{
 "nbformat": 4,
 "nbformat_minor": 0,
 "metadata": {
  "colab": {
   "name": "TestingAndDebugging.ipynb",
   "provenance": [],
   "collapsed_sections": []
  },
  "kernelspec": {
   "name": "javascript",
   "language": "javascript",
   "display_name": "Javascript (Node.js)"
  }
 },
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {
    "id": "l03yqyWznTcX",
    "colab_type": "text"
   },
   "source": [
    "# [Testing and Debugging Jupyter Notebooks](https://kolesnikov.ga/Testing_and_Debugging_Jupyter_Notebooks/)\n"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "id": "AkIXccj9npFw",
    "colab_type": "text"
   },
   "source": [
    "## Running Example"
   ]
  },
  {
   "cell_type": "code",
   "metadata": {
    "id": "5M7kYQYtnRdg",
    "colab_type": "code",
    "colab": {}
   },
   "source": [
    "def add(a, b):\n",
    "    \"\"\"Return the sum of a and b.\"\"\"\n",
    "    sum = a\n",
    "    return sum\n"
   ],
   "execution_count": 0,
   "outputs": []
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "id": "hsUO8IYtnvTo",
    "colab_type": "text"
   },
   "source": [
    "## Doctest"
   ]
  },
  {
   "cell_type": "code",
   "metadata": {
    "id": "gWXNlxJanxhi",
    "colab_type": "code",
    "outputId": "c3632f18-b676-482e-f711-450029efc0ad",
    "executionInfo": {
     "status": "ok",
     "timestamp": 1572433329178,
     "user_tz": -540,
     "elapsed": 881,
     "user": {
      "displayName": "Kakigi Katuyuki",
      "photoUrl": "https://lh3.googleusercontent.com/a-/AAuE7mAPb3OlX2ysmc2JV2nXUX_C3MVRAV6O3-HkTzd6=s64",
      "userId": "00784428381987829532"
     }
    },
    "colab": {
     "base_uri": "https://localhost:8080/",
     "height": 395
    }
   },
   "source": [
    "def add(a, b):\n",
    "    \"\"\"Return the sum of a and b.\n",
    "\n",
    "    >>> add(2, 2)\n",
    "    4\n",
    "    \"\"\"\n",
    "    sum = a\n",
    "    return sum\n",
    "    \n",
    "import doctest\n",
    "doctest.testmod(verbose=True)"
   ],
   "execution_count": 3,
   "outputs": [
    {
     "output_type": "stream",
     "text": [
      "Trying:\n",
      "    add(2, 2)\n",
      "Expecting:\n",
      "    4\n",
      "**********************************************************************\n",
      "File \"__main__\", line 4, in __main__.add\n",
      "Failed example:\n",
      "    add(2, 2)\n",
      "Expected:\n",
      "    4\n",
      "Got:\n",
      "    2\n",
      "1 items had no tests:\n",
      "    __main__\n",
      "**********************************************************************\n",
      "1 items had failures:\n",
      "   1 of   1 in __main__.add\n",
      "1 tests in 2 items.\n",
      "0 passed and 1 failed.\n",
      "***Test Failed*** 1 failures.\n"
     ],
     "name": "stdout"
    },
    {
     "output_type": "execute_result",
     "data": {
      "text/plain": [
       "TestResults(failed=1, attempted=1)"
      ]
     },
     "metadata": {
      "tags": []
     },
     "execution_count": 3
    }
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "id": "2quaRHFZn5xy",
    "colab_type": "text"
   },
   "source": [
    "## Unittest"
   ]
  },
  {
   "cell_type": "code",
   "metadata": {
    "id": "7-Vm_pZ5n7qt",
    "colab_type": "code",
    "outputId": "73b6c9d5-1d47-495c-950b-7dd07a9e52c4",
    "executionInfo": {
     "status": "ok",
     "timestamp": 1572321410496,
     "user_tz": -540,
     "elapsed": 926,
     "user": {
      "displayName": "Kakigi Katuyuki",
      "photoUrl": "https://lh3.googleusercontent.com/a-/AAuE7mAPb3OlX2ysmc2JV2nXUX_C3MVRAV6O3-HkTzd6=s64",
      "userId": "00784428381987829532"
     }
    },
    "colab": {
     "base_uri": "https://localhost:8080/",
     "height": 272
    }
   },
   "source": [
    "import unittest\n",
    "\n",
    "\n",
    "class TestNotebook(unittest.TestCase):\n",
    "\n",
    "    def test_add(self):\n",
    "        self.assertEqual(add(2, 2), 5)\n",
    "\n",
    "unittest.main(argv=[''], verbosity=2, exit=False)"
   ],
   "execution_count": 0,
   "outputs": [
    {
