} else {
            plugins = Collections.emptySet();
        }

        return plugins;
    }

    private Plugin newPlugin(String artifactId, String... goals) {
        Plugin plugin = new Plugin();

        plugin.setGroupId("org.apache.maven.plugins");
        plugin.setArtifactId(artifactId);

        for (String goal : goals) {
            PluginExecution pluginExecution = new PluginExecution();

import org.apache.maven.model.Plugin;
import org.apache.maven.plugin.MojoExecution;
import org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.plugin.PluginContainerException;
import org.apache.maven.plugin.PluginExecutionException;
import org.apache.maven.plugin.descriptor.MojoDescriptor;
import org.apache.maven.plugin.descriptor.PluginDescriptor;
import org.junit.jupiter.api.Test;

class PluginConfigurationModule implements Module {

    private final Plugin plugin;

    PluginConfigurationModule(Plugin plugin) {
        this.plugin = plugin;
    }

    @Override
    public void configure(Binder binder) {
        if (plugin.getKey() != null) {
            XmlNode configuration = plugin.getConfiguration();
            if (configuration == null) {

        descriptor.setArtifactId("maven-it-plugin");
        descriptor.setVersion("0.1");
        List<String> errors = new ArrayList<>();
        mavenPluginValidator.validate(plugin, descriptor, errors);
        assertFalse(errors.isEmpty(), "Expected collection to not be empty but was empty");
    }

    @Test
    void testInvalidArtifactId() {
        Artifact plugin = new DefaultArtifact(
                "org.apache.maven.its.plugins",

import org.apache.maven.execution.MavenSession;
import org.apache.maven.model.Plugin;
import org.apache.maven.plugin.InvalidPluginDescriptorException;
import org.apache.maven.plugin.MojoExecution;
import org.apache.maven.plugin.MojoNotFoundException;
import org.apache.maven.plugin.PluginDescriptorParsingException;
import org.apache.maven.plugin.PluginManagerException;
import org.apache.maven.plugin.PluginNotFoundException;

 * under the License.
 */
package org.apache.maven.plugin.logging;

import java.io.PrintWriter;
import java.io.StringWriter;

/**
 * Logger with "standard" output and error output stream.
 *
 *
 * @deprecated Use SLF4J directly
 */
@Deprecated
public class SystemStreamLog implements Log {
    /**
     * @see org.apache.maven.plugin.logging.Log#debug(java.lang.CharSequence)
     */
    @Override

import org.apache.maven.model.Plugin;
import org.apache.maven.plugin.InvalidPluginDescriptorException;
import org.apache.maven.plugin.MojoExecution;
import org.apache.maven.plugin.MojoNotFoundException;
import org.apache.maven.plugin.PluginDescriptorParsingException;
import org.apache.maven.plugin.PluginManagerException;
import org.apache.maven.plugin.PluginNotFoundException;

                new PluginUpgradeInfo(DEFAULT_MAVEN_PLUGIN_GROUP_ID, "maven-enforcer-plugin", "3.0.0"));
        upgrades.put(
                "org.codehaus.mojo:flatten-maven-plugin",
                new PluginUpgradeInfo("org.codehaus.mojo", "flatten-maven-plugin", "1.2.7"));
        upgrades.put(
                DEFAULT_MAVEN_PLUGIN_GROUP_ID + ":maven-shade-plugin",

    </plugin>
    <plugin>
      <name>Maven Integration Test Plugin</name>
      <prefix>jar</prefix>
      <artifactId>maven-jar-plugin</artifactId>
    </plugin>
    <plugin>
      <name>Maven Integration Test Plugin</name>
      <prefix>surefire</prefix>
      <artifactId>maven-surefire-plugin</artifactId>
    </plugin>
    <plugin>
      <name>Maven Integration Test Plugin</name>

        expected.add("maven-it-plugin-fork");
        expected.add("maven-it-plugin-touch");

        List<String> actual = new ArrayList<>();
        @SuppressWarnings("unchecked")
        List<Plugin> plugins = (List<Plugin>) pom.getValue("build/plugins");
        for (Plugin plugin : plugins) {
            actual.add(plugin.getArtifactId());
        }

        actual.retainAll(expected);