diff --git a/src/sp_repo_review/checks/pyproject.py b/src/sp_repo_review/checks/pyproject.py
index d7496887..607ebec5 100644
--- a/src/sp_repo_review/checks/pyproject.py
+++ b/src/sp_repo_review/checks/pyproject.py
@@ -89,7 +89,10 @@ def check(pyproject: dict[str, Any]) -> bool:
         ```
         """
         options = pyproject["tool"]["pytest"]["ini_options"]
-        return "minversion" in options and int(options["minversion"].split(".")[0]) >= 6
+        return (
+            "minversion" in options
+            and int(str(options["minversion"]).split(".")[0]) >= 6
+        )
 
 
 class PP303(PyProject):
diff --git a/tests/test_checks.py b/tests/test_checks.py
new file mode 100644
index 00000000..a03c6cfb
--- /dev/null
+++ b/tests/test_checks.py
@@ -0,0 +1,95 @@
+from sp_repo_review._compat import tomllib
+from sp_repo_review.checks import pyproject
+
+
+def test_PP002_okay():
+    toml = tomllib.loads("""
+        [build-system]
+        requires = ["setuptools"]
+        build-backend = "setuptools.build_meta"
+        """)
+    assert pyproject.PP002.check(toml)
+
+
+def test_PP002_not_list():
+    toml = tomllib.loads("""
+        [build-system]
+        requires = "setuptools"
+        build-backend = "setuptools.build_meta"
+        """)
+    assert not pyproject.PP002.check(toml)
+
+
+def test_PP002_missing():
+    toml = tomllib.loads("""
+        [project]
+        name = "hi"
+        version = "1.0.0"
+        """)
+    assert not pyproject.PP002.check(toml)
+
+
+def test_PP003_no_wheel():
+    toml = tomllib.loads("""
+        [build-system]
+        requires = ["setuptools"]
+        build-backend = "setuptools.build_meta"
+        """)
+    assert pyproject.PP003.check(toml)
+
+
+def test_PP003_has_wheel():
+    toml = tomllib.loads("""
+        [build-system]
+        requires = ["setuptools", "wheel"]
+        build-backend = "setuptools.build_meta"
+        """)
+    assert not pyproject.PP003.check(toml)
+
+
+def test_PP302_okay_intstr():
+    toml = tomllib.loads("""
+        [tool.pytest.ini_options]
+        minversion = "7"
+        """)
+    assert pyproject.PP302.check(toml)
+
+
+def test_PP302_okay_verstr():
+    toml = tomllib.loads("""
+        [tool.pytest.ini_options]
+        minversion = "7.0.2"
+        """)
+    assert pyproject.PP302.check(toml)
+
+
+def test_PP302_okay_rawint():
+    toml = tomllib.loads("""
+        [tool.pytest.ini_options]
+        minversion = 7
+        """)
+    assert pyproject.PP302.check(toml)
+
+
+def test_PP302_okay_rawfloat():
+    toml = tomllib.loads("""
+        [tool.pytest.ini_options]
+        minversion = 7.0
+        """)
+    assert pyproject.PP302.check(toml)
+
+
+def test_PP302_missing():
+    toml = tomllib.loads("""
+        [tool.pytest]
+        ini_options = {}
+        """)
+    assert not pyproject.PP302.check(toml)
+
+
+def test_PP302_too_low():
+    toml = tomllib.loads("""
+        [tool.pytest.ini_options]
+        minversion = "5"
+        """)
+    assert not pyproject.PP302.check(toml)