1 files changed, 24 insertions, 0 deletions
diff --git a/src/rwlock.rs b/src/rwlock.rs
index 70e1b1a..512114c 100644
--- a/src/rwlock.rs
+++ b/src/rwlock.rs
@@ -408,6 +408,8 @@ mod tests {
                 write_result.is_none(),
                 "try_write should fail while read_guard is in scope"
             );
+            assert!(lock.is_locked());
+            assert!(!lock.is_locked_exclusive());
 
             drop(read_guard);
         }
@@ -419,6 +421,8 @@ mod tests {
                 write_result.is_none(),
                 "try_write should fail while upgrade_guard is in scope"
             );
+            assert!(lock.is_locked());
+            assert!(!lock.is_locked_exclusive());
 
             drop(upgrade_guard);
         }
@@ -430,6 +434,8 @@ mod tests {
                 write_result.is_none(),
                 "try_write should fail while write_guard is in scope"
             );
+            assert!(lock.is_locked());
+            assert!(lock.is_locked_exclusive());
 
             drop(write_guard);
         }
@@ -615,4 +621,22 @@ mod tests {
         .join()
         .unwrap();
     }
+
+    #[test]
+    fn test_rw_write_is_locked() {
+        let lock = RwLock::new(0isize);
+        {
+            let _read_guard = lock.read();
+
+            assert!(lock.is_locked());
+            assert!(!lock.is_locked_exclusive());
+        }
+
+        {
+            let _write_guard = lock.write();
+
+            assert!(lock.is_locked());
+            assert!(lock.is_locked_exclusive());
+        }
+    }
 }