text: #!/usr/bin/env python
  #
  # Copyright 2016 WebAssembly Community Group participants
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  import os
  import subprocess
  
  from support import run_command, node_has_webassembly, node_test_glue
  from shared import BINARYEN_JS, MOZJS, NODEJS, options, fail
  
  
  def test_binaryen_js():
    if not (MOZJS or NODEJS):
      print 'no vm to run binaryen.js tests'
      return
  
    node_has_wasm = NODEJS and node_has_webassembly(NODEJS)
  
    if not os.path.exists(BINARYEN_JS):
      print 'no binaryen.js build to test'
      return
  
    print '\n[ checking binaryen.js testcases... ]\n'
  
    for s in sorted(os.listdir(os.path.join(options.binaryen_test, 'binaryen.js'))):
      if not s.endswith('.js'):
        continue
      print s
      f = open('a.js', 'w')
      # avoid stdout/stderr ordering issues in some js shells - use just stdout
      f.write('''
        console.warn = function(x) { console.log(x) };
      ''')
      binaryen_js = open(BINARYEN_JS).read()
      f.write(binaryen_js)
      if NODEJS:
        f.write(node_test_glue())
      test_path = os.path.join(options.binaryen_test, 'binaryen.js', s)
      test_src = open(test_path).read()
      f.write(test_src)
      f.close()
  
      def test(engine):
        cmd = [engine, 'a.js']
        if 'fatal' not in s:
          out = run_command(cmd, stderr=subprocess.STDOUT)
        else:
          # expect an error - the specific error code will depend on the vm
          out = run_command(cmd, stderr=subprocess.STDOUT, expected_status=None)
        expected = open(os.path.join(options.binaryen_test, 'binaryen.js', s + '.txt')).read()
        if expected not in out:
          fail(out, expected)
  
      # run in all possible shells
      if MOZJS:
        test(MOZJS)
      if NODEJS:
        if node_has_wasm or 'WebAssembly.' not in test_src:
          test(NODEJS)
        else:
          print 'Skipping ' + test_path + ' because WebAssembly might not be supported'
  
  
  if __name__ == "__main__":
    test_binaryen_js()
  