Remove dependency on requests

.gitlab-ci.yml

@@ -9,7 +9,7 @@ test:mipy:
   image: python:3.7
   interruptible: true
   script:
-    - 'pip install --upgrade mypy pytest types-requests'
+    - 'pip install --upgrade mypy pytest'
     - 'pip install --upgrade -r requirements.txt'
     - 'mypy updater'
   only:
@@ -25,7 +25,7 @@ test:pytest:
   image: python:3.8
   interruptible: true
   script:
-    - 'pip install --upgrade pytest coverage requests_mock'
+    - 'pip install --upgrade pytest coverage'
     - 'pip install --upgrade -r requirements.txt'
     - 'coverage run --source . --omit conf.py -m pytest --junitxml=report.xml'
     - 'coverage report'

requirements.txt

@@ -1,2 +1 @@
 pypubsub
-requests

test/test_core.py

@@ -1,10 +1,9 @@
 import sys
 import os
 import pytest
-import requests_mock
 from unittest import mock
 from json.decoder import JSONDecodeError
-from requests.exceptions import HTTPError
+from urllib.error import HTTPError
 from updater import core
 
 app_name: str = "a simple app"
@@ -17,45 +16,36 @@ win32api = mock.Mock(name="win32api")
 win32api.__name__ = "win32api"
 sys.modules["win32api"] = win32api
 
-def test_requests_session():
-    global app_name, current_version, endpoint
-    updater = core.UpdaterCore(endpoint=endpoint, app_name=app_name, current_version=current_version)
-    updater.create_session()
-    assert hasattr(updater, "session")
-    assert app_name in updater.session.headers.get("User-Agent")
-    assert current_version in updater.session.headers.get("User-Agent")
-
 def test_get_update_information_valid_json(file_data, json_data):
     global app_name, current_version, endpoint
     updater = core.UpdaterCore(endpoint=endpoint, app_name=app_name, current_version=current_version)
-    updater.create_session()
+    response = mock.Mock()
-    with requests_mock.Mocker(session=updater.session) as mocked:
+    response.getcode.return_value = 200
-        mocked.get(endpoint, json=json_data)
+    response.read.return_value = file_data
+    with mock.patch("urllib.request.urlopen", return_value=response):
         contents = updater.get_update_information()
         assert contents == json_data
 
 def test_get_update_information_invalid_json(file_data, json_data):
     global app_name, current_version, endpoint
     updater = core.UpdaterCore(endpoint=endpoint, app_name=app_name, current_version=current_version)
-    updater.create_session()
+    response = mock.Mock()
-    with requests_mock.Mocker(session=updater.session) as mocked:
+    response.getcode.return_value = 200
-        mocked.get(endpoint, text="thisisnotjson")
+    response.read.return_value = "invalid json"
+    with mock.patch("urllib.request.urlopen", return_value=response):
         with pytest.raises(JSONDecodeError):
             contents = updater.get_update_information()
 
 def test_get_update_information_not_found():
     global app_name, current_version, endpoint
     updater = core.UpdaterCore(endpoint=endpoint, app_name=app_name, current_version=current_version)
-    updater.create_session()
+    with mock.patch("urllib.request.urlopen", side_effect=HTTPError(updater.endpoint, 404, "not found", None, None)):
-    with requests_mock.Mocker(session=updater.session) as mocked:
-        mocked.get(endpoint, status_code=404)
         with pytest.raises(HTTPError):
             contents = updater.get_update_information()
 
 def test_version_data_no_update(json_data):
     global app_name, endpoint
     updater = core.UpdaterCore(endpoint=endpoint, app_name=app_name, current_version=json_data.get("current_version"))
-    updater.create_session()
     results = updater.get_version_data(json_data)
     assert results == (False, False, False)
 
@@ -66,7 +56,6 @@ def test_version_data_no_update(json_data):
 def test_version_data_update_available(json_data, platform, architecture):
     global app_name, current_version, endpoint
     updater = core.UpdaterCore(endpoint=endpoint, app_name=app_name, current_version=current_version)
-    updater.create_session()
     with mock.patch("platform.system", return_value=platform):
         with mock.patch("platform.architecture", return_value=architecture):
             results = updater.get_version_data(json_data)
@@ -76,25 +65,23 @@ def test_version_data_update_available(json_data, platform, architecture):
 def test_version_data_architecture_not_found(json_data):
     global app_name, current_version, endpoint
     updater = core.UpdaterCore(endpoint=endpoint, app_name=app_name, current_version=current_version)
-    updater.create_session()
     with mock.patch("platform.system", return_value="nonos"):
         with mock.patch("platform.architecture", return_value=("31bits", "")):
             with pytest.raises(KeyError):
                 results = updater.get_version_data(json_data)
 
+def fake_download_function(url, destination, callback):
+    callback(0, 1024, 2048)
+    return ("file", "headers")
+
 def test_download_update():
     global app_name, current_version, endpoint
     updater = core.UpdaterCore(endpoint=endpoint, app_name=app_name, current_version=current_version)
-    updater.create_session()
+    with mock.patch("pubsub.pub.sendMessage") as pub_sendMessage:
-    with mock.patch("pubsub.pub.sendMessage") as sendMessage_mock:
+        with mock.patch("urllib.request.urlretrieve", side_effect=fake_download_function):
-        with mock.patch("io.open") as open_mock:
-            with requests_mock.Mocker(session=updater.session) as mocker:
-                updatefile = os.path.join(os.path.dirname(__file__), "helloworld_v2_win64.zip")
-                mocker.get("http://downloads.update.org/update.zip", body=open(updatefile, "rb"))
             result = updater.download_update(update_url="http://downloads.update.org/update.zip", update_destination="update.zip")
-                open_mock.assert_called_once_with("update.zip", "w+b")
             assert result == "update.zip"
-                assert sendMessage_mock.call_count > 0
+            pub_sendMessage.assert_called_once()
 
 def test_extract_archive():
     # This only tests if archive extraction methods were called successfully and with the right parameters.

