diff --git a/.woodpecker.yml b/.woodpecker.yml
index d6df94c..ba2f7e2 100644
--- a/.woodpecker.yml
+++ b/.woodpecker.yml
@@ -7,9 +7,9 @@ pipeline:
     group: test
     commands:
       - pip3 install -e .[test]
-      - python3 -m unittest coverage run --rcfile=setup.cfg -m unittest discover tlsrpt_exporter
-      - python3 -m unittest coverage combine
-      - python3 -m unittest coverage report --rcfile=setup.cfg
+      - python3 -m coverage run --rcfile=setup.cfg -m unittest discover tlsrpt_exporter
+      - python3 -m coverage combine
+      - python3 -m coverage report --rcfile=setup.cfg
 
   codestyle:
     image: python:3.11-bookworm
diff --git a/tlsrpt_exporter/__main__.py b/tlsrpt_exporter/__main__.py
index 5bf7ea9..187f60b 100644
--- a/tlsrpt_exporter/__main__.py
+++ b/tlsrpt_exporter/__main__.py
@@ -39,7 +39,8 @@ class Reporter(bottle.Bottle):
             prefix += f'{count_s},{count_f};'
         if domain is None:
             return
-        with open(os.path.join(self.datadir, 'reports', prefix[:-1] + '+' + domain + '+' + data['report-id']), 'w') as f:
+        fname = os.path.join(self.datadir, 'reports', prefix[:-1] + '+' + domain + '+' + data['report-id'])
+        with open(fname, 'w') as f:
             json.dump(data, f)
 
     def report(self):
@@ -47,7 +48,7 @@ class Reporter(bottle.Bottle):
         bottle.response.add_header('Accept', 'application/tlsrpt+json')
         if 'application/tlsrpt+gzip' in bottle.request.content_type:
             self.handle(self.decompress(bottle.request.body))
-        elif 'application/tlsrpt+json' in  bottle.request.content_type:
+        elif 'application/tlsrpt+json' in bottle.request.content_type:
             self.handle(json.load(bottle.request.body))
         else:
             bottle.response.status = 406
@@ -69,7 +70,7 @@ class Metrics(bottle.Bottle):
         self.count_f[domain] = self.count_f.setdefault(domain, 0) + count_f
         self.count[domain] = self.count.setdefault(domain, 0) + 1
 
-    def load_reports(self): 
+    def load_reports(self):
         for report in os.listdir(os.path.join(self.datadir, 'reports')):
             if report.startswith('.'):
                 continue
@@ -163,7 +164,8 @@ def main():
     ap.add_argument('--host', '-H', type=str, default='::', help='Address to bind to')
     ap.add_argument('--port', '-p', type=int, default=9123, help='Port to bind to')
     ap.add_argument('--base-url', '-B', type=str, default=None, help='Base URL')
-    ap.add_argument('--data-dir', '-d', type=str, default='/tmp/prometheus-tlsrpt-exporter', help='Directory to save reports to')
+    ap.add_argument('--data-dir', '-d', type=str,
+                    default='/tmp/prometheus-tlsrpt-exporter', help='Directory to save reports to')
     ap.add_argument('--template-dir', '-t', type=str, default='templates', help='Directory to load templates from')
     ns = ap.parse_args()
     os.makedirs(os.path.join(ns.data_dir, 'reports'), exist_ok=True)