fix #1139 CI build

- fix NPEs in TrackPointCreator.fill()
- fix locale dependant tests
- wait for UI components
- extract utility functions into EspressoUtils

src/androidTest/java/de/dennisguse/opentracks/EspressoDeleteTrackTest.java

@@ -13,22 +13,20 @@ import static androidx.test.espresso.matcher.ViewMatchers.withId;
 import static androidx.test.espresso.matcher.ViewMatchers.withText;
 import static org.hamcrest.Matchers.allOf;
 import static org.hamcrest.Matchers.anything;
+import static de.dennisguse.opentracks.util.EspressoUtils.childAtPosition;
+import static de.dennisguse.opentracks.util.EspressoUtils.veryLongTouch;
+import static de.dennisguse.opentracks.util.EspressoUtils.waitFor;
+import static de.dennisguse.opentracks.util.EspressoUtils.withListSize;
 
 import android.app.ActivityManager;
 import android.app.Instrumentation;
 import android.content.Context;
-import android.view.MotionEvent;
 import android.view.View;
-import android.view.ViewGroup;
-import android.view.ViewParent;
 import android.widget.ListView;
 
-import androidx.test.espresso.Espresso;
+import androidx.test.espresso.IdlingRegistry;
 import androidx.test.espresso.IdlingResource;
-import androidx.test.espresso.UiController;
-import androidx.test.espresso.ViewAction;
 import androidx.test.espresso.ViewInteraction;
-import androidx.test.espresso.action.MotionEvents;
 import androidx.test.espresso.assertion.ViewAssertions;
 import androidx.test.ext.junit.rules.ActivityScenarioRule;
 import androidx.test.ext.junit.runners.AndroidJUnit4;
@@ -37,7 +35,6 @@ import androidx.test.platform.app.InstrumentationRegistry;
 import androidx.test.rule.GrantPermissionRule;
 
 import org.hamcrest.Description;
-import org.hamcrest.Matcher;
 import org.hamcrest.TypeSafeMatcher;
 import org.junit.After;
 import org.junit.Before;
@@ -65,12 +62,12 @@ public class EspressoDeleteTrackTest {
         Instrumentation instrumentation
                 = InstrumentationRegistry.getInstrumentation();
         idlingResource = new MyIdlingResource(instrumentation.getTargetContext());
-        Espresso.registerIdlingResources(idlingResource);
+        IdlingRegistry.getInstance().register(idlingResource);
     }
 
     @After
     public void unregisterIntentServiceIdlingResource() {
-        Espresso.unregisterIdlingResources(idlingResource);
+        IdlingRegistry.getInstance().unregister(idlingResource);
     }
 
     @Ignore("Test fails permanently")
@@ -140,87 +137,6 @@ public class EspressoDeleteTrackTest {
         onView(withId(R.id.track_list)).check(ViewAssertions.matches(withListSize(countBefore - 1)));
     }
 
