Add ignore list for coverage (pytest), rename json default function to default_isoformat

pyproject.toml

@@ -67,3 +67,26 @@ init-hook='import sys; sys.path.append("src/")'
 testpaths = [
     "tests",
 ]
+
+
+[tool.coverage.run]
+omit = [
+    "*/tests/*",
+    "*/test_*.py",
+    "*/__init__.py"
+]
+
+[tool.coverage.report]
+exclude_lines = [
+    "pragma: no cover",
+    "def __repr__",
+    "def __str__",
+    "raise AssertionError",
+    "raise NotImplementedError",
+    "if __name__ == .__main__.:"
+]
+exclude_also = [
+    "def __.*__\\(",
+    "def __.*\\(",
+    "def _.*\\(",
+]