DO NOT MERGE add test module removing constrains on date_range

date_range_child/README.rst

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+**This file is going to be generated by oca-gen-addon-readme.**
+
+*Manual changes will be overwritten.*
+
+Please provide content in the ``readme`` directory:
+
+* **DESCRIPTION.rst** (required)
+* INSTALL.rst (optional)
+* CONFIGURE.rst (optional)
+* **USAGE.rst** (optional, highly recommended)
+* DEVELOP.rst (optional)
+* ROADMAP.rst (optional)
+* HISTORY.rst (optional, recommended)
+* **CONTRIBUTORS.rst** (optional, highly recommended)
+* CREDITS.rst (optional)
+
+Content of this README will also be drawn from the addon manifest,
+from keys such as name, authors, maintainers, development_status,
+and license.
+
+A good, one sentence summary in the manifest is also highly recommended.
+

date_range_child/__init__.py

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+from . import models

date_range_child/__manifest__.py

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+# Copyright 2018 ACSONE SA/NV
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+{
+    'name': 'Date Range Child',
+    'version': '12.0.1.0.0',
+    'license': 'AGPL-3',
+    'author': 'ACSONE SA/NV',
+    'website': 'https://acsone.eu/',
+    'depends': [
+        'date_range'
+    ],
+    'data': [
+    ],
+    'demo': [
+    ],
+}

date_range_child/models/__init__.py

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+from . import date_range

date_range_child/models/date_range.py

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+# Copyright 2018 ACSONE SA/NV
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import api, models
+
+
+class DateRange(models.Model):
+
+    _inherit = 'date.range'
+
+    @api.constrains('type_id', 'date_start', 'date_end', 'company_id')
+    def _validate_range(self):
+        return True

date_range_child/tests/__init__.py

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

date_range_child/tests/test_date_range.py

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+# Copyright 2016 ACSONE SA/NV (<http://acsone.eu>)
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl)
+
+from odoo.tests.common import TransactionCase
+
+
+class DateRangeTest(TransactionCase):
+
+    def setUp(self):
+        super(DateRangeTest, self).setUp()
+        self.date_range = self.env['date.range']
+        self.type = self.env['date.range.type'].create(
+            {'name': 'Fiscal year',
+             'company_id': False,
+             'allow_overlap': False})
+
+        self.company = self.env['res.company'].create({
+            'name': 'Test company',
+        })
+        self.company_2 = self.env['res.company'].create({
+            'name': 'Test company 2',
+            'parent_id': self.company.id,
+        })
+        self.typeB = self.env['date.range.type'].create(
+            {'name': 'Fiscal year B',
+             'company_id': self.company.id,
+             'allow_overlap': False})
+
+    def test_overlap_allowed(self):
+        self.date_range.create({
+            'name': 'FS2015',
+            'date_start': '2015-01-01',
+            'date_end': '2015-12-31',
+            'type_id': self.type.id,
+        })
+        self.date_range.create({
+            'name': 'FS2016',
+            'date_start': '2015-01-01',
+            'date_end': '2016-12-31',
+            'type_id': self.type.id,
+        })