Better branch-missed messages for lambdas.

1 files changed, 14 insertions, 0 deletions

diff --git a/tests/test_parser.py b/tests/test_parser.py
index 0ede10b4..17f81ad8 100644
--- a/tests/test_parser.py
+++ b/tests/test_parser.py
@@ -329,6 +329,20 @@ class ParserMissingArcDescriptionTest(CoverageTest):
                 "because the return on line 12 wasn't executed"
         )
 
+    def test_missing_arc_descriptions_bug460(self):
+        parser = self.parse_text(u"""\
+            x = 1
+            d = {
+                3: lambda: [],
+                4: lambda: [],
+            }
+            x = 6
+            """)
+        self.assertEqual(
+            parser.missing_arc_description(2, -3),
+            "line 3 didn't run the lambda on line 3",
+        )
+
 
 class ParserFileTest(CoverageTest):
     """Tests for coverage.py's code parsing from files."""