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The app or system under test

The Ideal Sample Application Under Test (AUT)

The ideal sample app would be built on code which:

  1. provides responsive web, native mobile (iOS and Android), plus APIs.
  2. is open sourced (e.g., available on github).
  3. makes use of open sourced libraries and tools (java).
  4. is accompanied by tutorials on its construction.
  5. contain coding that returns errors when optionally switched on (for validating test code).
  6. exihibits various approaches (pooling, multi-threading) so that performance can be compared.

Apps currently used for tutorials, benchmarking, and pre-sales do not meet all the criteria above.

  • WebTours used in most JMeter tutorials to date (within commerical performance testing software LoadRunner) returns errors based on a switch, but its source is not available to the public.
## Candidate apps under test Various people have created
  • As part of the JMeter Book
## The 99 bottles app under test

Unlike other tutorials that only scratches the surface, let's look at a JMeter test plan that has scripting logic often needed.

  1. Open an internet browser to https://github.com/wilsonmar/99bottles-jmeter which was forked from https://github.com/groodt/99bottles-jmeter (dated November, 2011 and not updated since).

  2. Click Download ZIP to obtain file name ending with -master.zip then unzip. Or use git to clone the repo locally.

  3. Copy the repo's path to the Clipboard.

On a Mac Finder window opened to the repo stored locally, right-click on requirements.txt and select Get Info. Double-click on "99bottles" within the Where: text until the whole path is highlighted. Press command+C to store the highlighted string in the Clipboard.

  1. Open a command or Terminal window.

  2. Type cd and paste the Clipboard containing the path to the "99bottles" repo folder on your local drive. For example:

/Users/wilsonmar/Downloads/99bottles-jmeter-master

  1. View files by typing ls then Enter. The response:

README.md jmeter.log
Test Plan.jmx requirements.txt server.py


7) In a browser specify URL http://tech.mindcandy.com/2011/11/99-bottles-of-jmeter-on-the-wall/
for the blog which describes the repo.


## <a name="SetupServerUnderTest"> Setup Python Server Under Test</a>
The env1 folder contains a <strong>server.py</strong> Python script.
So the Python package installer (pip) needs to be installed.

1) Install pip. On PCs see http://tylerbutler.com/2012/05/how-to-install-python-pip-and-virtualenv-on-windows-with-powershell/
which makes use of a Powershell clone of the unix scripts.
On Macs:

sudo easy_install pip


The response:

Password: Searching for pip Best match: pip 8.0.0 Adding pip 8.0.0 to easy-install.pth file Installing pip script to /Users/wmar/anaconda/bin Installing pip3.5 script to /Users/wmar/anaconda/bin Installing pip3 script to /Users/wmar/anaconda/bin

Using /Users/wmar/anaconda/lib/python2.7/site-packages Processing dependencies for pip Finished processing dependencies for pip


2) Create a virtualenv for Python. 
(as described in the "99 Bottles of JMeter on the wall" website
http://tech.mindcandy.com/2011/11/99-bottles-of-jmeter-on-the-wall )

pip install virtualenv


The response:

Collecting virtualenv Downloading virtualenv-14.0.1-py2.py3-none-any.whl (1.8MB) 100% |████████████████████████████████| 1.8MB 151kB/s Installing collected packages: virtualenv Successfully installed virtualenv-14.0.1



3) Use virtualenv to install virtualenvwrapper:
(based on http://virtualenvwrapper.readthedocs.org/en/latest/)

sudo pip install virtualenvwrapper


4) Create environment variable $WORKON_HOME. On PCs, it's at `c:\python27\lib\site-packages`
On Macs:

export WORKON_HOME=~/Envs mkdir -p $WORKON_HOME echo $WORKON_HOME ls $WORKON_HOME source /usr/local/bin/virtualenvwrapper.sh


5) Make custom virtual environment:

cd to where your 99bottles is installed mkvirtualenv env1 mkvirtualenv 99bottles --no-site-packages


The response:

New python executable in 99bottles/bin/python Installing setuptools, pip...done. (env1)


6) Install dependencies:

cd 99bottles-jmeter pip install --requirement=requirements.txt


7) Invoke server:

./server.py


The response:

Bottle server starting up (using PasteServer())... Listening on http://localhost:9999/ Use Ctrl-C to quit.

serving on http://127.0.0.1:9999


Stopping the command/terminal window stops the app server.


## <a name="ExamineAppCode"> Examine Sample App Code</a>
7) Open in a text editor utility the <strong>server.py</strong> application code.
  The print() function outputs should look like this:

25 bottles of mead on the wall. Date=1436066062941 Thread=0 127.0.0.1 - - [04/Jul/2015:21:14:22 -0600] "POST /bottle HTTP/1.1" 200 7 "-" "Apache-HttpClient/4.2.6 (java 1.5)"


In this example, the date 1436066062941 is a Unix Epoch of seconds since Jan. 1, 1970.