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

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

describe('features: to-string as file');

function toStringAsFileTest(mode) {

const path = __dirname + `/to-string-as-file-${mode}.js`;

const fs = require('fs');

if (fs.existsSync(path)) {

fs.unlinkSync(path);

}

const gpu = new GPU({ mode });

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

return v[this.thread.y][this.thread.x] + 1;

}, { output: [1, 1] });

const a = [[1]];

const expected = kernel(a);

assert.deepEqual(expected, [new Float32Array([2])]);

const kernelAsString = kernel.toString(a);

fs.writeFileSync(path, `module.exports = ${kernelAsString};`);

const toStringAsFile = require(path);

const restoredKernel = toStringAsFile({ context: kernel.context });

const result = restoredKernel(a);

assert.deepEqual(result, expected);

fs.unlinkSync(path);

gpu.destroy();

}

(GPU.isHeadlessGLSupported ? test : skip)('can save and restore function headlessgl', () => {

toStringAsFileTest('headlessgl');

});

(GPU.isHeadlessGLSupported ? test : skip)('can save and restore function cpu', () => {

toStringAsFileTest('cpu');

});