<artifactId>testinvalidpom</artifactId>
  <version>0.0.1-SNAPSHOT</version>

  <build>
    <pluginManagement>
      <plugins>
        <plugin>
          <groupId></groupId>
          <artifactId>this-is-the-artifact</artifactId>
        </plugin>
      </plugins>
    </pluginManagement>
  </build>

  <artifactId>testinvalidpom</artifactId>
  <version>0.0.1-SNAPSHOT</version>

  <build>
    <pluginManagement>
      <plugins>
        <plugin>
          <groupId>the.groupId.Of.This.Plugin</groupId>
          <artifactId/>
        </plugin>
      </plugins>
    </pluginManagement>
  </build>

  <groupId>com.example.group</groupId>
  <artifactId>testinvalidpom</artifactId>
  <version>0.0.1-SNAPSHOT</version>

  <build>
    <pluginManagement>
      <plugins>
        <plugin>
          <groupId></groupId>
          <artifactId/>
        </plugin>
      </plugins>
    </pluginManagement>
  </build>

  <artifactId>testinvalidpom</artifactId>
  <version>0.0.1-SNAPSHOT</version>

  <build>
    <pluginManagement>
      <plugins>
        <plugin>
          <groupId>the.group.id</groupId>
          <artifactId>the.artifact</artifactId>
          <version/>
        </plugin>
      </plugins>
    </pluginManagement>
  </build>

            sitePlugin.setLocation("artifactId", location);
            PluginManagement pluginManagement = build.getPluginManagement();
            if (pluginManagement == null) {
                pluginManagement = new PluginManagement();
                build.setPluginManagement(pluginManagement);
            }
            pluginManagement.addPlugin(sitePlugin);
        }

/**
 * Tests {@code PluginManagement}.
 *
 */
class PluginManagementTest {

    @Test
    void testHashCodeNullSafe() {
        new PluginManagement().hashCode();
    }

    @Test
    void testEqualsNullSafe() {
        assertFalse(new PluginManagement().equals(null));

        new PluginManagement().equals(new PluginManagement());
    }

    @Test

                assertFalse(result.contains("</plugins></pluginManagement>"), "Should not have malformed closing tags");

                // Check that proper indentation is maintained for pluginManagement
                assertTrue(
                        result.contains("        <pluginManagement>"), "PluginManagement should be properly indented");
                assertTrue(

            }
            versions.put(plugin.getKey(), plugin.getVersion());
        }

        PluginManagement pluginManagement = project.getPluginManagement();
        if (pluginManagement != null) {
            for (Plugin plugin : pluginManagement.getPlugins()) {
                if (plugin.getVersion() == null) {
                    plugin.setVersion(versions.get(plugin.getKey()));

under the License.
-->

<project>
  <modelVersion>4.0.0</modelVersion>
  <artifactId>aid</artifactId>
  <groupId>gid</groupId>
  <version>0.1</version>
  <packaging>pom</packaging>

  <build>
    <pluginManagement>
      <plugins>
        <plugin>
          <groupId>build</groupId>
          <artifactId>managed-plugin</artifactId>
          <executions>
            <execution>
              <phase>test</phase>

  <packaging>pom</packaging>

  <build>
    <pluginManagement>
      <plugins>
        <plugin>
          <groupId>test</groupId>
          <artifactId>managed-duplicate</artifactId>
        </plugin>
        <plugin>
          <groupId>test</groupId>
          <artifactId>managed-duplicate</artifactId>
        </plugin>
      </plugins>
    </pluginManagement>
    <plugins>
      <plugin>