Set "required" schema attribute

schemars/tests/expected/property-name-struct.json

@@ -12,5 +12,10 @@
     "new_name_2": {
       "type": "integer"
     }
-  }
+  },
+  "required": [
+    "camelCase",
+    "new_name_1",
+    "new_name_2"
+  ]
 }

schemars/tests/expected/schema-name-custom.json

@@ -22,6 +22,13 @@
       }
     }
   },
+  "required": [
+    "inner",
+    "t",
+    "u",
+    "v",
+    "w"
+  ],
   "definitions": {
     "another-new-name": {
       "type": "object"

schemars/tests/expected/schema-name-default.json

@@ -22,6 +22,13 @@
       }
     }
   },
+  "required": [
+    "inner",
+    "t",
+    "u",
+    "v",
+    "w"
+  ],
   "definitions": {
     "MySimpleStruct": {
       "type": "object"

schemars/tests/expected/schema-openapi3.json

@@ -151,7 +151,10 @@
         "$ref": {
           "type": "string"
         }
-      }
+      },
+      "required": [
+        "$ref"
+      ]
     },
     "SingleOrVec_For_InstanceType": {
       "anyOf": [

schemars/tests/expected/schema.json

@@ -187,7 +187,10 @@
         "$ref": {
           "type": "string"
         }
-      }
+      },
+      "required": [
+        "$ref"
+      ]
     },
     "SingleOrVec_For_InstanceType": {
       "anyOf": [