Testing Code and Assuring Quality

Testing Code
and Assuring Quality
Learning to use Test::More,
Perl::Critic, and Devel::Cover

Kent Cowgill

Testing Code
and Assuring Quality
•Learn how to write unit tests in perl
•Write tests for your code
•Ensuring your code is high quality
•Ensuring your tests fully exercise your code
•Writing functional tests for your code
•A practical example of creating a test suite
•How to save time and effort (be lazy!)

Testing.
Software testing is the process used to help identify the
correctness, completeness, security, and quality of
developed computer software. Testing is a process of
technical investigation, performed on behalf of
stakeholders, that is intended to reveal quality-related
information about the product with respect to the context
in which it is intended to operate. This includes, but is not
limited to, the process of executing a program or
application with the intent of ﬁnding errors. Quality is not
an absolute; it is value to some person. With that in mind,
testing can never completely establish the correctness of
arbitrary computer software; testing furnishes a criticism
or comparison that compares the state and behavior of
the product against a speciﬁcation.
-- excerpted from http://en.wikipedia.org/wiki/Software_testing

Testing..
In software engineering, a test case is a set of conditions
or variables under which a tester will determine if a
requirement upon an application is partially or fully
satisﬁed.

It may take many test cases to determine that a
requirement is fully satisﬁed. In order to fully test that all
the requirements of an application are met, there must be
at least one test case for each requirement unless a
requirement has sub requirements.

Some methodologies recommend creating at least two
test cases for each requirement. One of them should
perform positive testing of requirement and other should
perform negative testing. -- excerpted from http://en.wikipedia.org/wiki/Test_Case

Testing...
What characterizes a formal, written test case is that there
is a known input and an expected output, which is worked
out before the test is executed.

If the application is created without formal requirements,
then test cases are written based on the accepted normal
operation of programs of a similar class.

-- excerpted from http://en.wikipedia.org/wiki/Test_Case

How can I ﬁnd out
more information about
testing with Perl?

(or anything else you
talk about tonight, since
you don't really cover
anything in great depth?)
(yeah, sorry about that)

Screencast
demonstration
removed
for PDF

How to
write unit
tests in Perl

Test Anything Protocol
(TAP)

• The Test Anything Protocol is a general purpose
format for transmitting the result of test programs to a
thing which interprets and takes action on those
results.

(TAP)
1..N
ok 1 Description # Directive
# Diagnostic
....
ok 47 Description
ok 48 Description
more tests....

(TAP)
1..4
ok 1 - Input file opened
not ok 2 - First line of the input valid
ok 3 - Read the rest of the file
not ok 4 - Summarized correctly # TODO

Test::Simple
• ok( <expression>, <description>);

ok( $num == 30, '$num equals 30' );

ok( $this =~ m/that/, 'this matches that' );

ok( do_it( $param ), 'sub do_it() returns true' );

OUTPUT:

ok 1 - $num equals 30

ok 2 - this matches that

ok 3 - sub do_it() returns true

Test::Simple




OUTPUT:

not ok 1 - $num equals 30

# Failed test '$num equals 30'

# in test.pl at line 10.

Test::Simple




OUTPUT:

not ok 2 - this matches that

# Failed test 'this matches that'


Test::Simple




OUTPUT:

not ok 3 - sub do_it() returns true

# Failed test 'sub do_it() returns true'


Test::More
• is( <got>, <expected>, <description>);

is( $this, $that, 'this is the same as that' );

Test::More


OUTPUT:

ok 1 - this is the same as that

Test::More


OUTPUT:

not ok 1 - this is the same as that

# Failed test 'this is equal to that'

# in test.t at line 10

# got: 'this'

# expected: 'that'

Actual URL: http://pub.langworth.com/perl_test_refcard.pdf

Introducing Prove
PROVE(1) User Contributed Perl Documentation PROVE(1)

NAME
prove -- A command-line tool for running tests

OPTIONS
-d, --debug Includes extra debugging information
-h, --help Display this help
-H, --man Longer manpage for prove
-I Add libraries to @INC, as Perl's -I
-l, --lib Add lib to the path for your tests
-r, --recurse Recursively descend into directories
-s, --shuffle Run the tests in a random order
--timer Print elapsed time after each test file
-v, --verbose Display standard output of test scripts
while running

...

Output:

$ mv testmore.pl testmore.t

$ prove
./testmore....ok
All tests successful.
Files=1, Tests=3, 0 wallclock secs ( 0.02 cusr + 0.01
csys = 0.03 CPU)

$ prove -v
./testmore....ok 1 - this should equal thistoo
ok 2 - this should be thistoo (is)
ok 3 - this should NOT be that (isnt)
1..3
ok
Files=1, Tests=3, 0 wallclock secs ( 0.02 cusr + 0.01
csys = 0.03 CPU)

How Many Tests?
#!/usr/bin/perl

use strict;
use warnings;

use Test::More tests => 3;

# set some testing variables
my $this = quot;thisquot;;
my $thistoo = quot;thisquot;;
my $that = quot;thatquot;;

# now for the tests
ok( $this eq $thistoo, quot;this should equal thistooquot; );
is( $this, $thistoo, quot;this should be thistoo (is)quot; );
isnt( $this, $that, quot;this should NOT be that (isnt)quot; );

How Many Tests?
$ prove -v
./testmore....1..3
ok 1 - this should equal thistoo
ok 2 - this should be thistoo (is)
ok 3 - this should NOT be that (isnt)
ok
Files=1, Tests=3, 0 wallclock secs ( 0.02 cusr + 0.01 csys
= 0.03 CPU)

How Many Tests?
#!/usr/bin/perl

use strict;
use warnings;


# set some testing variables
my $this = quot;thisquot;;
my $thistoo = quot;thisquot;;
my $that = quot;thatquot;;

# now for the tests
ok( $this eq $thistoo, quot;this should equal thistooquot; );
is( $this, $thistoo, quot;this should be thistoo (is)quot; );
isnt( $this, $that, quot;this should NOT be that (isnt)quot; );

How Many Tests?
$ prove -v
testmore....1..4
ok 1 - this equals thistoo
ok 2 - another way to see if this and thistoo are equal
# Looks like you planned 4 tests but only ran 3.
ok 3 - a way to see if this and that are not equal
dubious
Test returned status 255 (wstat 65280, 0xff00)
DIED. FAILED test 4
Failed 1/4 tests, 75.00% okay
Failed Test Stat Wstat Total Fail List of Failed
-------------------------------------------------------------
testmore.t 255 65280 4 24
Failed 1/1 test scripts. 1/4 subtests failed.
= 0.03 CPU)
Failed 1/1 test programs. 1/4 subtests failed.



