Merge PR #817 into 12.0

Signed-off-by rafaelbn

partner_email_check/README.rst

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+====================
+Email Format Checker
+====================
+
+.. !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+   !! This file is generated by oca-gen-addon-readme !!
+   !! changes will be overwritten.                   !!
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+.. |badge1| image:: https://img.shields.io/badge/maturity-Beta-yellow.png
+    :target: https://odoo-community.org/page/development-status
+    :alt: Beta
+.. |badge2| image:: https://img.shields.io/badge/licence-AGPL--3-blue.png
+    :target: http://www.gnu.org/licenses/agpl-3.0-standalone.html
+    :alt: License: AGPL-3
+.. |badge3| image:: https://img.shields.io/badge/github-OCA%2Fpartner--contact-lightgray.png?logo=github
+    :target: https://github.com/OCA/partner-contact/tree/12.0/partner_email_check
+    :alt: OCA/partner-contact
+.. |badge4| image:: https://img.shields.io/badge/weblate-Translate%20me-F47D42.png
+    :target: https://translation.odoo-community.org/projects/partner-contact-12-0/partner-contact-12-0-partner_email_check
+    :alt: Translate me on Weblate
+.. |badge5| image:: https://img.shields.io/badge/runbot-Try%20me-875A7B.png
+    :target: https://runbot.odoo-community.org/runbot/134/12.0
+    :alt: Try me on Runbot
+
+|badge1| |badge2| |badge3| |badge4| |badge5| 
+
+This module validates and normalizes the field ``email`` in the model
+``res.partner``.
+
+As part of the normalization, email addresses are converted to lowercase.
+
+Optionally, multiple partners can not be allowed to have the same address.
+This will not work with multiple comma-separated email addresses in the field,
+although validation and normalization are still supported in such cases.
+
+**Table of contents**
+
+.. contents::
+   :local:
+
+Configuration
+=============
+
+Install python package email-validator: ``sudo pip install email-validator``.
+
+To not allow multiple partners to have the same email address, use the
+"Filter duplicate email addresses"/``partner_email_check_filter_duplicates``
+setting.
+
+To validate that email addresses are deliverable (that the hostname exists),
+use the "Check deliverability of email addresses"/``partner_email_check_check_deliverability``
+setting.
+
+Usage
+=====
+
+This module integrate automatically in all of the view ``res.partner``
+
+Bug Tracker
+===========
+
+Bugs are tracked on `GitHub Issues <https://github.com/OCA/partner-contact/issues>`_.
+In case of trouble, please check there if your issue has already been reported.
+If you spotted it first, help us smashing it by providing a detailed and welcomed
+`feedback <https://github.com/OCA/partner-contact/issues/new?body=module:%20partner_email_check%0Aversion:%2012.0%0A%0A**Steps%20to%20reproduce**%0A-%20...%0A%0A**Current%20behavior**%0A%0A**Expected%20behavior**>`_.
+
+Do not contact contributors directly about support or help with technical issues.
+
+Credits
+=======
+
+Authors
+~~~~~~~
+
+* Komit
+
+Contributors
+~~~~~~~~~~~~
+
+* Vo Hoang Dat <dat.vh@komit-consulting.com>
+* Jean-Charles Drubay <jc@komit-consulting.com>
+
+Maintainers
+~~~~~~~~~~~
+
+This module is maintained by the OCA.
+
+.. image:: https://odoo-community.org/logo.png
+   :alt: Odoo Community Association
+   :target: https://odoo-community.org
+
+OCA, or the Odoo Community Association, is a nonprofit organization whose
+mission is to support the collaborative development of Odoo features and
+promote its widespread use.
+
+This module is part of the `OCA/partner-contact <https://github.com/OCA/partner-contact/tree/12.0/partner_email_check>`_ project on GitHub.
+
+You are welcome to contribute. To learn how please visit https://odoo-community.org/page/Contribute.

