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+..
+ This work is licensed under a Creative Commons Attribution 3.0 Unported
+ License.
+
+ http://creativecommons.org/licenses/by/3.0/legalcode
+
+===================================
+Intern-based Unit Tests for Fuel UI
+===================================
+
+https://blueprints.launchpad.net/fuel/+spec/ui-unit-tests
+
+Implement unit test runner for Fuel UI.
+
+
+Problem description
+===================
+
+Currently Fuel UI is covered only by functional tests based on CasperJS
+functional testing framework. It allows end-to-end testing of Fuel UI, but
+there are lots of cases which can't be covered (or covered with lots of
+efforts) by functional testing. So we need also to be able to write and run
+unit tests for Fuel UI.
+
+
+Proposed change
+===============
+
+We should implement unit test runner for Fuel UI using Intern Framework:
+* It should be available by running ``./run_tests.sh --ui-unit``.
+* It should be voting.
+* At least one test suite should be added (for Expression parser).
+
+Alternatives
+------------
+
+There are quite a few JS unit test frameworks available, but we should go with
+Intern as it also support functional testing and we plan to switch to it
+someday.
+
+Data model impact
+-----------------
+
+None.
+
+REST API impact
+---------------
+
+None.
+
+Upgrade impact
+--------------
+
+None.
+
+Security impact
+---------------
+
+None.
+
+Notifications impact
+--------------------
+
+None.
+
+Other end user impact
+---------------------
+
+None.
+
+Performance Impact
+------------------
+
+None.
+
+Plugin impact
+-------------
+
+None.
+
+Other deployer impact
+---------------------
+
+None.
+
+Developer impact
+----------------
+
+If suitable, new changes to Fuel UI should be covered by unit tests.
+
+Infrastructure impact
+---------------------
+
+Intern uses Selenium, so Java Runtime Environment (JRE) 1.6 or newer version
+should be installed on Fuel CI workers.
+
+
+Implementation
+==============
+
+Assignee(s)
+-----------
+
+Primary assignee:
+* Vitaly Kramskikh <vkramskikh@mirantis.com>
+
+Other contributors:
+* Przemyslaw Kaminski <pkaminski@mirantis.com>
+
+Mandatory design review:
+* Vitaly Kramskikh <vkramskikh@mirantis.com>
+
+QA engineer:
+* Anastasia Palkina <apalkina@mirantis.com>
+
+Work Items
+----------
+
+* Rearrange the code in place where it is needed so it can be covered by
+  unit tests.
+* Update gulpfile so gulp can run unit tests by command ``gulp unit-tests``.
+* Update ``run_tests.sh`` so in can run uint tests using ``--ui-unit``
+  argument. Unit tests should be voting.
+* Add a test suite for Expression parser.
+
+
+Dependencies
+============
+
+None.
+
+
+Testing
+=======
+
+None.
+
+Acceptance criteria
+-------------------
+
+* It is possible to run unit tests by running ``./run_tests.sh --ui-unit``.
+* Unit tests failure leads to failure of `verify-fuel-web` job.
+* Documentation is updated to mention how to set up and run unit tests.
+* Unit test suite for Expression parser exists.
+
+
+Documentation Impact
+====================
+
+* Development environment setup docs should be modified to mention dependency
+  on JRE for UI unit testing.
+
+* There should be described how to run unit tests on development environments.
+
+
+References
+==========
+
+* InternJS library - https://theintern.github.io
+* Spec for Intern-based functional tests - https://review.openstack.org/195520
+* Gulpfile -
+  https://github.com/stackforge/fuel-web/blob/master/nailgun/gulpfile.js
+* Expression parser -
+  https://github.com/stackforge/fuel-web/tree/master/nailgun/static/expression