title: mvn integration-test vs mvn failsafe:integration-test
body: <p>I met a problem when I use maven failsafe plugin to run integration test.
  I have two classes one is TestUnitTest.java the other is TestIntegrationIT.java. 
  in pom.xml, I configure as below:</p>
  
  <pre><code>&lt;plugin&gt;                
      &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
      &lt;artifactId&gt;maven-surefire-plugin&lt;/artifactId&gt;
      &lt;configuration&gt;
          &lt;excludes&gt;
              &lt;exclude&gt;**/*IT.java&lt;/exclude&gt;
          &lt;/excludes&gt;
      &lt;/configuration&gt;
      &lt;executions&gt;
          &lt;execution&gt;
              &lt;id&gt;unit-tests&lt;/id&gt;
              &lt;phase&gt;test&lt;/phase&gt;
              &lt;goals&gt;
                  &lt;goal&gt;test&lt;/goal&gt;
              &lt;/goals&gt;
          &lt;/execution&gt;
      &lt;/executions&gt;
  &lt;/plugin&gt;
  &lt;plugin&gt;
      &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
      &lt;artifactId&gt;maven-failsafe-plugin&lt;/artifactId&gt;
      &lt;configuration&gt;
          &lt;includes&gt;
              &lt;include&gt;**/*IT.java&lt;/include&gt;
          &lt;/includes&gt;
      &lt;/configuration&gt;                    
      &lt;executions&gt;
          &lt;execution&gt;
              &lt;id&gt;integration-test&lt;/id&gt;
              &lt;phase&gt;integration-test&lt;/phase&gt;
              &lt;goals&gt;
                  &lt;goal&gt;integration-test&lt;/goal&gt;                           
              &lt;/goals&gt;
          &lt;/execution&gt;
      &lt;/executions&gt;
  &lt;/plugin&gt;
  </code></pre>
  
  <p>when I run mvn:integration-test, will execute both tests, when I run mvn failsafe:integration-test then only run the "TestIntegrationIT". Why output the different results?</p>