text: // Copyright 2018 The Rust Project Developers. See the COPYRIGHT
  // file at the top-level directory of this distribution and at
  // http://rust-lang.org/COPYRIGHT.
  //
  // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
  // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
  // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
  // option. This file may not be copied, modified, or distributed
  // except according to those terms.
  
  const fs = require('fs');
  const process = require('process');
  const assert = require('assert');
  const buffer = fs.readFileSync(process.argv[2]);
  
  let m = new WebAssembly.Module(buffer);
  let sections = WebAssembly.Module.customSections(m, "baz");
  console.log('section baz', sections);
  assert.strictEqual(sections.length, 1);
  let section = new Uint8Array(sections[0]);
  console.log('contents', section);
  assert.strictEqual(section.length, 2);
  assert.strictEqual(section[0], 7);
  assert.strictEqual(section[1], 8);
  
  sections = WebAssembly.Module.customSections(m, "bar");
  console.log('section bar', sections);
  assert.strictEqual(sections.length, 1, "didn't pick up `bar` section from dependency");
  section = new Uint8Array(sections[0]);
  console.log('contents', section);
  assert.strictEqual(section.length, 2);
  assert.strictEqual(section[0], 3);
  assert.strictEqual(section[1], 4);
  
  sections = WebAssembly.Module.customSections(m, "foo");
  console.log('section foo', sections);
  assert.strictEqual(sections.length, 1, "didn't create `foo` section");
  section = new Uint8Array(sections[0]);
  console.log('contents', section);
  assert.strictEqual(section.length, 4, "didn't concatenate `foo` sections");
  assert.strictEqual(section[0], 5);
  assert.strictEqual(section[1], 6);
  assert.strictEqual(section[2], 1);
  assert.strictEqual(section[3], 2);
  
  process.exit(0);
  