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

exports.testDir = path.dirname(__filename);
exports.fixturesDir = path.join(exports.testDir, 'fixtures');
exports.libDir = path.join(exports.testDir, '../lib');
exports.tmpDir = path.join(exports.testDir, 'tmp');
exports.PORT = 12346;

var util = require('util');
for (var i in util) exports[i] = util[i];
//for (var i in exports) global[i] = exports[i];

function protoCtrChain(o) {
  var result = [];
  for (; o; o = o.__proto__) { result.push(o.constructor); }
  return result.join();
}

exports.indirectInstanceOf = function(obj, cls) {
  if (obj instanceof cls) { return true; }
  var clsChain = protoCtrChain(cls.prototype);
  var objChain = protoCtrChain(obj);
  return objChain.slice(-clsChain.length) === clsChain;
};


// Turn this off if the test should not check for global leaks.
exports.globalCheck = true;

process.on('exit', function() {
  if (!exports.globalCheck) return;
  var knownGlobals = [setTimeout,
                      setInterval,
                      clearTimeout,
                      clearInterval,
                      console,
                      Buffer,
                      process,
                      global];

  if (global.DTRACE_HTTP_SERVER_RESPONSE) {
    knownGlobals.push(DTRACE_HTTP_SERVER_RESPONSE);
    knownGlobals.push(DTRACE_HTTP_SERVER_REQUEST);
    knownGlobals.push(DTRACE_HTTP_CLIENT_RESPONSE);
    knownGlobals.push(DTRACE_HTTP_CLIENT_REQUEST);
    knownGlobals.push(DTRACE_NET_STREAM_END);
    knownGlobals.push(DTRACE_NET_SERVER_CONNECTION);
    knownGlobals.push(DTRACE_NET_SOCKET_READ);
    knownGlobals.push(DTRACE_NET_SOCKET_WRITE);
  }

  for (var x in global) {
    var found = false;

    for (var y in knownGlobals) {
      if (global[x] === knownGlobals[y]) {
        found = true;
        break;
      }
    }

    if (!found) {
      console.error('Unknown global: %s', x);
      assert.ok(false, 'Unknown global founded');
    }
  }
});