diff --git a/tests/draft3/maxLength.json b/tests/draft3/maxLength.json
index 561767b9..e9318ce8 100644
--- a/tests/draft3/maxLength.json
+++ b/tests/draft3/maxLength.json
@@ -22,6 +22,11 @@
                 "description": "ignores non-strings",
                 "data": 10,
                 "valid": true
+            },
+            {
+                "description": "two supplementary Unicode code points (here, U+1F4A9) is long enough",
+                "data": "\uD83D\uDCA9\uD83D\uDCA9",
+                "valid": true
             }
         ]
     }
diff --git a/tests/draft3/minLength.json b/tests/draft3/minLength.json
index e9c14b17..d7d00a72 100644
--- a/tests/draft3/minLength.json
+++ b/tests/draft3/minLength.json
@@ -22,6 +22,11 @@
                 "description": "ignores non-strings",
                 "data": 1,
                 "valid": true
+            },
+            {
+                "description": "one supplementary Unicode code point (here, U+1F4A9) is not long enough",
+                "data": "\uD83D\uDCA9",
+                "valid": false
             }
         ]
     }
diff --git a/tests/draft4/maxLength.json b/tests/draft4/maxLength.json
index 561767b9..e9318ce8 100644
--- a/tests/draft4/maxLength.json
+++ b/tests/draft4/maxLength.json
@@ -22,6 +22,11 @@
                 "description": "ignores non-strings",
                 "data": 10,
                 "valid": true
+            },
+            {
+                "description": "two supplementary Unicode code points (here, U+1F4A9) is long enough",
+                "data": "\uD83D\uDCA9\uD83D\uDCA9",
+                "valid": true
             }
         ]
     }
diff --git a/tests/draft4/minLength.json b/tests/draft4/minLength.json
index e9c14b17..d7d00a72 100644
--- a/tests/draft4/minLength.json
+++ b/tests/draft4/minLength.json
@@ -22,6 +22,11 @@
                 "description": "ignores non-strings",
                 "data": 1,
                 "valid": true
+            },
+            {
+                "description": "one supplementary Unicode code point (here, U+1F4A9) is not long enough",
+                "data": "\uD83D\uDCA9",
+                "valid": false
             }
         ]
     }