test/test_wxupdater.py

@@ -100,7 +100,6 @@ def test_on_update_almost_complete():
 @mock.patch("tempfile.mkdtemp", return_value="tmp")
 def test_check_for_updates_update_available(tempfile):
     updater = wxupdater.WXUpdater(endpoint="https://example.com/update.zip", app_name="My awesome application", current_version="0.1")
-    with mock.patch.object(updater, "create_session") as create_session:
     with mock.patch.object(updater, "initialize") as initialize:
         with mock.patch.object(updater, "get_update_information") as get_update_information:
             with mock.patch.object(updater, "get_version_data") as get_version_data:
@@ -120,12 +119,10 @@ def test_check_for_updates_update_available(tempfile):
                 get_version_data.assert_called_once()
             get_update_information.assert_called_once()
         initialize.assert_called_once()
-        create_session.assert_called_once()
 
 @mock.patch("tempfile.mkdtemp", return_value="tmp")
 def test_check_for_updates_no_update_available(tempfile):
     updater = wxupdater.WXUpdater(endpoint="https://example.com/update.zip", app_name="My awesome application", current_version="0.1")
-    with mock.patch.object(updater, "create_session") as create_session:
     with mock.patch.object(updater, "initialize") as initialize:
         with mock.patch.object(updater, "get_update_information") as update_information:
             with mock.patch.object(updater, "get_version_data", return_value=(False, False, False)) as get_version_data:
@@ -136,7 +133,6 @@ def test_check_for_updates_no_update_available(tempfile):
 @mock.patch("tempfile.mkdtemp", return_value="tmp")
 def test_check_for_updates_user_cancelled_update(tempfile):
     updater = wxupdater.WXUpdater(endpoint="https://example.com/update.zip", app_name="My awesome application", current_version="0.1")
-    with mock.patch.object(updater, "create_session") as create_session:
     with mock.patch.object(updater, "initialize") as initialize:
         with mock.patch.object(updater, "get_update_information") as update_information:
             with mock.patch.object(updater, "get_version_data") as get_version_data:

updater/core.py

@@ -9,7 +9,8 @@ import os
 import platform
 import zipfile
 import logging
-import requests
+import json
+import urllib.request
 from pubsub import pub # type: ignore
 from typing import Optional, Dict, Tuple, Union, Any
 from . import paths
@@ -38,22 +39,16 @@ class UpdaterCore(object):
         self.app_name = app_name
         self.password = password
 
-    def create_session(self) -> None:
-        """ Creates a requests session for calling update server. The session will add an user agent based in parameters passed to :py:class:`updater.core.updaterCore`'s constructor. """
-        user_agent: str = "%s/%s" % (self.app_name, self.current_version)
-        self.session: requests.Session = requests.Session()
-        self.session.headers['User-Agent'] = self.session.headers['User-Agent'] + user_agent
-
     def get_update_information(self) -> Dict[str, Any]:
         """ Calls the provided URL endpoint and returns information about the available update sent by the server. The format should adhere to the json specifications for updates.
 
-        If the server returns a status code different to 200 or the json file is not valid, this will raise either a :external:py:exc:`requests.HTTPError`, :external:py:exc:`requests.RequestException` or a :external:py:exc:`json.JSONDecodeError`.
+        If the server returns a status code different to 200 or the json file is not valid, this will raise either a :py:exc:`urllib.error.HTTPError` or a :external:py:exc:`json.JSONDecodeError`.
 
         :rtype: dict
         """
-        response: requests.Response = self.session.get(self.endpoint)
+        response = urllib.request.urlopen(self.endpoint)
-        response.raise_for_status()
+        data: str = response.read()
-        content: Dict[str, Any] = response.json()
+        content: Dict[str, Any] = json.loads(data)
         return content
 
     def get_version_data(self, content: Dict[str, Any]) -> Tuple[Union[bool, str], Union[bool, str], Union[bool, str]]:
@@ -99,17 +94,11 @@ class UpdaterCore(object):
         :returns: The update file path in the system.
         :rtype: str
         """
-        total_downloaded: int = 0
+        def _download_callback(transferred_blocks, block_size, total_size):
-        total_size: int = 0
+            total_downloaded = transferred_blocks*block_size
-        with io.open(update_destination, 'w+b') as outfile:
-            download: requests.Response = self.session.get(update_url, stream=True)
-            total_size = int(download.headers.get('content-length', 0))
-            log.debug("Total update size: %d" % total_size)
-            download.raise_for_status()
-            for chunk in download.iter_content(chunk_size):
-                outfile.write(chunk)
-                total_downloaded += len(chunk)
             pub.sendMessage("updater.update-progress", total_downloaded=total_downloaded, total_size=total_size)
+
+        filename, headers = urllib.request.urlretrieve(update_url, update_destination, _download_callback)
         log.debug("Update downloaded")
         return update_destination
 

updater/wxupdater.py

@@ -151,7 +151,6 @@ class WXUpdater(core.UpdaterCore):
 
         If there are updates available, displays a dialog to confirm the download of update. If the update downloads successfully, it also extracts and installs it.
         """
-        self.create_session()
         self.initialize()
         update_info = self.get_update_information()
         version_data = self.get_version_data(update_info)