diff --git a/.gitignore b/.gitignore
index faa338e..6230f65 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,6 +9,7 @@ coverage
 # local env files
 .env.local
 .env.*.local
+codecov.yml
 
 # Log files
 npm-debug.log*
diff --git a/README.md b/README.md
index d6e6674..43569e4 100644
--- a/README.md
+++ b/README.md
@@ -9,6 +9,9 @@ This is an element-Puls table component that can be configured to perform comple
     <img alt="GitHub issues" src="https://img.shields.io/github/issues/notbucai/cding-table">
     <img alt="GitHub" src="https://img.shields.io/github/license/notbucai/cding-table">
     <img alt="GitHub package.json version" src="https://img.shields.io/github/package-json/v/notbucai/cding-table">
+    <a href="https://codecov.io/gh/notbucai/cding-table">
+      <img src="https://codecov.io/gh/notbucai/cding-table/branch/main/graph/badge.svg?token=CIOEV3QL1G"/>
+    </a>
 </p>
 
 <!-- ![./website/assets/images/home-pic.png](./website/assets/images/home-pic.png) -->
diff --git a/package.json b/package.json
index 47a661b..3d92fc1 100644
--- a/package.json
+++ b/package.json
@@ -32,7 +32,7 @@
     "*.vue"
   ],
   "scripts": {
-    "test": "jest --coverage",
+    "test": "jest --coverage && codecov",
     "dev": "rollup --config ./build/rollup.config.js --watch --sourcemap",
     "build": "cross-env NODE_ENV=production rollup --config ./build/rollup.config.js --sourcemap",
     "website:dev": "webpack server --profile --config ./website/webpack.config.js",
@@ -61,12 +61,13 @@
     "@vue/babel-plugin-jsx": "^1.1.1",
     "@vue/cli-plugin-babel": "^4.5.13",
     "@vue/compiler-sfc": "^3.2.22",
-    "@vue/test-utils": "^2.0.0-rc.12",
+    "@vue/test-utils": "^2.0.0-rc.17",
     "babel-loader": "^8.2.2",
     "babel-plugin-import": "^1.13.3",
     "babel-plugin-lodash": "^3.3.4",
     "babel-plugin-module-resolver": "^4.1.0",
     "clipboard-copy": "^4.0.1",
+    "codecov": "^3.8.3",
     "colors": "^1.4.0",
     "cross-env": "^7.0.3",
     "crypto-browserify": "^3.12.0",
@@ -135,4 +136,4 @@
     "element-plus": "^1.2.0-beta.3",
     "vue": "^3.2.22"
   }
-}
\ No newline at end of file
+}
diff --git a/src/__test__/index.spec.tsx b/src/__test__/index.spec.tsx
index 4cd58b3..71fe0f1 100644
--- a/src/__test__/index.spec.tsx
+++ b/src/__test__/index.spec.tsx
@@ -5,9 +5,17 @@ import { ElButton } from 'element-plus'
 import TableData from '../components/table-data.vue'
 import flushPromises from 'flush-promises'
 
+window.ResizeObserver =
+window.ResizeObserver ||
+jest.fn().mockImplementation(() => ({
+    disconnect: jest.fn(),
+    observe: jest.fn(),
+    unobserve: jest.fn(),
+}));
+
 const mount = (opt: any) =>
   _mount<any>(opt, {
-    attachTo: 'body',
+    // attachTo: 'body',
   })
 
 function getTestData () {
@@ -51,6 +59,7 @@ function getTestData () {
 }
 
 describe('Table.vue', () => {
+
   describe('rendering data is correct', () => {
     const wrapper = mount({
       components: {
@@ -127,7 +136,6 @@ describe('Table.vue', () => {
     const wrapper = mount({
       components: {
         TableData,
-        ElButton,
       },
       template: `
       <template>
diff --git a/yarn.lock b/yarn.lock
index a1a9367..32f7226 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1838,10 +1838,10 @@
   resolved "https://registry.yarnpkg.com/@vue/shared/-/shared-3.2.22.tgz#26dcbe5e530f6c1f2de5ca9aeab92ab00f523b41"
   integrity sha512-qWVav014mpjEtbWbEgl0q9pEyrrIySKum8UVYjwhC6njrKzknLZPvfuYdQyVbApsqr94tf/3dP4pCuZmmjdCWQ==
 
