text: const { assert, test, module: describe, only, skip } = require('qunit');
  const { GPU } = require('../../src');
  
  describe('internal: constructor features');
  
  function channelCount(mode) {
    const gpu = new GPU({ mode });
    const kernel = gpu.createKernel(function() {
      return 1;
    }, { output: [1] });
    kernel();
    assert.ok(kernel.kernel.constructor.features.channelCount >= 1);
    gpu.destroy();
  }
  
  (GPU.isGPUSupported ? test : skip)('channelCount auto', () => {
    channelCount();
  });
  
  (GPU.isGPUSupported ? test : skip)('channelCount gpu', () => {
    channelCount('gpu');
  });
  
  (GPU.isWebGLSupported ? test : skip)('channelCount webgl', () => {
    channelCount('webgl');
  });
  
  (GPU.isWebGL2Supported ? test : skip)('channelCount webgl2', () => {
    channelCount('webgl2');
  });
  
  (GPU.isHeadlessGLSupported ? test : skip)('channelCount headlessgl', () => {
    channelCount('headlessgl');
  });
  