Showing posts from January, 2009

Exobrain Note: Benchmark CGIs under Apache::Registry and without

Exobrain Note
Need to benchmark some of our internal CGIs under Apache::Registry and without to see what the performance gain might be.

I think building a client for the apps with WWW::Mechanize and WWW::Mechanize::Timed would be enough to evaluate the change.

SOAP::Lite and Test::MockModule

IntroAs part of a project to convert an existing SOAP client library over to a new version of calls, I found that I needed a way to test potential faults and new data formats without requiring live calls. After I built it for the new stuff, I used it to test existing calls and errors as well. This code was running live for several years before I needed to change it for the new version, this inspired me to be very careful and invest in testing. On a side note, I found plenty of bugs just creating the test suite in the existing code that had been there for years.
Creating the Test SuiteTo create the test suite, I needed to pretend to get SOAP server responses. I turned to Test::MockModule to step in and provide hooks to return them. I found that mocking these responses were pretty straightforward once I figured out how to use the SOAP::Lite deserializer. (like most things, its easy once you know how)

The following outlines what I did to create the suite, well at least the process of usin…

vim makes me pasty when pasting

For a while its bugged me that when I paste into a vim session with all nice options turned on, it formats the crap out of it. At some point setting set noautoindent stopped fixing this problem.

Thank goodness that I found a solution, it probably exists for years but with vim sometimes knowing the right verbage is the key to a finding how to do it. (its probably been there since version 5.0)

Here is how it works for me:
pre paste - :set paste
paste in code/snippet/sql/guinea pig
:set nopasteMan that makes my life so much easier...

Switch between windows in any application on OS X

To switch between windows in any application on OS X use: cmd - `.
I started to think this was only in Safari but it works with any multi-window OS X app.

A new must use module - Test::Exception

I write quite a few unit tests that have methods or subs that throw exceptions (like most good code should... this rule has numerous good exceptions! hahaha, sorry couldn't resist.). A few months ago I ran across Test::Exception.

In the past I would often write unit tests for these cases like:
my $err;
my $obj;

eval { $obj = MyObject->new; };

## constructor expected to fail
$err = $@;
ok $err, "constructor - missing parameters";

## or for methods that aren't suppose to throw
eval { $obj = MyObject->new( server => 'localhost' ) };

## check constructor
$err = $@;
ok !$err, "constructor";
isa_ok $obj, 'MyObject';
This construct became very tiring, verbose and distracts from what is really going on. (Yuck!)

With Test::Exception, I can convert these annoying eval blocks into nicely contain lines.

Example from above:
use Test::Exception;

my $obj;

throws_ok { $obj = MyObject->new; } qr/Error Message to match/,
'constructor - missing parameters&#…

Vim, Tidy and XML - how to make them work together

I use vim as my main IDE. I found that I often have to muck and view XML. Often this XML is from debugging logs or output that don't add whitespace (and why would they).

The following is my setup for a small vim filetype mapping to automatically clean up xml using HTML tidy. Another great tool.
How To First, You'll need $HOME/.vim and $HOME/.vim/ftplugin directories.

Create them, if they don't exist:
mkdir -p $HOME/.vim/ftplugin
Second, create a new ftplugin for xml.
vim $HOME/.vim/ftplugin/xml.vim
Third, add mapping for tidy (I use F3)
" tidy for xml -q makes it quiet
map <F3> :%! tidy -q -i -xml % <CR>Now when you edit a file with a type of xml, you can press F3 your xml will be tidy'd. This does require that you save the xml file somewhere first (you'll need a valid filename).
I've only used this on UN*Xs OSs
I use vim 7.x, it will probably work on 6
I enable filetype support in my .vimrc with command filetype plugin indent on