partner_email_check/__init__.py

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+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from . import models

partner_email_check/__manifest__.py

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+# Copyright 2019 Komit <https://komit-consulting.com>
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+{
+    'name': 'Email Format Checker',
+    'version': '12.0.1.0.0',
+    'summary': 'Validate email address field',
+    'author': "Komit, Odoo Community Association (OCA)",
+    'website': 'https://github.com/OCA/partner-contact',
+    'category': 'Tools',
+    'depends': ['base_setup'],
+    'installable': True,
+    'application': False,
+    'license': 'AGPL-3',
+    'external_dependencies': {
+        'python': ['email_validator']
+    },
+    'data': [
+        'views/base_config_view.xml',
+    ]
+}

partner_email_check/i18n/partner_email_check.pot

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+# Translation of Odoo Server.
+# This file contains the translation of the following modules:
+#	* partner_email_check
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: Odoo Server 11.0\n"
+"Report-Msgid-Bugs-To: \n"
+"Last-Translator: <>\n"
+"Language-Team: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: \n"
+"Plural-Forms: \n"
+
+#. module: partner_email_check
+#: code:addons/partner_email_check/models/res_partner.py:65
+#, python-format
+msgid "%s is an invalid email"
+msgstr ""
+
+#. module: partner_email_check
+#: code:addons/partner_email_check/models/res_partner.py:69
+#, python-format
+msgid "Cannot deliver to email address %s"
+msgstr ""
+
+#. module: partner_email_check
+#: model:ir.model.fields,field_description:partner_email_check.field_res_config_settings_partner_email_check_check_deliverability
+msgid "Check deliverability of email addresses"
+msgstr ""
+
+#. module: partner_email_check
+#: model:ir.model,name:partner_email_check.model_res_partner
+msgid "Contact"
+msgstr ""
+
+#. module: partner_email_check
+#: model:ir.model.fields,help:partner_email_check.field_res_config_settings_partner_email_check_check_deliverability
+msgid "Don't allow email addresses with providers that don't exist"
+msgstr ""
+
+#. module: partner_email_check
+#: model:ir.model.fields,help:partner_email_check.field_res_config_settings_partner_email_check_filter_duplicates
+msgid "Don't allow multiple partners to have the same email address."
+msgstr ""
+
+#. module: partner_email_check
+#: code:addons/partner_email_check/models/res_partner.py:48
+#, python-format
+msgid "Email '%s' is already in use."
+msgstr ""
+
+#. module: partner_email_check
+#: model:ir.ui.view,arch_db:partner_email_check.view_general_configuration
+msgid "Email validation"
+msgstr ""
+
+#. module: partner_email_check
+#: model:ir.ui.view,arch_db:partner_email_check.view_general_configuration
+msgid "Ensure that partner email addresses can be delivered to"
+msgstr ""
+
+#. module: partner_email_check
+#: code:addons/partner_email_check/models/res_partner.py:40
+#, python-format
+msgid "Field contains multiple email addresses. This is not supported when duplicate email addresses are not allowed."
+msgstr ""
+
+#. module: partner_email_check
+#: model:ir.model.fields,field_description:partner_email_check.field_res_config_settings_partner_email_check_filter_duplicates
+msgid "Filter duplicate partner email addresses"
+msgstr ""
+
+#. module: partner_email_check
+#: model:ir.ui.view,arch_db:partner_email_check.view_general_configuration
+msgid "Require partner email addresses to be unique"
+msgstr ""
+
+#. module: partner_email_check
+#: model:ir.model,name:partner_email_check.model_res_config_settings
+msgid "res.config.settings"
+msgstr ""
+

partner_email_check/models/__init__.py

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+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from . import res_config_settings
+from . import res_partner