-    private static Matcher<View> childAtPosition(
-            final Matcher<View> parentMatcher, final int position) {
-
-        return new TypeSafeMatcher<>() {
-            @Override
-            public void describeTo(Description description) {
-                description.appendText("Child at position " + position + " in parent ");
-                parentMatcher.describeTo(description);
-            }
-
-            @Override
-            public boolean matchesSafely(View view) {
-                ViewParent parent = view.getParent();
-                return parent instanceof ViewGroup && parentMatcher.matches(parent)
-                        && view.equals(((ViewGroup) parent).getChildAt(position));
-            }
-        };
-    }
-
-    public static Matcher<View> withListSize (final int size) {
-        return new TypeSafeMatcher<>() {
-            @Override
-            public boolean matchesSafely(final View view) {
-                return ((ListView) view).getCount() == size;
-            }
-
-            @Override
-            public void describeTo(final Description description) {
-                description.appendText("ListView should have " + size + " items");
-            }
-        };
-    }
-
-    private static ViewAction waitFor(final long duration_ms) {
-        return new ViewAction() {
-
-            @Override
-            public String getDescription() {
-                return "Wait for milliseconds.";
-            }
-
-            @Override
-            public Matcher<View> getConstraints() {
-                return isDisplayed();
-            }
-
-            @Override
-            public void perform(UiController uiController, final View view) {
-                uiController.loopMainThreadForAtLeast(duration_ms);
-            }
-        };
-    }
-
-    private static ViewAction veryLongTouch(final int duration_ms) {
-        return new ViewAction() {
-            @Override
-            public String getDescription() {
-                return "Perform long touch.";
-            }
-
-            @Override
-            public Matcher<View> getConstraints() {
-                return isDisplayed();
-            }
-
-            @Override
-            public void perform(UiController uiController, final View view) {
-                // Get view absolute position
-                int[] location = new int[2];
-                view.getLocationOnScreen(location);
-
-                // Offset coordinates by view position
-                float[] coordinates = new float[]{location[0] + 1, location[1] + 1};
-
-                // Send down event, pause, and send up
-                MotionEvent down = MotionEvents.sendDown(uiController, coordinates, new float[]{1f, 1f}).down;
-                uiController.loopMainThreadForAtLeast(duration_ms);
-                MotionEvents.sendUp(uiController, down, coordinates);
-            }
-        };
-    }
 
     private int numberOfItemsListView() {
         final int[] counts = new int[1];

src/androidTest/java/de/dennisguse/opentracks/EspressoEditTrackRecordingTest.java

@@ -2,52 +2,43 @@ package de.dennisguse.opentracks;
 
 
 import static androidx.test.espresso.Espresso.onView;
+import static androidx.test.espresso.Espresso.openContextualActionModeOverflowMenu;
 import static androidx.test.espresso.action.ViewActions.click;
 import static androidx.test.espresso.action.ViewActions.closeSoftKeyboard;
 import static androidx.test.espresso.action.ViewActions.replaceText;
 import static androidx.test.espresso.action.ViewActions.scrollTo;
 import static androidx.test.espresso.assertion.ViewAssertions.matches;
 import static androidx.test.espresso.matcher.ViewMatchers.isDisplayed;
-import static androidx.test.espresso.matcher.ViewMatchers.isRoot;
 import static androidx.test.espresso.matcher.ViewMatchers.withClassName;
-import static androidx.test.espresso.matcher.ViewMatchers.withContentDescription;
 import static androidx.test.espresso.matcher.ViewMatchers.withId;
 import static androidx.test.espresso.matcher.ViewMatchers.withParent;
 import static androidx.test.espresso.matcher.ViewMatchers.withText;
 import static org.hamcrest.Matchers.allOf;
 import static org.hamcrest.Matchers.is;
+import static de.dennisguse.opentracks.util.EspressoUtils.childAtPosition;
+import static de.dennisguse.opentracks.util.EspressoUtils.veryLongTouch;
+import static de.dennisguse.opentracks.util.EspressoUtils.waitFor;
 
-import android.view.MotionEvent;
-import android.view.View;
-import android.view.ViewGroup;
-import android.view.ViewParent;
-
-import androidx.test.espresso.PerformException;
-import androidx.test.espresso.UiController;
-import androidx.test.espresso.ViewAction;
 import androidx.test.espresso.ViewInteraction;
-import androidx.test.espresso.action.MotionEvents;
-import androidx.test.espresso.util.HumanReadables;
-import androidx.test.espresso.util.TreeIterables;
 import androidx.test.ext.junit.rules.ActivityScenarioRule;
 import androidx.test.ext.junit.runners.AndroidJUnit4;
 import androidx.test.filters.LargeTest;
 import androidx.test.rule.GrantPermissionRule;
 
-import org.hamcrest.Description;
-import org.hamcrest.Matcher;
-import org.hamcrest.TypeSafeMatcher;
 import org.hamcrest.core.IsInstanceOf;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
-import java.util.concurrent.TimeoutException;
+import java.util.Locale;
 
