title: AndroidJUnitRunner doesn't run tests in package
body: <p>I'm able to run the instrumentation tests just if I specify the class.</p>
  
  <pre><code>adb shell am instrument -w -e class com.application.instrumentation.BaseActivityTest com.application.debug.test/android.support.test.runner.AndroidJUnitRunner
  
  com.application.instrumentation.BaseActivityTest:.
  
  Time: 2.204
  
  OK (1 test)
  </code></pre>
  
  <p>All my instrumentation tests located in <code>com.application.instrumentation</code> package. When I'm trying to run all tests in this package, instrumentation can't locate any test.</p>
  
  <pre><code>adb shell am instrument -w -r -e package com.application.instrumentation com.application.debug.test/android.support.test.runner.AndroidJUnitRunner
  INSTRUMENTATION_RESULT: stream=
  
  Time: 0
  
  OK (0 tests)
  
  
  INSTRUMENTATION_CODE: -1
  </code></pre>
  
  <p>Same for <code>AndroidStudio</code> - I'm able to run tests in specific class and not in the whole package.</p>
  
  <p><strong>BaseActivityTest.java</strong></p>
  
  <pre><code>@RunWith(AndroidJUnit4.class)
  @LargeTest
  public class BaseActivityTest
              extends ActivityInstrumentationTestCase2&lt;BaseActivity&gt; {
  
      private BaseActivity mActivity;
  
      public BaseActivityTest() {
          super(BaseActivity.class);
      }
  
      @Before
      public void setUp() throws Exception {
          super.setUp();
          injectInstrumentation(InstrumentationRegistry.getInstrumentation());
          mActivity = getActivity();
      }
  
      @Test
      public void checkPreconditions() {
          assertThat(mActivity, notNullValue());
          // Check that Instrumentation was correctly injected in setUp()
          assertThat(getInstrumentation(), notNullValue());
      }
  
      @After
      public void tearDown() throws Exception {
          super.tearDown();
      }
  
  }
  </code></pre>
  
  <p><code>AndroidStudio</code> version is <code>1.2.2</code>.</p>
  
  <p><strong>Test dependencies:</strong></p>
  
  <pre><code>androidTestCompile 'com.android.support.test.espresso:espresso-core:2.2'
  androidTestCompile 'com.android.support.test:runner:0.3'
  androidTestCompile 'com.android.support.test:rules:0.3'
  androidTestCompile ('com.android.support.test.espresso:espresso-contrib:2.0') {
      exclude group: 'com.android.support', module: 'appcompat'
      exclude group: 'com.android.support', module: 'support-v4'
      exclude module: 'recyclerview-v7'
  }
  </code></pre>
  
  <p><strong>Available instrumentations:</strong></p>
  
  <pre><code>adb shell pm list instrumentation
  instrumentation:com.application.debug.test/android.support.test.runner.AndroidJUnitRunner (target=com.application.debug)
  </code></pre>