Enable doctests by default (#12)

Author: lagru

pyproject.toml

@@ -59,7 +59,7 @@ write_to = "src/docstub/_version.py"
 
 
 [tool.ruff]
-src = ["src"]
+src = ["src", "tests"]
 
 [tool.ruff.lint]
 extend-select = [
@@ -90,6 +90,14 @@ ignore = [
 ]
 
 
+[tool.pytest.ini_options]
+addopts = "--doctest-modules"
+testpaths = [
+    "src",
+    "tests",
+]
+
+
 [tool.coverage]
 run.source = ["docstub"]