-s, --shuffle Run the tests in a random order

Your code
compiles, but
does it do the
right thing?

My
problem:
ZFML*
* Name changed to protect the innocent

(btw, what
the heck
is ZFML?)

ZFML is a custom
template system

ZFML is a
mish-mash of HTML
and Perl

ZFML only exists at
AcmeCorp.com*

* Name changed to protect the innocent

I don't think you'd
want it to exist
anywhere else.

ZFML
That looks
<html>
<head><title></title></head>
like HTML
<body>
</body>
</html>

ZFML
That looks
<html>
<head><title></title></head>
like HTML
<body>
</body>
</html>

It only runs
under
mod_perl

$ perl -c index.zfml

Bareword found where operator expected at index.zfml
line 5, near quot;<meta http-equiv=quot;content-typequot;
content=quot;text/htmlquot;
(Might be a runaway multi-line // string starting on line4)
(Missing operator before html?)
String found where operator expected at index.zfml line 6, near
quot;<meta name=quot;quot;
(Might be a runaway multi-line quot;quot; string starting on line 5)
(Missing semicolon on previous line?)
Bareword found where operator expected at index.zfml line 6, near
quot;<meta name=quot;descriptionquot;
(Missing operator before description?)
String found where operator expected at index.zfml line 6, near
quot;descriptionquot; content=quot;quot;
Bareword found where operator expected at index.zfml line 6, near quot;quot;
content=quot;Findquot;
(Missing operator before Find?)
Bareword found where operator expected at index.zfml line 7, near quot;<meta
NAME=quot;keywordsquot;
(Missing operator before keywords?)
String found where operator expected at index.zfml line 7, near quot;keywordsquot; CONTENT=quot;quot;
Bareword found where operator expected at index.zfml line 7, near quot;quot; CONTENT=quot;AcmeCorpquot;
(Missing operator before AcmeCorp?)
Bareword found where operator expected at index.zfml line 7, near quot;time jobsquot;
(Do you need to predeclare time?)
String found where operator expected at index.zfml line 8, near quot;<style type=quot;quot;
Bareword found where operator expected at index.zfml line 8, near quot;<style type=quot;textquot;
(Missing operator before text?)
String found where operator expected at index.zfml line 28, near quot;<div id=quot;quot;
Bareword found where operator expected at index.zfml line 28, near quot;<div id=quot;pageContainerquot;
(Missing operator before pageContainer?)

A Simple Class
#!/usr/bin/perl

use strict;
use warnings;

package myObj;

sub new {
my $class = shift;
my %args = @_;
my $self = {};
$self->{ name } = $args{ name } || 'default';
return bless $self, $class;
}
sub set_name {
my $self = shift;
$self->{ name } = shift;
}
sub get_name {
my $self = shift;
return $self->{ name };
}
1;

A Simple Class
#!/usr/bin/perl

use strict;
use warnings;
Constructor
package myObj; (http://en.wikipedia.org/wiki/Constructor_%28computer_science%29)

sub new {
my $class = shift;
my %args = @_;
my $self = {};
}
sub set_name {
my $self = shift;
}
sub get_name {
my $self = shift;
}
1;

A Simple Class
#!/usr/bin/perl

use strict;
use warnings;
Constructor

sub new {
my $class = shift;
my %args = @_;
my $self = {};
}
Mutator
sub set_name {
my $self = shift;
(http://en.wikipedia.org/wiki/Mutator_method)
}
sub get_name {
my $self = shift;
}
1;

A Simple Class
#!/usr/bin/perl

use strict;
use warnings;
Constructor

sub new {
my $class = shift;
my %args = @_;
my $self = {};
}
Mutator
sub set_name {
my $self = shift;
(http://en.wikipedia.org/wiki/Mutator_method)
}
sub get_name {
Accessor
my $self = shift;
return $self->{ name }; (http://en.wikipedia.org/wiki/Accessor)
}
1;

Using A Simple Class
#!/usr/bin/perl

use strict;
use warnings;

use myObj;

...

#!/usr/bin/perl

use strict;
Calling the
use warnings;

Constructor
use myObj;

my $obj = myObj->new( name => 'My Object' );

...

#!/usr/bin/perl

use strict;
Calling the
use warnings;

Constructor
use myObj;


my $objName = $obj->get_name();

...
Calling the
Accessor

#!/usr/bin/perl

use strict;
Calling the
use warnings;

Constructor
use myObj;


my $objName = $obj->get_name();

my $new_name = 'Your Object' );
Calling the
Accessor
$obj->set_name( $new_name );

Calling the
Mutator

Testing A Simple Class
#!/usr/bin/perl

use strict;
use warnings;

use Test::More

#!/usr/bin/perl

It's ﬁne to start
use strict;
use warnings;
out without a
use Test::More 'no_plan';
testing plan
(number of tests
to run)

#!/usr/bin/perl

use strict;
use warnings;
Make sure
you can

quot;usequot; the
BEGIN { use_ok( 'myObj' ); }

object

#!/usr/bin/perl

use strict;
Make sure you
use warnings;

can instantiate
the object (call
the constructor)
ok( my $obj1 = myObj->new( name => 'test1' ),
quot;can create a myObj specifying valuesquot; );

#!/usr/bin/perl

use strict;
use warnings;


Make sure your
); instantiated
quot;can create a myObj specifying valuesquot;
isa_ok( $obj1, 'myObj' );
object quot;isaquot; type
of object you
created

#!/usr/bin/perl

use strict;
use warnings;




ok( my $obj2 = myObj->new(), quot;can create a myObj not
specifying valuesquot; );
Instantiate
another object

#!/usr/bin/perl

use strict;
use warnings;




Make sure the
new object quot;isaquot;
quot;myObjquot; object

Test using the
#!/usr/bin/perl

mutator of the
use strict;
use warnings;
name property of
the object



ok( $obj2->set_name( 'test1' ), quot;can set namequot; );

#!/usr/bin/perl
Make sure the
use strict;
accessor returns
use warnings;

the value we just

set



ok( 'test1' eq $obj2->get_name(), quot;can get namequot; );

#!/usr/bin/perl
Perform a quot;deepquot;
use strict;
comparison of
use warnings;

the two objects

(created in

), different ways)
ok( my $obj1 = myObj->new( name => 'test1'



is_deeply( $obj1, $obj2, quot;obj1 seems deeply similar to
obj2quot; );

#!/usr/bin/perl

use strict;
use warnings;
Specify the
number of tests
we intend to run




obj2quot; );

Output:
$ prove -v testobj.t
testobj....1..8
ok 1 - use myObj;
ok 2 - can create a myObj specifying values
ok 3 - The object isa myObj
ok 4 - can create a myObj not specifying values
ok 6 - can set name
ok 7 - can get name
ok 8 - obj1 seems deeply similar to obj2
ok
= 0.03 CPU)

Testing Zfml
$ cat testindex.t
...
BEGIN { use_ok( 'index.zfml' ) };
...

