FixtureClass.java

// Modified or written by Object Mentor, Inc. for inclusion with FitNesse.
// Copyright (c) 2002 Cunningham & Cunningham, Inc.
// Released under the terms of the GNU General Public License version 2 or later.
package fit;

import fit.exception.ClassIsNotFixtureException;
import fit.exception.NoDefaultConstructorFixtureException;

public class FixtureClass {
  private Class<?> klass;

  public FixtureClass(Class<?> klass) {
    this.klass = klass;
  }

  public Fixture newInstance() throws IllegalAccessException {
    // Instantiate according to policies?
    // Example: policy #1 -- has default constructor
    // ...

    String fixtureClassName = klass.getName();

    try {
      Object fixtureAsObject = klass.newInstance();

      if (fixtureAsObject instanceof Fixture) {
        return (Fixture) fixtureAsObject;
      } else {
        throw new ClassIsNotFixtureException(fixtureClassName);
      }
    }
    catch (IllegalAccessException unhandled) {
      // TODO: Handle constructor not public?
      throw unhandled;
    }
    catch (InstantiationException e) {
      // TODO: Handle interface/abstract class case?
      throw new NoDefaultConstructorFixtureException(fixtureClassName);
    }
  }
}