def test_raise_if_not_needed(self):
# define decorated function without any socket activity - this either
# raises a UserWarning or Exception depending on raise_if_not_needed
# option
@vcr(debug=True)
def temp_test():
pass
# run the test - recording mode - raises a UserWarning (default)
with catch_stdout() as out:
with warnings.catch_warnings(record=True) as w:
warnings.simplefilter("always")
temp_test()
self.assertIn('VCR RECORDING', out.getvalue())
self.assertIn('no socket activity', str(w[-1].message))
self.assertEquals(w[-1].category, UserWarning)
# .vcr file should not exist
self.assertEqual(os.path.exists(self.temp_test_vcr), False)
# now enable playback_only mode
VCRSystem.raise_if_not_needed = True
# re-run the test - recording mode - raises an Exception
with catch_stdout() as out:
with self.assertRaisesRegex(Exception, 'no socket activity'):
temp_test()
self.assertIn('VCR RECORDING', out.getvalue())
# .vcr file should not exist
self.assertEqual(os.path.exists(self.temp_test_vcr), False)
def test_playback_only(self):
# define decorated function without existing vcr tape
@vcr(debug=True)
def temp_test():
r = urlopen('https://www.python.org/')
self.assertEqual(r.code, 200)
# .vcr file should not exist
self.assertEqual(os.path.exists(self.temp_test_vcr), False)
# now enable playback_only mode
VCRSystem.playback_only = True
# run the test - playback mode but raises exception due to missing tape
with catch_stdout() as out:
with self.assertRaisesRegex(IOError, "Missing VCR tape file"):
temp_test()
self.assertIn('VCR PLAYBACK', out.getvalue())
# .vcr file should not exist
self.assertEqual(os.path.exists(self.temp_test_vcr), False)
# reset
VCRSystem.reset()
# re-run the test - now record mode without exception
with catch_stdout() as out:
temp_test()
self.assertIn('VCR RECORDING', out.getvalue())
# now .vcr file should exist
self.assertEqual(os.path.exists(self.temp_test_vcr), True)
def test_disabled(self):
# no disabled but debug mode on decorator level
@vcr(debug=True)
def read_test():
r = urlopen('https://www.python.org/')
self.assertEqual(r.code, 200)
# run the test - there should be output due to debug
with catch_stdout() as out:
read_test()
self.assertIn('VCR PLAYBACK', out.getvalue())
# now enable disabled mode
VCRSystem.disabled = True
# re-run the test - there should be no output
with catch_stdout() as out:
read_test()
self.assertEqual(out.getvalue(), '')
# reset
VCRSystem.reset()
# re-run the test - again output due to debug mode on decorator level
with catch_stdout() as out:
read_test()
self.assertIn('VCR PLAYBACK', out.getvalue())
def test_life_cycle(self):
# define function with @vcr decorator and enable debug mode
@vcr(debug=True)
def temp_test():
r = urlopen('https://www.python.org/')
self.assertEqual(r.code, 200)
# an initial run of our little test will start in recording mode
# and auto-generate a .vcr file - however, this file shouldn't exist at
# the moment
self.assertEqual(os.path.exists(self.temp_test_vcr), False)
# run the test
with catch_stdout() as out:
temp_test()
# debug mode should state its in recording mode
self.assertIn('VCR RECORDING', out.getvalue())
# now the .vcr file should exist
self.assertEqual(os.path.exists(self.temp_test_vcr), True)
# re-run the test - this time it should be using the recorded file
with catch_stdout() as out:
temp_test()
# debug mode should state its in playback mode
self.assertIn('VCR PLAYBACK', out.getvalue())
def test_playback_with_debug(self):
# define function with decorator
@vcr(debug=True)
def read_test():
r = urlopen('https://www.python.org/')
self.assertEqual(r.code, 200)
# run the test
with catch_stdout() as out:
read_test()
self.assertIn('VCR PLAYBACK', out.getvalue())
def test_playback(self):
# define function with decorator
@vcr
def read_test():
r = urlopen('https://www.python.org/')
self.assertEqual(r.code, 200)
# run the test
with catch_stdout() as out:
read_test()
self.assertEqual(out.getvalue(), '')
def test_record(self):
# define function with @vcr decorator
@vcr
def temp_test():
r = urlopen('https://www.python.org/')
self.assertEqual(r.code, 200)
# .vcr file should not exist at the moment
self.assertEqual(os.path.exists(self.temp_test_vcr), False)
# run the test
with catch_stdout() as out:
temp_test()
self.assertEqual(out.getvalue(), '')
# .vcr file should now exist
self.assertEqual(os.path.exists(self.temp_test_vcr), True)