$ prove testindex.t
testindex....
# Failed test 'use index.zfml;'
# in testindex.t at line 8.
# Tried to use 'index.zfml'.
# Error: syntax error at (eval 3) line 2, near quot;use index.quot;
# Looks like you failed 1 test of 1.
testindex....dubious
Test returned status 1 (wstat 256, 0x100)
DIED. FAILED test 1
Failed 1/1 tests, 0.00% okay
Failed Test Stat Wstat Total Fail List of Failed
---------------------------------------------------------------------
testindex.t 1 256 1 11
Failed 1/1 test scripts. 1/1 subtests failed.
Files=1, Tests=1, 0 wallclock secs ( 0.03 cusr + 0.01 csys = 0.04
CPU)

Ensuring
your code is
high*
quality**

Introducing
Perl::Critic and perlcritic
Perl::Critic(3) User Contributed Perl Documentation Perl::Critic(3)

NAME
Perl::Critic - Critique Perl source code for best-practices

SYNOPSIS
use Perl::Critic;
my $file = shift;
my $critic = Perl::Critic->new();
my @violations = $critic->critique($file);
print @violations;

DESCRIPTION
Perl::Critic is an extensible framework for creating and
applying coding standards to Perl source code. Essentially, it
is a static source code analysis engine. Perl::Critic is
distributed with a number of Perl::Critic::Policy modules that
attempt to enforce various coding guidelines. Most Policy
modules are based on Damian Conway's book Perl Best Practices.

Introducing
Perl::Critic and perlcritic
PERLCRITIC(1) User Contributed Perl Documentation PERLCRITIC(1)

NAME
quot;perlcriticquot; - Command-line interface to critique Perl source

SYNOPSIS
perlcritic [-12345 | -severity number] [-noprofile | -profile file]
[-top [ number ]] [-include pattern] [-exclude pattern]
[-theme expression] [-verbose number | format] [-list]
[-only | -noonly] [-force | -noforce] [-nocolor] [-Version]
[-help] [-man] [-quiet] [FILE | DIRECTORY | STDIN]

DESCRIPTION
quot;perlcriticquot; is a Perl source code analyzer. It is the
executable front-end to the Perl::Critic engine, which attempts
to identify awkward, hard to read, error-prone, or
unconventional constructs in your code. Most of the rules are
based on Damian Conway's book Perl Best Practices.

Don't worry, it's all
in perldoc.

Working with perlcritic
$ perlcritic -1 myObj.pm
RCS keywords $Id$ not found at line 1, column 1. See page 441 of PBP.
(Severity: 2)
RCS keywords $Revision$, $HeadURL$, $Date$ not found at line 1, column 1. See
page 441 of PBP. (Severity: 2)
RCS keywords $Revision$, $Source$, $Date$ not found at line 1, column 1. See
page 441 of PBP. (Severity: 2)
No quot;VERSIONquot; variable found at line 1, column 1. See page 404 of PBP.
(Severity: 2)
Code is not tidy at line 1, column 1. See page 33 of PBP. (Severity: 1)
Subroutine does not end with quot;returnquot; at line 16, column 1. See page 197 of
PBP. (Severity: 4)

Working with .perlcriticrc
$ cat .perlcriticrc
[-Miscellanea::RequireRcsKeywords]
[-Modules::RequireVersionVar]

Subroutine does not end with quot;returnquot; at line 16, column 1. See page 197 of
PBP. (Severity: 4)


sub set_name {
my $self = shift;
return;
}

Output:
testobject....1..8
# Failed test 'can set name'
# in testobject.t at line 17.
# Looks like you failed 1 test of 8.
ok 1 - use myObj;
not ok 6 - can set name
ok 7 - can get name
= 0.04 CPU)

#!/usr/bin/perl

use strict;
use warnings;



The mutator
shouldn't return
a value!

ok( ! $obj2->set_name( 'test1' ), quot;can set namequot; );

obj2quot; );

Output:
testobj....1..8
ok 1 - use myObj;
ok 6 - can set name
ok 7 - can get name
ok
= 0.03 CPU)

Perl::Critic and Zfml
$ perlcritic -1 index.zfml
Code not contained in explicit package at line 1, column 1.
Violates encapsulation. (Severity: 4)
Code before strictures are enabled at line 1, column 1. See page
429 of PBP. (Severity: 5)
Code before warnings are enabled at line 1, column 1. See page 431
of PBP. (Severity: 4)
Mixed high and low-precedence booleans at line 1, column 1. See page 70
of PBP. (Severity: 4)
Useless interpolation of literal string at line 1, column 23. See page 51 of
PBP. (Severity: 1)
Useless interpolation of literal string at line 1, column 64. See page 51 of PBP.
(Severity: 1)
Useless interpolation of literal string at line 2, column 13. See page 51 of PBP.
(Severity: 1)
Hard tabs used at line 4, column 60. See page 20 of PBP. (Severity: 3)
Code not contained in explicit package at line 5, column 54. Violates encapsulation. (Severity: 4)
Mixed high and low-precedence booleans at line 5, column 54. See page 70 of PBP. (Severity: 4)
Useless interpolation of literal string at line 5, column 72. See page 51 of PBP. (Severity: 1)
Postfix control quot;forquot; used at line 6, column 164. See page 96 of PBP. (Severity: 1)
Mismatched operator at line 34, column 15. Numeric/string operators and operands should match. (Severity: 3)
Mismatched operator at line 34, column 86. Numeric/string operators and operands should match. (Severity: 3)

Working with perltidy
PERLTIDY(1) User Contributed Perl Documentation PERLTIDY(1)

NAME
perltidy - a perl script indenter and reformatter

SYNOPSIS
perltidy [ options ] file1 file2 file3 ...
(output goes to file1.tdy, file2.tdy, ...)
perltidy [ options ] file1 -o outfile
perltidy [ options ] file1 -st >outfile
perltidy [ options ] <infile >outfile

Working with perltidy
$ cat .perltidyrc
-l=78 # Max line width is 78 cols
-i=2 # Indent level is 2 cols
-ci=2 # Continuation indent is 2 cols
-lp # line up parenthesis
-vt=2 # Maximal vertical tightness
-vtc=1 # medium vertical something tightness
-cti=1 # No extra indentation for closing brackets
-pt=1 # Medium parenthesis tightness
-bt=1 # Medium brace tightness
-sbt=1 # Medium square bracket tightness
-bbt=1 # Medium block brace tightness
-nsfs # No space before semicolons
-nolq # Don't outdent long quoted strings
-wbb=quot;% + - * / x != == >= <= =~ !~ < > | & >= < = **= += *= &= <<= &&= -= /= |=
>>= ||= .= %= ^= x=quot;
# Break before all operators
-nsak=quot;my local our if elsif until unless while for foreach return switch case
given whenquot;
-bar
-cab=3
-wrs=quot;! ,quot; # want right space after these tokens
-wls=quot;!quot; # want left space after !

