procedure TstExifLE.ReadGPSTest;

var
imgInfo: TImgInfo;
lTag: TTag;
begin
  imgInfo := TImgInfo.Create;
  try
imgInfo.LoadFromFile(WorkFile_JpegWithExif);

lTag := imgInfo.ExifData.TagByName['GPSVersionID'];
CheckTrue(lTag <> nil, 'Tag "GPSVersionID" not found');
CheckTrue(lTag is TVersionTag, 'Tag "GPSVersionID" is not TVersionTag');
TVersionTag(lTag).Separator := '.';
CheckEquals('2.3.0.0', lTag.AsString, 'Value mismatch of tag "GPSVersionID"');

lTag := imgInfo.ExifData.TagByName['GPSLatitude'];
CheckTrue(lTag <> nil, 'Tag "GPSLatitude" not found');
CheckTrue(lTag is TGPSPositionTag, 'Tag "GPSLatitude" is not a TGpsPositionTag');
TGpsPositionTag(lTag).FormatStr := '%0:.0f deg %1:.0f'' %2:.2f"';
CheckEquals('51 deg 33'' 48.28"', lTag.AsString, 'Value mismatch of tag "GPSLatitude"');

lTag := imgInfo.ExifData.TagByName['GPSLatitudeRef'];
CheckTrue(lTag <> nil, 'Tag "GPSLatitudeRef" not found');
CheckEquals('South', lTag.AsString, 'Value mismatch of tag "GPSLatitudeRef"');

lTag := imgInfo.ExifData.TagByName['GPSLongitude'];
CheckTrue(lTag <> nil, 'Tag "GPSLongitude" not found');
CheckTrue(lTag is TGPSPositionTag, 'Tag "GPSLongitude" is not a TGpsPositionTag');
TGpsPositionTag(lTag).FormatStr := '%0:.0f deg %1:.0f'' %2:.2f"';
CheckEquals('59 deg 49'' 53.55"', lTag.AsString, 'Value mismatch of tag "GPSLongitude"');

lTag := imgInfo.ExifData.TagByName['GPSLongitudeRef'];
CheckTrue(lTag <> nil, 'Tag "GPSLongitudeRef" not found');
CheckEquals('West', lTag.AsString, 'Value mismatch of tag "GPSLongitudeRef"');

finally
imgInfo.Free;
  end;
end;