Add coverage dev dependency, with basic config

pdm.lock

@@ -5,7 +5,7 @@
 groups = ["default", "debug", "dev", "lint", "server", "typing"]
 strategy = ["inherit_metadata"]
 lock_version = "4.5.0"
-content_hash = "sha256:2352a5fdfb84e6efba254f0874182ba0b5ff2522a6d6384d3610c2c18671008f"
+content_hash = "sha256:dbe70451d086ebf518de5d1f9a63890bb21dc3faf31d268a73e173bd84d77112"
 
 [[metadata.targets]]
 requires_python = "==3.11.*"
@@ -267,6 +267,18 @@ files = [
     {file = "colorama-0.4.6.tar.gz", hash = "sha256:08695f5cb7ed6e0531a20572697297273c47b8cae5a63ffc6d6ed5c201be6e44"},
 ]
 
+[[package]]
+name = "coverage"
+version = "7.6.1"
+requires_python = ">=3.8"
+summary = "Code coverage measurement for Python"
+groups = ["dev"]
+marker = "python_version == \"3.11\""
+files = [
+    {file = "coverage-7.6.1-cp311-cp311-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:0c0420b573964c760df9e9e86d1a9a622d0d27f417e1a949a8a66dd7bcee7bc6"},
+    {file = "coverage-7.6.1.tar.gz", hash = "sha256:953510dfb7b12ab69d20135a0662397f077c59b1e6379a768e97c59d852ee51d"},
+]
+
 [[package]]
 name = "cssbeautifier"
 version = "1.15.1"

pyproject.toml

@@ -132,6 +132,20 @@ plugins = [
 django_settings_module = "cmsmanage.settings"
 strict_settings = false
 
+[tool.coverage.run]
+source = [
+  "cmsmanage",
+  "dashboard",
+  "doorcontrol",
+  "membershipworks",
+  "paperwork",
+  "rentals",
+  "reservations",
+]
+omit = [
+  "*/migrations/*",
+]
+
 [[tool.pdm.source]]
 url = "https://pypi.org/simple"
 verify_ssl = true
@@ -171,6 +185,7 @@ dev = [
     "ipython~=8.27",
     "hypothesis[django]~=6.111",
     "tblib~=3.0",
+    "coverage~=7.6",
 ]
 
 [tool.pdm.scripts]