Question

如何使用Espresso从设计库中单击NavigationView中的menuItem？它可以在整个菜单可见的大型设备上正常工作，但在横向或较小的设备中，我的菜单底部不在屏幕上，我无法想出滚动/滑动到这些menuItem的方法，所以我可以点击它们。

通话：

onView(withText(R.string.contact_us)).perform(scrollTo()).check(matches(isDisplayed())).perform(click());

生成以下内容：

引起：java.lang.RuntimeException：不会执行操作因为目标视图与以下一个或多个不匹配约束:(视图有效可见性=可见并且是后代 of :(可从类中分配：类android.widget.ScrollView或是可从类分配：class android.widget.HorizontalScrollView））目标视图：＆＃34; NavigationMenuItemView {id = -1，visibility = VISIBLE， width = 888，height = 144，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 = 0.0，y = 1653.0，text =联系我们， input-type = 0，ime-target = false，has-links = false}＆＃34;

NavigationView继承自FrameLayout并正在进行画布移动以进行滚动。 https://developer.android.com/reference/android/support/design/widget/NavigationView.html

我尝试使用下面的操作编写一个customViewAction来慢慢滚动屏幕并检查menuItem是否可见，如果没有继续滚动，但我无法使其工作。

CoordinatesProvider coordinatesProvider = new CoordinatesProvider() {
        public float[] calculateCoordinates(View view) {
            float[] xy = GeneralLocation.BOTTOM_CENTER.calculateCoordinates(view);
            xy[0] += 0.0F * (float)view.getWidth();
            xy[1] += -0.083F * (float)view.getHeight();
            return xy;
        }
    };

onView(withId(R.id.navigation_view)).perform(new GeneralSwipeAction(Swipe.SLOW,
                             coordinatesProvider, GeneralLocation.TOP_CENTER, Press.FINGER));

onView(withText(R.string.contact_us)).check(matches(isDisplayed())).perform(click());

有没有人想出如何在Espresso上测试navigationView？我很确定我的customViewAction背后的逻辑可行，但我无法让它工作。

Answer 1

我想通了，我使用了自定义的viewAction

public static ViewAction swipeForTextToBeVisible(final String text, final long millis, final View navigationView) {
        return new ViewAction() {
            @Override
            public Matcher<View> getConstraints() {
                return isRoot();
            }

            @Override
            public String getDescription() {
                return "swipe for a specific view with text <" + text + "> during " + millis + " millis.";
            }

            @Override
            public void perform(final UiController uiController, final View view) {
                uiController.loopMainThreadUntilIdle();
                final long startTime = System.currentTimeMillis();
                final long endTime = startTime + millis;
                final Matcher<View> viewMatcher = withText(text);

                do {
                    boolean returnAfterOneMoreSwipe = false; //not sure why I have to do one more swipe but it works

                    for (View child : TreeIterables.breadthFirstViewTraversal(view)) {
                        // found view with required ID
                        if (viewMatcher.matches(child) && child.getVisibility() == View.VISIBLE) {
                            returnAfterOneMoreSwipe = true;
                        }
                    }

                    CoordinatesProvider coordinatesProvider = new CoordinatesProvider() {
                        public float[] calculateCoordinates(View view) {
                            float[] xy = GeneralLocation.BOTTOM_CENTER.calculateCoordinates(view);
                            xy[0] += 0.0F * (float)view.getWidth();
                            xy[1] += -0.083F * (float)view.getHeight();
                            return xy;
                        }
                    };

                    //Below code is c/p from perform in android/support/test/espresso/action/GeneralSwipeAction.class
                    float[] startCoordinates = coordinatesProvider.calculateCoordinates(navigationView);
                    float[] endCoordinates = GeneralLocation.TOP_CENTER.calculateCoordinates(navigationView);
                    float[] precision = Press.FINGER.describePrecision();
                    Swiper.Status status = Swiper.Status.FAILURE;

                    for(int tries = 0; tries < 3 && status != Swiper.Status.SUCCESS; ++tries) {
                        try {
                            status = Swipe.SLOW.sendSwipe(uiController, startCoordinates, endCoordinates, precision);
                        } catch (RuntimeException var9) {
                            throw (new PerformException.Builder()).withActionDescription(this.getDescription()).withViewDescription(HumanReadables.describe(navigationView)).withCause(var9).build();
                        }

                        int duration = ViewConfiguration.getPressedStateDuration();
                        if(duration > 0) {
                            uiController.loopMainThreadForAtLeast((long)duration);
                        }
                    }
                    //End c/p from android/support/test/espresso/action/GeneralSwipeAction.class

                    if (returnAfterOneMoreSwipe) {
                        return;
                    }

                    uiController.loopMainThreadForAtLeast(50);
                }
                while (System.currentTimeMillis() < endTime);

                // timeout happens
                throw new PerformException.Builder()
                        .withActionDescription(this.getDescription())
                        .withViewDescription(HumanReadables.describe(view))
                        .withCause(new TimeoutException())
                        .build();
            }
        };
    }

我不喜欢这个解决方案，它不是最干净的，因为出于某种原因，我必须再次刷卡后说它可见但是它有效。

要使用它，请使用以下内容进行调用：

onView(isRoot()).perform(CustomViewActions.swipeForTextToBeVisible(getActivity().getString(R.string.contact_us),2000, getActivity().findViewById(R.id.navigation_view)));

Answer 2

即使菜单项不可见（列表中某处），这对我也有用

onView（withId（R.id.nav_view））执行（NavigationViewActions.navigateTo（R.id.nav_login））;

Answer 3

您需要使用espresso-contrib：

import android.support.test.espresso.contrib.DrawerActions;

要打开菜单，您可以执行以下操作：

onView(withId(R.id.drawer_layout)).perform(DrawerActions.open());

您可以向下滚动到菜单项并检查它是否显示：

onView(withId(R.id.my_menu_item)).perform(scrollTo()).check(matches(isDisplayed()));

点击菜单项：

onView(withId(R.id.my_menu_item)).perform(click());

在使用Espresso进行测试时，如何在Android上的NavigationView中单击menuItem？

3 个答案: