Index: trunk/test/unit/org/openstreetmap/josm/io/GeoJSONReaderTest.java
===================================================================
--- trunk/test/unit/org/openstreetmap/josm/io/GeoJSONReaderTest.java	(revision 17660)
+++ trunk/test/unit/org/openstreetmap/josm/io/GeoJSONReaderTest.java	(revision 17661)
@@ -5,6 +5,6 @@
 import static org.junit.jupiter.api.Assertions.assertFalse;
 import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertThrows;
 import static org.junit.jupiter.api.Assertions.assertTrue;
-import static org.junit.jupiter.api.Assertions.assertThrows;
 
 import java.io.ByteArrayInputStream;
@@ -19,6 +19,6 @@
 import java.util.stream.IntStream;
 
+import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.RegisterExtension;
-import org.junit.jupiter.api.Test;
 import org.openstreetmap.josm.TestUtils;
 import org.openstreetmap.josm.data.coor.LatLon;
@@ -224,7 +224,7 @@
         String featureCollection = "{\"type\": \"FeatureCollection\", \"features\": {}}";
         try (InputStream in = new ByteArrayInputStream(featureCollection.getBytes(StandardCharsets.UTF_8))) {
-            IllegalArgumentException exception = assertThrows(IllegalArgumentException.class,
+            IllegalDataException exception = assertThrows(IllegalDataException.class,
                     () -> new GeoJSONReader().doParseDataSet(in, null));
-            assertEquals("features must be ARRAY, but is OBJECT", exception.getMessage());
+            assertEquals("java.lang.IllegalArgumentException: features must be ARRAY, but is OBJECT", exception.getMessage());
         }
     }