$ perltidy index.zfml

There is no previous '?' to match a ':' on line 4
4: <title>AcmeCorp: Widgets, Gadgets and Doodads</title>
^

5: <meta http-equiv=quot;content-typequot; content=quot;text/html;charset=iso-8 ...
-------------- ^
found bareword where operator expected (previous token underlined)

5: ... ent=quot;text/html;charset=iso-8859-1quot; />
-^
found > where term expected (previous token underlined)

7: <meta NAME=quot;keywordsquot; CONTENT=quot;AcmeCorp, widgets, gadgets ...
---------- ^

9: @import url(/AcmeCorp/templates/gateway85styles.css);
^
found Array where operator expected

Missing ';' above?

------- ^

---------^

Missing ';' above?

to match a ':' on line 14
There is no previous '?'
fix valid */
14: max-height: 140px; /* to
^
Missing ';' above?

15
There is no previous '?' to match a ':' on line
15: padding: 12px; margin-top: 5px; border-top: 1px solid #e0e0e0;
^

^

^

myObj.pm source OK

Ensuring
your tests
fully exercise
your code

Introducing
Devel::Cover
Devel::Cover(3) Perl Documentation Devel::Cover(3)

NAME
Devel::Cover - Code coverage metrics for Perl

SYNOPSIS
perl -MDevel::Cover yourprog args
cover

perl -MDevel::Cover=-db,cover_db,-coverage,statement,time
yourprog args

To test an uninstalled module:

cover -delete
HARNESS_PERL_SWITCHES=-MDevel::Cover make test
cover

Introducing
Devel::Cover
$ perl -MDevel::Cover testobj.t
1..8
ok 1 - use myObj;
... # some Devel::Cover output snipped
ok 6 - can set name
ok 7 - can get name
Devel::Cover: Writing coverage database to /Users/kentcowgill/cover_db/runs/
1169095517.23575.48192
---------------------------- ------ ------ ------ ------ ------ ------ ------
File stmt bran cond sub pod time total
---------------------------- ------ ------ ------ ------ ------ ------ ------
myObj.pm 100.0 n/a 100.0 100.0 n/a 23.5 100.0
testobj.t 100.0 n/a n/a 100.0 n/a 76.5 100.0
Total 100.0 n/a 100.0 100.0 n/a 100.0 100.0
---------------------------- ------ ------ ------ ------ ------ ------ ------

Introducing
cover
$ cover
Reading database from /Users/kentcowgill/cover_db

---------------------------- ------ ------ ------ ------ ------ ------ ------
---------------------------- ------ ------ ------ ------ ------ ------ ------
myObj.pm 100.0 n/a 100.0 100.0 n/a 23.5 100.0
testobj.t 100.0 n/a n/a 100.0 n/a 76.5 100.0
Total 100.0 n/a 100.0 100.0 n/a 100.0 100.0
---------------------------- ------ ------ ------ ------ ------ ------ ------

Writing HTML output to /Users/kentcowgill/cover_db/coverage.html ...
done.

Tweaking
Devel::Cover
Devel::Cover(3) Perl Documentation Devel::Cover(3)

OPTIONS

...

-ignore RE - Set REs of files to ignore
+ignore RE - Append to REs of files to ignore.

Tweaking
Devel::Cover
$ perl -MDevel::Cover=+ignore,.*.t testobj.t
1..8
ok 1 - use myObj;
... # Devel::Cover output snipped
Ignoring packages matching:
/Devel/Cover[./]
.*.t
... # Devel::Cover output snipped
ok 6 - can set name
ok 7 - can get name
Devel::Cover: Writing coverage database to /Users/kentcowgill/cover_db/runs/
1169096938.23619.10353
---------------------------- ------ ------ ------ ------ ------ ------ ------
---------------------------- ------ ------ ------ ------ ------ ------ ------
myObj.pm 100.0 n/a 100.0 100.0 n/a 100.0 100.0
Total 100.0 n/a 100.0 100.0 n/a 100.0 100.0
---------------------------- ------ ------ ------ ------ ------ ------ ------

Tweaking
prove
$ prove -MDevel::Cover=+ignore,.*.t testobj.t

Tweaking
prove
$ prove -MDevel::Cover=+ignore,.*.t testobj.t
Unknown option: M
Unknown option: e
Unknown option: e
Unknown option: :
Unknown option: :
Unknown option: C
Unknown option: o
Unknown option: e
Unknown option: =
Unknown option: +
Unknown option: i
Unknown option: g
Unknown option: n
Unknown option: o
Unknown option: e
Unknown option: ,
Unknown option: .
Unknown option: *
Unknown option: .

Tweaking
prove
$ PERL5OPT=-MDevel::Cover=+ignore,.*.t prove -v testobj.t
testobj....1..8
ok 1 - use myObj;
ok 6 - can set name
ok 7 - can get name
ok
Files=1, Tests=8, 3 wallclock secs ( 3.18 cusr + 0.08 csys = 3.26 CPU)

Tweaking
prove
$ cover

---------------------------- ------ ------ ------ ------ ------ ------ ------
---------------------------- ------ ------ ------ ------ ------ ------ ------
/usr/bin/prove 73.7 43.8 0.0 46.7 n/a 98.0 61.1
myObj.pm 100.0 n/a 100.0 100.0 n/a 2.0 100.0
Total 78.0 43.8 40.0 60.0 n/a 100.0 66.9
---------------------------- ------ ------ ------ ------ ------ ------ ------

Writing HTML output to /Users/kentcowgill/cover_db/coverage.html ...
done.

uh, was
that 'prove'
in there?

