Function TestReadDataset

catboost/libs/data/ut/lib/for_loader.cpp:64–103

    }

    void TestReadDataset(const TReadDatasetTestCase& testCase) {
        TReadDatasetMainParams readDatasetMainParams;

        // TODO(akhropov): temporarily use THolder until TTempFile move semantic are fixed
        TVector<THolder<TTempFile>> srcDataFiles;

        SaveSrcData(testCase.SrcData, &readDatasetMainParams, &srcDataFiles);

        NPar::TLocalExecutor localExecutor;
        localExecutor.RunAdditionalThreads(3);

        auto readDataset = [&] () {
            return ReadDataset(
                /*taskType*/Nothing(),
                readDatasetMainParams.PoolPath,
                readDatasetMainParams.PairsFilePath, // can be uninited
                readDatasetMainParams.GraphFilePath, // can be uninited
                readDatasetMainParams.GroupWeightsFilePath, // can be uninited
                /*timestampsFilePath*/TPathWithScheme(),
                readDatasetMainParams.BaselineFilePath, // can be uninited
                readDatasetMainParams.FeatureNamesFilePath, // can be uninited
                /*poolMetaInfoFilePath*/TPathWithScheme(),
                readDatasetMainParams.ColumnarPoolFormatParams,
                testCase.SrcData.IgnoredFeatures,
                testCase.SrcData.ObjectsOrder,
                TDatasetSubset::MakeColumns(),
                /*loadSampleIds*/ false,
                /*forceUnitAutoPairWeights*/ true,
                /*classLabels*/Nothing(),
                &localExecutor
            );
        };

        if (testCase.ExpectedReadError) {
            UNIT_ASSERT_EXCEPTION(readDataset(), TCatBoostException);
        } else {
            TDataProviderPtr dataProvider = readDataset();
            Compare<TRawObjectsDataProvider>(std::move(dataProvider), testCase.ExpectedData);
        }
    }


    void TestSampleDataset(const TSampleDatasetTestCase& testCase) {