 @LargeTest
 @RunWith(AndroidJUnit4.class)
 public class EspressoEditTrackRecordingTest {
 
+    @Rule
+    public final LocaleRule mLocaleRule = new LocaleRule(Locale.ENGLISH);
+
     @Rule
     public ActivityScenarioRule<TrackListActivity> mActivityTestRule = new ActivityScenarioRule<>(TrackListActivity.class);
 
@@ -71,26 +62,10 @@ public class EspressoEditTrackRecordingTest {
             trackControllerRecordButton.perform(waitFor(15000));
 
             // open menu
-            ViewInteraction overflowMenuButton = onView(
-                    allOf(withContentDescription("More options"),
-                            childAtPosition(
-                                    childAtPosition(
-                                            withId(R.id.toolbar),
-                                            2),
-                                    2),
-                            isDisplayed()));
-            overflowMenuButton.perform(click());
+            openContextualActionModeOverflowMenu();
 
-            // click on edit
-            ViewInteraction appCompatTextView = onView(
-                    allOf(withId(R.id.title), withText("Edit"),
-                            childAtPosition(
-                                    childAtPosition(
-                                            withId(R.id.content),
-                                            0),
-                                    0),
-                            isDisplayed()));
-            appCompatTextView.perform(click());
+            // Click the item.
+            onView(withText(R.string.menu_edit)).perform(click());
 
             // change name for "New Name"
             ViewInteraction textInputEditText = onView(
@@ -147,112 +122,4 @@ public class EspressoEditTrackRecordingTest {
         }
     }
 
-    private static Matcher<View> childAtPosition(
-            final Matcher<View> parentMatcher, final int position) {
-
-        return new TypeSafeMatcher<>() {
-            @Override
-            public void describeTo(Description description) {
-                description.appendText("Child at position " + position + " in parent ");
-                parentMatcher.describeTo(description);
-            }
-
-            @Override
-            public boolean matchesSafely(View view) {
-                ViewParent parent = view.getParent();
-                return parent instanceof ViewGroup && parentMatcher.matches(parent)
-                        && view.equals(((ViewGroup) parent).getChildAt(position));
-            }
-        };
-    }
-
-    public static ViewAction waitId(final int viewId, final long millis) {
-        return new ViewAction() {
-            @Override
-            public Matcher<View> getConstraints() {
-                return isRoot();
-            }
-
-            @Override
-            public String getDescription() {
-                return "wait for a specific view with id <" + viewId + "> 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 = withId(viewId);
-
-                do {
-                    for (View child : TreeIterables.breadthFirstViewTraversal(view)) {
-                        // found view with required ID
-                        if (viewMatcher.matches(child)) {
-                            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();
-            }
-        };
-    }
-
-    private static ViewAction waitFor(final long duration_ms) {
-        return new ViewAction() {
-
-            @Override
-            public String getDescription() {
-                return "Wait for milliseconds.";
-            }
-
-            @Override
-            public Matcher<View> getConstraints() {
-                return isDisplayed();
-            }
-
-            @Override
-            public void perform(UiController uiController, final View view) {
-                uiController.loopMainThreadForAtLeast(duration_ms);
-            }
-        };
-    }
-
-    private static ViewAction veryLongTouch(final int duration_ms) {
-        return new ViewAction() {
-            @Override
-            public String getDescription() {
-                return "Perform long touch.";
-            }
-
-            @Override
-            public Matcher<View> getConstraints() {
-                return isDisplayed();
-            }
-
-            @Override
-            public void perform(UiController uiController, final View view) {
-                // Get view absolute position
-                int[] location = new int[2];
-                view.getLocationOnScreen(location);
-
-                // Offset coordinates by view position
-                float[] coordinates = new float[]{location[0] + 1, location[1] + 1};
-
-                // Send down event, pause, and send up
-                MotionEvent down = MotionEvents.sendDown(uiController, coordinates, new float[]{1f, 1f}).down;
-                uiController.loopMainThreadForAtLeast(duration_ms);
-                MotionEvents.sendUp(uiController, down, coordinates);
-            }
-        };
-    }
 }

src/androidTest/java/de/dennisguse/opentracks/EspressoUITest.java

@@ -1,5 +1,15 @@
 package de.dennisguse.opentracks;
 
