Demo of installing and using the %runtests magic.

runtests-demo.ipynb

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 "metadata": {
  "name": "runtests-demo"
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   "cells": [
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "%install_ext https://raw.github.com/gist/4013594/runtests.py"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Installed runtests.py. To use it, type:\n",
        "  %load_ext runtests\n"
       ]
      }
     ],
     "prompt_number": 1
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "%load_ext runtests"
     ],
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     "metadata": {},
     "outputs": [],
     "prompt_number": 2
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "%runtests"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Collected 0 tests.\n",
        "\n",
        "\n",
        "Ran 0 tests in 9.54e-07 seconds.\n",
        "ok = 0, fail = 0, error = 0\n"
       ]
      }
     ],
     "prompt_number": 3
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "def test_true():\n",
      "    assert 4 == 4\n",
      "\n",
      "def test_fail():\n",
      "    assert 4 == 2"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [],
     "prompt_number": 4
    },
    {
     "cell_type": "code",
     "collapsed": false,
     "input": [
      "%runtests"
     ],
     "language": "python",
     "metadata": {},
     "outputs": [
      {
       "output_type": "stream",
       "stream": "stdout",
       "text": [
        "Collected 2 tests.\n",
        "\n",
        "test_fail ...  fail\n",
        "test_true ...  ok\n",
        "\n",
        "Failures\n",
        "========\n",
        "test_fail: AssertionError()\n",
        "\n",
        "Ran 2 tests in 8.7e-05 seconds.\n",
        "ok = 1, fail = 1, error = 0\n"
       ]
      }
     ],
     "prompt_number": 5
    },
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