1 files changed, 45 insertions, 0 deletions
diff --git a/tests/src/cgeo/geocaching/export/GpxSerializerTest.java b/tests/src/cgeo/geocaching/export/GpxSerializerTest.java
index 0080b76..5c83b35 100644
--- a/tests/src/cgeo/geocaching/export/GpxSerializerTest.java
+++ b/tests/src/cgeo/geocaching/export/GpxSerializerTest.java
@@ -1,12 +1,19 @@
 package cgeo.geocaching.export;
 
 import cgeo.geocaching.Geocache;
+import cgeo.geocaching.files.GPX10Parser;
 import cgeo.geocaching.files.ParserException;
+import cgeo.geocaching.list.StoredList;
 import cgeo.geocaching.test.AbstractResourceInstrumentationTestCase;
 import cgeo.geocaching.test.R;
 
+import org.apache.commons.lang3.CharEncoding;
+
+import java.io.ByteArrayInputStream;
 import java.io.IOException;
+import java.io.InputStream;
 import java.io.StringWriter;
+import java.util.Collection;
 import java.util.Collections;
 import java.util.concurrent.atomic.AtomicReference;
 
@@ -34,4 +41,42 @@ public class GpxSerializerTest extends AbstractResourceInstrumentationTestCase {
         });
         assertEquals("Progress listener not called", 1, importedCount.get().intValue());
     }
+
+    /**
+     * This test verifies that a loop of import, export, import leads to the same cache information.
+     *
+     * @throws IOException
+     * @throws ParserException
+     */
+    public void testStableExportImportExport() throws IOException, ParserException {
+        final String geocode = "GC1BKP3";
+        final int cacheResource = R.raw.gc1bkp3_gpx101;
+        final Geocache cache = loadCacheFromResource(cacheResource);
+        assertNotNull(cache);
+
+        final String gpxFirst = getGPXFromCache(geocode);
+
+        assertTrue(gpxFirst.length() > 0);
+
+        final GPX10Parser parser = new GPX10Parser(StoredList.TEMPORARY_LIST_ID);
+
+        final InputStream stream = new ByteArrayInputStream(gpxFirst.getBytes(CharEncoding.UTF_8));
+        Collection<Geocache> caches = parser.parse(stream, null);
+        assertNotNull(caches);
+        assertEquals(1, caches.size());
+
+        final String gpxSecond = getGPXFromCache(geocode);
+        assertEquals(replaceLogIds(gpxFirst), replaceLogIds(gpxSecond));
+    }
+
+    private static String replaceLogIds(String gpx) {
+        return gpx.replaceAll("log id=\"\\d*\"", "");
+    }
+
+    private static String getGPXFromCache(String geocode) throws IOException {
+        final StringWriter writer = new StringWriter();
+        new GpxSerializer().writeGPX(Collections.singletonList(geocode), writer, null);
+        return writer.toString();
+    }
+
 }