+import static androidx.test.espresso.Espresso.onData;
+import static androidx.test.espresso.Espresso.onView;
+import static androidx.test.espresso.action.ViewActions.click;
+import static androidx.test.espresso.assertion.ViewAssertions.matches;
+import static androidx.test.espresso.matcher.ViewMatchers.isDisplayed;
+import static androidx.test.espresso.matcher.ViewMatchers.withId;
+import static org.hamcrest.Matchers.anything;
+import static de.dennisguse.opentracks.util.EspressoUtils.selectTabAtIndex;
+import static de.dennisguse.opentracks.util.EspressoUtils.waitFor;
+
 import android.view.MotionEvent;
 import android.view.View;
 
@@ -12,21 +22,11 @@ import androidx.test.ext.junit.runners.AndroidJUnit4;
 import androidx.test.filters.LargeTest;
 import androidx.test.rule.GrantPermissionRule;
 
-import com.google.android.material.tabs.TabLayout;
-
 import org.hamcrest.Matcher;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
-import static androidx.test.espresso.Espresso.onData;
-import static androidx.test.espresso.Espresso.onView;
-import static androidx.test.espresso.action.ViewActions.click;
-import static androidx.test.espresso.assertion.ViewAssertions.matches;
-import static androidx.test.espresso.matcher.ViewMatchers.isDisplayed;
-import static androidx.test.espresso.matcher.ViewMatchers.withId;
-import static org.hamcrest.Matchers.anything;
-
 @LargeTest
 @RunWith(AndroidJUnit4.class)
 public class EspressoUITest {
@@ -136,43 +136,4 @@ public class EspressoUITest {
         };
     }
 
-    private static ViewAction waitFor(final long duration_ms) {
-        return new ViewAction() {
-
-            @Override
-            public String getDescription() {
-                return "Wait for milliseconds.";
-            }
-
-            @Override
-            public Matcher<View> getConstraints() {
-                return isDisplayed();
-            }
-
-            @Override
-            public void perform(UiController uiController, final View view) {
-                uiController.loopMainThreadForAtLeast(duration_ms);
-            }
-        };
-    }
-
-    private static ViewAction selectTabAtIndex(final int index) {
-        return new ViewAction() {
-            @Override
-            public String getDescription() {
-                return "Selecting tab.";
-            }
-
-            @Override
-            public Matcher<View> getConstraints() {
-                return isDisplayed();
-            }
-
-            @Override
-            public void perform(UiController uiController, View view) {
-                TabLayout tabLayout = (TabLayout) view;
-                tabLayout.getTabAt(index).select();
-            }
-        };
-    }
 }

src/androidTest/java/de/dennisguse/opentracks/LocaleRule.java

@@ -0,0 +1,55 @@
+package de.dennisguse.opentracks;
+
+import android.content.res.Configuration;
+import android.content.res.Resources;
+import android.util.DisplayMetrics;
+
+import androidx.test.core.app.ApplicationProvider;
+
+import org.junit.rules.TestRule;
+import org.junit.runner.Description;
+import org.junit.runners.model.Statement;
+
+import java.util.Locale;
+
+public class LocaleRule implements TestRule {
+
+    private final Locale[] mLocales;
+    private Locale mDeviceLocale;
+
+
+    public LocaleRule(Locale... locales) {
+        assert locales != null && locales.length > 0;
+        mLocales = locales;
+    }
+
+    @Override
+    public Statement apply(Statement base, Description description) {
+        return new Statement() {
+            @Override
+            public void evaluate() throws Throwable {
+                try {
+                    mDeviceLocale = Locale.getDefault();
+                    for (Locale locale : mLocales) {
+                        setLocale(locale);
+                        base.evaluate();
+                    }
+                } finally {
+                    if (mDeviceLocale != null) {
+                        setLocale(mDeviceLocale);
+                    }
+                }
+            }
+        };
+    }
+
+    private void setLocale(Locale locale) {
+        Resources resources = ApplicationProvider.getApplicationContext().getResources();
+        Locale.setDefault(locale);
+        Configuration config = resources.getConfiguration();
+        config.setLocale(locale);
+        DisplayMetrics displayMetrics = resources.getDisplayMetrics();
+        resources.updateConfiguration(config, displayMetrics);
+    }
+
+}

