Provided by: libtest-routine-perl_0.018-1_all 
NAME
Test::Routine - composable units of assertion
VERSION
version 0.018
SYNOPSIS
# mytest.t
use Test::More;
use Test::Routine;
use Test::Routine::Util;
has fixture => (
is => 'ro',
lazy => 1,
clearer => 'reset_fixture',
default => sub { ...expensive setup... },
);
test "we can use our fixture to do stuff" => sub {
my ($self) = @_;
$self->reset_fixture; # this test requires a fresh one
ok( $self->fixture->do_things, "do_things returns true");
ok( ! $self->fixture->no_op, "no_op returns false");
for my $item ($self->fixture->contents) {
isa_ok($item, 'Fixture::Entry');
}
};
test "fixture was recycled" => sub {
my ($self) = @_;
my $fixture = $self->fixture; # we don't expect a fresh one
is( $self->fixture->things_done, 1, "we have done one thing already");
};
run_me;
done_testing;
DESCRIPTION
Test::Routine is a very simple framework for writing your tests as composable units of
assertion. In other words: roles.
For a walkthrough of tests written with Test::Routine, see Test::Routine::Manual::Demo.
Test::Routine is similar to Test::Class in some ways. These similarities are largely
superficial, but the idea of "tests bound together in reusable units" is a useful one to
understand when coming to Test::Routine. If you are already familiar with Test::Class, it
is the differences rather than the similarities that will be more important to understand.
If you are not familiar with Test::Class, there is no need to understand it prior to using
Test::Routine.
On the other hand, an understanding of the basics of Moose is absolutely essential.
Test::Routine composes tests from Moose classes, roles, and attributes. Without an
understanding of those, you will not be able to use Test::Routine. The Moose::Manual is
an excellent resource for learning Moose, and has links to other online tutorials and
documentation.
The Concepts
The Basics of Using Test::Routine
There actually isn't much to Test::Routine other than the basics. It does not provide
many complex features, instead delegating almost everything to the Moose object system.
Writing Tests
To write a set of tests (a test routine, which is a role), you add "use Test::Routine;" to
your package. "main" is an acceptable target for turning into a test routine, meaning
that you may use Test::Routine in your *.t files in your distribution.
"use"-ing Test::Routine will turn your package into a role that composes
Test::Routine::Common, and will give you the "test" declarator for adding tests to your
routine. Test::Routine::Common adds the "run_test" method that will be called to run each
test.
The "test" declarator is very simple, and will generally be called like this:
test $NAME_OF_TEST => sub {
my ($self) = @_;
is($self->foo, 123, "we got the foo we expected");
...
...
};
This defines a test with a given name, which will be invoked like a method on the test
object (described below). Tests are ordered by declaration within the file, but when
multiple test routines are run in a single test, the ordering of the routines is
undefined.
"test" may also be given a different name for the installed method and the test
description. This isn't usually needed, but can make things clearer when referring to
tests as methods:
test $NAME_OF_TEST_METHOD => { description => $TEST_DESCRIPTION } => sub {
...
}
Each test will be run by the "run_test" method. To add setup or teardown behavior, advice
(method modifiers) may be attached to that method. For example, to call an attribute
clearer before each test, you could add:
before run_test => sub {
my ($self) = @_;
$self->clear_some_attribute;
};
Running Tests
To run tests, you will need to use Test::Routine::Util, which will provide two functions
for running tests: "run_tests" and "run_me". The former is given a set of packages to
compose and run as tests. The latter runs the caller, assuming it to be a test routine.
"run_tests" can be called in several ways:
run_tests( $desc, $object );
run_tests( $desc, \@packages, $arg );
run_tests( $desc, $package, $arg ); # equivalent to ($desc, [$pkg], $arg)
In the first case, the object is assumed to be a fully formed, testable object. In other
words, you have already created a class that composes test routines and have built an
instance of it.
In the other cases, "run_tests" will produce an instance for you. It divides the given
packages into classes and roles. If more than one class was given, an exception is
thrown. A new class is created subclassing the given class and applying the given roles.
If no class was in the list, Moose::Object is used. The new class's "new" is called with
the given $arg (if any).
The composition mechanism makes it easy to run a test routine without first writing a
class to which to apply it. This is what makes it possible to write your test routine in
the "main" package and run it directly from your *.t file. The following is a valid,
trivial use of Test::Routine:
use Test::More;
use Test::Routine;
use Test::Routine::Util;
test demo_test => sub { pass("everything is okay") };
run_tests('our tests', 'main');
done_testing;
In this circumstance, though, you'd probably use "run_me", which runs the tests in the
caller. You'd just replace the "run_tests" line with "run_me;". A description for the
run may be supplied, if you like.
Each call to "run_me" or "run_tests" generates a new instance, and you can call them as
many times, with as many different arguments, as you like. Since Test::Routine can't know
how many times you'll call different test routines, you are responsible for calling
"done_testing" when you're done testing.
Running individual tests
If you only want to run a subset of the tests, you can set the "TEST_METHOD" environment
variable to a regular expression that matches the names of the tests you want to run.
For example, to run just the test named "customer profile" in the "MyTests" class.
use Test::More;
use Test::Routine::Util;
$ENV{TEST_METHOD} = 'customer profile';
run_tests('one test', 'MyTests');
done_testing;
To run all tests with "customer" in the name:
use Test::More;
use Test::Routine::Util;
$ENV{TEST_METHOD}= '.*customer.*';
run_tests('some tests', 'MyTests');
done_testing;
If you specify an invalid regular expression, your tests will not be run:
use Test::More;
use Test::Routine::Util
$ENV{TEST_METHOD} = 'C++'
run_tests('invalid', 'MyTests');
done_testing;
When you run it:
1..0
# No tests run!
not ok 1 - No tests run for subtest "invalid"
AUTHOR
Ricardo Signes <rjbs@cpan.org>
COPYRIGHT AND LICENSE
This software is copyright (c) 2010 by Ricardo Signes.
This is free software; you can redistribute it and/or modify it under the same terms as
the Perl 5 programming language system itself.