node/test/simple/test-tls-cipher-list.js

// Copyright Joyent, Inc. and other Node contributors.
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var spawn = require('child_process').spawn;
var assert = require('assert');
var tls = require('tls');

function doTest(checklist, env, useswitch) {
  var options;
  if (env && useswitch === 1) {
    options = {env:env};
  }
  var args = ['-e', 'console.log(require(\'tls\').DEFAULT_CIPHERS)'];

  switch(useswitch) {
    case 1:
      // Test --cipher-test
      args.unshift('--cipher-list=' + env);
      break;
    case 2:
      // Test --enable-legacy-cipher-list
      args.unshift('--enable-legacy-cipher-list=' + env);
      break;
    case 3:
      // Test NODE_LEGACY_CIPHER_LIST
      if (env) options = {env:{"NODE_LEGACY_CIPHER_LIST": env}};
      break;
    default:
      // Test NODE_CIPHER_LIST
      if (env) options = {env:env};
  }

  var out = '';
  spawn(process.execPath, args, options).
    stdout.
      on('data', function(data) {
        out += data;
      }).
      on('end', function() {
        assert.equal(out.trim(), checklist);
      });
}

doTest(tls.DEFAULT_CIPHERS); // test the default
doTest('ABC', {'NODE_CIPHER_LIST':'ABC'}); // test the envar
doTest('ABC', 'ABC', 1); // test the --cipher-list switch

['v0.10.38', 'v0.10.39', 'v0.12.2'].forEach(function(ver) {
  doTest(tls.getLegacyCiphers(ver), ver, 2);
  doTest(tls.getLegacyCiphers(ver), ver, 3);
});