Add the fixpaths.py script for fixing the combined coverage report paths

Dockerfile.debian

@@ -8,3 +8,5 @@ RUN apt-get update && DEBIAN_FRONTEND=noninteractive \
                        python3-websockets python3-webob python3-waitress python3-requests python3-pymediainfo \
                        python3-qtawesome python3-opengl python3-appdirs python3-vlc python3-zeroconf python3-pip \
                        python3-flake8 flake8 mediainfo mupdf-tools xvfb
+ADD fixpaths.py /usr/bin/fixpaths
+RUN chmod a+x /usr/bin/fixpaths

fixpaths.py

@@ -0,0 +1,29 @@
+#!/usr/bin/env python3
+import os
+from argparse import ArgumentParser
+
+from coverage import CoverageData
+
+
+def get_args():
+    parser = ArgumentParser()
+    parser.add_argument('coveragefile', metavar='FILENAME', help='Path to the .coverage file')
+    return parser.parse_args()
+
+
+def fix_paths(coverage_file):
+    file_name = os.path.abspath(coverage_file)
+    base_path = os.path.dirname(file_name)
+    data = CoverageData()
+    data.read_file(file_name)
+    new_lines = {}
+    for fname, report in data._lines.items():
+        new_fname = os.path.join(base_path, fname.split('openlp/openlp/')[-1])
+        new_lines[new_fname] = report
+    data._lines = new_lines
+    data.write_file(file_name)
+
+
+if __name__ == '__main__':
+    args = get_args()
+    fix_paths(args.coveragefile)