partner_email_check/models/res_config_settings.py

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+from odoo import api, fields, models
+
+
+class ResConfigSettings(models.TransientModel):
+    _inherit = 'res.config.settings'
+
+    partner_email_check_filter_duplicates = fields.Boolean(
+        string="Filter duplicate partner email addresses",
+        help="Don't allow multiple partners to have the same email address.",
+    )
+
+    partner_email_check_check_deliverability = fields.Boolean(
+        string="Check deliverability of email addresses",
+        help="Don't allow email addresses with providers that don't exist",
+    )
+
+    @api.model
+    def get_values(self):
+        res = super(ResConfigSettings, self).get_values()
+        conf = self.env['ir.config_parameter'].sudo()
+        res.update(
+            partner_email_check_filter_duplicates=conf.get_param(
+                'partner_email_check_filter_duplicates', 'False'
+            ) == 'True',
+            partner_email_check_check_deliverability=conf.get_param(
+                'partner_email_check_check_deliverability', 'False'
+            ) == 'True',
+        )
+        return res
+
+    @api.multi
+    def set_values(self):
+        super(ResConfigSettings, self).set_values()
+        conf = self.env['ir.config_parameter'].sudo()
+        conf.set_param(
+            'partner_email_check_filter_duplicates',
+            self.partner_email_check_filter_duplicates
+        )
+        conf.set_param(
+            'partner_email_check_check_deliverability',
+            self.partner_email_check_check_deliverability
+        )

partner_email_check/models/res_partner.py

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+# Copyright 2019 Komit <https://komit-consulting.com>
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+import logging
+from odoo import api, models, _
+from odoo.exceptions import UserError, ValidationError
+from odoo.tools import config
+
+_logger = logging.getLogger(__name__)
+
+try:
+    from email_validator import (
+        validate_email,
+        EmailSyntaxError,
+        EmailUndeliverableError,
+    )
+except ImportError:
+    _logger.debug('Cannot import "email_validator".')
+
+    validate_email = None
+
+
+class ResPartner(models.Model):
+    _inherit = 'res.partner'
+
+    @api.model
+    def email_check(self, emails):
+        if (config['test_enable'] and
+                not self.env.context.get('test_partner_email_check')):
+            return emails
+        return ','.join(self._normalize_email(email.strip())
+                        for email in emails.split(','))
+
+    @api.constrains('email')
+    def _check_email_unique(self):
+        if self._should_filter_duplicates():
+            for rec in self.filtered("email"):
+                if ',' in rec.email:
+                    raise UserError(
+                        _("Field contains multiple email addresses. This is "
+                          "not supported when duplicate email addresses are "
+                          "not allowed.")
+                    )
+                if self.search_count(
+                    [('email', '=', rec.email), ('id', '!=', rec.id)]
+                ):
+                    raise UserError(
+                        _("Email '%s' is already in use.") % rec.email.strip()
+                    )
+
+    def _normalize_email(self, email):
+        if validate_email is None:
+            _logger.warning(
+                'Can not validate email, '
+                'python dependency required "email_validator"')
+            return email
+
+        try:
+            result = validate_email(
+                email,
+                check_deliverability=self._should_check_deliverability(),
+            )
+        except EmailSyntaxError:
+            raise ValidationError(
+                _("%s is an invalid email") % email.strip()
+            )
+        except EmailUndeliverableError:
+            raise ValidationError(
+                _("Cannot deliver to email address %s") % email.strip()
+            )
+        return result['local'].lower() + '@' + result['domain_i18n']
+
+    def _should_filter_duplicates(self):
+        conf = self.env['ir.config_parameter'].sudo().get_param(
+            'partner_email_check_filter_duplicates', 'False'
+        )
+        return conf == 'True'
+
+    def _should_check_deliverability(self):
+        conf = self.env['ir.config_parameter'].sudo().get_param(
+            'partner_email_check_check_deliverability', 'False'
+        )
+        return conf == 'True'
+
+    @api.model
+    def create(self, vals):
+        if vals.get('email'):
+            vals['email'] = self.email_check(vals['email'])
+        return super(ResPartner, self).create(vals)
+
+    @api.multi
+    def write(self, vals):
+        if vals.get('email'):
+            vals['email'] = self.email_check(vals['email'])
+        return super(ResPartner, self).write(vals)

partner_email_check/readme/CONFIGURE.rst

@@ -0,0 +1,9 @@
+Install python package email-validator: ``sudo pip install email-validator``.
+
+To not allow multiple partners to have the same email address, use the
+"Filter duplicate email addresses"/``partner_email_check_filter_duplicates``
+setting.
+
+To validate that email addresses are deliverable (that the hostname exists),
+use the "Check deliverability of email addresses"/``partner_email_check_check_deliverability``
+setting.

