1 files changed, 20 insertions, 0 deletions
diff --git a/library/std/src/env/tests.rs b/library/std/src/env/tests.rs
index 94cace03af6..55869229581 100644
--- a/library/std/src/env/tests.rs
+++ b/library/std/src/env/tests.rs
@@ -95,8 +95,28 @@ fn args_debug() {
         format!("Args {{ inner: {:?} }}", args().collect::<Vec<_>>()),
         format!("{:?}", args())
     );
+}
+
+#[test]
+fn args_os_debug() {
     assert_eq!(
         format!("ArgsOs {{ inner: {:?} }}", args_os().collect::<Vec<_>>()),
         format!("{:?}", args_os())
     );
 }
+
+#[test]
+fn vars_debug() {
+    assert_eq!(
+        format!("Vars {{ inner: {:?} }}", vars().collect::<Vec<_>>()),
+        format!("{:?}", vars())
+    );
+}
+
+#[test]
+fn vars_os_debug() {
+    assert_eq!(
+        format!("VarsOs {{ inner: {:?} }}", vars_os().collect::<Vec<_>>()),
+        format!("{:?}", vars_os())
+    );
+}