diff --git a/bpost_address_validation/tests/__init__.py b/bpost_address_validation/tests/__init__.py
new file mode 100644
index 00000000..b5e8ce58
--- /dev/null
+++ b/bpost_address_validation/tests/__init__.py
@@ -0,0 +1,2 @@
+# Copyright 2023 ACSONE SA/NV
+from . import test_bpost_address_validation_wizard
diff --git a/bpost_address_validation/tests/test_bpost_address_validation_wizard.py b/bpost_address_validation/tests/test_bpost_address_validation_wizard.py
new file mode 100644
index 00000000..9c541279
--- /dev/null
+++ b/bpost_address_validation/tests/test_bpost_address_validation_wizard.py
@@ -0,0 +1,120 @@
+import responses
+
+from odoo.tests.common import TransactionCase
+
+
+class TestBpostAddressValidationWizard(TransactionCase):
+    @classmethod
+    @responses.activate
+    def setUpClass(cls):
+        super(TestBpostAddressValidationWizard, cls).setUpClass()
+
+        cls.country = cls.env["res.country"].search([("code", "=", "BE")])
+        cls.partner = cls.env["res.partner"].create(
+            {
+                "name": "Acsone",
+                "street": "Quai Banneng 6",
+                "city": "Liège",
+                "zip": "4000",
+                "country_id": cls.country.id,
+            }
+        )
+        cls.return_value = {
+            "ValidateAddressesResponse": {
+                "ValidatedAddressResultList": {
+                    "ValidatedAddressResult": [
+                        {
+                            "@id": "1",
+                            "ValidatedAddressList": {
+                                "ValidatedAddress": [
+                                    {
+                                        "PostalAddress": {
+                                            "StructuredDeliveryPointLocation": {
+                                                "StreetName": "QUAI BANNING",
+                                                "StreetNumber": "6",
+                                            },
+                                            "StructuredPostalCodeMunicipality": {
+                                                "PostalCode": "4000",
+                                                "MunicipalityName": "LIÈGE",
+                                            },
+                                            "CountryName": "BELGIQUE",
+                                        },
+                                        "AddressLanguage": "fr",
+                                        "ServicePointDetail": {
+                                            "GeographicalLocationInfo": {
+                                                "GeographicalLocation": {
+                                                    "Latitude": {
+                                                        "Value": "50.61389",
+                                                        "CoordinateType": "DEGDEC",
+                                                    },
+                                                    "Longitude": {
+                                                        "Value": "5.575775",
+                                                        "CoordinateType": "DEGDEC",
+                                                    },
+                                                }
+                                            }
+                                        },
+                                        "Label": {
+                                            "Line": ["QUAI BANNING 6", "4000 LIÈGE"]
+                                        },
+                                    }
+                                ]
+                            },
+                            "Error": [
+                                {
+                                    "ComponentRef": "UnstructuredDeliveryPointLocation",
+                                    "ErrorCode": "anomaly_in_field",
+                                    "ErrorSeverity": "warning",
+                                }
+                            ],
+                            "DetectedInputAddressLanguage": "fr",
+                            "FormattedSubmittedAddress": {
+                                "Line": ["Quai Banneng 6", "4000 Liège"]
+                            },
+                            "TransactionID": "10379d53-2072-420e-b875-e83148ef94e0",
+                        }
+                    ]
+                }
+            }
+        }
+        responses.add(
+            method=responses.POST,
+            url="https://webservices-pub.bpost.be/ws/"
+            + "ExternalMailingAddressProofingCSREST_v1/address/validateAddresses",
+            json=cls.return_value,
+        )
+        cls.wizard = cls.env["bpost.address.validation.wizard"].create(
+            {"partner_id": cls.partner.id}
+        )
+        cls.wizard._compute_response_address()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestBpostAddressValidationWizard, cls).tearDownClass()
+
+    def test_is_not_valid(self):
+        self.assertFalse(self.wizard.is_valid)
+
+    def test_apply_changes(self):
+        self.wizard.apply_changes()
+
+        self.assertEqual("QUAI BANNING 6", self.partner.street)
+        self.assertEqual("LIÈGE", self.partner.city)
+        self.assertEqual("4000", self.partner.zip)
+
+    def test_suggest_changes(self):
+        self.assertEqual("QUAI BANNING 6 4000, LIÈGE", self.wizard.suggest_changes)
+        self.assertFalse(self.wizard.bad_address)
+        self.assertFalse(self.wizard.is_valid)
+
+    def test_invalid_address(self):
+        self.partner.street = "Quai Banning"
+        self.wizard._compute_response_address()
+        self.assertTrue(self.wizard.bad_address)
+        self.assertFalse(self.wizard.is_valid)
+
+    def test_valid_address(self):
+        self.partner.street = "Quai Banning 6"
+        self.wizard._compute_response_address()
+        self.assertTrue(self.wizard.is_valid)
+        self.assertFalse(self.wizard.bad_address)