src/apps/testapps/testPolygonToCells.c [105:145]:
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        int64_t polygonToCellsCount =
            countNonNullIndexes(polygonToCellsOut, polygonToCellsSize);

        int64_t childrenSize;
        t_assertSuccess(
            H3_EXPORT(cellToChildrenSize)(h, nextRes, &childrenSize));
        H3Index *children = calloc(childrenSize, sizeof(H3Index));
        t_assertSuccess(H3_EXPORT(cellToChildren)(h, nextRes, children));

        int64_t cellToChildrenCount =
            countNonNullIndexes(children, childrenSize);

        t_assert(polygonToCellsCount == cellToChildrenCount,
                 "PolygonToCells count matches cellToChildren count");

        for (int i = 0; i < childrenSize; i++) {
            bool found = false;
            if (children[i] == H3_NULL) continue;
            for (int j = 0; j < polygonToCellsSize; j++) {
                if (polygonToCellsOut[j] == children[i]) {
                    found = true;
                    break;
                }
            }
            t_assert(
                found,
                "All indexes match between polygonToCells and cellToChildren");
        }

        free(polygonToCellsOut);
        free(children);
    }
}

SUITE(polygonToCells) {
    sfGeoPolygon.geoloop = sfGeoLoop;
    sfGeoPolygon.numHoles = 0;

    holeGeoPolygon.geoloop = sfGeoLoop;
    holeGeoPolygon.numHoles = 1;
    holeGeoPolygon.holes = &holeGeoLoop;
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src/apps/testapps/testPolygonToCellsExperimental.c [118:158]:
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        int64_t polygonToCellsCount =
            countNonNullIndexes(polygonToCellsOut, polygonToCellsSize);

        int64_t childrenSize;
        t_assertSuccess(
            H3_EXPORT(cellToChildrenSize)(h, nextRes, &childrenSize));
        H3Index *children = calloc(childrenSize, sizeof(H3Index));
        t_assertSuccess(H3_EXPORT(cellToChildren)(h, nextRes, children));

        int64_t cellToChildrenCount =
            countNonNullIndexes(children, childrenSize);

        t_assert(polygonToCellsCount == cellToChildrenCount,
                 "PolygonToCells count matches cellToChildren count");

        for (int i = 0; i < childrenSize; i++) {
            bool found = false;
            if (children[i] == H3_NULL) continue;
            for (int j = 0; j < polygonToCellsSize; j++) {
                if (polygonToCellsOut[j] == children[i]) {
                    found = true;
                    break;
                }
            }
            t_assert(
                found,
                "All indexes match between polygonToCells and cellToChildren");
        }

        free(polygonToCellsOut);
        free(children);
    }
}

SUITE(polygonToCells) {
    sfGeoPolygon.geoloop = sfGeoLoop;
    sfGeoPolygon.numHoles = 0;

    holeGeoPolygon.geoloop = sfGeoLoop;
    holeGeoPolygon.numHoles = 1;
    holeGeoPolygon.holes = &holeGeoLoop;
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