Tweaking
prove
$ cover
Reading database from /Users/kentco

---------------------------- ------
File stmt
---------------------------- ------
/usr/bin/prove 73.7
myObj.pm 100.0

Tweaking
prove
$ PERL5OPT=-MDevel::Cover=+ignore,.*.t,+ignore,prove prove -v testobj.t
testobj....1..8
ok 1 - use myObj;
ok 6 - can set name
ok 7 - can get name
ok

Saving Some Typing
$ cat Makefile
OPENCMD = open
BROWSER = /Applications/Safari.app
clean:
cover -delete
test:
prove testobj.t
cover:
make clean
PERL5OPT=-MDevel::Cover=+ignore,.*.t,+ignore,prove make test 2>&1
cover
make report
report:
$(OPENCMD) $(BROWSER) cover_db/coverage.html

Saving Some Typing
$ make cover
make clean
cover -delete
Deleting database /Users/kentcowgill/cover_db
PERL5OPT=-MDevel::Cover=+ignore,.*.t,+ignore,prove make test 2>&1
prove testobj.t
testobj....1..8
testobj....ok
cover

---------------------------- ------ ------ ------ ------ ------ ------ ------
---------------------------- ------ ------ ------ ------ ------ ------ ------
myObj.pm 100.0 n/a 100.0 100.0 n/a 100.0 100.0
Total 100.0 n/a 100.0 100.0 n/a 100.0 100.0
---------------------------- ------ ------ ------ ------ ------ ------ ------

Writing HTML output to /Users/kentcowgill/cover_db/coverage.html ... done.
make report
open /Applications/Safari.app cover_db/coverage.html

Introducing
Test::ZFML
Test::Zfml(3) User Contributed Perl Documentation Test::Zfml(3)

NAME
Test::ZFML - Custom Test:: module built specifically for parsing
ZFML.

DESCRIPTION
Long has it been lamented that AcmeCorp's implementation of ZFML (and
who knows what that really stands for) is unmaintainable, and more
importantly untestable.

No more.

Test::ZFML attempts to make the unparseable parseable, the unmaintain-
able maintainable, and the untestable testable. It does this by
implementing it's own mini ZFML parser and places chunks of ZFML
inside their own package, surrounded by their own subroutines which
have defined inputs and testable outputs.

Using
Test::ZFML
#!/usr/bin/perl

use strict;
use warnings;

use Test::More qw/no_plan/;
use Test::ZFML;
use ZFML;

my $p = ZFML->new();

my $file = q[test.zfml];

load_ok( $file, quot;Loaded ZFML file $filequot; );
parse_ok( $file, quot;Parsed ZFML file $filequot; );
evaluate_ok( $file, quot;Evaluated ZFML file $filequot; );
critique_ok( $file, quot;Critiqued ZFML file $filequot; );

Test::Builder::Module
NAME
Test::Builder::Module - Base class for test
modules

SYNOPSIS
# Emulates Test::Simple
package Your::Module;

my $CLASS = __PACKAGE__;

use base 'Test::Builder::Module';
@EXPORT = qw(ok);

sub ok ($;$) {
my $tb = $CLASS->builder;
return $tb->ok(@_);
}

1;

Test::Builder::Module
NAME
Test::Builder::Module - Base class for test
modules

SYNOPSIS
# Emulates Test::Simple
package Your::Module;

my $CLASS = __PACKAGE__;

use base 'Test::Builder::Module';

Start
@EXPORT = qw(ok);

Here
sub ok ($;$) {
my $tb = $CLASS->builder;
return $tb->ok(@_);
}

1;

Test::ZFML
package Test::ZFML;

use strict;
use warnings;

use Perl::Critic qw/critique/;
use Test::HTML::Lint ();
use Carp;

use lib '/Users/kentcowgill/acmecorp/lib';
use ZFML;

use vars qw/$VERSION @ISA @EXPORT %EXPORT_TAGS $TODO/;

use base q/Test::Builder::Module/;

@EXPORT = qw/load_ok parse_ok evaluate_ok critique_ok
replace_ok contains_ok lacks_ok html_ok/;

Test::ZFML
Standard
package Test::ZFML;

stuff
use strict;
use warnings;

use Perl::Critic qw/critique/;
use Test::HTML::Lint ();
use Carp;

use lib '/Users/kentcowgill/acmecorp/lib';
use ZFML;

use vars qw/$VERSION @ISA @EXPORT %EXPORT_TAGS $TODO/;

use base q/Test::Builder::Module/;

@EXPORT = qw/load_ok parse_ok evaluate_ok critique_ok
replace_ok contains_ok lacks_ok html_ok/;

Test::ZFML

# global regexes
my $includeparse
= qr//s;
my $htmlparse
= qr//s;
my $zfmlparse
= qr/()/s;
my $zfmlextract
= qr//s;

Test::ZFML
Icky
regexes
# global regexes
my $includeparse
= qr//s;
my $htmlparse
= qr//s;
my $zfmlparse
= qr/()/s;
my $zfmlextract
= qr//s;

Test::ZFML
sub load_ok {
my $desc;
( $file_to_test, $desc ) = @_;
_load_file( $file_to_test );
$zfml_filestate = LOADED;
my $tb = Test::ZFML->builder;

# minimal (testable) sanity check, ensures that
# $file_contents has contents
$tb->ok( $file_contents, $desc );
}

Test::ZFML
Load the
ﬁle
sub load_ok {
my $desc;
( $file_to_test, $desc ) = @_;
_load_file( $file_to_test );
$zfml_filestate = LOADED;

# $file_contents has contents
$tb->ok( $file_contents, $desc );
}

Test::ZFML

sub _load_file {
$file_to_test = shift;
_get_contents( $file_contents, $file_to_test );
push @vars, grep { ! /^$(ENV|inp)/ }
$file_contents =~ m/($[A-Z_]+)/g;
return;
}

Test::ZFML

sub _load_file {
$file_to_test = shift;
_get_contents( $file_contents, $file_to_test );
push @vars, grep { ! /^$(ENV|inp)/ }
$file_contents =~ m/($[A-Z_]+)/g;
return;
}

Just does
a slurp

Test::ZFML
sub parse_ok {
my( $file, $p, $desc ) = @_;
croak 'wrong file' if $file ne $file_to_test;
croak 'You must load the file first' if
$zfml_filestate != LOADED;
_parse_file( $p );
$zfml_filestate = PARSED;

# $stuff got stuffed
$tb->ok( $stuff, $desc );
}

Test::ZFML
sub parse_ok {
my( $file, $p, $desc ) = @_;
croak 'You must load the file first' if
$zfml_filestate != LOADED;
_parse_file( $p );
$zfml_filestate = PARSED;

# $stuff got stuffed
$tb->ok( $stuff, $desc );

Parse the
}

ﬁle

Test::ZFML
sub _parse_file {
my( $p ) = @_;

# grab the executable hunks of perl code
my @zfml = $file_contents =~ /$zfmlparse/g;
$file_contents =~ s/$zfmlparse//g;

# grab the hunks that are responsible for templates
my %includes = $file_contents =~ /$includeparse/g;
$file_contents =~ s/$includeparse//g;

# finally, grab the hunks that get turned into HTML
my %zfmlvars = $file_contents =~ /$htmlparse/g;
$file_contents =~ s/$htmlparse//g;

...

