tapestry-test/src/main/java/org/apache/tapestry/test/ErrorReportingCommandProcessor.java

// Copyright 2007 The Apache Software Foundation
//
// Licensed 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 org.apache.tapestry.test;

import com.thoughtworks.selenium.CommandProcessor;

/**
 * A wrapper around a standard command processor that adds additional exception reporting when a
 * failure occurs.
 */
public class ErrorReportingCommandProcessor implements CommandProcessor
{
  private final CommandProcessor _delegate;

  public ErrorReportingCommandProcessor(final CommandProcessor delegate)
  {
    _delegate = delegate;
  }

  private static final String BORDER = "**********************************************************************";
  
  private void reportError(String command, String[] args, RuntimeException ex)
  {
    StringBuilder builder = new StringBuilder();

    builder.append(BORDER);
    builder.append("\nSeleninum failure processing comamnd ");
    builder.append(command);
    builder.append("(");

    for (int i = 0; i < args.length; i++)
    {
      if (i > 0) builder.append(", ");
      builder.append('"');
      builder.append(args[i]);
      builder.append('"');
    }

    builder.append("): ");
    builder.append(ex.toString());

    builder.append("\n\nPage source:\n\n");

    builder.append(_delegate.getString("getHtmlSource", new String[] {}));

    builder.append("\n");
    builder.append(BORDER);
        
    System.err.println(builder.toString());
  }

  public String doCommand(String command, String[] args)
  {
    try
    {
      return _delegate.doCommand(command, args);
    }
    catch (RuntimeException ex)
    {
      reportError(command, args, ex);
      throw ex;
    }
  }

  public boolean getBoolean(String string, String[] strings)
  {
    try
    {
      return _delegate.getBoolean(string, strings);
    }
    catch (RuntimeException ex)
    {
      reportError(string, strings, ex);
      throw ex;
    }
  }

  public boolean[] getBooleanArray(String string, String[] strings)
  {
    try
    {
      return _delegate.getBooleanArray(string, strings);
    }
    catch (RuntimeException ex)
    {
      reportError(string, strings, ex);
      throw ex;
    }
  }

  public Number getNumber(String string, String[] strings)
  {
    try
    {
      return _delegate.getNumber(string, strings);
    }
    catch (RuntimeException ex)
    {
      reportError(string, strings, ex);
      throw ex;
    }
  }

  public Number[] getNumberArray(String string, String[] strings)
  {
    try
    {
      return _delegate.getNumberArray(string, strings);
    }
    catch (RuntimeException ex)
    {
      reportError(string, strings, ex);
      throw ex;
    }
  }

  public String getString(String string, String[] strings)
  {
    try
    {
      return _delegate.getString(string, strings);
    }
    catch (RuntimeException ex)
    {
      reportError(string, strings, ex);
      throw ex;
    }
  }

  public String[] getStringArray(String string, String[] strings)
  {
    try
    {
      return _delegate.getStringArray(string, strings);
    }
    catch (RuntimeException ex)
    {
      reportError(string, strings, ex);
      throw ex;
    }
  }

  public void start()
  {
    _delegate.start();
  }

  public void stop()
  {
    _delegate.stop();
  }

}