  from nose.tools import assert_equal
  
  
  class TestQuickSort(object):
      def test_quick_sort(self, func):
          print('None input')
 
</s> remove     def test_quick_sort(self, func):
 </s> add     def test_quick_sort(self):
        quick_sort = QuickSort()
 </s> remove         data = None
        sorted_data = func(data)
        assert_equal(sorted_data, None)
 </s> add         assert_raises(TypeError, quick_sort.sort, None) </s> remove     "from nose.tools import assert_equal\n",
 </s> add     "from nose.tools import assert_equal, assert_raises\n", </s> remove     "    def test_quick_sort(self, func):\n",
 </s> add     "\n",
    "    def test_quick_sort(self):\n",
    "        quick_sort = QuickSort()\n",
    "\n", </s> remove     "        data = None\n",
    "        sorted_data = func(data)\n",
    "        assert_equal(sorted_data, None)\n",
 </s> add     "        assert_raises(TypeError, quick_sort.sort, None)\n",
from nose.tools import assert_equal, assert_raises
from nose.tools import assert_equal, assert_raises
  
  
  class TestQuickSort(object):
      def test_quick_sort(self, func):
          print('None input')
replace keep keep keep keep keep
 Update quicksort challenge (#134)

Update constraints, test cases, code, algorithm, and tests. 
sorting_searching/quick_sort/test_quick_sort.py