added pytest-random-order for testing

Makefile

@@ -57,10 +57,10 @@ lint: ## reformat with black and check style with flake8
 	flake8 --ignore E231,W503,E402 sensospot_data tests
 
 test: ## run tests quickly with the default Python
-	pytest tests -x --disable-warnings
+	pytest tests -x --disable-warnings --random-order --failed-first
 
 coverage: ## full test suite, check code coverage and open coverage report
-	pytest tests --cov=sensospot_data
+	pytest tests --random-order --cov=sensospot_data
 	coverage html
 	$(BROWSER) htmlcov/index.html
 

pyproject.toml

@@ -35,6 +35,7 @@ test = [
     "pytest >=4.0.0",
     "pytest-cov",
     "pytest-mock",
+    "pytest-random-order >=1.0.0",
     "tox",
 ]
 dev = [