text: a = db.getSisterDB("copydb2-test-a");
  b = db.getSisterDB("copydb2-test-b");
  
  a.dropDatabase();
  b.dropDatabase();
  a.dropAllUsers();
  b.dropAllUsers();
  
  a.foo.save({a: 1});
  
  a.createUser({user: "chevy", pwd: "chase", roles: jsTest.basicUserRoles});
  
  assert.eq(1, a.foo.count(), "A");
  assert.eq(0, b.foo.count(), "B");
  
  // SERVER-727
  a.copyDatabase(a._name, b._name, "", "chevy", "chase");
  assert.eq(1, a.foo.count(), "C");
  assert.eq(1, b.foo.count(), "D");
  