diff --git a/.coveragerc b/.coveragerc
new file mode 100644
index 0000000..73d8e64
--- /dev/null
+++ b/.coveragerc
@@ -0,0 +1,10 @@
+[run]
+omit =
+    */migrations/*
+    */admin.py
+    */tests/*
+    */urls.py
+    */apps.py
+    la_chariotte/settings.py
+    la_chariotte/asgi.py
+    la_chariotte/wsgi.py
diff --git a/la_chariotte/settings.py b/la_chariotte/settings.py
index 9de6adb..159b46b 100644
--- a/la_chariotte/settings.py
+++ b/la_chariotte/settings.py
@@ -9,7 +9,7 @@ https://docs.djangoproject.com/en/4.1/topics/settings/
 For the full list of settings and their values, see
 https://docs.djangoproject.com/en/4.1/ref/settings/
 """
-
+import os
 from pathlib import Path
 
 # Build paths inside the project like this: BASE_DIR / 'subdir'.
@@ -77,14 +77,18 @@ WSGI_APPLICATION = "la_chariotte.wsgi.application"
 DATABASES = {
     "default": {
         "ENGINE": "django.db.backends.postgresql",
-        "NAME": "chariotte-db",
-        "USER": "laetitia",
-        "PASSWORD": "toto",
-        "HOST": "127.0.0.1",
-        "PORT": "5432",
+        "NAME": os.getenv("DB_NAME", "chariotte-db"),
     }
 }
 
+if os.getenv("DB_USER"):
+    DATABASES["default"]["USER"] = os.getenv("DB_USER")
+if os.getenv("DB_PASSWORD"):
+    DATABASES["default"]["PASSWORD"] = os.getenv("DB_PASSWORD")
+if os.getenv("DB_HOST"):
+    DATABASES["default"]["HOST"] = os.getenv("DB_HOST")
+if os.getenv("DB_PORT"):
+    DATABASES["default"]["PORT"] = os.getenv("DB_PORT")
 
 # Password validation
 # https://docs.djangoproject.com/en/4.1/ref/settings/#auth-password-validators
diff --git a/pyproject.toml b/pyproject.toml
index 51ef109..37f8bb5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,6 +4,7 @@ version = "0.0.1"
 description = "Web application for organising grouped orders"
 readme = "readMe.md"
 license = {file = "LICENSE"}
+authors = [{name = "Hashbang", email = "support@hashbang.fr"}]
 dependencies = [
     "django>=4,<5",
     "psycopg2>=2,<3",
@@ -22,11 +23,14 @@ dev = [
     "pip-tools>=6,<7",
     "pytest-isort>=3,<4",
     "pytest-django>=4,<5",
+    "pytest-cov>=4,<5",
+    "diff-cover>=4,<5",
+    "pytest-black<1",
 ]
 
 [tool.pytest.ini_options]
 DJANGO_SETTINGS_MODULE = "la_chariotte.settings"
-addopts = "--isort"
+addopts = "--isort --black --reuse-db --cov-report xml --cov-report term-missing --cov=la_chariotte -p no:warnings"
 isort_ignore = ["*migrations/*.py"]
 
 [tool.isort]
diff --git a/readMe.md b/readMe.md
index 7d49e43..b0e366f 100644
--- a/readMe.md
+++ b/readMe.md
@@ -15,13 +15,17 @@ Si il y a des erreurs ISORT, on peut lancer isort pour trier les fichiers :
 isort .
 ```
 
-Vérifier le formatage des fichers avec flake8 :
+Si il y a des erreurs BLACK, on peut lancer black pour linter le code :
+```bash
+black .
+```
 
+Vérifier le formatage des fichers avec flake8 :
 ```bash
 flake8
 ```
 
-Si l'erreur `BLK100 Blakck would make changes.` apparait, on peut lancer black pour formater les fichiers : 
+Si l'erreur `BLK100 Black would make changes.` apparait, on peut lancer black pour formater les fichiers : 
 
 ```bash
 black .