src/androidTest/java/de/dennisguse/opentracks/services/TrackRecordingServiceTestStateMachine.java

@@ -215,7 +215,7 @@ public class TrackRecordingServiceTestStateMachine {
 
         // when
         service.pauseCurrentTrack();
-        Thread.sleep(1000);
+        Thread.sleep(2000);
 
         // then
         assertEquals(TrackRecordingService.STATUS_DEFAULT, service.getRecordingStatusObservable().getValue());

src/androidTest/java/de/dennisguse/opentracks/services/announcement/VoiceAnnouncementUtilsTest.java

@@ -9,11 +9,14 @@ import androidx.test.core.app.ApplicationProvider;
 import androidx.test.ext.junit.runners.AndroidJUnit4;
 
 import org.junit.Before;
+import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
 import java.time.Duration;
+import java.util.Locale;
 
+import de.dennisguse.opentracks.LocaleRule;
 import de.dennisguse.opentracks.content.data.TestDataUtil;
 import de.dennisguse.opentracks.data.ContentProviderUtils;
 import de.dennisguse.opentracks.data.TrackPointIterator;
@@ -29,6 +32,9 @@ import de.dennisguse.opentracks.ui.intervals.IntervalStatistics;
 @RunWith(AndroidJUnit4.class)
 public class VoiceAnnouncementUtilsTest {
 
+    @Rule
+    public final LocaleRule mLocaleRule = new LocaleRule(Locale.ENGLISH);
+
     private final Context context = ApplicationProvider.getApplicationContext();
     private ContentProviderUtils contentProviderUtils;
 

src/androidTest/java/de/dennisguse/opentracks/share/DescriptionGeneratorTest.java

@@ -24,6 +24,7 @@ import androidx.test.core.app.ApplicationProvider;
 import androidx.test.ext.junit.runners.AndroidJUnit4;
 
 import org.junit.Before;
+import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
@@ -31,7 +32,9 @@ import java.time.Duration;
 import java.time.Instant;
 import java.time.OffsetDateTime;
 import java.time.ZoneId;
+import java.util.Locale;
 
+import de.dennisguse.opentracks.LocaleRule;
 import de.dennisguse.opentracks.R;
 import de.dennisguse.opentracks.data.models.Distance;
 import de.dennisguse.opentracks.data.models.Speed;
@@ -47,6 +50,9 @@ import de.dennisguse.opentracks.util.StringUtils;
 @RunWith(AndroidJUnit4.class)
 public class DescriptionGeneratorTest {
 
+    @Rule
+    public final LocaleRule mLocaleRule = new LocaleRule(Locale.ENGLISH);
+
     private static final Instant START_TIME = Instant.ofEpochMilli(1288721514000L);
     private DescriptionGenerator descriptionGenerator;
 

src/androidTest/java/de/dennisguse/opentracks/ui/aggregatedStatistics/EspressoAggregatedFilterTest.java

