diff --git a/.coveragerc b/.coveragerc
new file mode 100644
index 0000000..7aab2e5
--- /dev/null
+++ b/.coveragerc
@@ -0,0 +1,3 @@
+[run]
+source = fixedcal
+omit = fixedcal/**/__init__.py
diff --git a/.gitignore b/.gitignore
index 2fc548e..4bd9ce8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,13 @@
+# python
 __pycache__/
 index.py
-.DS_Store
\ No newline at end of file
+
+# pytest
+.pytest_cache/
+
+# coverage
+.coverage
+htmlcov/
+
+# macOS
+.DS_Store