{
        $this->expectException(UnexpectedAlertOpenException::class);

        $this->browse(function (Browser $browser) {
            $browser->loginToWave()
                ->goToSystemsEdit();

            $browser->waitFor('@delete-systems-button')
                ->click('@delete-systems-button')
                ->assertDialogOpened('This will delete the system. Please seek advice before doing this. Continue?')
                ->dismissDialog()
                ->assertPathBeginsWith('systems/edit');
        });
    }

1) TestsBrowserSystemsDeleteSystemTest::testSystemNotDeletedIfConfirmIsDismissed
FacebookWebDriverExceptionUnexpectedAlertOpenException: unexpected alert open: {Alert text : This will delete the system. Please seek advice before doing this. Continue?}
  (Session info: chrome=71.0.3578.98)
  (Driver info: chromedriver=2.45.615279 (12b89733300bd268cff3b78fc76cb8f3a7cc44e5),platform=Linux 4.9.125-linuxkit x86_64)