Fix build and test failures

* Remove duplications in requirements installation
* Change directory to install xblock-sdk requirements
* Update xblock-utils hash to latest version
* Silence pylint import error
* Remove requirements that are not on PyPI from setup.py
* Fix CSS selector for a <button> that used to be an <a> in Selenium test
* Add img alt attributes to XML test data

.travis.yml

@@ -6,7 +6,6 @@ before_install:
     - "sh -e /etc/init.d/xvfb start"
 install:
     - "sh install_test_deps.sh"
-    - "python setup.py develop"
 script: pep8 poll --max-line-length=120 && pylint poll && python run_tests.py --with-coverage --cover-package=poll
 notifications:
   email: false

install_test_deps.sh

 # Installs xblock-sdk and dependencies needed to run the tests suite.
 # Run this script inside a fresh virtual environment.
 pip install -e git://github.com/edx/xblock-sdk.git#egg=xblock-sdk
-pip install -r $VIRTUAL_ENV/src/xblock-sdk/requirements.txt
+cd $VIRTUAL_ENV/src/xblock-sdk/ && { pip install -r requirements.txt; cd -; }
 pip install -r $VIRTUAL_ENV/src/xblock-sdk/test-requirements.txt
-python setup.py develop
+pip install -r requirements.txt

poll/poll.py

@@ -46,6 +46,7 @@ except ImportError:
     HAS_GROUP_PROFILE = False
 
 try:
+    # pylint: disable=import-error
     from static_replace import replace_static_urls
     HAS_STATIC_REPLACE = True
 except ImportError:

requirements.txt

--e .
 markdown
--e git+https://github.com/edx/xblock-utils.git@db22bc40fd2a75458a3c66d057f88aff5a7383e6#egg=xblock-utils
+-e git://github.com/edx/xblock-utils.git@213a97a50276d6a2504d8133650b2930ead357a0#egg=xblock-utils
 -e git://github.com/nosedjango/nosedjango.git@ed7d7f9aa969252ff799ec159f828eaa8c1cbc5a#egg=nosedjango-dev
 ddt
 mock
+-e .

setup.py

@@ -50,9 +50,7 @@ setup(
         'poll',
     ],
     install_requires=[
-        'XBlock',
         'markdown',
-        'xblock-utils',
         'ddt',
         'mock',
     ],

tests/integration/test_private_results.py

@@ -121,7 +121,7 @@ class TestPrivateResults(PollBaseTest):
     @stub_view_permission(True)
     def test_results_button(self, page_name, names):
         self.go_to_page(page_name)
-        button = self.browser.find_element_by_css_selector('a.view-results-button')
+        button = self.browser.find_element_by_css_selector('.view-results-button')
         button.click()
         self.wait_until_exists('.poll-results')
         self.wait_until_exists('.poll-footnote')

tests/integration/xml/poll_all_pictures.xml

 <poll tally='{"red": 20, "fennec": 29, "kit": 15, "arctic" : 35}'
       question="## What is your favorite kind of fox?"
-      answers='[["red", {"label": "Red Fox", "img": "../img/red_fox.png"}], ["fennec", {"label": "Fennec Fox", "img": "../img/fennec_fox.png"}], ["kit", {"label": "Kit Fox", "img": "../img/kit_fox.png"}], ["arctic", {"label": "Arctic fox", "img": "../img/arctic_fox.png"}]]' />
+      answers='[["red", {"label": "Red Fox", "img": "../img/red_fox.png", "img_alt": "Red Fox"}], ["fennec", {"label": "Fennec Fox", "img": "../img/fennec_fox.png", "img_alt": "Fennec Fox"}], ["kit", {"label": "Kit Fox", "img": "../img/kit_fox.png", "img_alt": "Kit Fox"}], ["arctic", {"label": "Arctic Fox", "img": "../img/arctic_fox.png", "img_alt": "Arctic Fox"}]]' />

tests/integration/xml/poll_one_picture.xml

 <poll tally="{'red': 20, 'fennec': 29, 'kit': 15, 'arctic' : 35}"
       question="## What is your favorite kind of fox?"
-      answers='[["red", {"label": "Red Fox", "img": null}], ["fennec", {"label": "Fennec Fox", "img": "../img/fennec_fox.png"}], ["kit", {"label": "Kit Fox", "img": null}], ["arctic", {"label": "Arctic fox", "img": null}]]' />
+      answers='[["red", {"label": "Red Fox", "img": null}], ["fennec", {"label": "Fennec Fox", "img": "../img/fennec_fox.png", "img_alt": "Fennec Fox"}], ["kit", {"label": "Kit Fox", "img": null}], ["arctic", {"label": "Arctic fox", "img": null}]]' />