partner_email_check/readme/CONTRIBUTORS.rst

@@ -0,0 +1,2 @@
+* Vo Hoang Dat <dat.vh@komit-consulting.com>
+* Jean-Charles Drubay <jc@komit-consulting.com>

partner_email_check/readme/DESCRIPTION.rst

@@ -0,0 +1,8 @@
+This module validates and normalizes the field ``email`` in the model
+``res.partner``.
+
+As part of the normalization, email addresses are converted to lowercase.
+
+Optionally, multiple partners can not be allowed to have the same address.
+This will not work with multiple comma-separated email addresses in the field,
+although validation and normalization are still supported in such cases.

partner_email_check/readme/USAGE.rst

@@ -0,0 +1 @@
+This module integrate automatically in all of the view ``res.partner``

partner_email_check/static/description/index.html

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+  padding-left: 0 }
+
+/* "booktabs" style (no vertical lines) */
+table.docutils.booktabs {
+  border: 0px;
+  border-top: 2px solid;
+  border-bottom: 2px solid;
+  border-collapse: collapse;
+}
+table.docutils.booktabs * {
+  border: 0px;
+}
+table.docutils.booktabs th {
+  border-bottom: thin solid;
+  text-align: left;
+}
+
+h1 tt.docutils, h2 tt.docutils, h3 tt.docutils,
+h4 tt.docutils, h5 tt.docutils, h6 tt.docutils {
+  font-size: 100% }
+
+ul.auto-toc {
+  list-style-type: none }
+
+</style>
+</head>
+<body>
+<div class="document" id="email-format-checker">
+<h1 class="title">Email Format Checker</h1>
+
+<!-- !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+!! This file is generated by oca-gen-addon-readme !!
+!! changes will be overwritten.                   !!
+!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! -->
+<p><a class="reference external" href="https://odoo-community.org/page/development-status"><img alt="Beta" src="https://img.shields.io/badge/maturity-Beta-yellow.png" /></a> <a class="reference external" href="http://www.gnu.org/licenses/agpl-3.0-standalone.html"><img alt="License: AGPL-3" src="https://img.shields.io/badge/licence-AGPL--3-blue.png" /></a> <a class="reference external" href="https://github.com/OCA/partner-contact/tree/12.0/partner_email_check"><img alt="OCA/partner-contact" src="https://img.shields.io/badge/github-OCA%2Fpartner--contact-lightgray.png?logo=github" /></a> <a class="reference external" href="https://translation.odoo-community.org/projects/partner-contact-12-0/partner-contact-12-0-partner_email_check"><img alt="Translate me on Weblate" src="https://img.shields.io/badge/weblate-Translate%20me-F47D42.png" /></a> <a class="reference external" href="https://runbot.odoo-community.org/runbot/134/12.0"><img alt="Try me on Runbot" src="https://img.shields.io/badge/runbot-Try%20me-875A7B.png" /></a></p>
+<p>This module validates and normalizes the field <tt class="docutils literal">email</tt> in the model
+<tt class="docutils literal">res.partner</tt>.</p>
+<p>As part of the normalization, email addresses are converted to lowercase.</p>
+<p>Optionally, multiple partners can not be allowed to have the same address.
+This will not work with multiple comma-separated email addresses in the field,
+although validation and normalization are still supported in such cases.</p>
+<p><strong>Table of contents</strong></p>
+<div class="contents local topic" id="contents">
+<ul class="simple">
+<li><a class="reference internal" href="#configuration" id="id1">Configuration</a></li>
+<li><a class="reference internal" href="#usage" id="id2">Usage</a></li>
+<li><a class="reference internal" href="#bug-tracker" id="id3">Bug Tracker</a></li>
+<li><a class="reference internal" href="#credits" id="id4">Credits</a><ul>