-"@vue/test-utils@^2.0.0-rc.12":
-  version "2.0.0-rc.16"
-  resolved "https://registry.yarnpkg.com/@vue/test-utils/-/test-utils-2.0.0-rc.16.tgz#59380f02870f856ac002a29c02681d3f3fcbafeb"
-  integrity sha512-TubikDVkI2LuRKRPSLv3lYpbpvvucT2DIcGqfBVpvYs4W19u0EBTJEdmfwmSuLY7H1TyAr9Stur3PI1sWWvTGQ==
+"@vue/test-utils@^2.0.0-rc.17":
+  version "2.0.0-rc.17"
+  resolved "https://registry.yarnpkg.com/@vue/test-utils/-/test-utils-2.0.0-rc.17.tgz#e6dcf5b5bd3ae23595bdb154b9b578ebcdffd698"
+  integrity sha512-7LHZKsFRV/HqDoMVY+cJamFzgHgsrmQFalROHC5FMWrzPzd+utG5e11krj1tVsnxYufGA2ABShX4nlcHXED+zQ==
 
 "@vueuse/core@^6.7.3":
   version "6.9.2"
@@ -2360,6 +2360,11 @@ argparse@^2.0.1:
   resolved "https://registry.yarnpkg.com/argparse/-/argparse-2.0.1.tgz#246f50f3ca78a3240f6c997e8a9bd1eac49e4b38"
   integrity sha512-8+9WqebbFzpX9OR+Wa6O29asIogeRMzcGtAINdpMHHyAg10f05aSFVBbcEqGf/PXw1EjAZ+q2/bEBg3DvurK3Q==
 
+argv@0.0.2:
+  version "0.0.2"
+  resolved "https://registry.yarnpkg.com/argv/-/argv-0.0.2.tgz#ecbd16f8949b157183711b1bda334f37840185ab"
+  integrity sha1-7L0W+JSbFXGDcRsb2jNPN4QBhas=
+
 arr-diff@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/arr-diff/-/arr-diff-4.0.0.tgz#d6461074febfec71e7e15235761a329a5dc7c520"
@@ -3219,6 +3224,17 @@ co@^4.6.0:
   resolved "https://registry.yarnpkg.com/co/-/co-4.6.0.tgz#6ea6bdf3d853ae54ccb8e47bfa0bf3f9031fb184"
   integrity sha1-bqa989hTrlTMuOR7+gvz+QMfsYQ=
 
+codecov@^3.8.3:
+  version "3.8.3"
+  resolved "https://registry.yarnpkg.com/codecov/-/codecov-3.8.3.tgz#9c3e364b8a700c597346ae98418d09880a3fdbe7"
+  integrity sha512-Y8Hw+V3HgR7V71xWH2vQ9lyS358CbGCldWlJFR0JirqoGtOoas3R3/OclRTvgUYFK29mmJICDPauVKmpqbwhOA==
+  dependencies:
+    argv "0.0.2"
+    ignore-walk "3.0.4"
+    js-yaml "3.14.1"
+    teeny-request "7.1.1"
+    urlgrey "1.0.0"
+
 collect-v8-coverage@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/collect-v8-coverage/-/collect-v8-coverage-1.0.1.tgz#cc2c8e94fc18bbdffe64d6534570c8a673b27f59"
@@ -4561,6 +4577,13 @@ fast-levenshtein@~2.0.6:
   resolved "https://registry.yarnpkg.com/fast-levenshtein/-/fast-levenshtein-2.0.6.tgz#3d8a5c66883a16a30ca8643e851f19baa7797917"
   integrity sha1-PYpcZog6FqMMqGQ+hR8Zuqd5eRc=
 
