title: importing correct AssertThat method for Robolectric Test
body: <p>I am attempting to run the test from Robolectric.org's <a href="http://robolectric.org/writing-a-test/" rel="noreferrer">Writing Your First Test</a> page. The test in question looks like this: </p>
  
  <pre><code>  @Test
    public void clickingLogin_shouldStartLoginActivity() {
      WelcomeActivity activity = Robolectric.setupActivity(WelcomeActivity.class);
      activity.findViewById(R.id.login).performClick();
  
      Intent expectedIntent = new Intent(activity, WelcomeActivity.class);
      assertThat(shadowOf(activity).getNextStartedActivity()).isEqualTo(expectedIntent);
    }
  </code></pre>
  
  <p>I get this compile error: <code>Cannot resolve method 'assertThat(android.content.Intent)</code>.  </p>
  
  <p>The two possibilities I see for importing this method are <a href="http://hamcrest.org/JavaHamcrest/javadoc/1.3/org/hamcrest/MatcherAssert.html" rel="noreferrer"><code>org.hamcrest.MatcherAssert.assertThat</code></a> and <a href="http://junit.sourceforge.net/javadoc/org/junit/Assert.html" rel="noreferrer"><code>org.junit.Assert.assertThat</code></a>, neither of which have a single-argument <code>assertThat</code> method as is being used in this Robolectric test.  </p>
  
  <p>My app's <code>build.gradle</code> has these dependencies:</p>
  
  <pre><code>dependencies {
      compile fileTree(dir: 'libs', include: ['*.jar'])
      compile 'com.android.support:appcompat-v7:23.1.0'
      compile 'com.android.support:design:23.1.0'
  
      testCompile "org.robolectric:robolectric:3.0"
      testCompile 'junit:junit:4.12'
  }
  </code></pre>
  
  <p>What framework/library is this test using?  </p>