+<li><a class="reference internal" href="#authors" id="id5">Authors</a></li>
+<li><a class="reference internal" href="#contributors" id="id6">Contributors</a></li>
+<li><a class="reference internal" href="#maintainers" id="id7">Maintainers</a></li>
+</ul>
+</li>
+</ul>
+</div>
+<div class="section" id="configuration">
+<h1><a class="toc-backref" href="#id1">Configuration</a></h1>
+<p>Install python package email-validator: <tt class="docutils literal">sudo pip install <span class="pre">email-validator</span></tt>.</p>
+<p>To not allow multiple partners to have the same email address, use the
+“Filter duplicate email addresses”/<tt class="docutils literal">partner_email_check_filter_duplicates</tt>
+setting.</p>
+<p>To validate that email addresses are deliverable (that the hostname exists),
+use the “Check deliverability of email addresses”/<tt class="docutils literal">partner_email_check_check_deliverability</tt>
+setting.</p>
+</div>
+<div class="section" id="usage">
+<h1><a class="toc-backref" href="#id2">Usage</a></h1>
+<p>This module integrate automatically in all of the view <tt class="docutils literal">res.partner</tt></p>
+</div>
+<div class="section" id="bug-tracker">
+<h1><a class="toc-backref" href="#id3">Bug Tracker</a></h1>
+<p>Bugs are tracked on <a class="reference external" href="https://github.com/OCA/partner-contact/issues">GitHub Issues</a>.
+In case of trouble, please check there if your issue has already been reported.
+If you spotted it first, help us smashing it by providing a detailed and welcomed
+<a class="reference external" href="https://github.com/OCA/partner-contact/issues/new?body=module:%20partner_email_check%0Aversion:%2012.0%0A%0A**Steps%20to%20reproduce**%0A-%20...%0A%0A**Current%20behavior**%0A%0A**Expected%20behavior**">feedback</a>.</p>
+<p>Do not contact contributors directly about support or help with technical issues.</p>
+</div>
+<div class="section" id="credits">
+<h1><a class="toc-backref" href="#id4">Credits</a></h1>
+<div class="section" id="authors">
+<h2><a class="toc-backref" href="#id5">Authors</a></h2>
+<ul class="simple">
+<li>Komit</li>
+</ul>
+</div>
+<div class="section" id="contributors">
+<h2><a class="toc-backref" href="#id6">Contributors</a></h2>
+<ul class="simple">
+<li>Vo Hoang Dat &lt;<a class="reference external" href="mailto:dat.vh&#64;komit-consulting.com">dat.vh&#64;komit-consulting.com</a>&gt;</li>
+<li>Jean-Charles Drubay &lt;<a class="reference external" href="mailto:jc&#64;komit-consulting.com">jc&#64;komit-consulting.com</a>&gt;</li>
+</ul>
+</div>
+<div class="section" id="maintainers">
+<h2><a class="toc-backref" href="#id7">Maintainers</a></h2>
+<p>This module is maintained by the OCA.</p>
+<a class="reference external image-reference" href="https://odoo-community.org"><img alt="Odoo Community Association" src="https://odoo-community.org/logo.png" /></a>
+<p>OCA, or the Odoo Community Association, is a nonprofit organization whose
+mission is to support the collaborative development of Odoo features and
+promote its widespread use.</p>
+<p>This module is part of the <a class="reference external" href="https://github.com/OCA/partner-contact/tree/12.0/partner_email_check">OCA/partner-contact</a> project on GitHub.</p>
+<p>You are welcome to contribute. To learn how please visit <a class="reference external" href="https://odoo-community.org/page/Contribute">https://odoo-community.org/page/Contribute</a>.</p>
+</div>
+</div>
+</div>
+</body>
+</html>

partner_email_check/tests/__init__.py

@@ -0,0 +1,3 @@
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from . import test_partner_email_check