Test::ZFML Really
parse it
sub _parse_file {
my( $p ) = @_;

# grab the executable hunks of perl code
my @zfml = $file_contents =~ /$zfmlparse/g;
$file_contents =~ s/$zfmlparse//g;

# grab the hunks that are responsible for templates
my %includes = $file_contents =~ /$includeparse/g;
$file_contents =~ s/$includeparse//g;

# finally, grab the hunks that get turned into HTML
my %zfmlvars = $file_contents =~ /$htmlparse/g;
$file_contents =~ s/$htmlparse//g;

...

Test::ZFML
...

for my $key( keys %includes ){
# process all the include files :)
my $tb = Test::Zfml->builder;
$tb->ok( _get_includes( $key, $includes{ $key },
$file_to_test ),
quot;Included $key file $includes{ $key }quot;
);
}

for my $key( keys %zfmlvars ){
$p->var->{$key} = $zfmlvars{$key};
}

for my $zfml( @zfml ){
if( $zfml =~ m/$zfmlextract/s ) {
push @{ $stuff->{$1} }, { $2 => $3 };
}
}
} # end

Test::ZFML
...

# process all the include files :)
my $tb = Test::Zfml->builder;
$tb->ok( _get_includes( $key, $includes{ $key },
$file_to_test ),
quot;Included $key file $includes{ $key }quot;
);
}

Chug
for my $key( keys %zfmlvars ){
$p->var->{$key} = $zfmlvars{$key};
}

through
for my $zfml( @zfml ){

it
if( $zfml =~ m/$zfmlextract/s ) {
push @{ $stuff->{$1} }, { $2 => $3 };
}
}
} # end

Test::ZFML
sub _get_includes {
my( $name, $file, $fromfile ) = @_;
my $filepath = quot;$webroot/$filequot;;

if( $filepath =~ /$VERSION/ ){
$filepath =~ s/$VERSION/$version/;
}

if( $filepath =~ /$LOCAL/ ){
my $path = $fromfile;
$path =~ s/^.+?/(.+)/[a-z.]+$/$version/$1/;
$filepath =~ s/$LOCAL/$path/;
}

my $tb = Test::ZFML->builder();
$tb->ok( -e $filepath,
quot;Inlude/Template file ($filepath) Existsquot; );

...

Test::ZFML
Process
sub _get_includes {
my( $name, $file, $fromfile ) = @_;
my $filepath = quot;$webroot/$filequot;;

included
if( $filepath =~ /$VERSION/ ){

ﬁles
$filepath =~ s/$VERSION/$version/;
}

if( $filepath =~ /$LOCAL/ ){
my $path = $fromfile;
$path =~ s/^.+?/(.+)/[a-z.]+$/$version/$1/;
$filepath =~ s/$LOCAL/$path/;
}

my $tb = Test::ZFML->builder();
$tb->ok( -e $filepath,
quot;Inlude/Template file ($filepath) Existsquot; );

...

Test::ZFML
...

open( my $tmp, '<', $filepath )
or die quot;can't open include filequot;;
my @file = <$tmp>;
my $contents;
for my $line ( @file ){
$contents .= $line;
if( $line =~ m/$([A-Z]+)s/ ){
eval quot;$testzfml::$1 = 'dummy content'quot;;
}
if( $line =~ m/var->{'([A-Z_]+)'}/ ){
}
}
my %includes = $contents =~ /$includeparse/g;
_get_includes( $key, $includes{ $key }, $file );
}
close( $tmp );
}

Test::ZFML Evaluate,
...

evaluate,
open( my $tmp, '<', $filepath )
or die quot;can't open include filequot;;
my @file = <$tmp>;
evaluate
my $contents;
for my $line ( @file ){
$contents .= $line;
if( $line =~ m/$([A-Z]+)s/ ){
}
if( $line =~ m/var->{'([A-Z_]+)'}/ ){
}
}
my %includes = $contents =~ /$includeparse/g;
_get_includes( $key, $includes{ $key }, $file );
}
close( $tmp );
}

Test::ZFML
sub evaluate_ok {
my( $file, $p, $desc ) = @_;
croak 'You must parse the file first'
if $zfml_filestate != PARSED;
$zfml_filestate = EVALED;

for my $hunk ( keys %{$stuff} ) {
for my $evals ( @{ $stuff->{$hunk} } ) {
for my $var ( keys %{$evals} ) {
_evaluate_code( $p, $hunk, $var,
$evals->{$var}, $file, $desc );
}
}
}

# loads everything into memory for testing
require $_ for @cov_files; ## no critic
}

Test::ZFML
sub evaluate_ok {
my( $file, $p, $desc ) = @_;
croak 'You must parse the file first'
if $zfml_filestate != PARSED;
$zfml_filestate = EVALED;

_evaluate_code( $p, $hunk, $var,
$evals->{$var}, $file, $desc );
}

Really
}
}

evaluate
# loads everything into memory for testing
require $_ for @cov_files; ## no critic

it
}

Test::ZFML
sub _evaluate_code {
my( $p, $eval_init, $name, $hunk, $file, $desc ) = @_;
$file =~ s/.*/(.*)$/$1/;
my $subname = quot;$eval_init$namequot;;
$hunk = _wrap_hunk( $hunk, $subname );
my $filename = quot;$file.$subnamequot;;

# Writing the contents out to a file so I can run
# the tests with Devel::Cover turned on.
open my $cov, '>', quot;.$filenamequot;;
print {$cov} $hunk;
close $cov;
push @cov_files, quot;.$filenamequot;;
eval quot;require '.$filename';quot;; ## no critic
$tb->ok( ! $@, quot;$desc chunk ( $filename ) $@quot; );
eval quot;testzfml::$subname( $p );quot;;
die quot;eval failed - $@quot; if $@;
}

Test::ZFML
sub _evaluate_code {
my( $p, $eval_init, $name, $hunk, $file, $desc ) = @_;
$file =~ s/.*/(.*)$/$1/;
my $filename = quot;$file.$subnamequot;;

# Writing the contents out to a file so I can run
# the tests with Devel::Cover turned on.
open my $cov, '>', quot;.$filenamequot;;

