Java Selenium RC as configured with Python objects

Chalk it up to diving into the deep end without a life ring, but it took a bit more work to get Java to use Python objects than it did the other way. I did eventually cobble together a solution based on various fragments dribbled around the interweb. There is a tonne of examples on how to use Java in Python, but there seems to be a hole for the inverse. Sure, there are Simple and Efficient Jython Object Factories, but to me they are neither simple, nor efficient. Simple and efficient would be importing a module and things Just Work&tm;.

Here is a simple JUnit test which checks whether a link is available to a certain user. Note how the url the Selenium server connects to is build from information in the python cf.environment dictionary. Likewise, the username and password come from cf.users.

import org.python.util.PythonInterpreter;
import org.python.core.*;
import junit.framework.*;
import com.thoughtworks.selenium.*;
import java.lang.System;
import java.lang.String;
 
public class ro_tmp_dsp_mnge_0002 extends TestCase {
    private Selenium browser;
 
    public void setUp() throws Exception {
        // get ourselves the config_file object
        PythonInterpreter interpreter = new PythonInterpreter();
        interpreter.exec("import ro.config_file");
        interpreter.exec("cf = ro.config_file.config_file()");
 
        // connect to the selenium proxy
        interpreter.exec("env = cf.environment");
        interpreter.exec("url = '%s://%s:%s' % (env['protocol'], env['host'], env['port'])");
        PyObject pyUrl = interpreter.get("url");
        String url = (String)pyUrl.__tojava__(String.class);
        browser = new DefaultSelenium("localhost", 4444, "*chrome", url);
        browser.start();
 
        // get our user info
        interpreter.exec("user = cf.users['setupuser']['username']");
        PyObject pyUser = interpreter.get("user");
        String username = (String)pyUser.__tojava__(String.class);
        interpreter.exec("password = cf.users['setupuser']['password']");
        PyObject pyPassword = interpreter.get("password");
        String password = (String)pyPassword.__tojava__(String.class);
 
        // login
        browser.open("/Web/myProduct");
        browser.selectFrame("LoginFrame");
        browser.type("Login.Token1", username);
        browser.type("Login.Token2", password);
        browser.click("realLogon");
    }
 
    protected void tearDown() throws Exception {
        browser.stop();
    }
 
    public void testTabNotAvailableToSetupUser() throws Throwable {
        assertFalse(browser.isElementPresent("link=Manage"));
    }
 
}

Now a Java programmer can add selenium based tests to the metaframework without having to know python (other than to parse and process the config file — which is painfully easy).

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