EDIT

/**

 *

 */

package eu.etaxonomy.dataportal.junit;

import java.io.IOException;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import org.apache.log4j.Logger;

import org.junit.After;

import org.junit.AfterClass;

import org.junit.Assert;

import org.junit.BeforeClass;

import org.junit.runner.RunWith;

import org.openqa.selenium.WebDriver;

import eu.etaxonomy.dataportal.DataPortalContext;

import eu.etaxonomy.dataportal.DataPortalSite;

import eu.etaxonomy.dataportal.DrupalVars;

import eu.etaxonomy.dataportal.selenium.WebDriverFactory;

import eu.etaxonomy.drush.DrushExecuter;

/**

 * @author a.kohlbecker

 *

 */

@RunWith(DataPortalContextSuite.class)

public abstract class CdmDataPortalTestBase extends Assert{

	public static final Logger logger = Logger.getLogger(CdmDataPortalTestBase.class);

	protected static WebDriver driver;

	private DataPortalContext context;

    private Map<String,String> drupalVarsBeforeTest = new HashMap<>();

	public DataPortalContext getContext() {

		return context;

	}

	public void setContext(DataPortalContext context) {

		this.context = context;

	}

	/**

     * Return the {@link DataPortalSite#getSiteUri()} of the currently active

     * context as String

     *

     * @return string representation of the DataPortal site URI

     */

    public String getSiteUrl() {

    	return context.getSiteUri().toString();

    }

    @BeforeClass

	public static void setUpDriver() {

		logger.debug("@BeforeClass: setUpDriver()");

		driver = WebDriverFactory.newWebDriver();

	}

	@AfterClass

	public static void closeDriver() {

		logger.debug("@AfterClass: closeDriver()");

		if (driver != null) {

			driver.quit();

		}

	}

	@After

    public void resetToOriginalState() throws IOException, InterruptedException {

        restoreOriginalVars();

    }

    /**

     * Safely set a Drupal variable to a new value. Any changes to the Drupal

     * variables are reset after the test through {@link #resetToOriginalState()}.

     *

     * @param varKey The key of the Drupal variable to set. In {@link DrupalVars}

     * predefined variable key constants can be found.

     *

     * @param varValue The value to set

     *

     * @throws IOException

     * @throws InterruptedException

     */

    protected void setDrupalVar(String varKey, String varValue) throws IOException, InterruptedException {

        DrushExecuter dex = getContext().drushExecuter();

        List<String> result = dex.execute(DrushExecuter.variableGet, varKey);

        assertEquals(1, result.size());

        if(!drupalVarsBeforeTest.containsKey(varKey)) {

            // stored original values must not be replaced

            drupalVarsBeforeTest.put(varKey, result.get(0));

        }

        result = dex.execute(DrushExecuter.variableSet, varKey, varValue);

        assertEquals("success", result.get(1));

    }

    protected void restoreOriginalVars() throws IOException, InterruptedException {

        DrushExecuter dex = getContext().drushExecuter();

        boolean fail = false;

        for(String varKey : drupalVarsBeforeTest.keySet()) {

            try {

                List<String> result = dex.execute(DrushExecuter.variableSet, varKey, drupalVarsBeforeTest.get(varKey));

                assertEquals("success", result.get(1));

            } catch (Exception e) {

                logger.error("FATAL ERROR: Restoring the original drupal variable " + varKey + " = " + drupalVarsBeforeTest.get(varKey) + " failed.", e);

                fail = true;

            }

        }

        drupalVarsBeforeTest.clear();

        if(fail) {

            throw new IOException("Restoring a original drupal variable has previously failed. You may want to fix the site settings manually!");

        }

    }

}