<modelVersion>4.0.0</modelVersion>
  <groupId>com.example.group</groupId>
  <artifactId>testinvalidpom</artifactId>
  <version>0.0.1-SNAPSHOT</version>

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

Benjamin Bentmann <******@****.***> 1243457293 +0000

-->

<project>
  <modelVersion>4.0.0</modelVersion>
  <artifactId>aid</artifactId>
  <groupId>gid</groupId>
  <version>1.0</version>

  <build>
    <plugins>
      <plugin>
        <artifactId>maven-it-plugin</artifactId>
        <version>1.0</version>
        <dependencies>
          <dependency>
            <!-- groupId missing -->
            <artifactId>a</artifactId>
            <version>2.0</version>

specific language governing permissions and limitations
under the License.
-->

<project>
  <modelVersion>4.0.0</modelVersion>
  <artifactId>foo</artifactId>
  <groupId>foo</groupId>
  <version>99.44</version>
  <packaging>bleh</packaging>
  <dependencies>
    <dependency>
      <artifactId>artifactId</artifactId>
      <version>1.0</version>
    </dependency>
  </dependencies>

specific language governing permissions and limitations
under the License.
-->

<project>
  <modelVersion>4.0.0</modelVersion>
  <artifactId>foo</artifactId>
  <groupId>foo</groupId>
  <version>99.44</version>
  <packaging>bleh</packaging>
  <dependencyManagement>
    <dependencies>
      <dependency>
        <artifactId>artifactId</artifactId>
        <version>version</version>

<project>
    <modelVersion>4.0.0</modelVersion>
    <groupId>group-one</groupId>
    <artifactId>artifact-one</artifactId>
    <version>version-one</version>

    <parent>
        <groupId>group-one</groupId>
        <artifactId>parent</artifactId>
        <version>version-one</version>
    </parent>

    <dependencies>
        <dependency>
            <groupId>group-two</groupId>

      <dependency>
        <groupId>org.apache.maven</groupId>
        <artifactId>maven-core</artifactId>
        <version>${project.version}</version>
      </dependency>
      <dependency>
        <groupId>org.apache.maven</groupId>
        <artifactId>maven-embedder</artifactId>
        <version>${project.version}</version>
      </dependency>
      <dependency>
        <groupId>org.apache.maven</groupId>

          <groupId>commons-logging</groupId>
          <artifactId>commons-logging-api</artifactId>
        </exclusion>
        <exclusion>
          <groupId>log4j</groupId>
          <artifactId>log4j</artifactId>
        </exclusion>
      </exclusions>
    </dependency>

    <dependency>
      <groupId>org.codehaus.plexus</groupId>
      <artifactId>plexus-utils</artifactId>
      <version>3.3.0</version>
      <type>jar</type>

        given:
        pomFile << """
<project>
    <modelVersion>4.0.0</modelVersion>
    <groupId>group-a</groupId>
    <artifactId>bom</artifactId>
    <version>1.0</version>
    <packaging>pom</packaging>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>group-b</groupId>
                <artifactId>module-b</artifactId>
                <version>1.0</version>

    <dependency>
      <groupId>org.apache.maven</groupId>
      <artifactId>maven-artifact</artifactId>
    </dependency>
    <dependency>
      <groupId>org.apache.maven</groupId>
      <artifactId>maven-plugin-api</artifactId>
    </dependency>
    <dependency>
      <groupId>org.apache.maven</groupId>
      <artifactId>maven-model-builder</artifactId>
    </dependency>
    <dependency>
      <groupId>org.apache.maven</groupId>