const { assert, skip, test, module: describe } = require('qunit');

const { GPU } = require('../../src');

describe('issue # 174');

const input = [[0, 1, 2], [3, 4, 5], [6, 7, 8]];

// recursive!

function manyKernels(mode, kernelCount, t) {

if (kernelCount < 1) return;

const done = t.async();

kernelCount--;

const gpu = new GPU({ mode });

const kernel = gpu.createKernel(function(inp) {

return inp[this.thread.y][this.thread.x];

}, {

output: [3, 3]

});

const kernel2 = gpu.createKernel(function() {

return this.thread.y * this.thread.x;

}, {

output: [1024, 1024],

pipeline: true

});

kernel(input);

kernel2();

assert.strictEqual(kernel.context, kernel2.context, "contexts should be the same object");

manyKernels(mode, kernelCount, t);

const canvas = kernel.canvas;

const eventListener = canvas.addEventListener('webglcontextlost', (e) => {

canvas.removeEventListener('webglcontextlost', eventListener);

done();

});

gpu.destroy();

}

(GPU.isWebGLSupported ? test : skip)('Issue #174 - webgl context leak webgl', t => {

manyKernels('webgl', 10, t);

});

(GPU.isWebGL2Supported ? test : skip)('Issue #174 - webgl context leak webgl2', t => {

manyKernels('webgl2', 10, t);

});