformationResultStatistic(emptyListOfTransformationResults)
                );

            // The composite strategy used below was created with only MightyLittleGeodesy,
            // and therefore if the result (as below) would be based on "DotSpatial"
            // then there is a bug somewhere i.e. an exception is thrown
            // which is tested below
            InvalidOperationException exception = Assert.Throws <InvalidOperationException>(() => {
                compositeStrategyWeightedAverageForOnlyMightyLittleGeodesy._CalculateAggregatedResult(
                    new List <CrsTransformationResult> {
                    crsTransformationResultProblem
                },                            // allResults
                    coordinate,
                    coordinate.CrsIdentifier, //  crsIdentifier for OutputCoordinateSystem
                    leafDotSpatial            // SHOULD CAUSE EXCEPTION !
                    );
            },
                                                                                            "The result adapter was not part of the weighted average composite adapter"
                                                                                            );
        }