add python test for add_torrent_params and run the tests less verbose on travis and appveyor

.travis.yml

@@ -248,9 +248,9 @@ script:
   - 'if [[ "$python" == "1" ]]; then
       bjam -j3 warnings-as-errors=on warnings=all crypto=$crypto debug-iterators=on picker-debugging=on asserts=on invariant-checks=full $toolset variant=$variant stage_module stage_dependencies libtorrent-link=shared boost-link=shared &&
       if [[ $TRAVIS_OS_NAME == "osx" ]]; then
-        DYLD_LIBRARY_PATH=./dependencies python2 test.py;
+        DYLD_LIBRARY_PATH=./dependencies python2 test.py -b;
       else
-        LD_LIBRARY_PATH=./dependencies python test.py;
+        LD_LIBRARY_PATH=./dependencies python test.py -b;
       fi;
     fi'
   - cd ../..;

appveyor.yml

@@ -109,7 +109,7 @@ test_script:
 # we use 64 bit python build
 - if defined python (
   copy dependencies\*.* .
-  & c:\Python35-x64\python.exe test.py
+  & c:\Python35-x64\python.exe test.py -b
   )
 
 # simulation tests

bindings/python/test.py

@@ -45,6 +45,13 @@ class test_create_torrent(unittest.TestCase):
 
 class test_session_stats(unittest.TestCase):
 
+    def test_add_torrent_params(self):
+        atp = lt.add_torrent_params()
+
+        for field_name in dir(atp):
+            field = getattr(atp, field_name)
+            print(field_name, field)
+
     def test_unique(self):
         metrics = lt.session_stats_metrics()
         self.assertTrue(len(metrics) > 40)