Fix tests and update a deprecated API

puppetboard/app.py

@@ -45,7 +45,7 @@
 running_as = os.path.basename(sys.argv[0])
 if not is_a_test():
     check_db_version(puppetdb)
-check_secret_key(app.config.get('SECRET_KEY'))
+    check_secret_key(app.config.get('SECRET_KEY'))
 
 logging.basicConfig(level=app.config['LOGLEVEL'].upper())
 log = logging.getLogger(__name__)

puppetboard/core.py

@@ -1,8 +1,8 @@
 import logging
 import re
 import socket
+from importlib.metadata import version
 
-import pkg_resources
 from flask import Flask
 from flask_caching import Cache
 from flask_apscheduler import APScheduler
@@ -70,7 +70,7 @@ def get_puppetdb():
                            timeout=app.config['PUPPETDB_TIMEOUT'],
                            protocol=app.config['PUPPETDB_PROTO'], )
 
-        requests_version = pkg_resources.get_distribution("requests").version
+        requests_version = version("requests")
         user_agent_header = {
             "user-agent": f"puppetboard/{own_version} (r/{requests_version})",
         }

test/test_form.py

@@ -1,9 +1,13 @@
-from puppetboard import app, forms
+from puppetboard import forms
+from puppetboard.core import get_app
+
+app = get_app()
+app.config['SECRET_KEY'] = 'the random string'
 
 
 def test_form_valid(capsys):
     for form in [forms.QueryForm]:
-        with app.app.test_request_context():
+        with app.test_request_context():
             qf = form()
             out, err = capsys.readouterr()
             assert qf is not None