text: // Copyright (c) 2015 - 2017 Uber Technologies, Inc.
  //
  // Permission is hereby granted, free of charge, to any person obtaining a copy
  // of this software and associated documentation files (the "Software"), to deal
  // in the Software without restriction, including without limitation the rights
  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  // copies of the Software, and to permit persons to whom the Software is
  // furnished to do so, subject to the following conditions:
  //
  // The above copyright notice and this permission notice shall be included in
  // all copies or substantial portions of the Software.
  //
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  // THE SOFTWARE.
  
  import test from 'tape-promise/tape';
  
  import * as FIXTURES from 'deck.gl-test/data';
  
  import {pointToDensityGridDataCPU} from '@deck.gl/aggregation-layers/cpu-grid-layer/grid-aggregator';
  
  const getPosition = d => d.COORDINATES;
  const {points, sampleViewport} = FIXTURES;
  const iterableData = new Set(points);
  const cellSize = 500;
  function getAccessor() {
    return {size: 3};
  }
  
  test('pointToDensityGridDataCPU', t => {
    // fill with some dummy data
    const positions = new Array(iterableData.size * 3);
    const props = {
      data: iterableData,
      cellSize,
      getPosition
    };
    const aggregationParams = {
      attributes: {positions: {value: positions, getAccessor}},
      numInstances: iterableData.size,
      viewport: sampleViewport
    };
    t.ok(
      typeof pointToDensityGridDataCPU(props, aggregationParams) === 'object',
      'should work with iterables'
    );
    t.end();
  });
  