Configurable filename for export: used for all automatic exports after recording, exporting all, and sharing tracks.

Fixes #512.

src/androidTest/java/de/dennisguse/opentracks/io/file/TrackFilenameGeneratorTest.java

@@ -0,0 +1,60 @@
+package de.dennisguse.opentracks.io.file;
+
+import static org.junit.Assert.assertEquals;
+
+import androidx.test.core.app.ApplicationProvider;
+
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+
+import java.time.Instant;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.TimeZone;
+import java.util.UUID;
+
+import de.dennisguse.opentracks.R;
+import de.dennisguse.opentracks.TimezoneRule;
+import de.dennisguse.opentracks.data.models.Track;
+
+@RunWith(Parameterized.class)
+public class TrackFilenameGeneratorTest {
+
+    @Rule
+    public TimezoneRule timezoneRule = new TimezoneRule(TimeZone.getTimeZone("Europe/Berlin"));
+
+    @Parameterized.Parameters
+    public static Collection<String[]> data() {
+        return Arrays.asList(new String[][]{
+                {"{uuid}_{name}", "0000fee0_Best Track.gpx" },
+                {"{name}_{uuid}", "Best Track_0000fee0.gpx" },
+                {"{time}_{name}", "2020-02-02T02_02_02Z_Best Track.gpx" },
+                {ApplicationProvider.getApplicationContext().getString(R.string.export_filename_format_default), "2020-02-02T02_02_02Z_Best Track.gpx" },
+        });
+    }
+
+    private final TrackFilenameGenerator subject;
+    private final String expected;
+
+    public TrackFilenameGeneratorTest(String template, String expected) {
+        this.subject = new TrackFilenameGenerator(template);
+        this.expected = expected;
+    }
+
+    @Test
+    public void testFilenameTemplate() {
+        // given
+        Track track = new Track();
+        track.setName("Best Track");
+        track.setUuid(UUID.fromString("0000fee0-0000-1000-8000-00805f9b34fb"));
+        track.getTrackStatistics().setStartTime(Instant.parse("2020-02-02T02:02:02Z"));
+
+        // when
+        String filename = subject.format(track, TrackFileFormat.GPX);
+
+        // then
+        assertEquals(expected, filename);
+    }
+}

src/androidTest/java/de/dennisguse/opentracks/io/file/TrackFilenameGeneratorTest2.java

@@ -0,0 +1,44 @@
+package de.dennisguse.opentracks.io.file;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+
+import java.time.Instant;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.UUID;
+
+import de.dennisguse.opentracks.data.models.Track;
+
+//TODO Merge with TrackFilenameGeneratorTest whenever Junit5 gets available.
+//https://github.com/android/android-test/issues/224
+@RunWith(Parameterized.class)
+public class TrackFilenameGeneratorTest2 {
+
+    @Parameterized.Parameters
+    public static Collection<String> data() {
+        return Arrays.asList(
+                "{name}_{starime}",
+                "{name",
+                "name}");
+    }
+
+    private final TrackFilenameGenerator subject;
+
+    public TrackFilenameGeneratorTest2(String template) {
+        this.subject = new TrackFilenameGenerator(template);
+    }
+
+    @Test(expected = TrackFilenameGenerator.TemplateInvalidException.class)
+    public void testFilenameTemplate() {
+        // given
+        Track track = new Track();
+        track.setName("Best Track");
+        track.setUuid(UUID.fromString("0000fee0-0000-1000-8000-00805f9b34fb"));
+        track.getTrackStatistics().setStartTime(Instant.parse("2020-02-02T02:02:02Z"));
+
+        // when
+        String filename = subject.format(track, TrackFileFormat.GPX);
+    }
+}