better handle email_sent param + tests for new user

backend/tests_configs.ini

 depot_storage_dir = /tmp/test/depot
 user.auth_token.validity = 604800
 preview_cache_dir = /tmp/test/preview_cache
-email.notification.activated = false
 preview.jpg.restricted_dims = True
+email.notification.activated = false
 
 [functional_test_no_db]
 sqlalchemy.url = sqlite://
 depot_storage_dir = /tmp/test/depot
 user.auth_token.validity = 604800
 preview_cache_dir = /tmp/test/preview_cache
+preview.jpg.restricted_dims = True
 email.notification.activated = false
-preview.jpg.restricted_dims = True
+
+[functional_test_with_mail_test_sync]
+sqlalchemy.url = sqlite:///tracim_test.sqlite
+depot_storage_name = test
+depot_storage_dir = /tmp/test/depot
+user.auth_token.validity = 604800
+preview_cache_dir = /tmp/test/preview_cache
+preview.jpg.restricted_dims = True
+email.notification.activated = true
+email.notification.from.email = test_user_from+{user_id}@localhost
+email.notification.from.default_label = Tracim Notifications
+email.notification.reply_to.email = test_user_reply+{content_id}@localhost
+email.notification.references.email = test_user_refs+{content_id}@localhost
+email.notification.content_update.template.html = %(here)s/tracim_backend/templates/mail/content_update_body_html.mak
+email.notification.content_update.template.text = %(here)s/tracim_backend/templates/mail/content_update_body_text.mak
+email.notification.created_account.template.html = %(here)s/tracim_backend/templates/mail/created_account_body_html.mak
+email.notification.created_account.template.text = %(here)s/tracim_backend/templates/mail/created_account_body_text.mak
+email.notification.content_update.subject = [{website_title}] [{workspace_label}] {content_label} ({content_status_label})
+email.notification.created_account.subject = [{website_title}] Created account
+email.notification.processing_mode = sync
+email.notification.smtp.server = 127.0.0.1
+email.notification.smtp.port = 1025
+email.notification.smtp.user = test_user
+email.notification.smtp.password = just_a_password
+
+
+[functional_test_with_mail_test_async]
+sqlalchemy.url = sqlite:///tracim_test.sqlite
+depot_storage_name = test
+depot_storage_dir = /tmp/test/depot
+user.auth_token.validity = 604800
+preview_cache_dir = /tmp/test/preview_cache
+preview.jpg.restricted_dims = True
+email.notification.activated = true
+email.notification.from.email = test_user_from+{user_id}@localhost
+email.notification.from.default_label = Tracim Notifications
+email.notification.reply_to.email = test_user_reply+{content_id}@localhost
+email.notification.references.email = test_user_refs+{content_id}@localhost
+email.notification.content_update.template.html = %(here)s/tracim_backend/templates/mail/content_update_body_html.mak
+email.notification.content_update.template.text = %(here)s/tracim_backend/templates/mail/content_update_body_text.mak
+email.notification.created_account.template.html = %(here)s/tracim_backend/templates/mail/created_account_body_html.mak
+email.notification.created_account.template.text = %(here)s/tracim_backend/templates/mail/created_account_body_text.mak
+email.notification.content_update.subject = [{website_title}] [{workspace_label}] {content_label} ({content_status_label})
+email.notification.created_account.subject = [{website_title}] Created account
+email.notification.processing_mode = async
+email.notification.smtp.server = 127.0.0.1
+email.notification.smtp.port = 1025
+email.notification.smtp.user = test_user
+email.notification.smtp.password = just_a_password

backend/tracim_backend/tests/functional/test_workspaces.py

 """
 Tests for /api/v2/workspaces subpath endpoints.
 """
-
+import requests
 import transaction
 from depot.io.utils import FileIntent
 
         assert user_role['workspace_id'] == 1
 
 
+class TestUserInvitationWithMailActivatedSync(FunctionalTest):
+
+    fixtures = [BaseFixture, ContentFixtures]
+    config_section = 'functional_test_with_mail_test_sync'
+
+    def test_api__create_workspace_member_role__ok_200__new_user(self):  # nopep8
+        """
+        Create workspace member role
+        :return:
+        """
+        requests.delete('http://127.0.0.1:8025/api/v1/messages')
+        self.testapp.authorization = (
+            'Basic',
+            (
+                'admin@admin.admin',
+                'admin@admin.admin'
+            )
+        )
+        # create workspace role
+        params = {
+            'user_id': None,
+            'user_email_or_public_name': 'bob@bob.bob',
+            'role': 'content-manager',
+        }
+        res = self.testapp.post_json(
+            '/api/v2/workspaces/1/members',
+            status=200,
+            params=params,
+        )
+        user_role_found = res.json_body
+        assert user_role_found['role'] == 'content-manager'
+        assert user_role_found['user_id']
+        user_id = user_role_found['user_id']
+        assert user_role_found['workspace_id'] == 1
+        assert user_role_found['newly_created'] is True
+        assert user_role_found['email_sent'] is True
+
+        # check mail received
+        response = requests.get('http://127.0.0.1:8025/api/v1/messages')
+        response = response.json()
+        assert len(response) == 1
+        headers = response[0]['Content']['Headers']
+        assert headers['From'][0] == 'Tracim Notifications <test_user_from+0@localhost>'  # nopep8
+        assert headers['To'][0] == 'bob <bob@bob.bob>'
+        assert headers['Subject'][0] == '[TRACIM] Created account'
+
+        # TODO - G.M - 2018-08-02 - Place cleanup outside of the test
+        requests.delete('http://127.0.0.1:8025/api/v1/messages')
+
+
+class TestUserInvitationWithMailActivatedASync(FunctionalTest):
+
+    fixtures = [BaseFixture, ContentFixtures]
+    config_section = 'functional_test_with_mail_test_async'
+
+    def test_api__create_workspace_member_role__ok_200__new_user(self):  # nopep8
+        """
+        Create workspace member role
+        :return:
+        """
+        self.testapp.authorization = (
+            'Basic',
+            (
+                'admin@admin.admin',
+                'admin@admin.admin'
+            )
+        )
+        # create workspace role
+        params = {
+            'user_id': None,
+            'user_email_or_public_name': 'bob@bob.bob',
+            'role': 'content-manager',
+        }
+        res = self.testapp.post_json(
+            '/api/v2/workspaces/1/members',
+            status=200,
+            params=params,
+        )
+        user_role_found = res.json_body
+        assert user_role_found['newly_created'] is True
+        assert user_role_found['email_sent'] is False
+
+
 class TestWorkspaceContents(FunctionalTest):
     """
     Tests for /api/v2/workspaces/{workspace_id}/contents endpoint

backend/tracim_backend/views/core_api/workspace_controller.py

                 )  # nopep8
                 newly_created = True
                 if app_config.EMAIL_NOTIFICATION_ACTIVATED and \
-                        app_config.EMAIL_PROCESSING_MODE == 'SYNC':
+                        app_config.EMAIL_NOTIFICATION_PROCESSING_MODE.lower() == 'sync':
                     email_sent = True
 
             except EmailValidationFailed: