added email validation to purchase_email view

products/tests.py

@@ -1253,3 +1253,24 @@ class PurchaseEmailTest(APITestCase):
         self.assertEquals(response.status_code, 200)
         self.assertEquals(2, len(mail.outbox))
 
+    def test_anon_user_bad_email(self):
+        company = CompanyFactory()
+        self.user.role = 'COOP_MANAGER'
+        self.user.company = company
+        self.user.save()
+        product = ProductFactory(company=company)
+
+        data = {
+            'email': '324r@qwer',
+            'telephone': '123123123',
+            'company': company.id,
+            'product': product.id,
+            'comment': '',
+        }
+
+        response = self.client.post(self.endpoint, data=data, format='json')
+        # assertions
+        self.assertEquals(response.status_code, 406)
+        payload = response.json()
+        self.assertTrue( 'email' in payload['error'])
+