@@ -9,6 +9,7 @@ import static androidx.test.espresso.matcher.ViewMatchers.withId;
 import static androidx.test.espresso.matcher.ViewMatchers.withParent;
 import static androidx.test.espresso.matcher.ViewMatchers.withText;
 import static org.hamcrest.Matchers.allOf;
+import static de.dennisguse.opentracks.util.EspressoUtils.waitFor;
 
 import android.util.Pair;
 import android.view.View;
@@ -73,7 +74,7 @@ public class EspressoAggregatedFilterTest {
                         withParent(allOf(withId(R.id.filter_items),
                                 withParent(IsInstanceOf.<View>instanceOf(android.view.ViewGroup.class)))),
                         isDisplayed()));
-        checkBox.check(matches(isDisplayed()));
+        checkBox.perform(waitFor(2000));
 
         // check there's an edit text for "from date"
         onView(withId(R.id.filter_date_edit_text_from)).check(matches(isDisplayed()));
@@ -81,4 +82,5 @@ public class EspressoAggregatedFilterTest {
         // check there's an edit text for "to date"
         onView(withId(R.id.filter_date_edit_text_to)).check(matches(isDisplayed()));
     }
+
 }

src/androidTest/java/de/dennisguse/opentracks/ui/customRecordingLayout/EspressoCustomLayoutTest.java

@@ -4,31 +4,22 @@ package de.dennisguse.opentracks.ui.customRecordingLayout;
 import static androidx.test.espresso.Espresso.onView;
 import static androidx.test.espresso.action.ViewActions.click;
 import static androidx.test.espresso.matcher.ViewMatchers.assertThat;
-import static androidx.test.espresso.matcher.ViewMatchers.isDisplayed;
 import static androidx.test.espresso.matcher.ViewMatchers.withId;
 import static org.hamcrest.CoreMatchers.is;
+import static de.dennisguse.opentracks.util.EspressoUtils.veryLongTouch;
 
-import android.view.MotionEvent;
 import android.view.View;
-import android.view.ViewGroup;
-import android.view.ViewParent;
 
 import androidx.recyclerview.widget.RecyclerView;
 import androidx.test.espresso.NoMatchingViewException;
-import androidx.test.espresso.UiController;
-import androidx.test.espresso.ViewAction;
 import androidx.test.espresso.ViewAssertion;
 import androidx.test.espresso.ViewInteraction;
-import androidx.test.espresso.action.MotionEvents;
 import androidx.test.espresso.matcher.ViewMatchers;
 import androidx.test.ext.junit.rules.ActivityScenarioRule;
 import androidx.test.ext.junit.runners.AndroidJUnit4;
 import androidx.test.filters.LargeTest;
 import androidx.test.rule.GrantPermissionRule;
 
-import org.hamcrest.Description;
-import org.hamcrest.Matcher;
-import org.hamcrest.TypeSafeMatcher;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -82,51 +73,4 @@ public class EspressoCustomLayoutTest {
         }
     }
 
-    private static Matcher<View> childAtPosition(
-            final Matcher<View> parentMatcher, final int position) {
-
-        return new TypeSafeMatcher<>() {
-            @Override
-            public void describeTo(Description description) {
-                description.appendText("Child at position " + position + " in parent ");
-                parentMatcher.describeTo(description);
-            }
-
-            @Override
-            public boolean matchesSafely(View view) {
-                ViewParent parent = view.getParent();
-                return parent instanceof ViewGroup && parentMatcher.matches(parent)
-                        && view.equals(((ViewGroup) parent).getChildAt(position));
-            }
-        };
-    }
-
-    private static ViewAction veryLongTouch(final int duration_ms) {
-        return new ViewAction() {
-            @Override
-            public String getDescription() {
-                return "Perform long touch.";
-            }
-
-            @Override
-            public Matcher<View> getConstraints() {
-                return isDisplayed();
-            }
-
-            @Override
-            public void perform(UiController uiController, final View view) {
-                // Get view absolute position
-                int[] location = new int[2];
-                view.getLocationOnScreen(location);
-
-                // Offset coordinates by view position
-                float[] coordinates = new float[]{location[0] + 1, location[1] + 1};
-
-                // Send down event, pause, and send up
-                MotionEvent down = MotionEvents.sendDown(uiController, coordinates, new float[]{1f, 1f}).down;
-                uiController.loopMainThreadForAtLeast(duration_ms);
-                MotionEvents.sendUp(uiController, down, coordinates);
-            }
-        };
-    }
 }

