4

I have been trying to test an app that has a menu drawer using Espresso.

Now for the strangeness.

In the first test, I open the drawer and click on an item then proceed with the rest of the test. That all works great.

When I add a second test that does the exact same thing, I get an exception. It appears to be something related to content of the menu drawer but I am at a loss.

The exception is this:

com.google.android.apps.common.testing.ui.espresso.PerformException: Error performing 'single click' on view '(with id: is <2131099739> and with text: is "Events")'.
at com.google.android.apps.common.testing.ui.espresso.PerformException$Builder.build(PerformException.java:67)
at com.google.android.apps.common.testing.ui.espresso.base.DefaultFailureHandler.getUserFriendlyError(DefaultFailureHandler.java:57)
at com.google.android.apps.common.testing.ui.espresso.base.DefaultFailureHandler.handle(DefaultFailureHandler.java:40)
at com.google.android.apps.common.testing.ui.espresso.ViewInteraction.runSynchronouslyOnUiThread(ViewInteraction.java:146)
at com.google.android.apps.common.testing.ui.espresso.ViewInteraction.doPerform(ViewInteraction.java:77)
at com.google.android.apps.common.testing.ui.espresso.ViewInteraction.perform(ViewInteraction.java:69)
at com.xxx.app.events.StackOverflowExampleTest.selectMenu(StackOverflowExampleTest.java:83)
at com.xxx.app.events.StackOverflowExampleTest.setUp(StackOverflowExampleTest.java:72)
at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:192)
at android.test.AndroidTestRunner.runTest(AndroidTestRunner.java:177)
at android.test.InstrumentationTestRunner.onStart(InstrumentationTestRunner.java:555)
at com.google.android.apps.common.testing.testrunner.GoogleInstrumentationTestRunner.onStart(GoogleInstrumentationTestRunner.java:119)
at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1608)
Caused by: java.lang.RuntimeException: Action will not be performed because the target view does not match one or more of the following constraints:
at least 90 percent of the view's area is displayed to the user.
Target view: "TextView{id=2131099739, res-name=menu_item_content, visibility=VISIBLE, width=432, height=112, has-focus=false, has-focusable=false, has-window-focus=true, is-clickable=false, is-enabled=true, is-focused=false, is-focusable=false, is-layout-requested=false, is-selected=false, root-is-layout-requested=false, has-input-connection=false, x=24.0, y=2.0, text=Events, input-type=0, ime-target=false}"
at com.google.android.apps.common.testing.ui.espresso.ViewInteraction$1.run(ViewInteraction.java:100)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:442)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
at java.util.concurrent.FutureTask.run(FutureTask.java:137)
at android.os.Handler.handleCallback(Handler.java:615)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4898)
at java.lang.reflect.Method.invokeNative(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1006)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:773)
at dalvik.system.NativeStart.main(Native Method)

And here is the test class

public class StackOverflowExampleTest extends ActivityInstrumentationTestCase2<MainActivity_>
{
    public StackOverflowExampleTest()
    {
        super(MainActivity_.class);
    }

    /**
     * Basic check for content displayed
     */
    @SuppressWarnings("unchecked")
    public void testSanityCheck()
    {
        // check title is shown
        onView(allOf(withId(R.id.event_view_title), isDisplayed())).check(
                        matches(withText("Isaac Vladimir Sinead Stacey"))); //$NON-NLS-1$

        // check content is shown
        onView(allOf(withId(R.id.event_view_text), isDisplayed())).check(
                        matches(withText(startsWith("Arcu ipsumcurabitur. Aliquammauris sodalessed arcu.")))); //$NON-NLS-1$

        // check "more details" is shown
        onView(allOf(withId(R.id.event_view_link), isDisplayed()))
                        .check(matches(withText(R.string.events_button_text)));
    }

    /**
     * Basic check for content displayed
     */
    @SuppressWarnings("unchecked")
    public void testSanityCheck2()
    {
        // check title is shown
        onView(allOf(withId(R.id.event_view_title), isDisplayed())).check(
                        matches(withText("Isaac Vladimir Sinead Stacey"))); //$NON-NLS-1$

        // check content is shown
        onView(allOf(withId(R.id.event_view_text), isDisplayed())).check(
                        matches(withText(startsWith("Arcu ipsumcurabitur. Aliquammauris sodalessed arcu.")))); //$NON-NLS-1$

        // check "more details" is shown
        onView(allOf(withId(R.id.event_view_link), isDisplayed()))
                        .check(matches(withText(R.string.events_button_text)));
    }

    @Override
    protected void setUp() throws Exception
    {
        super.setUp();

        // start the activity
        this.getActivity();

        // show events fragment
        this.selectMenu(R.string.menu_item_events);
    }

    @SuppressWarnings("unchecked")
    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
    protected void selectMenu(final int menuItemResId)
    {
        // open the drawer
        onView(withId(android.R.id.home)).perform(click());

        // click the supplied menu item (aka list item)
        onView(allOf(withId(R.id.menu_item_content), withText(this.getActivity().getString(menuItemResId)))).perform(
                        click());

    }
}
4

2 回答 2

15

当您要操作的视图在屏幕上不可见或部分可见时，我遇到了同样的问题。因此，如果您对屏幕上的某些视图有疑问 - 只需滚动到它，然后单击：

onView(withId(is(R.id.button_login))).perform(
    scrollTo(), 
    click());

如果您在包含项目列表的抽屉中遇到此问题，并且您想单击不可见的项目 - 使用 onData(...)。但是您必须先显示抽屉（请参阅如何在此处打开抽屉）：

onData(is(instanceOf(com.your.package.SomeDrawerItem.class)))
    .inAdapterView(withId(R.id.drawer_listview))
    .atPosition(itemPositionInDrawer).perform(click());
于 2013-12-19T14:03:27.463 回答
1

看起来抽屉中的视图尚不可见。您可以在对其执行任何操作之前尝试断言视图的可见性：

assertTrue(withEffectiveVisibility(Visibility.VISIBLE).matches(myView));
assertFalse(withEffectiveVisibility(Visibility.VISIBLE).matches(myView));
于 2013-11-25T10:38:57.507 回答