+fast-url-parser@^1.1.3:
+  version "1.1.3"
+  resolved "https://registry.yarnpkg.com/fast-url-parser/-/fast-url-parser-1.1.3.tgz#f4af3ea9f34d8a271cf58ad2b3759f431f0b318d"
+  integrity sha1-9K8+qfNNiicc9YrSs3WfQx8LMY0=
+  dependencies:
+    punycode "^1.3.2"
+
 fastest-levenshtein@^1.0.12:
   version "1.0.12"
   resolved "https://registry.yarnpkg.com/fastest-levenshtein/-/fastest-levenshtein-1.0.12.tgz#9990f7d3a88cc5a9ffd1f1745745251700d497e2"
@@ -5219,7 +5242,7 @@ http-parser-js@>=0.5.1:
   resolved "https://registry.yarnpkg.com/http-parser-js/-/http-parser-js-0.5.3.tgz#01d2709c79d41698bb01d4decc5e9da4e4a033d9"
   integrity sha512-t7hjvef/5HEK7RWTdUzVUhl8zkEu+LlaE0IYzdMuvbSDipxBRpOn4Uhw8ZyECEa808iVT8XCjzo6xmYt4CiLZg==
 
-http-proxy-agent@^4.0.1:
+http-proxy-agent@^4.0.0, http-proxy-agent@^4.0.1:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/http-proxy-agent/-/http-proxy-agent-4.0.1.tgz#8a8c8ef7f5932ccf953c296ca8291b95aa74aa3a"
   integrity sha512-k0zdNgqWTGA6aeIRVpvfVob4fL52dTfaehylg0Y4UvSySvOq/Y+BOyPrgpUrA7HylqvU8vIZGsRuXmspskV0Tg==
@@ -5311,6 +5334,13 @@ iferr@^0.1.5:
   resolved "https://registry.yarnpkg.com/iferr/-/iferr-0.1.5.tgz#c60eed69e6d8fdb6b3104a1fcbca1c192dc5b501"
   integrity sha1-xg7taebY/bazEEofy8ocGS3FtQE=
 
+ignore-walk@3.0.4:
+  version "3.0.4"
+  resolved "https://registry.yarnpkg.com/ignore-walk/-/ignore-walk-3.0.4.tgz#c9a09f69b7c7b479a5d74ac1a3c0d4236d2a6335"
+  integrity sha512-PY6Ii8o1jMRA1z4F2hRkH/xN59ox43DavKvD3oDpfurRlOJyAHpifIwpbdv1n4jt4ov0jSpw3kQ4GhJnpBL6WQ==
+  dependencies:
+    minimatch "^3.0.4"
+
 ignore@^4.0.6:
   version "4.0.6"
   resolved "https://registry.yarnpkg.com/ignore/-/ignore-4.0.6.tgz#750e3db5862087b4737ebac8207ffd1ef27b25fc"
@@ -6245,7 +6275,7 @@ js-tokens@^4.0.0:
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-4.0.0.tgz#19203fb59991df98e3a287050d4647cdeaf32499"
   integrity sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ==
 
-js-yaml@^3.13.1:
+js-yaml@3.14.1, js-yaml@^3.13.1:
   version "3.14.1"
   resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.14.1.tgz#dae812fdb3825fa306609a8717383c50c36a0537"
   integrity sha512-okMH7OXXJ7YrN9Ok3/SXrnu4iX9yOk+25nqX4imS2npuvTYDmo/QEZoqwZkYaIDk3jVvBOTOIEgEhaLOynBS9g==
@@ -6969,6 +6999,13 @@ no-case@^3.0.4:
     lower-case "^2.0.2"
     tslib "^2.0.3"
 
+node-fetch@^2.6.1:
+  version "2.6.6"
+  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.6.6.tgz#1751a7c01834e8e1697758732e9efb6eeadfaf89"
+  integrity sha512-Z8/6vRlTUChSdIgMa51jxQ4lrw/Jy5SOW10ObaA47/RElsAN2c5Pn8bTgFGWn/ibwzXTE8qwr1Yzx28vsecXEA==
+  dependencies:
+    whatwg-url "^5.0.0"
+
 node-forge@^0.10.0:
   version "0.10.0"
   resolved "https://registry.yarnpkg.com/node-forge/-/node-forge-0.10.0.tgz#32dea2afb3e9926f02ee5ce8794902691a676bf3"
@@ -7975,7 +8012,7 @@ punycode@1.3.2:
   resolved "https://registry.yarnpkg.com/punycode/-/punycode-1.3.2.tgz#9653a036fb7c1ee42342f2325cceefea3926c48d"
   integrity sha1-llOgNvt8HuQjQvIyXM7v6jkmxI0=
 
-punycode@^1.2.4:
+punycode@^1.2.4, punycode@^1.3.2:
   version "1.4.1"
   resolved "https://registry.yarnpkg.com/punycode/-/punycode-1.4.1.tgz#c0d5a63b2718800ad8e1eb0fa5269c84dd41845e"
   integrity sha1-wNWmOycYgArY4esPpSachN1BhF4=
@@ -9088,6 +9125,13 @@ stream-each@^1.1.0:
     end-of-stream "^1.1.0"
     stream-shift "^1.0.0"
 
+stream-events@^1.0.5:
+  version "1.0.5"
+  resolved "https://registry.yarnpkg.com/stream-events/-/stream-events-1.0.5.tgz#bbc898ec4df33a4902d892333d47da9bf1c406d5"
+  integrity sha512-E1GUzBSgvct8Jsb3v2X15pjzN1tYebtbLaMg+eBOUOAxgbLoSbT2NS91ckc5lJD1KfLjId+jXJRgo0qnV5Nerg==
+  dependencies:
+    stubs "^3.0.0"
+
 stream-http@^2.7.2:
   version "2.8.3"
   resolved "https://registry.yarnpkg.com/stream-http/-/stream-http-2.8.3.tgz#b2d242469288a5a27ec4fe8933acf623de6514fc"
@@ -9200,6 +9244,11 @@ strip-json-comments@^3.0.1:
   resolved "https://registry.yarnpkg.com/strip-json-comments/-/strip-json-comments-3.1.1.tgz#31f1281b3832630434831c310c01cccda8cbe006"
   integrity sha512-6fPc+R4ihwqP6N/aIv2f1gMH8lOVtWQHoqC4yK6oSDVVocumAsfCqjkXnqiYMhmMwS/mEHLp7Vehlt3ql6lEig==
 
+stubs@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/stubs/-/stubs-3.0.0.tgz#e8d2ba1fa9c90570303c030b6900f7d5f89abe5b"
+  integrity sha1-6NK6H6nJBXAwPAMLaQD31fiavls=
+
 style-inject@^0.3.0:
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/style-inject/-/style-inject-0.3.0.tgz#d21c477affec91811cc82355832a700d22bf8dd3"
@@ -9297,6 +9346,17 @@ tapable@^2.0.0, tapable@^2.1.1, tapable@^2.2.0:
   resolved "https://registry.yarnpkg.com/tapable/-/tapable-2.2.1.tgz#1967a73ef4060a82f12ab96af86d52fdb76eeca0"
   integrity sha512-GNzQvQTOIP6RyTfE2Qxb8ZVlNmw0n88vp1szwWRimP02mnTsx3Wtn5qRdqY9w2XduFNUgvOwhNnQsjwCp+kqaQ==
 
+teeny-request@7.1.1:
+  version "7.1.1"
+  resolved "https://registry.yarnpkg.com/teeny-request/-/teeny-request-7.1.1.tgz#2b0d156f4a8ad81de44303302ba8d7f1f05e20e6"
+  integrity sha512-iwY6rkW5DDGq8hE2YgNQlKbptYpY5Nn2xecjQiNjOXWbKzPGUfmeUBCSQbbr306d7Z7U2N0TPl+/SwYRfua1Dg==
+  dependencies:
+    http-proxy-agent "^4.0.0"
+    https-proxy-agent "^5.0.0"
+    node-fetch "^2.6.1"
+    stream-events "^1.0.5"
+    uuid "^8.0.0"
+
 terminal-link@^2.0.0:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/terminal-link/-/terminal-link-2.1.1.tgz#14a64a27ab3c0df933ea546fba55f2d078edc994"
@@ -9506,6 +9566,11 @@ tr46@^2.1.0:
   dependencies:
     punycode "^2.1.1"
 
