PackagingProviderTestCase.java

package org.springframework.roo.project.packaging;

import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;

import java.net.URL;

import org.apache.commons.lang3.StringUtils;
import org.junit.Before;
import org.junit.Test;

/**
 * Convenient superclass for writing tests of concrete {@link PackagingProvider}
 * implementations.
 * 
 * @author Andrew Swan
 * @since 1.2.0
 */
public abstract class PackagingProviderTestCase<T extends AbstractPackagingProvider> {

  // Fixture
  private T provider;

  /**
   * Subclasses must return an instance of the provider being tested
   * 
   * @return a non-<code>null</code> instance
   */
  protected abstract T getProvider();

  @Before
  public void setUp() throws Exception {
    this.provider = getProvider();
  }

  @Test
  public void testIdIsNotBlank() {
    assertTrue(StringUtils.isNotBlank(provider.getId()));
  }

  @Test
  public void testTemplateExists() {
    // Set up
    final String pomTemplate = provider.getPomTemplate();

    // Invoke
    final URL pomTemplateUrl = provider.getClass().getResource(pomTemplate);

    // Check
    assertNotNull("Can't find POM template '" + pomTemplate + "'", pomTemplateUrl);
  }
}