node/test/simple/test-tls-client-default-ciphers.js

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var assert = require('assert');
var tls = require('tls');

function test1() {
  var ciphers = '';
  tls.createSecureContext = function(options) {
    ciphers = options.ciphers
  }
  tls.connect(443);
  assert.equal(ciphers, tls.DEFAULT_CIPHERS);
}
test1();