partner_email_check/tests/test_partner_email_check.py

@@ -0,0 +1,161 @@
+# Copyright 2019 Komit <https://komit-consulting.com>
+# License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl).
+
+from unittest.mock import patch
+
+from odoo.exceptions import ValidationError
+from odoo.tests.common import TransactionCase
+from odoo.tools.misc import mute_logger
+
+
+class TestPartnerEmailCheck(TransactionCase):
+    def setUp(self):
+        super(TestPartnerEmailCheck, self).setUp()
+        # Checks are disabled during tests unless this key is set
+        self.res_partner = self.env['res.partner'].with_context(
+            test_partner_email_check=True
+        )
+        self.test_partner = self.res_partner.create({
+            'name': 'test',
+        })
+        self.wizard = self.env['res.config.settings'].create({})
+        self.wizard.partner_email_check_filter_duplicates = False
+        self.wizard.partner_email_check_check_deliverability = False
+        self.wizard.set_values()
+
+    def test_bad_email(self):
+        """Test rejection of bad emails."""
+        with self.assertRaises(ValidationError):
+            self.test_partner.email = 'bad@email@domain..com'
+
+    def test_good_email(self):
+        """Test acceptance of good"""
+        self.test_partner.email = 'goodemail@domain.com'
+        self.assertTrue(self.test_partner.email)
+
+    def test_bad_emails(self):
+        """Test rejection of bad emails."""
+        with self.assertRaises(ValidationError):
+            self.test_partner.email = 'good@domain.com,bad@email@domain..com'
+
+    def test_good_emails(self):
+        """Test acceptance of good"""
+        self.test_partner.email = 'goodemail@domain.com,goodemail2@domain.com'
+        self.assertTrue(self.test_partner.email)
+
+    def test_email_domain_normalization(self):
+        """Test normalization of email domain names, including punycode."""
+        self.test_partner.write({'email': 'goodemail@xn--xamPle-9ua.com'})
+        self.assertEqual(self.test_partner.email, u'goodemail@éxample.com')
+
+    def test_multi_email_domain_normalization(self):
+        """Test normalization of email domain names of multiple addresses."""
+        self.test_partner.write({
+            'email': 'goodemail@doMAIN.com,othergood@xn--xample-9ua.com'
+        })
+        self.assertEqual(
+            self.test_partner.email,
+            u'goodemail@domain.com,othergood@éxample.com'
+        )
+
+    def test_email_local_normalization(self):
+        """Test normalization of the local part of email addresses."""
+        self.test_partner.write({'email': 'Me@mail.org'})
+        # .lower() is locale-dependent, so don't hardcode the result
+        self.assertEqual(self.test_partner.email, 'Me'.lower() + '@mail.org')
+
+    def test_multi_email_local_normalization(self):
+        """Test normalization of the local part of multiple addresses."""
+        self.test_partner.write({'email': 'You@mAiL.net,mE@mail.com'})
+        self.assertEqual(
+            self.test_partner.email,
+            'You'.lower() + '@mail.net,' + 'mE'.lower() + '@mail.com'
+        )
+
+    def disallow_duplicates(self):
+        self.wizard.partner_email_check_filter_duplicates = True
+        self.wizard.set_values()
+
+    def test_duplicate_addresses_disallowed(self):
+        self.disallow_duplicates()
+        self.test_partner.write({'email': 'email@domain.tld'})
+        with self.assertRaises(ValidationError):
+            self.res_partner.create({
+                'name': 'alsotest',
+                'email': 'email@domain.tld'
+            })
+
+    def test_duplicate_after_normalization_addresses_disallowed(self):
+        self.disallow_duplicates()
+        self.res_partner.create({
+            'name': 'alsotest',
+            'email': 'email@doMAIN.tld'
+        })
+        with self.assertRaises(ValidationError):
+            self.test_partner.email = 'email@domain.tld'
+
+    def test_multiple_addresses_disallowed_when_duplicates_filtered(self):
+        self.disallow_duplicates()
+        with self.assertRaises(ValidationError):
+            self.test_partner.email = 'foo@bar.org,email@domain.tld'
+
+    def test_duplicate_addresses_allowed_by_default(self):
+        self.res_partner.create({
+            'name': 'alsotest',
+            'email': 'email@domain.tld',
+        })
+        self.test_partner.email = 'email@domain.tld'
+
+    def check_deliverability(self):
+        self.wizard.partner_email_check_check_deliverability = True
+        self.wizard.set_values()
+
+    def test_deliverable_addresses_allowed(self):
+        self.check_deliverability()
+        # We only need a resolving domain, not a real user
+        self.test_partner.email = 'gooddomain-icraglusrk@gmail.com'
+        self.assertTrue(self.test_partner.email)
+
+    def test_nondeliverable_addresses_not_allowed(self):
+        self.check_deliverability()
+        with self.assertRaises(ValidationError):
+            # This domain may resolve by mistake on certain network setups
+            # At least until a new version of email-validator is released
+            # See https://github.com/JoshData/python-email-validator/pull/30
+            self.test_partner.email = 'cezrik@acoa.nrdkt'
+
+    def test_config_getters(self):
+        other_wizard = self.env['res.config.settings'].create({})
+        self.assertFalse(other_wizard.partner_email_check_check_deliverability)
+        self.assertFalse(other_wizard.partner_email_check_filter_duplicates)
+        self.disallow_duplicates()
+        self.check_deliverability()
+        other_wizard = self.env['res.config.settings'].create({})
+        self.assertTrue(other_wizard.partner_email_check_check_deliverability)
+        self.assertTrue(other_wizard.partner_email_check_filter_duplicates)
+
+    @mute_logger('odoo.addons.partner_email_check.models.res_partner')
+    def test_lacking_dependency_does_not_halt_execution(self):
+        with patch('odoo.addons.partner_email_check.models.res_partner.'
+                   'validate_email', None):
+            self.test_partner.email = 'notatallvalid@@domain'
+
+    @mute_logger('odoo.addons.partner_email_check.models.res_partner')
+    def test_lacking_dependency_keeps_uniqueness_constraint_working(self):
+        self.disallow_duplicates()
+        with patch('odoo.addons.partner_email_check.models.res_partner.'
+                   'validate_email', None):
+            self.res_partner.create({
+                'name': 'alsotest',
+                'email': 'email@domain.tld'
+            })
+            with self.assertRaises(ValidationError):
+                self.test_partner.email = 'email@domain.tld'
+
+    def test_invalid_email_addresses_allowed_during_tests(self):
+        # Note: testing without test_partner_email_check in the context
+        new_partner = self.env['res.partner'].create({
+            'name': 'invalidly emailed',
+            'email': 'invalid'
+        })
+        self.assertEqual('invalid', new_partner.email)

