/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an
 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *  KIND, either express or implied.  See the License for the
 *  specific language governing permissions and limitations
 *  under the License.
 *
 */
package test.sdo21.framework;

import junit.framework.TestCase;
import commonj.sdo.helper.HelperContext;

/**
 * A superclass for tests classes.  It creates a HelperContext per test case invocation
 * and provides initialization/access to the implementation sepcific test helper.
 * See also the {@link test.sdo21.framework.junit3_8.CTSTestCase} Junit 3.8 variant of this
 * class which inherits from {@link TestCase} in the junit 3.8 style of testing,
 * but delegates to this class for much of its CTS function.
 */
public class CTSTestCase {

  private static TestHelper testHelper = null; 
  private HelperContext scope = null;
  public static final String SDO_CTS_TESTHELPER_CLASS = "CTS_TEST_HELPER";
  
  private static void initTestHelper() throws Exception {
    String helperClassName = System.getenv(SDO_CTS_TESTHELPER_CLASS);
    
    if ((helperClassName == null) || (helperClassName.equals(""))) {
        System.out.println(SDO_CTS_TESTHELPER_CLASS + " was not set - attempting Tuscany implementation : "
            + helperClassName);
        helperClassName = "test.sdo21.vendor.tuscany.testHelper.TuscanyTestHelper";
    }

    testHelper = (TestHelper)Class.forName(helperClassName).newInstance();
    System.out.println("Loaded " + helperClassName);
    // initialize SDO implementation
    testHelper.init();
  }
  

  public void setUp() throws Exception {
    scope = getTestHelper().createHelperContext();
  }


  public void tearDown() throws Exception {
    scope = null;
  }

  public HelperContext getScope() {
    return scope;
  }

  public static TestHelper getTestHelper() {
    if(testHelper == null) {
      try {
        initTestHelper();
      } catch (Exception e) {
        e.printStackTrace();
      }
    }
    return testHelper;
  }

}