Make packager_test.py work with python 3.0

Use logging instead of print.

Fixes #553.

Change-Id: I46b9a5bb9bb5d4cb03ddd94163905aebc4b4e9dd

packager/app/test/packager_app.py

@@ -7,6 +7,7 @@
 # https://developers.google.com/open-source/licenses/bsd
 """Test wrapper for the sample packager binaries."""
 
+import logging
 import os
 import platform
 import subprocess
@@ -68,7 +69,7 @@ class PackagerApp(object):
     self.packaging_command_line = ' '.join(["'%s'" % entry for entry in cmd])
     packaging_result = subprocess.call(cmd, env=self.GetEnv())
     if packaging_result != 0:
-      print '%s returned non-0 status' % self.packaging_command_line
+      logging.error('%s returned non-0 status', self.packaging_command_line)
     return packaging_result
 
   def GetCommandLine(self):

packager/app/test/packager_test.py

@@ -9,6 +9,7 @@
 
 import filecmp
 import glob
+import logging
 import os
 import re
 import shutil
@@ -192,7 +193,7 @@ def _UpdateMpdTimes(mpd_filepath):
     if m:
       old = m.group(0)
       out = str_in.replace(old, new)
-      print 'Replacing "%s" with "%s"' % (old, new)
+      logging.info('Replacing "%s" with "%s"', old, new)
     else:
       out = str_in
 
@@ -233,6 +234,7 @@ def GetSegmentedExtension(base_extension):
 class PackagerAppTest(unittest.TestCase):
 
   def setUp(self):
+    super(PackagerAppTest, self).setUp()
     self.packager = packager_app.PackagerApp()
     self.tmp_dir = tempfile.mkdtemp()
     self.test_data_dir = os.path.join(test_env.SRC_DIR, 'packager', 'media',
@@ -262,6 +264,7 @@ class PackagerAppTest(unittest.TestCase):
   def tearDown(self):
     if test_env.options.remove_temp_files_after_test:
       shutil.rmtree(self.tmp_dir)
+    super(PackagerAppTest, self).tearDown()
 
   def _GetStream(self,
                  descriptor,
@@ -1488,7 +1491,7 @@ class PackagerFunctionalTest(PackagerAppTest):
                          test_files=['bear-1280x720.mp4', 'bear-640x360.mp4',
                                      'bear-320x180.mp4']), flags)
     with open(self.mpd_output, 'rb') as f:
-      print f.read()
+      logging.info(f.read())
       # TODO(kqyang): Add some validations.
 
   @unittest.skipUnless(test_env.has_aes_flags, 'Requires AES credentials.')