src/androidTest/java/de/dennisguse/opentracks/util/EspressoUtils.java

@@ -0,0 +1,173 @@
+package de.dennisguse.opentracks.util;
+
+import static androidx.test.espresso.matcher.ViewMatchers.isDisplayed;
+import static androidx.test.espresso.matcher.ViewMatchers.isRoot;
+import static androidx.test.espresso.matcher.ViewMatchers.withId;
+import static androidx.test.espresso.util.TreeIterables.breadthFirstViewTraversal;
+
+import android.view.MotionEvent;
+import android.view.View;
+import android.view.ViewGroup;
+import android.view.ViewParent;
+import android.widget.ListView;
+
+import androidx.test.espresso.PerformException;
+import androidx.test.espresso.UiController;
+import androidx.test.espresso.ViewAction;
+import androidx.test.espresso.action.MotionEvents;
+import androidx.test.espresso.util.HumanReadables;
+
+import com.google.android.material.tabs.TabLayout;
+
+import org.hamcrest.Description;
+import org.hamcrest.Matcher;
+import org.hamcrest.TypeSafeMatcher;
+
+import java.util.concurrent.TimeoutException;
+
+public class EspressoUtils {
+
+    public static Matcher<View> childAtPosition(
+            final Matcher<View> parentMatcher, final int position) {
+
+        return new TypeSafeMatcher<>() {
+            @Override
+            public void describeTo(Description description) {
+                description.appendText("Child at position " + position + " in parent ");
+                parentMatcher.describeTo(description);
+            }
+
+            @Override
+            public boolean matchesSafely(View view) {
+                ViewParent parent = view.getParent();
+                return parent instanceof ViewGroup && parentMatcher.matches(parent)
+                        && view.equals(((ViewGroup) parent).getChildAt(position));
+            }
+        };
+    }
+
+    public static Matcher<View> withListSize (final int size) {
+        return new TypeSafeMatcher<>() {
+            @Override
+            public boolean matchesSafely(final View view) {
+                return ((ListView) view).getCount() == size;
+            }
+
+            @Override
+            public void describeTo(final Description description) {
+                description.appendText("ListView should have " + size + " items");
+            }
+        };
+    }
+
+    public static ViewAction waitFor(final long duration_ms) {
+        return new ViewAction() {
+
+            @Override
+            public String getDescription() {
+                return "Wait for milliseconds.";
+            }
+
+            @Override
+            public Matcher<View> getConstraints() {
+                return isDisplayed();
+            }
+
+            @Override
+            public void perform(UiController uiController, final View view) {
+                uiController.loopMainThreadForAtLeast(duration_ms);
+            }
+        };
+    }
+
+    public static ViewAction veryLongTouch(final int duration_ms) {
+        return new ViewAction() {
+            @Override
+            public String getDescription() {
+                return "Perform long touch.";
+            }
+
+            @Override
+            public Matcher<View> getConstraints() {
+                return isDisplayed();
+            }
+
+            @Override
+            public void perform(UiController uiController, final View view) {
+                // Get view absolute position
+                int[] location = new int[2];
+                view.getLocationOnScreen(location);
+
+                // Offset coordinates by view position
+                float[] coordinates = new float[]{location[0] + 1, location[1] + 1};
+
+                // Send down event, pause, and send up
+                MotionEvent down = MotionEvents.sendDown(uiController, coordinates, new float[]{1f, 1f}).down;
+                uiController.loopMainThreadForAtLeast(duration_ms);
+                MotionEvents.sendUp(uiController, down, coordinates);
+            }
+        };
+    }
+
+    public static ViewAction waitId(final int viewId, final long millis) {
+        return new ViewAction() {
+            @Override
+            public Matcher<View> getConstraints() {
+                return isRoot();
+            }
+
+            @Override
+            public String getDescription() {
+                return "wait for a specific view with id <" + viewId + "> 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 = withId(viewId);
+
+                do {
+                    for (View child : breadthFirstViewTraversal(view)) {
+                        // found view with required ID
+                        if (viewMatcher.matches(child)) {
+                            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();
+            }
+        };
+    }
+
+    public static ViewAction selectTabAtIndex(final int index) {
+        return new ViewAction() {
+            @Override
+            public String getDescription() {
+                return "Selecting tab.";
+            }
+
+            @Override
+            public Matcher<View> getConstraints() {
+                return isDisplayed();
+            }
+
+            @Override
+            public void perform(UiController uiController, View view) {
+                TabLayout tabLayout = (TabLayout) view;
+                tabLayout.getTabAt(index).select();
+            }
+        };
+    }
+
+}