Write
print {$cov} $hunk;
close $cov;

out ﬁles
push @cov_files, quot;.$filenamequot;;
eval quot;require '.$filename';quot;; ## no critic
$tb->ok( ! $@, quot;$desc chunk ( $filename ) $@quot; );

for Code
eval quot;testzfml::$subname( $p );quot;;
die quot;eval failed - $@quot; if $@;
}

Coverage

Test::ZFML
sub _wrap_hunk {
my( $hunk, $subname ) = @_;

# HEREDOCs inside eval aren't recognizable as HEREDOCs.
# This re-quotes HEREDOCs as q()/qq() strings.
if( $hunk =~ m/<</s ) {

# replace all intended quoting chars with an HTML entity
$hunk =~ s/|/|/gs;
$hunk =~ s/=s* # start of an assignment
<< # involving a heredoc
('|quot;) # using a quoting delimiter

(?{ $1 eq q(quot;) ? 'qq' : 'q' })
# which we'll remember in $^R

([A-Z]+) # next the heredoc token
1; # close quoting delimiter
(.*?)n # the heredoc
2 # closing heredoc token
/= $^R|$3|;/gsx; # replace with quoting
}

...

Test::ZFML
sub _wrap_hunk {
my( $hunk, $subname ) = @_;

# HEREDOCs inside eval aren't recognizable as HEREDOCs.
# This re-quotes HEREDOCs as q()/qq() strings.
if( $hunk =~ m/<</s ) {

# replace all intended quoting chars with an HTML entity
$hunk =~ s/|/|/gs;
$hunk =~ s/=s* # start of an assignment
<< # involving a heredoc
('|quot;) # using a quoting delimiter

(?{ $1 eq q(quot;) ? 'qq' : 'q' })

Wrap # which we'll remember in $^R

Heredocs
([A-Z]+) # next the heredoc token
1; # close quoting delimiter
(.*?)n # the heredoc
2 # closing heredoc token
/= $^R|$3|;/gsx; # replace with quoting
}

...

Test::ZFML
...

my $chunk;

# wrap the hunk with its own package, strictures and
# warnings enabled, a sigwarn handler that causes eval
# errors ($@) to throw a test ok() error, and callable via a
# subroutine call.
$chunk = <<quot;EOCquot;;
package testzfml;
use strict;
use warnings;
use ZFML;
BEGIN { $SIG{'__WARN__'} = sub { die $_[0] } } ## no critic
sub $subname {
$hunk
}
1;
EOC

return $chunk;
}

Test::ZFML
...

my $chunk;

# wrap the hunk with its own package, strictures and
# warnings enabled, a sigwarn handler that causes eval
# errors ($@) to throw a test ok() error, and callable via a
# subroutine call.
$chunk = <<quot;EOCquot;;
package testzfml;
use strict;
use warnings;
use ZFML;
BEGIN { $SIG{'__WARN__'} = sub { die $_[0] } } ## no critic
sub $subname {

Wrap it in
$hunk
}

it's own
1;
EOC

namespace
return $chunk;
}

Test::ZFML

sub critique_ok {
my( $file, $desc ) = @_;
_critique_code( $hunk, $var, $evals->{$var}, $desc );
}
}
}
}

Test::ZFML

sub critique_ok {
_critique_code( $hunk, $var, $evals->{$var}, $desc );
}
}
}
}

Critique
it

Test::ZFML
sub _critique_code {
my( $eval_init, $name, $hunk, $desc ) = @_;
my $problems = 0;


for my $violation ( critique( { -severity => 1,
-verbose => 1 }, $hunk ) ){
$tb->ok( ! $violation, quot;Critique problem: $violationquot; );
$problems++;
}
$tb->ok( ! $problems, quot;$desc chunk ( $subname )quot; );
return;
}

Test::ZFML
Report
sub _critique_code {

violations
my( $eval_init, $name, $hunk, $desc ) = @_;
my $problems = 0;


for my $violation ( critique( { -severity => 1,
-verbose => 1 }, $hunk ) ){
$tb->ok( ! $violation, quot;Critique problem: $violationquot; );
$problems++;
}
$tb->ok( ! $problems, quot;$desc chunk ( $subname )quot; );
return;
}

Test::ZFML
sub replace_ok {
my( $file, $p, $desc ) = @_;

for my $var (@vars) {
my $varname = $var;
$varname =~ s/^$//;
my $pname = $p->var->{$varname};
$tb->ok( $p->var->{$varname}, quot;$varname found in $filequot; );
$file_contents =~ s/Q$varE/$pname/g;
}
my %input = %{ $p->input };
$file_contents =~ s/$(input{)'?([A-Za-z_]+)'?}/$$1$2}/g;
eval quot;$file_contents = qq|$file_contents|;quot;;
}

Test::ZFML
Replace
sub replace_ok {
my( $file, $p, $desc ) = @_;

special

for my $var (@vars) {

variables
my $varname = $var;
$varname =~ s/^$//;
my $pname = $p->var->{$varname};
$tb->ok( $p->var->{$varname}, quot;$varname found in $filequot; );
$file_contents =~ s/Q$varE/$pname/g;
}
my %input = %{ $p->input };
$file_contents =~ s/$(input{)'?([A-Za-z_]+)'?}/$$1$2}/g;
eval quot;$file_contents = qq|$file_contents|;quot;;
}

Test::ZFML

sub contains_ok {
my( $file, $p, $regex, $desc ) = @_;
$p->render();
$tb->like( $file_contents, $regex, $desc );
}

Check Test::ZFML
its'
contents
sub contains_ok {
$p->render();
$tb->like( $file_contents, $regex, $desc );
}

Test::ZFML

sub lacks_ok {
$p->render();
$tb->unlike( $file_contents, $regex, $desc );
}

Test::ZFML

sub lacks_ok {
$p->render();
$tb->unlike( $file_contents, $regex, $desc );
}

Make sure it
doesn't have
speciﬁc bits

Test::ZFML

sub html_ok {
Test::HTML::Lint::html_ok( $file_contents, $desc );
return;
}

Test::ZFML
Check the
HTML
sub html_ok {
Test::HTML::Lint::html_ok( $file_contents, $desc );
return;
}

Putting it all together

• Test::More
• prove
• Perl::Critic
• Devel::Cover
• Makeﬁle
• Test::ZFML

The Test File
Screencast
demonstration
removed
for PDF

The Makeﬁle
Kent-Cowgills-Computer(~/acmecorp)$ cat Makefile
OPENCMD = open
BROWSER = /Applications/Safari.app
clean:
cover -delete
test:
prove t/
verbose:
prove -v t/
shuffle:
prove -s t/
cover:
make clean
PERL5OPT=-MDevel::Cover=+ignore,prove,+ignore,lib.*.pm,
+ignore,zfml.t make test
cover
make report
report:
$(OPENCMD) $(BROWSER) cover_db/coverage.html

Running Tests

Kent-Cowgills-Computer(~/acmecorp)$ make test
prove t/
t/artdesign-zfml....ok
t/index-zfml........ok
t/testlogin-zfml....ok
Files=3, Tests=59, 2 wallclock secs ( 1.24 cusr + 0.20 csys =
1.44 CPU)

Test Failure

Kent-Cowgills-Computer(~/acmecorp)$ make test
prove t/
t/artdesign-zfml....ok 1/29
# Failed test 'HTML passes Lint test'
# in /Users/kentcowgill/acmecorp/lib/Test/ZFML.pm at line 136.

