1 files changed, 9 insertions, 0 deletions
diff --git a/tests/test_html.py b/tests/test_html.py
index 89ad8d1c..65f0cc76 100644
--- a/tests/test_html.py
+++ b/tests/test_html.py
@@ -1260,3 +1260,12 @@ class HtmlHelpersTest(HtmlTestHelpers, CoverageTest):
         msg = "Fragment '#nothing' in htmlcov.index.html has no anchor"
         with pytest.raises(AssertionError, match=msg):
             self.assert_valid_hrefs()
+
+
+@pytest.mark.parametrize("n, key", [
+    (0, "a"),
+    (1, "b"),
+    (999999999, "e9S_p"),
+])
+def test_encode_int(n: int, key: str) -> None:
+    assert coverage.html.encode_int(n) == key