diff --git a/__tests__/index.test.ts b/__tests__/index.test.ts
index d1eb5e2d..404296f5 100644
--- a/__tests__/index.test.ts
+++ b/__tests__/index.test.ts
@@ -124,7 +124,18 @@ describe('rehype-attr test case', () => {
       title: 'options="attr" - <ul> `- list`',
       markdown: '- list \n<!--rehype:style=width:100px;-->',
       expected: '<ul style="width:100px;">\n<li>list</li>\n</ul>\n<!--rehype:style=width:100px;-->',
-    }
+    },
+
+    {
+      title: 'options="attr" - test parameter value type ',
+      markdown: '#### This is a title\n<!--rehype:data-bool=true&data-bool2=false&data-num=213&data-num1=0213&data-str=2s13-->',
+      expected: '<h4 data-bool data-num="213" data-num1="0213" data-str="2s13">This is a title</h4>\n<!--rehype:data-bool=true&data-bool2=false&data-num=213&data-num1=0213&data-str=2s13-->',
+    },
+    {
+      title: 'options="attr" - test identifier',
+      markdown: '#### This is a title\n<!--wwww:data-bool=true',
+      expected: '<h4>This is a title</h4>\n',
+    },
   ].forEach((data, idx) => {
     it(data.title, async () => {
       const htmlStr = unified()
diff --git a/package.json b/package.json
index 1a0df556..fdd1c0d1 100644
--- a/package.json
+++ b/package.json
@@ -3,6 +3,7 @@
   "version": "1.1.6",
   "description": "New syntax to add attributes to Markdown.",
   "author": "Kenny Wong <wowohoo@qq.com>",
+  "license": "MIT",
   "main": "lib/index.js",
   "scripts": {
     "prepack": "npm run build",
@@ -31,7 +32,9 @@
     "ast",
     "unified"
   ],
-  "license": "MIT",
+  "jest": {
+    "collectCoverageFrom": ["lib/*.js", "!lib/*.d.ts"]
+  },
   "dependencies": {
     "ts-mdast": "1.0.0",
     "unified": "9.2.1"