Tests hung indefinitely in CI, never completing. Root causes: no mocha timeout configuration, reconnect test waiting for events without error handling, and after hooks calling db.detach() without callbacks.

Changes

• Added .mocharc.json with 10s timeout and exit: true to force completion
• Fixed reconnect test to handle both success and failure paths:

  // Before: hung waiting for 'reconnect' event
  db.on('reconnect', function () {
    db.detach(done);
  });
  
  // After: handles errors, cleans up listeners
  var reconnectHandler = function () {
    db.removeListener('error', errorHandler);
    db.detach(done);
  };
  var errorHandler = function (err) {
    db.removeListener('reconnect', reconnectHandler);
    done(err);
  };
  db.on('reconnect', reconnectHandler);
  db.on('error', errorHandler);

• Added callbacks to all after() hooks to await detach completion:

  // Before: returns immediately
  after(function() {
    if (db) db.detach();
  });
  
  // After: waits for detach
  after(function(done) {
    if (db) {
      db.detach(done);
    } else {
      done();
    }
  });

Results

Primary test suite (index.js): 41 passing in <1s, previously hung indefinitely.

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