Test Code Coverage
Kent-Cowgills-Computer(~/acmecorp)$ make cover
make clean
cover -delete
Deleting database /Users/kentcowgill/acmecorp/cover_db
PERL5OPT=-MDevel::Cover=-ignore,prove,+ignore,lib.*.pm,
+ignore,zfml.t make test
prove t/
t/artdesign-zfml....ok
t/index-zfml........ok
t/testlogin-zfml....ok
Files=3, Tests=59, 22 wallclock secs (18.46 cusr + 0.48 csys =
18.94 CPU)
cover
Reading database from /Users/kentcowgill/acmecorp/cover_db
Devel::Cover: merging data for .artdesign.zfml.EVALCOPYRIGHT_YEAR
into .index.zfml.EVALCOPYRIGHT_YEAR

Test Code Coverage
Continued...
---------------------------- ------ ------ ------ ------ ------ ------ ------
---------------------------- ------ ------ ------ ------ ------ ------ ------
.artdesign.zfml.INITSETUP 100.0 n/a n/a 100.0 n/a 12.9 100.0
.index.zfml.EVALCOPYRIGHT_YEAR 92.3 n/a n/a 100.0 n/a 63.9 94.4
.index.zfml.INITSETUP 100.0 n/a n/a 100.0 n/a 11.5 100.0
.testlogin.zfml.INITFORM 100.0 75.0 n/a 100.0 n/a 11.8 96.0
Total 98.3 75.0 n/a 100.0 n/a 100.0 97.6
---------------------------- ------ ------ ------ ------ ------ ------ ------

Writing HTML output to /Users/kentcowgill/acmecorp/cover_db/
coverage.html ... done.
make report
open /Applications/Safari.app cover_db/coverage.html

Introducing
Test::WWW::Mechanize
Test::WWW::Mechanize(3) Test::WWW::Mechanize(3)

NAME
Test::WWW::Mechanize - Testing-specific WWW::Mechanize subclass

VERSION
Version 1.12

SYNOPSIS
Test::WWW::Mechanize is a subclass of WWW::Mechanize that
incorporates features for web application testing. For example:

$mech->get_ok( $page );
$mech->base_is( 'http://petdance.com/', 'Proper <BASE HREF>' );
$mech->title_is( quot;Invoice Statusquot;, quot;On the invoice pagequot; );
$mech->content_contains( quot;Andy Lesterquot;, quot;My name somewherequot; );
$mech->content_like( qr/(cpan|perl).org/, quot;Link: perl or CPANquot; );

Planetary::DblClick_tag.pm
#!/usr/bin/perl

use strict;
use warnings;

#use Test::More tests => 40;
use Test::WWW::Mechanize;

...

#!/usr/bin/perl

use strict;
use warnings;

#use Test::More tests => 40;
use Test::WWW::Mechanize;

# .fwpwd contains my AcmeCorp user id and password
our( $AcmeCorp_username, $AcmeCorp_password );
require '/Users/kentcowgill/acmecorp/.fwpwd';

# create a new Test::WWW:Mechanize object.
my $ua = Test::WWW::Mechanize->new;

...

...

# first, get the home page
$ua->get_ok( quot;http://test.AcmeCorp.comquot;, quot;Check base URLquot; );

# log in (using kcowgill credentials)
$ua->form_number( 1 );
$ua->field( 'EMAIL_ADDRESS', $AcmeCorp_username );
$ua->field( 'PASSWORD', $AcmeCorp_password );
$ua->click( 'returnLogin' );

# basic sanity check that we're on the right page (/AcmeCorp/my/index)
$ua->content_contains( quot;Hi, Kent!quot;, quot;received greeting messagequot; );

...

...

# grab the iframe src tag
my( $iframe ) = $ua->content =~ m/iframe .*src=quot;([^quot;]+)quot;/;

# make sure it's got the right stuff in it.
like( $iframe, qr/site=fw/,
'got site=fw in iframe src tag' );
like( $iframe, qr/affiliate=fw/,
'got affiliate=fw in iframe src tag' );
like( $iframe, qr/app=(?:my|other)/,
'got app=my in iframe src tag' );

...

$ prove -v dblclick.t
dblclick....ok 1 - Check base URL
ok 2 - received greeting message
ok 3 - got site=ac in iframe src tag
ok 4 - got affiliate=ac in iframe src tag
ok 5 - got app=tango in iframe src tag
ok 6 - got size=160x600 in iframe src tag
ok 7 - got pp=1 in iframe src tag
ok 8 - got path=$ID in iframe src tag
ok 9 - got dcpc=606 in iframe src tag
ok 10 - got ge=2 in iframe src tag
ok 11 - got age=19 in iframe src tag
ok 12 - got widget=14 in iframe src tag
ok 13 - got wango=5 in iframe src tag
ok 14 - got state=30 in iframe src tag
ok 15 - got tango=3.8 in iframe src tag
ok 16 - got doodad=0 in iframe src tag
ok 17 - got gadget=0075 in iframe src tag
ok 18 - got mtfnpy=4 in iframe src tag
...
ok

The VIM Plugin
Screencast
demonstration
removed
for PDF

The Perl Module
Screencast
demonstration
removed
for PDF

References
•Wikipedia:
http://en.wikipedia.org/wiki/Software_testing
http://en.wikipedia.org/wiki/Test_Case

•Testing Reference card:
http://pub.langworth.com/perl_test_refcard.pdf

•Test modules:
http://search.cpan.org/dist/Test-Simple/

•ViM script:
http://www.vim.org/scripts/script.php?script_id=1985

•Test::StubGenerator:
http://search.cpan.org/dist/Test-StubGenerator/

•Screencast software (Mac only):
http://www.ambrosiasw.com/utilities/snapzprox/

•Cats:
http://icanhascheezburger.com/

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