     "output_type": "stream",
     "text": [
      "test_add (__main__.TestNotebook) ... FAIL\n",
      "\n",
      "======================================================================\n",
      "FAIL: test_add (__main__.TestNotebook)\n",
      "----------------------------------------------------------------------\n",
      "Traceback (most recent call last):\n",
      "  File \"<ipython-input-4-4ac71e015a29>\", line 7, in test_add\n",
      "    self.assertEqual(add(2, 2), 5)\n",
      "AssertionError: 2 != 5\n",
      "\n",
      "----------------------------------------------------------------------\n",
      "Ran 1 test in 0.003s\n",
      "\n",
      "FAILED (failures=1)\n"
     ],
     "name": "stderr"
    },
    {
     "output_type": "execute_result",
     "data": {
      "text/plain": [
       "<unittest.main.TestProgram at 0x7f9fdcd4d4a8>"
      ]
     },
     "metadata": {
      "tags": []
     },
     "execution_count": 4
    }
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {
    "id": "Jx9HLmkAoBoO",
    "colab_type": "text"
   },
   "source": [
    "## Debugging a Failed Test"
   ]
  },
  {
   "cell_type": "code",
   "metadata": {
    "id": "KI8xVY1eoEwZ",
    "colab_type": "code",
    "outputId": "94113eb6-7a80-476c-c764-d9db40f0c216",
    "executionInfo": {
     "status": "ok",
     "timestamp": 1572433412853,
     "user_tz": -540,
     "elapsed": 9336,
     "user": {
      "displayName": "Kakigi Katuyuki",
      "photoUrl": "https://lh3.googleusercontent.com/a-/AAuE7mAPb3OlX2ysmc2JV2nXUX_C3MVRAV6O3-HkTzd6=s64",
      "userId": "00784428381987829532"
     }
    },
    "colab": {
     "base_uri": "https://localhost:8080/",
     "height": 719
    }
   },
   "source": [
    "def add(a, b):\n",
    "    \"\"\"Return the sum of a and b.\n",
    "\n",
    "    >>> add(2, 2)\n",
    "    4\n",
    "    \"\"\"\n",
    "    sum = a\n",
    "    import pdb; pdb.set_trace()\n",
    "    return sum\n",
    "    \n",
    "import doctest\n",
    "doctest.testmod(verbose=True)"
   ],
   "execution_count": 4,
   "outputs": [
    {
     "output_type": "stream",
     "text": [
      "Trying:\n",
      "    add(2, 2)\n",
      "Expecting:\n",
      "    4\n",
      "> <ipython-input-4-c9a7cd1fc273>(9)add()\n",
      "-> return sum\n",
      "(Pdb) sum\n",
      "2\n",
      "(Pdb) q\n",
      "**********************************************************************\n",
      "File \"__main__\", line 4, in __main__.add\n",
      "Failed example:\n",
      "    add(2, 2)\n",
      "Exception raised:\n",
      "    Traceback (most recent call last):\n",
      "      File \"/usr/lib/python3.6/doctest.py\", line 1330, in __run\n",
      "        compileflags, 1), test.globs)\n",
      "      File \"<doctest __main__.add[0]>\", line 1, in <module>\n",
      "        add(2, 2)\n",
      "      File \"<ipython-input-4-c9a7cd1fc273>\", line 9, in add\n",
      "        return sum\n",
      "      File \"<ipython-input-4-c9a7cd1fc273>\", line 9, in add\n",
      "        return sum\n",
      "      File \"/usr/lib/python3.6/doctest.py\", line 379, in trace_dispatch\n",
      "        return pdb.Pdb.trace_dispatch(self, *args)\n",
      "      File \"/usr/lib/python3.6/bdb.py\", line 51, in trace_dispatch\n",
      "        return self.dispatch_line(frame)\n",
      "      File \"/usr/lib/python3.6/bdb.py\", line 70, in dispatch_line\n",
      "        if self.quitting: raise BdbQuit\n",
      "    bdb.BdbQuit\n",
      "1 items had no tests:\n",
      "    __main__\n",
      "**********************************************************************\n",
      "1 items had failures:\n",
      "   1 of   1 in __main__.add\n",
      "1 tests in 2 items.\n",
      "0 passed and 1 failed.\n",
      "***Test Failed*** 1 failures.\n"
     ],
     "name": "stdout"
    },
    {
     "output_type": "execute_result",
     "data": {
      "text/plain": [
       "TestResults(failed=1, attempted=1)"
      ]
     },
     "metadata": {
      "tags": []
     },
     "execution_count": 4
    }
   ]
  }
 ]
}