diff --git a/edi_exchange_template_oca/tests/__init__.py b/edi_exchange_template_oca/tests/__init__.py
index dbf4fc661..5a0606def 100644
--- a/edi_exchange_template_oca/tests/__init__.py
+++ b/edi_exchange_template_oca/tests/__init__.py
@@ -1 +1,2 @@
 from . import test_edi_backend_output
+from . import test_nswrapper
diff --git a/edi_exchange_template_oca/tests/test_nswrapper.py b/edi_exchange_template_oca/tests/test_nswrapper.py
new file mode 100644
index 000000000..4a5c87cea
--- /dev/null
+++ b/edi_exchange_template_oca/tests/test_nswrapper.py
@@ -0,0 +1,58 @@
+# Copyright 2022 Camptocamp SA
+# @author Simone Orsi <simahawk@gmail.com>
+# License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl).
+from odoo.tests.common import SavepointCase
+from odoo.tools import pycompat
+
+from ..utils import xml_purge_nswrapper
+
+ORDER_RESP_WRAPPER_TMPL = """
+<OrderResponse
+    xmlns="urn:oasis:names:specification:ubl:schema:xsd:OrderResponse-2"
+    xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2"
+    xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2"
+>
+    <cbc:UBLVersionID>2.2</cbc:UBLVersionID>
+{}
+</OrderResponse>
+"""
+
+XML1 = """
+    <nswrapper xmlns:foo="http://www.unece.org/cefact/Foo">
+        <foo:LovelyNamespacedElement />
+    </nswrapper>
+"""
+
+XML2 = """
+    <nswrapper
+            xmlns="urn:oasis:names:specification:ubl:schema:xsd:OrderResponse-2"
+            xmlns:cac="urn:oasis:names:specification:ubl:schema:xsd:CommonAggregateComponents-2"
+            xmlns:cbc="urn:oasis:names:specification:ubl:schema:xsd:CommonBasicComponents-2"
+        >
+        <cac:Party>
+            <cbc:EndpointID>7302347231111</cbc:EndpointID>
+            <cac:PartyIdentification>
+                <cbc:ID>7300070011115</cbc:ID>
+            </cac:PartyIdentification>
+            <cac:PartyName>
+                <cbc:Name>Moderna Produkter AB</cbc:Name>
+            </cac:PartyName>
+        </cac:Party>
+    </nswrapper>
+"""
+
+
+class TestNSWrapper(SavepointCase):
+    maxDiff = None
+
+    def test_purge1(self):
+        res = xml_purge_nswrapper(XML1)
+        self.assertNotIn("nswrapper", pycompat.to_text(res))
+
+    def test_purge2(self):
+        res = xml_purge_nswrapper(XML2)
+        self.assertNotIn("nswrapper", pycompat.to_text(res))
+
+    def test_purge3(self):
+        res = xml_purge_nswrapper(ORDER_RESP_WRAPPER_TMPL.format(XML2))
+        self.assertNotIn("nswrapper", pycompat.to_text(res))