I have the following class which returns a coordinate depending on the
street name I enter.
public class CoordinateViaStreetNameFinder {
private Geocoder geocoder;
public CoordinateViaStreetNameFinder() {
geocoder = new Geocoder(ApplicationContext.getAppContext(),
Locale.GERMAN);
}
public Coordinate find(String streetName, String streetNr) throws
IOException {
String searchPattern = streetName + ", " + streetNr + ", AT";
List<Address> addresses =
geocoder.getFromLocationName(searchPattern, 1);
if (addresses == null || addresses.size() < 1) {
return null;
}
return new Coordinate(addresses.get(0).getLongitude(),
addresses.get(0).getLatitude());
}
}
This works for valid street names. When I enter an invalid street name like
"foobar street", I run into this exception, when the app tries to execute
the if statement:
java.lang.IndexOutOfBoundsException: Invalid location 0, size is 0
at java.util.ArrayList.get(ArrayList.java:341)
I'm a bit confused since getFromLocationName should return by definition
null or empty list. How does this error come then? I invoke this method in
a Android JUnit test:
This test works:
public void testValidResult() throws IOException {
CoordinateViaStreetNameFinder coordinateViaStreetNameFinder = new
CoordinateViaStreetNameFinder();
Coordinate coordinate =
coordinateViaStreetNameFinder.find("stephansplatz", "1");
assertEquals(16, (int)(coordinate.getLongitude()));
assertEquals(48, (int)(coordinate.getLatitude()));
}
This test produces the error.
public void testInvalidResult() throws IOException {
CoordinateViaStreetNameFinder coordinateViaStreetNameFinder = new
CoordinateViaStreetNameFinder();
Coordinate coordinate = coordinateViaStreetNameFinder.find("foobar
street", "1");
assertNull(coordinate);
}
What's wrong here?
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