1 files changed, 18 insertions, 0 deletions
diff --git a/vendor/syn/tests/debug/mod.rs b/vendor/syn/tests/debug/mod.rs
index 0a0991a92..caf9eed80 100644
--- a/vendor/syn/tests/debug/mod.rs
+++ b/vendor/syn/tests/debug/mod.rs
@@ -123,3 +123,21 @@ where
             .finish()
     }
 }
+
+struct Present;
+
+impl Debug for Present {
+    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
+        formatter.write_str("Some")
+    }
+}
+
+struct Option {
+    present: bool,
+}
+
+impl Debug for Option {
+    fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
+        formatter.write_str(if self.present { "Some" } else { "None" })
+    }
+}