diff --git a/CHANGES.rst b/CHANGES.rst
index b8fe39d1..1d4133d3 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -6,6 +6,7 @@ WIP
 ===
 
 - Added ``GappedCircleModuleDrawer`` (PIL) to render QR code modules as non-contiguous circles. (BenwestGate in `#373`_)
+- Improved test coveraged (akx in `#315`_)
 - Migrate pyproject.toml to PEP 621-compliant [project] metadata format. (hroncok in `#399`_)
 - Allow execution as a Python module. (stefansjs in `#400`_)
 
@@ -13,6 +14,7 @@ WIP
 
     python -m qrcode --output qrcode.png "hello world"
 
+.. _#315: https://github.com/lincolnloop/python-qrcode/pull/315
 .. _#373: https://github.com/lincolnloop/python-qrcode/pull/373
 .. _#399: https://github.com/lincolnloop/python-qrcode/pull/399
 .. _#400: https://github.com/lincolnloop/python-qrcode/pull/400
diff --git a/pyproject.toml b/pyproject.toml
index 349d8a28..07236f1d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -80,3 +80,17 @@ date-format =" %%-d %%B %%Y"
 prereleaser.middle = [
     "qrcode.release.update_manpage"
 ]
+
+[tool.coverage.run]
+source = ["qrcode"]
+parallel = true
+
+[tool.coverage.report]
+exclude_lines = [
+    "@abc.abstractmethod",
+    "@overload",
+    "if (typing\\.)?TYPE_CHECKING:",
+    "pragma: no cover",
+    "raise NotImplementedError"
+]
+skip_covered = true
diff --git a/qrcode/image/styledpil.py b/qrcode/image/styledpil.py
index 62cb0781..e84919d9 100644
--- a/qrcode/image/styledpil.py
+++ b/qrcode/image/styledpil.py
@@ -122,8 +122,7 @@ def draw_embedded_image(self):
     def save(self, stream, format=None, **kwargs):
         if format is None:
             format = kwargs.get("kind", self.kind)
-        if "kind" in kwargs:
-            del kwargs["kind"]
+        kwargs.pop("kind", None)
         self._img.save(stream, format=format, **kwargs)
 
     def __getattr__(self, name):
diff --git a/qrcode/image/styles/moduledrawers/__init__.py b/qrcode/image/styles/moduledrawers/__init__.py
index bf0df8a3..ae8b22af 100644
--- a/qrcode/image/styles/moduledrawers/__init__.py
+++ b/qrcode/image/styles/moduledrawers/__init__.py
@@ -1,11 +1,11 @@
 # For backwards compatibility, importing the PIL drawers here.
 try:
     from .pil import CircleModuleDrawer  # noqa: F401
-    from .pil import GappedCircleModuleDrawer # noqa: F401
+    from .pil import GappedCircleModuleDrawer  # noqa: F401
     from .pil import GappedSquareModuleDrawer  # noqa: F401
     from .pil import HorizontalBarsDrawer  # noqa: F401
     from .pil import RoundedModuleDrawer  # noqa: F401
     from .pil import SquareModuleDrawer  # noqa: F401
     from .pil import VerticalBarsDrawer  # noqa: F401
-except ImportError:
+except ImportError:  # pragma: no cover
     pass
diff --git a/qrcode/image/styles/moduledrawers/pil.py b/qrcode/image/styles/moduledrawers/pil.py
index 107cf854..cd3ef83c 100644
--- a/qrcode/image/styles/moduledrawers/pil.py
+++ b/qrcode/image/styles/moduledrawers/pil.py
@@ -117,7 +117,9 @@ def initialize(self, *args, **kwargs):
             (0, 0, fake_size, fake_size), fill=self.img.paint_color
         )
         smaller_size = int(self.size_ratio * box_size)
-        self.circle = self.circle.resize((smaller_size, smaller_size), Image.Resampling.LANCZOS)
+        self.circle = self.circle.resize(
+            (smaller_size, smaller_size), Image.Resampling.LANCZOS
+        )
 
     def drawrect(self, box, is_active: bool):
         if is_active: