diff --git a/.gitignore b/.gitignore
index bd58829e..ce14d2cd 100644
--- a/.gitignore
+++ b/.gitignore
@@ -134,6 +134,8 @@ dmypy.json
 **/temp/
 **/tmp_result/
 
+.stestr/
+
 # Some people build submodule because of not understanding git basics
 doc-exports
 
diff --git a/.stestr.conf b/.stestr.conf
new file mode 100644
index 00000000..7c6f6ed2
--- /dev/null
+++ b/.stestr.conf
@@ -0,0 +1,3 @@
+[DEFAULT]
+test_path=./otc_doc_convertor/tests/unit
+top_dir=./
diff --git a/otc_doc_convertor/convertor.py b/otc_doc_convertor/convertor.py
index 3a94d7ec..11aa39d3 100644
--- a/otc_doc_convertor/convertor.py
+++ b/otc_doc_convertor/convertor.py
@@ -109,7 +109,7 @@ class OTCDocConvertor:
                             "Cannot find string for rawization anymore"
                         )
 
-    def streamline_html(self, soup, file_name):
+    def streamline_html(self, soup, file_name, args=None):
         # Drop eventual header duplicated anchors
         fname = file_name.replace(".html", "").lower()
         page_anchors = set()
@@ -227,7 +227,7 @@ class OTCDocConvertor:
             if th.p.strong:
                 th.p.strong.unwrap()
 
-        if self.args.improve_table_headers:
+        if args and args.improve_table_headers:
             # Add spaces around "/"
             for th in soup.body.find_all("th"):
                 if hasattr(th, "p") and th.p.string:
@@ -562,7 +562,7 @@ class OTCDocConvertor:
                 content = re.sub(r"≤", "<=", content)
                 content = re.sub(r"≥", ">=", content)
                 soup = bs4.BeautifulSoup(content, "lxml")
-                proc = self.streamline_html(soup, f.name)
+                proc = self.streamline_html(soup, f.name, self.args)
 
                 for lnk in proc.find_all("a"):
                     href = lnk.get("href")
diff --git a/otc_doc_convertor/tests/unit/__init__.py b/otc_doc_convertor/tests/unit/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/otc_doc_convertor/tests/unit/test_convertor.py b/otc_doc_convertor/tests/unit/test_convertor.py
new file mode 100644
index 00000000..9304d6e5
--- /dev/null
+++ b/otc_doc_convertor/tests/unit/test_convertor.py
@@ -0,0 +1,165 @@
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+from unittest import TestCase
+import bs4
+
+from otc_doc_convertor import convertor
+
+
+class TestConvertor(TestCase):
+    def setUp(self):
+        self.convertor = convertor.OTCDocConvertor()
+
+    def test_streamline_html_escape_1(self):
+        test_data = """
+        <ul><li>ObjectCreated:*</li></ul>
+        """
+        expected = """
+        <ul><li>ObjectCreated:*</li></ul>"""
+        soup = bs4.BeautifulSoup(test_data, 'lxml')
+        res = self.convertor.streamline_html(soup, "dummy")
+        self.assertEqual(str(res.find('ul')), expected.strip())
+
+    def test_streamline_html_escape_2(self):
+        test_data = """<tr id=""><td><p>s3:*</p></td></tr>"""
+        expected = """<tr id=""><td><p>s3:*</p></td></tr>"""
+        soup = bs4.BeautifulSoup(test_data, 'lxml')
+        res = self.convertor.streamline_html(soup, "dummy")
+        self.assertEqual(str(res.find('tr')), expected.strip())
+
+    def test_streamline_html_escape_3(self):
+        test_data = """
+        <td><p>If the VPC, subnet, and security group are displayed in the DB
+        instance list, you need to configure vpc:*:get and
+        vpc:*:list.</p></td>
+        """
+        expected = """
+        <td><p>If the VPC, subnet, and security group are displayed in the DB
+        instance list, you need to configure vpc:``*``:get and
+        vpc:``*``:list.</p></td>
+        """
+        soup = bs4.BeautifulSoup(test_data, 'lxml')
+        res = self.convertor.streamline_html(soup, "dummy")
+        self.assertEqual(str(res.find('td')), expected.strip())
+
+    def test_streamline_html_escape_4(self):
+        test_data = """
+        <td><ul><li>You must have VPC-related permissions when creating a n SFS
+        Turbo instance, including the permissions for verifying VPCs, subnets,
+        and security groups, creating virtual IP addresses and ports, and
+        creating security group rules. You must add the following
+        action:<ul><li>"vpc:*:*"</li></ul></td>
+        """
+        expected = """
+        <td><ul><li>You must have VPC-related permissions when creating a n SFS
+        Turbo instance, including the permissions for verifying VPCs, subnets,
+        and security groups, creating virtual IP addresses and ports, and
+        creating security group rules. You must add the following
+        action:<ul><li>"vpc:*:*"</li></ul></li></ul></td>
+        """
+        soup = bs4.BeautifulSoup(test_data, 'lxml')
+        res = self.convertor.streamline_html(soup, "dummy")
+        self.assertEqual(str(res.find('td')), expected.strip())
+
+    def test_streamline_html_escape_5(self):
+        test_data = """
+        <ul><li>"dss:*:get",</li><li>"dss:*:list",</li><li>"dss:*:count"</li></ul>
+        """
+        expected = """
+        <ul><li>"dss:*:get",</li><li>"dss:*:list",</li><li>"dss:*:count"</li></ul>
+        """
+        soup = bs4.BeautifulSoup(test_data, 'lxml')
+        res = self.convertor.streamline_html(soup, "dummy")
+        self.assertEqual(str(res.find('ul')), expected.strip())
+
+    def test_streamline_html_escape_6(self):
+        test_data = """
+        <ul><li>"vpc:*:*"</li></ul>
+        """
+        expected = """
+        <ul><li>"vpc:*:*"</li></ul>
+        """
+        soup = bs4.BeautifulSoup(test_data, 'lxml')
+        res = self.convertor.streamline_html(soup, "dummy")
+        self.assertEqual(str(res.find('ul')), expected.strip())
+
+    def test_streamline_html_escape_7(self):
+        test_data = """
+        <ul><li>vpc:securityGroups:*</li><li>vpc:securityGroupRules:*</li></ul>
+        """
+        expected = """
+        <ul><li>vpc:securityGroups:*</li><li>vpc:securityGroupRules:*</li></ul>
+        """
+        soup = bs4.BeautifulSoup(test_data, 'lxml')
+        res = self.convertor.streamline_html(soup, "dummy")
+        self.assertEqual(str(res.find('ul')), expected.strip())
+
+    def test_streamline_html_escape_8(self):
+        test_data = """
+        <p>cce:kubernetes:*</p>
+        """
+        expected = """
+        <p>cce:kubernetes:*</p>
+        """
+        soup = bs4.BeautifulSoup(test_data, 'lxml')
+        res = self.convertor.streamline_html(soup, "dummy")
+        self.assertEqual(str(res.find('p')), expected.strip())
+
+    def test_streamline_html_escape_9(self):
+        test_data = """
+        <ul><li>The folder name contains a maximum of 255 characters, and the
+        full path cannot exceed 1,023 characters. </li>
+        <li>The folder name cannot be empty.</li>
+        <li>The folder name cannot contain the following special characters:
+        /:*?"&lt;&gt;|\;&amp;,'`!{}[]$%+</li>
+        <li>The value cannot start or end with a period (.).</li>
+        <li>The spaces at the beginning and end are ignored.</li></ul>
+        """  # noqa
+        expected = """
+        <ul><li>The folder name contains a maximum of 255 characters, and the
+        full path cannot exceed 1,023 characters. </li><li>The folder name cannot be empty.</li><li>The folder name cannot contain the following special characters:        <code>/:*?"&lt;&gt;|\\;&amp;,\'`!{}[]$%+</code></li><li>The value cannot start or end with a period (.).</li><li>The spaces at the beginning and end are ignored.</li></ul>
+        """  # noqa
+        soup = bs4.BeautifulSoup(test_data, 'lxml')
+        res = self.convertor.streamline_html(soup, "dummy")
+        self.assertEqual(
+            str(res.find('ul')).replace('\n', ''),
+            expected.strip().replace('\n', ''),
+        )
+
+    def test_streamline_html_escape_10(self):
+        test_data = """
+        <p id="mrs_01_1057__en-us_topic_0000001173630782_p18867820165917">ipFilterRules=allow:ip:127.*, allow:name:localhost, deny:ip:*</p>
+        """  # noqa
+        expected = """
+        <p id="mrs_01_1057__en-us_topic_0000001173630782_p18867820165917">ipFilterRules=allow:ip:127.*, allow:name:localhost, deny:ip:*</p>
+        """  # noqa
+        soup = bs4.BeautifulSoup(test_data, 'lxml')
+        res = self.convertor.streamline_html(soup, "dummy")
+        self.assertEqual(
+            str(res.find('p')),
+            expected.strip(),
+        )
+
+    def test_streamline_html_escape_11(self):
+        test_data = """
+        <td class="cellrowborder" headers="mcps1.3.4.9.2.4.1.3 "><p id="opengauss_01_0009__p91514143511">If the VPC, subnet, and security group are displayed in the DB instance list, you need to configure vpc:*:get and vpc:*:list.</p></td>
+        """  # noqa
+        expected = """
+        <td class="cellrowborder" headers="mcps1.3.4.9.2.4.1.3"><p id="opengauss_01_0009__p91514143511">If the VPC, subnet, and security group are displayed in the DB instance list, you need to configure vpc:``*``:get and vpc:``*``:list.</p></td>
+        """  # noqa
+        soup = bs4.BeautifulSoup(test_data, 'lxml')
+        res = self.convertor.streamline_html(soup, "dummy")
+        self.assertEqual(
+            str(res.find('td')),
+            expected.strip(),
+        )
diff --git a/zuul.yaml b/zuul.yaml
index 08bf7ada..6a3c78c9 100644
--- a/zuul.yaml
+++ b/zuul.yaml
@@ -222,6 +222,7 @@
       propose_change_git_baseurl: "gitea.eco.tsi-dev.otc-service.com"
     check:
       jobs:
+        - otc-tox-py39
         - otc-tox-pep8:
             nodeset: ubuntu-focal
         - otc-doc-exports-convert-application