+tr46@~0.0.3:
+  version "0.0.3"
+  resolved "https://registry.yarnpkg.com/tr46/-/tr46-0.0.3.tgz#8184fd347dac9cdc185992f3a6622e14b9d9ab6a"
+  integrity sha1-gYT9NH2snNwYWZLzpmIuFLnZq2o=
+
 transliteration@^2.2.0:
   version "2.2.0"
   resolved "https://registry.yarnpkg.com/transliteration/-/transliteration-2.2.0.tgz#e6333cc74b25ef4465bc27086ed8465c9a19211d"
@@ -9775,6 +9840,13 @@ url@^0.11.0:
     punycode "1.3.2"
     querystring "0.2.0"
 
+urlgrey@1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/urlgrey/-/urlgrey-1.0.0.tgz#72d2f904482d0b602e3c7fa599343d699bbe1017"
+  integrity sha512-hJfIzMPJmI9IlLkby8QrsCykQ+SXDeO2W5Q9QTW3QpqZVTx4a/K7p8/5q+/isD8vsbVaFgql/gvAoQCRQ2Cb5w==
+  dependencies:
+    fast-url-parser "^1.1.3"
+
 use@^3.1.0:
   version "3.1.1"
   resolved "https://registry.yarnpkg.com/use/-/use-3.1.1.tgz#d50c8cac79a19fbc20f2911f56eb973f4e10070f"
@@ -9814,7 +9886,7 @@ uuid@^3.3.2, uuid@^3.4.0:
   resolved "https://registry.yarnpkg.com/uuid/-/uuid-3.4.0.tgz#b23e4358afa8a202fe7a100af1f5f883f02007ee"
   integrity sha512-HjSDRw6gZE5JMggctHBcjVak08+KEVhSIiDzFnT9S9aegmp85S/bReBVTb4QTFaRNptJ9kuYaNhnbNEOkbKb/A==
 
-uuid@^8.3.0:
+uuid@^8.0.0, uuid@^8.3.0:
   version "8.3.2"
   resolved "https://registry.yarnpkg.com/uuid/-/uuid-8.3.2.tgz#80d5b5ced271bb9af6c445f21a1a04c606cefbe2"
   integrity sha512-+NYs2QeMWy+GWFOEm9xnn6HCDp0l7QBD7ml8zLUmJ+93Q5NF0NocErnwkTkXVFNiX3/fpC6afS8Dhb/gz7R7eg==
@@ -9978,6 +10050,11 @@ wcwidth@^1.0.1:
   dependencies:
     defaults "^1.0.3"
 
+webidl-conversions@^3.0.0:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/webidl-conversions/-/webidl-conversions-3.0.1.tgz#24534275e2a7bc6be7bc86611cc16ae0a5654871"
+  integrity sha1-JFNCdeKnvGvnvIZhHMFq4KVlSHE=
+
 webidl-conversions@^5.0.0:
   version "5.0.0"
   resolved "https://registry.yarnpkg.com/webidl-conversions/-/webidl-conversions-5.0.0.tgz#ae59c8a00b121543a2acc65c0434f57b0fc11aff"
@@ -10193,6 +10270,14 @@ whatwg-mimetype@^2.3.0:
   resolved "https://registry.yarnpkg.com/whatwg-mimetype/-/whatwg-mimetype-2.3.0.tgz#3d4b1e0312d2079879f826aff18dbeeca5960fbf"
   integrity sha512-M4yMwr6mAnQz76TbJm914+gPpB/nCwvZbJU28cUD6dR004SAxDLOOSUaB1JDRqLtaOV/vi0IC5lEAGFgrjGv/g==
 
+whatwg-url@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/whatwg-url/-/whatwg-url-5.0.0.tgz#966454e8765462e37644d3626f6742ce8b70965d"
+  integrity sha1-lmRU6HZUYuN2RNNib2dCzotwll0=
+  dependencies:
+    tr46 "~0.0.3"
+    webidl-conversions "^3.0.0"
+
 whatwg-url@^8.0.0, whatwg-url@^8.5.0:
   version "8.7.0"
   resolved "https://registry.yarnpkg.com/whatwg-url/-/whatwg-url-8.7.0.tgz#656a78e510ff8f3937bc0bcbe9f5c0ac35941b77"