     "source": [
      "%%writefile test_binary_search_tree.py\n",
      "from nose.tools import assert_equal\n",
      "\n",
      "class TestBinaryTree(object):\n",
      "\n",
      "\tdef test_insert_traversals (self):\n",
      "\t\tmyTree = BinaryTree()\n",
      "\t\tmyTree2 = BinaryTree()\n",
      "\t\tfor num in [50, 30, 70, 10, 40, 60, 80, 7, 25, 38]:\n",
 
</s> remove     "class TestBinaryTree(object):\n",
 </s> add     "class TestBinaryTree(unittest.TestCase):\n", </s> remove     "from nose.tools import assert_equal\n",
 </s> add     "import unittest\n", </s> remove     "from nose.tools import assert_equal\n",
 </s> add     "import unittest\n", </s> remove class TestBinaryTree(object):
 </s> add class TestBinaryTree(unittest.TestCase): </s> remove     "\t\tassert_equal(myTree2.printPreOrder(), expectVal)\n",
 </s> add     "\t\tself.assertEqual(myTree2.printPreOrder(), expectVal)\n",
    "class TestBinaryTree(unittest.TestCase):\n",
     "source": [
      "%%writefile test_binary_search_tree.py\n",
      "from nose.tools import assert_equal\n",
      "\n",
    "class TestBinaryTree(unittest.TestCase):\n",
      "\n",
      "\tdef test_insert_traversals (self):\n",
      "\t\tmyTree = BinaryTree()\n",
      "\t\tmyTree2 = BinaryTree()\n",
      "\t\tfor num in [50, 30, 70, 10, 40, 60, 80, 7, 25, 38]:\n",
keep keep keep keep replace keep keep keep keep keep
 #273: Remove nose dependency for staging/ (#283) 
staging/graphs_trees/binary_tree/binary_tree_solution.ipynb