Use pytest with --cov option

Author: wkeeling

.coveragerc

@@ -0,0 +1,2 @@
+[run]
+omit = seleniumwire/thirdparty/*

setup.py

@@ -53,8 +53,10 @@
         'dev': [
             'coverage',
             'flake8',
-            'nose',
+            'mitmproxy',  # This should be removed once the mitmproxy backend goes
             'pre-commit',
+            'pytest',
+            'pytest-cov',
             'tox',
             'twine',
             'wheel',

tox.ini

@@ -15,17 +15,6 @@ commands = flake8 seleniumwire
 [testenv]
 setenv =
     PYTHONPATH = {toxinidir}
-
-[testenv:py{36,37,38}]
-;setenv =
-    ; This makes the AdminClientIntegrationTest run against the mitmproxy backend.
-    ; We currently rely on the default backend being tested by the py34/py35 tests.
-    ;SW_TEST_BACKEND = mitmproxy
 deps =
-    coverage
-    nose
-    selenium
-    mitmproxy
-commands = nosetests --with-coverage --cover-erase tests
-
-
+  -rrequirements.txt
+commands = pytest -vv --cov=seleniumwire tests