mirror of
https://github.com/donnemartin/data-science-ipython-notebooks.git
synced 2024-03-22 13:30:56 +08:00
196 lines
4.4 KiB
Python
196 lines
4.4 KiB
Python
{
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"cells": [
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"This notebook was prepared by [Donne Martin](http://donnemartin.com). Source and license info is on [GitHub](https://github.com/donnemartin/data-science-ipython-notebooks)."
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"# Nose Unit Tests with IPython Notebook"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"## Nose\n",
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"\n",
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"Testing is a vital part of software development. Nose extends unittest to make testing easier."
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"## Install Nose\n",
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"\n",
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"Run the following command line:"
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"metadata": {
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"collapsed": false
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},
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"outputs": [],
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"source": [
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"!pip install nose"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"## Create the Code\n",
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"\n",
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"Save your code to a file with the %%file magic:"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 1,
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"metadata": {
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"collapsed": false
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},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"Overwriting type_util.py\n"
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]
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}
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],
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"source": [
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"%%file type_util.py\n",
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"class TypeUtil:\n",
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"\n",
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" @classmethod\n",
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" def is_iterable(cls, obj):\n",
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" \"\"\"Determines if obj is iterable.\n",
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"\n",
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" Useful when writing functions that can accept multiple types of\n",
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" input (list, tuple, ndarray, iterator). Pairs well with\n",
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" convert_to_list.\n",
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" \"\"\"\n",
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" try:\n",
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" iter(obj)\n",
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" return True\n",
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" except TypeError:\n",
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" return False\n",
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"\n",
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" @classmethod\n",
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" def convert_to_list(cls, obj):\n",
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" \"\"\"Converts obj to a list if it is not a list and it is iterable, \n",
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" else returns the original obj.\n",
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" \"\"\"\n",
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" if not isinstance(obj, list) and cls.is_iterable(obj):\n",
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" obj = list(obj)\n",
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" return obj\n"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"## Create the Nose Tests\n",
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"\n",
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"Save your test to a file with the %%file magic:"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 2,
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"metadata": {
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"collapsed": false
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},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"Overwriting tests/test_type_util.py\n"
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]
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}
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],
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"source": [
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"%%file tests/test_type_util.py\n",
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"from nose.tools import assert_equal\n",
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"from ..type_util import TypeUtil\n",
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"\n",
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"\n",
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"class TestUtil():\n",
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"\n",
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" def test_is_iterable(self):\n",
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" assert_equal(TypeUtil.is_iterable('foo'), True)\n",
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" assert_equal(TypeUtil.is_iterable(7), False)\n",
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"\n",
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" def test_convert_to_list(self):\n",
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" assert_equal(isinstance(TypeUtil.convert_to_list('foo'), list), True)\n",
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" assert_equal(isinstance(TypeUtil.convert_to_list(7), list), False)"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"## Run the Nose Tests\n",
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"\n",
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"Run the following command line:"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 3,
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"metadata": {
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"collapsed": false
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},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"core.tests.test_type_util.TestUtil.test_convert_to_list ... ok\r\n",
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"core.tests.test_type_util.TestUtil.test_is_iterable ... ok\r\n",
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"\r\n",
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"----------------------------------------------------------------------\r\n",
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"Ran 2 tests in 0.001s\r\n",
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"\r\n",
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"OK\r\n"
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]
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}
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],
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"source": [
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"!nosetests tests/test_type_util.py -v"
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]
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}
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],
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"metadata": {
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"kernelspec": {
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"display_name": "Python 2",
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"language": "python",
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"name": "python2"
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},
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"language_info": {
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"codemirror_mode": {
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"name": "ipython",
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"version": 2
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},
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"file_extension": ".py",
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"mimetype": "text/x-python",
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"name": "python",
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"nbconvert_exporter": "python",
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"pygments_lexer": "ipython2",
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"version": "2.7.10"
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}
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},
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"nbformat": 4,
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"nbformat_minor": 0
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}
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