src/androidTest/java/de/dennisguse/opentracks/util/StringUtilsTest.java

@@ -24,6 +24,7 @@ import android.content.Context;
 import androidx.test.core.app.ApplicationProvider;
 import androidx.test.ext.junit.runners.AndroidJUnit4;
 
+import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
@@ -45,6 +46,7 @@ import java.util.Locale;
 import java.util.TimeZone;
 import java.util.stream.Collectors;
 
+import de.dennisguse.opentracks.LocaleRule;
 import de.dennisguse.opentracks.data.models.Distance;
 import de.dennisguse.opentracks.data.models.Speed;
 
@@ -56,6 +58,9 @@ import de.dennisguse.opentracks.data.models.Speed;
 @RunWith(AndroidJUnit4.class)
 public class StringUtilsTest {
 
+    @Rule
+    public final LocaleRule mLocaleRule = new LocaleRule(Locale.ENGLISH);
+
     private final Context context = ApplicationProvider.getApplicationContext();
 
     /**

src/androidTest/java/de/dennisguse/opentracks/util/TrackNameUtilsTest.java

@@ -23,11 +23,14 @@ import android.content.Context;
 import androidx.test.core.app.ApplicationProvider;
 import androidx.test.ext.junit.runners.AndroidJUnit4;
 
+import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
 import java.time.OffsetDateTime;
+import java.util.Locale;
 
+import de.dennisguse.opentracks.LocaleRule;
 import de.dennisguse.opentracks.R;
 import de.dennisguse.opentracks.data.models.Track;
 import de.dennisguse.opentracks.settings.PreferencesUtils;
@@ -40,6 +43,9 @@ import de.dennisguse.opentracks.settings.PreferencesUtils;
 @RunWith(AndroidJUnit4.class)
 public class TrackNameUtilsTest {
 
+    @Rule
+    public final LocaleRule mLocaleRule = new LocaleRule(Locale.ENGLISH);
+
     private static final Track.Id TRACK_ID = new Track.Id(1L);
     private static final OffsetDateTime START_TIME = OffsetDateTime.parse("2022-01-02T10:15:30.1234+01:00");
 

src/main/java/de/dennisguse/opentracks/services/handlers/TrackPointCreator.java

@@ -85,8 +85,15 @@ public class TrackPointCreator implements BluetoothRemoteSensorManager.SensorDat
             Log.w(TAG, "Not started, should not be called.");
             return null;
         }
-        SensorDataSet sensorDataSet = remoteSensorManager.fill(trackPoint);
-        altitudeSumManager.fill(trackPoint);
+        SensorDataSet sensorDataSet = null;
+        BluetoothRemoteSensorManager localRemoteSensorManager = remoteSensorManager;
+        if (localRemoteSensorManager != null) {
+            sensorDataSet = localRemoteSensorManager.fill(trackPoint);
+        }
+        AltitudeSumManager localAltitudeSumManager = altitudeSumManager;
+        if (localAltitudeSumManager != null) {
+            localAltitudeSumManager.fill(trackPoint);
+        }
 
         return sensorDataSet;
     }