NAME
TAP::SimpleOutput - Simple closure-driven TAP generator
VERSION
This document describes version 0.009 of TAP::SimpleOutput - released
February 14, 2017 as part of TAP-SimpleOutput.
SYNOPSIS
use TAP::SimpleOutput 'counter';
my ($_ok, $_nok, $_skip, $_plan) = counters();
say $_ok->('TestClass has a metaclass');
say $_ok->('TestClass is a Moose class');
say $_ok->('TestClass has an attribute named bar');
say $_ok->('TestClass has an attribute named baz');
do {
my ($_ok, $_nok, $_skip, $_plan) = counters(1);
say $_ok->(q{TestClass's attribute baz does TestRole::Two});
say $_ok->(q{TestClass's attribute baz has a reader});
say $_ok->(q{TestClass's attribute baz option reader correct});
say $_plan->();
};
say $_ok->(q{[subtest] checking TestClass's attribute baz});
say $_ok->('TestClass has an attribute named foo');
# STDOUT looks like:
ok 1 - TestClass has a metaclass
ok 2 - TestClass is a Moose class
ok 3 - TestClass has an attribute named bar
ok 4 - TestClass has an attribute named baz
ok 1 - TestClass's attribute baz does TestRole::Two
ok 2 - TestClass's attribute baz has a reader
ok 3 - TestClass's attribute baz option reader correct
1..3
ok 5 - [subtest] checking TestClass's attribute baz
ok 6 - TestClass has an attribute named foo
DESCRIPTION
We provide one function, counters(), that returns a number of simple
closures designed to help output TAP easily and correctly, with a
minimum of fuss.
FUNCTIONS
counters($level)
When called in list context, this function returns a number of closures
that each generate a different type of TAP output. It takes an optional
$level that determines the indentation level (e.g. for subtests). These
coderefs are all closed over the same counter variable that keeps track
of how many test have been run so far; this allows them to always
output the correct test number.
my ($_ok, $_nok, $_skip, $_plan, $_todo, $_freeform) = counters();
$_ok->('whee'); # returns "ok 1 - whee"
$_nok->('boo'); # returns "not ok 2 - boo"
$_skip->('baz'); # returns "ok 3 # skip baz"
$_todo->($_ok->('bip'), 'daleks'); # returns "ok 4 - bip # TODO daleks"
$_plan->(); # returns "1..4"
$_freeform->('yay'); # returns "yay"
Alternatively, when called in scalar context this function returns a
hashref of coderefs:
my $tap = counters();
$tap->{ok}->('whee'); # returns "ok 1 - whee"
$tap->{nok}->('boo'); # returns "not ok 2 - boo"
$tap->{skip}->('baz'); # returns "ok 3 # skip baz"
$tap->{todo}->($tap->{ok}->('bip'), 'daleks'); # returns "ok 4 - bip # TODO daleks"
$tap->{plan}->(); # returns "1..4"
$tap->{freeform}->('yay'); # returns "yay"
Note that calling the $_plan coderef only returns an intelligible
response when called after all the output has been generated; this is
analogous to using Test::More without a declared plan and
done_testing() at the end. If you need or want to specify the plan
prior to running tests, you'll need to do that manually.
subtests
When counter() is passed an integer, the generated closures all indent
themselves appropriately to indicate to the test harness / TAP parser
that a subtest is being run. (Namely, each statement returned is
prefaced with $level * 4 spaces.) It's recommended that you use
distinct lexical scopes for subtests to allow the usage of the same
variable names (why make things difficult?) without clobbering any
existing ones and to ensure that the subtest closures are not
inadvertently used at an upper level.
my ($_ok, $_nok) = counters();
$_ok->('yay!');
$_nok->('boo :(');
do {
my ($_ok, $_nok, $_skip, $_plan) = counters(1);
$_ok->('thing 1 good');
$_ok->('thing 2 good');
$_ok->('thing 3 good');
$_skip->('over there');
$_plan->();
};
$_ok->('subtest passed');
# returns
ok 1 - yay!
not ok 2 - boo :(
ok 1 - thing 1 good
ok 2 - thing 2 good
ok 3 - thing 3 good
ok 4 # skip over there
1..4
ok 3 - subtest passed
counters_as_hashref
Same as counters(), except that we return a hashref rather than a list,
where the keys are "ok", "nok", "skip", "plan", "todo", and "freeform",
and the values are the corresponding coderefs.
counters_and_levelset($level)
Acts as counters(), except returns an additional coderef that can be
used to adjust the level of the counters.
This is not something you're likely to need.
subtest_header_needed()
Returns true if the level of Test::More available will output a subtest
header.
Note that this function will attempt to load Test::More and
Perl::Version. If either of these packages are unavailable, it will
"croak" in Carp.
subtest_header()
Given an output coderef (e.g. the 'freeform' from counters() or
counters_as_hashref()) and a subtest name (that is, a string), we
return a subtest header appropriately indented for the level of
Test::More available.
e.g.
my $out = counters_as_hashref();
say subtest_header $out->{freeform} => 'Our subtest name!';
# given a hashref, look for the coderef in the 'freeform' slot
say subtest_header $out => 'Our subtest name!';
# or with the reviled Test::Builder::Tester:
test_out subtest_header($out => 'Our subtest name!')
if subtest_header_needed;
Returns true if the level of Test::More available will output a subtest
header.
Note that this function will attempt to load Test::More and
Perl::Version. If either of these packages are unavailable, it will
"croak" in Carp.
USAGE WITH Test::Builder::Tester
This package was created from code I was using to make it easier to
test my test packages with Test::Builder::Tester:
test_out $_ok->('TestClass has a metaclass');
test_out $_ok->('TestClass is a Moose class');
test_out $_ok->('TestClass has an attribute named bar');
test_out $_ok->('TestClass has an attribute named baz');
Once I realized I was using the exact same code (perhaps at different
points in time) in multiple packages, the decision to break it out
became pretty easy to make.
SUBTESTS
Subtest formatting can be done by passing an integer "level" parameter
to counter(); see the function's documentation for details.
SEE ALSO
Please see those modules/websites for more information related to this
module.
* Test::Builder::Tester
* TAP::Harness
BUGS
Please report any bugs or feature requests on the bugtracker website
https://github.com/RsrchBoy/tap-simpleoutput/issues
When submitting a bug or request, please include a test-file or a patch
to an existing test-file that illustrates the bug or desired feature.
AUTHOR
Chris Weyl <cweyl@alumni.drew.edu>
I'm a material boy in a material world
Please note I do not expect to be gittip'ed or flattr'ed for this work,
rather it is simply a very pleasant surprise. I largely create and
release works like this because I need them or I find it enjoyable;
however, don't let that stop you if you feel like it ;)
Flattr
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COPYRIGHT AND LICENSE
This software is Copyright (c) 2012 by Chris Weyl.
This is free software, licensed under:
The GNU Lesser General Public License, Version 2.1, February 1999