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import os
from unittest import TextTestRunner, defaultTestLoader
from unittest.mock import MagicMock
from urllib.request import urlopen
import pytest
from vcr.unittest import VCRTestCase
def test_defaults():
class MyTest(VCRTestCase):
def test_foo(self):
pass
test = run_testcase(MyTest)[0][0]
expected_path = os.path.join(os.path.dirname(__file__), "cassettes")
expected_name = "MyTest.test_foo.yaml"
assert os.path.dirname(test.cassette._path) == expected_path
assert os.path.basename(test.cassette._path) == expected_name
def test_disabled():
# Baseline vcr_enabled = True
class MyTest(VCRTestCase):
def test_foo(self):
pass
test = run_testcase(MyTest)[0][0]
assert hasattr(test, "cassette")
# Test vcr_enabled = False
class MyTest(VCRTestCase):
vcr_enabled = False
def test_foo(self):
pass
test = run_testcase(MyTest)[0][0]
assert not hasattr(test, "cassette")
def test_cassette_library_dir():
class MyTest(VCRTestCase):
def test_foo(self):
pass
def _get_cassette_library_dir(self):
return "/testing"
test = run_testcase(MyTest)[0][0]
assert test.cassette._path.startswith("/testing/")
def test_cassette_name():
class MyTest(VCRTestCase):
def test_foo(self):
pass
def _get_cassette_name(self):
return "my-custom-name"
test = run_testcase(MyTest)[0][0]
assert os.path.basename(test.cassette._path) == "my-custom-name"
def test_vcr_kwargs_overridden():
class MyTest(VCRTestCase):
def test_foo(self):
pass
def _get_vcr_kwargs(self):
kwargs = super()._get_vcr_kwargs()
kwargs["record_mode"] = "new_episodes"
return kwargs
test = run_testcase(MyTest)[0][0]
assert test.cassette.record_mode == "new_episodes"
def test_vcr_kwargs_passed():
class MyTest(VCRTestCase):
def test_foo(self):
pass
def _get_vcr_kwargs(self):
return super()._get_vcr_kwargs(
record_mode="new_episodes",
)
test = run_testcase(MyTest)[0][0]
assert test.cassette.record_mode == "new_episodes"
def test_vcr_kwargs_cassette_dir():
# Test that _get_cassette_library_dir applies if cassette_library_dir
# is absent from vcr kwargs.
class MyTest(VCRTestCase):
def test_foo(self):
pass
def _get_vcr_kwargs(self):
return {
"record_mode": "new_episodes",
}
_get_cassette_library_dir = MagicMock(return_value="/testing")
test = run_testcase(MyTest)[0][0]
assert test.cassette._path.startswith("/testing/")
assert test._get_cassette_library_dir.call_count == 1
# Test that _get_cassette_library_dir is ignored if cassette_library_dir
# is present in vcr kwargs.
class MyTest(VCRTestCase):
def test_foo(self):
pass
def _get_vcr_kwargs(self):
return {
"cassette_library_dir": "/testing",
}
_get_cassette_library_dir = MagicMock(return_value="/ignored")
test = run_testcase(MyTest)[0][0]
assert test.cassette._path.startswith("/testing/")
assert test._get_cassette_library_dir.call_count == 0
@pytest.mark.online
def test_get_vcr_with_matcher(tmpdir):
cassette_dir = tmpdir.mkdir("cassettes")
assert len(cassette_dir.listdir()) == 0
mock_matcher = MagicMock(return_value=True, __name__="MockMatcher")
class MyTest(VCRTestCase):
def test_foo(self):
self.response = urlopen("http://example.com").read()
def _get_vcr(self):
myvcr = super()._get_vcr()
myvcr.register_matcher("mymatcher", mock_matcher)
myvcr.match_on = ["mymatcher"]
return myvcr
def _get_cassette_library_dir(self):
return str(cassette_dir)
# First run to fill cassette.
test = run_testcase(MyTest)[0][0]
assert len(test.cassette.requests) == 1
assert not mock_matcher.called # nothing in cassette
# Second run to call matcher.
test = run_testcase(MyTest)[0][0]
assert len(test.cassette.requests) == 1
assert mock_matcher.called
assert (
repr(mock_matcher.mock_calls[0])
== "call(<Request (GET) http://example.com>, <Request (GET) http://example.com>)"
)
@pytest.mark.online
def test_testcase_playback(tmpdir):
cassette_dir = tmpdir.mkdir("cassettes")
assert len(cassette_dir.listdir()) == 0
# First test actually reads from the web.
class MyTest(VCRTestCase):
def test_foo(self):
self.response = urlopen("http://example.com").read()
def _get_cassette_library_dir(self):
return str(cassette_dir)
test = run_testcase(MyTest)[0][0]
assert b"illustrative examples" in test.response
assert len(test.cassette.requests) == 1
assert test.cassette.play_count == 0
# Second test reads from cassette.
test2 = run_testcase(MyTest)[0][0]
assert test.cassette is not test2.cassette
assert b"illustrative examples" in test.response
assert len(test2.cassette.requests) == 1
assert test2.cassette.play_count == 1
def run_testcase(testcase_class):
"""Run all the tests in a TestCase and return them."""
suite = defaultTestLoader.loadTestsFromTestCase(testcase_class)
tests = list(suite._tests)
result = TextTestRunner().run(suite)
return tests, result
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