partner_email_check/views/base_config_view.xml

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+    <record id="view_general_configuration" model="ir.ui.view">
+        <field name="name">partner_email_check</field>
+        <field name="model">res.config.settings</field>
+        <field name="inherit_id"
+               ref="base_setup.res_config_settings_view_form" />
+        <field name="arch" type="xml">
+            <xpath expr="//div[@name='multi_company']" position='after'>
+                <h2>Email validation</h2>
+                <div class="row mt16 o_settings_container"
+                     name="partner_email_check">
+                    <div class="col-xs-12 col-md-6 o_setting_box">
+                        <div class="o_setting_left_pane">
+                            <field name="partner_email_check_filter_duplicates" />
+                        </div>
+                        <div class="o_setting_right_pane">
+                            <label for="partner_email_check_filter_duplicates" />
+                            <div class="text-muted">
+                                Require partner email addresses to be unique
+                            </div>
+                        </div>
+                    </div>
+                    <div class="col-xs-12 col-md-6 o_setting_box">
+                        <div class="o_setting_left_pane">
+                            <field name="partner_email_check_check_deliverability" />
+                        </div>
+                        <div class="o_setting_right_pane">
+                            <label for="partner_email_check_check_deliverability" />
+                            <div class="text-muted">
+                                Ensure that partner email addresses can be delivered to
+                            </div>
+                        </div>
+                    </div>
+                </div>
+            </xpath>
+        </field>
+    </record>
+</odoo>

requirements.txt

@@ -0,0 +1 @@
+email_validator