1 files changed, 90 insertions, 0 deletions
diff --git a/examples/bzlmod/test.py b/examples/bzlmod/test.py
new file mode 100644
index 0000000..80cd027
--- /dev/null
+++ b/examples/bzlmod/test.py
@@ -0,0 +1,90 @@
+# Copyright 2023 The Bazel Authors. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import os
+import pathlib
+import sys
+import unittest
+
+from lib import main
+
+
+class ExampleTest(unittest.TestCase):
+    def test_coverage_doesnt_shadow_stdlib(self):
+        # When we try to import the html module
+        import html as html_stdlib
+
+        try:
+            import coverage.html as html_coverage
+        except ImportError:
+            self.skipTest("not running under coverage, skipping")
+
+        self.assertEqual(
+            "html",
+            f"{html_stdlib.__name__}",
+            "'html' from stdlib was not loaded correctly",
+        )
+
+        self.assertEqual(
+            "coverage.html",
+            f"{html_coverage.__name__}",
+            "'coverage.html' was not loaded correctly",
+        )
+
+        self.assertNotEqual(
+            html_stdlib,
+            html_coverage,
+            "'html' import should not be shadowed by coverage",
+        )
+
+    def test_coverage_sys_path(self):
+        all_paths = ",\n    ".join(sys.path)
+
+        for i, path in enumerate(sys.path[1:-2]):
+            self.assertFalse(
+                "/coverage" in path,
+                f"Expected {i + 2}th '{path}' to not contain 'coverage.py' paths, "
+                f"sys.path has {len(sys.path)} items:\n    {all_paths}",
+            )
+
+        first_item, last_item = sys.path[0], sys.path[-1]
+        self.assertFalse(
+            first_item.endswith("coverage"),
+            f"Expected the first item in sys.path '{first_item}' to not be related to coverage",
+        )
+        if os.environ.get("COVERAGE_MANIFEST"):
+            # we are running under the 'bazel coverage :test'
+            self.assertTrue(
+                "_coverage" in last_item,
+                f"Expected {last_item} to be related to coverage",
+            )
+            self.assertEqual(pathlib.Path(last_item).name, "coverage")
+        else:
+            self.assertFalse(
+                "coverage" in last_item, f"Expected coverage tooling to not be present"
+            )
+
+    def test_main(self):
+        self.assertEquals(
+            """\
+-  -
+A  1
+B  2
+-  -""",
+            main([["A", 1], ["B", 2]]),
+        )
+
+
+if __name__ == "__main__":
+    unittest.main()