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    * distributed with this work for additional information
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    * 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
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  package org.apache.maven.tools.plugin.extractor.annotations;
  
  import java.io.IOException;
  import java.net.URISyntaxException;
  import java.nio.file.Files;
  import java.nio.file.Path;
  import java.nio.file.Paths;
  import java.util.List;
  
  import org.apache.maven.artifact.Artifact;
  import org.apache.maven.artifact.DefaultArtifact;
  import org.apache.maven.plugin.AbstractMojo;
  import org.apache.maven.plugin.descriptor.InvalidPluginDescriptorException;
  import org.apache.maven.plugin.descriptor.MojoDescriptor;
  import org.apache.maven.plugin.descriptor.PluginDescriptor;
  import org.apache.maven.project.MavenProject;
  import org.apache.maven.tools.plugin.DefaultPluginToolsRequest;
  import org.apache.maven.tools.plugin.extractor.ExtractionException;
  import org.apache.maven.tools.plugin.extractor.annotations.scanner.DefaultMojoAnnotationsScanner;
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.io.TempDir;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  
  class JavaAnnotationsMojoDescriptorExtractorTest {
      @TempDir
      private Path targetDir;
  
      MojoDescriptor extractDescriptorFromMojoClass(Class<? extends AbstractMojo> mojoClass)
              throws InvalidPluginDescriptorException, ExtractionException, IOException, URISyntaxException {
          // copy class to an empty tmp directory
          Path sourceClass = Paths.get(
                  mojoClass.getResource(mojoClass.getSimpleName() + ".class").toURI());
          Files.copy(sourceClass, targetDir.resolve(sourceClass.getFileName()));
          JavaAnnotationsMojoDescriptorExtractor mojoDescriptorExtractor = new JavaAnnotationsMojoDescriptorExtractor();
          DefaultMojoAnnotationsScanner scanner = new DefaultMojoAnnotationsScanner();
          mojoDescriptorExtractor.mojoAnnotationsScanner = scanner;
          PluginDescriptor pluginDescriptor = new PluginDescriptor();
          MavenProject mavenProject = new MavenProject();
          Artifact artifact = new DefaultArtifact("groupId", "artifactId", "1.0.0", null, "jar", "classifier", null);
          mavenProject.setArtifact(artifact);
          mavenProject.getBuild().setOutputDirectory(targetDir.toString());
          List<MojoDescriptor> mojoDescriptors =
                  mojoDescriptorExtractor.execute(new DefaultPluginToolsRequest(mavenProject, pluginDescriptor));
          assertEquals(1, mojoDescriptors.size());
          // there should be only one mojo contained in the one class
          return mojoDescriptors.get(0);
      }
  
      @Test
      void assertFooMojo() throws InvalidPluginDescriptorException, ExtractionException, IOException, URISyntaxException {
          MojoDescriptor mojoDescriptor = extractDescriptorFromMojoClass(FooMojo.class);
          assertEquals("package", mojoDescriptor.getExecutePhase());
          assertEquals("compiler", mojoDescriptor.getExecuteGoal());
          assertEquals("my-lifecycle", mojoDescriptor.getExecuteLifecycle());
      }
  
      @Test
      void assertExecuteMojo()
              throws InvalidPluginDescriptorException, ExtractionException, IOException, URISyntaxException {
          MojoDescriptor mojoDescriptor = extractDescriptorFromMojoClass(ExecuteMojo.class);
          assertEquals("my-phase-id", mojoDescriptor.getExecutePhase());
          assertEquals("compiler", mojoDescriptor.getExecuteGoal());
          assertEquals("my-lifecycle", mojoDescriptor.getExecuteLifecycle());
      }
  
      @Test
      void assertExecute2Mojo()
              throws InvalidPluginDescriptorException, ExtractionException, IOException, URISyntaxException {
          // two conflicting phase ids set
          assertThrows(InvalidPluginDescriptorException.class, () -> extractDescriptorFromMojoClass(Execute2Mojo.class));
      }
  }