File Coverage

blib/lib/Test/Unit/TestSuite.pm

Criterion	Covered	Total	%
statement	94	121	77.6
branch	20	30	66.6
condition	11	17	64.7
subroutine	16	22	72.7
pod	6	15	40.0
total	147	205	71.7

package Test::Unit::TestSuite;
use strict;

=head1 NAME

Test::Unit::TestSuite - unit testing framework base class

=cut

use base 'Test::Unit::Test';

use Carp;

use Test::Unit::Debug qw(debug);
use Test::Unit::TestCase;
use Test::Unit::Loader;
use Test::Unit::Warning;

=head1 SYNOPSIS

    package MySuite;

    use base qw(Test::Unit::TestSuite);

    sub name { 'My very own test suite' }
    sub include_tests { qw(MySuite1 MySuite2 MyTestCase1 ...) }

This is the easiest way of building suites; there are many more.  Read on ...

=head1 DESCRIPTION

This class provides the functionality for building test suites in
several different ways.

Any module can be a test suite runnable by the framework if it
provides a C method which returns a C
object, e.g.

    use Test::Unit::TestSuite;

    # more code here ...

    sub suite {
	my $class = shift;

	# Create an empty suite.
	my $suite = Test::Unit::TestSuite->empty_new("A Test Suite");
	# Add some tests to it via $suite->add_test() here

	return $suite;
    }

This is useful if you want your test suite to be contained in the module
it tests, for example.

Alternatively, you can have "standalone" test suites, which inherit directly
from C, e.g.:

    package MySuite;

    use base qw(Test::Unit::TestSuite);

    sub new {
        my $class = shift;
        my $self = $class->SUPER::empty_new();
        # Build your suite here
        return $self;
    }

    sub name { 'My very own test suite' }

or if your C is going to do nothing more interesting than add
tests from other suites and testcases via C, you can use the
C method as shorthand:

    package MySuite;

    use base qw(Test::Unit::TestSuite);

    sub name { 'My very own test suite' }
    sub include_tests { qw(MySuite1 MySuite2 MyTestCase1 ...) }

This is the easiest way of building suites.

=head1 CONSTRUCTORS

=head2 empty_new ([NAME])

    my $suite = Test::Unit::TestSuite->empty_new('my suite name');

Creates a fresh suite with no tests.

=cut

sub empty_new {
    my $this = shift;
    my $classname = ref $this || $this;
    my $name = shift || '';

    my $self = {
        _Tests => [],
        _Name => $name,
    };
    bless $self, $classname;

    debug(ref($self), "::empty_new($name) called\n");
    return $self;
}

=head2 new ([ CLASSNAME | TEST ])

If a test suite is provided as the argument, it merely returns that
suite.  If a test case is provided, it extracts all test case methods
from the test case (see L) into a new
test suite.

If the class this method is being run in has an C method
which returns an array of class names, it will also automatically add
the tests from those classes into the newly constructed suite object.

=cut

sub new {
    my $class = shift;
    my $classname = shift || ''; # Avoid a warning
    debug("$class\::new($classname) called\n");

    my $self = $class->empty_new();

    if ($classname) {
        Test::Unit::Loader::compile_class($classname);
        if (eval { $classname->isa('Test::Unit::TestCase') }) {
            $self->{_Name} = "suite extracted from $classname";
            my @testcases = Test::Unit::Loader::extract_testcases($classname);
            foreach my $testcase (@testcases) {
                $self->add_test($testcase);
            }
        }
        elsif (eval { $classname->can('suite') }) {
            return $classname->suite();
        }
        else {
            my $error = "Class $classname was not a test case or test suite.\n";
            #$self->add_warning($error);
            die $error;
        }
    }

    if ($self->can('include_tests')) {
        foreach my $test ($self->include_tests()) {
            $self->add_test($test);
        }
    }

    return $self;
}

=head1 METHODS

=cut

sub suite {
    my $class = shift;
    croak "suite() is not an instance method" if ref $class;
    $class->new(@_);
}

=head2 name()

Returns the suite's human-readable name.

=cut

sub name {
    my $self = shift;
    croak "Override name() in subclass to set name\n" if @_;
    return $self->{_Name};
}

=head2 names()

Returns an arrayref of the names of all tests in the suite.

=cut

sub names {
    my $self = shift;
    my @test_list = @{$self->tests};
    return [ map {$_->name} @test_list ] if @test_list;
}

=head2 list (SHOW_TESTCASES)

Produces a human-readable indented lists of the suite and the subsuites
it contains.  If the first parameter is true, also lists any testcases
contained in the suite and its subsuites.

=cut

sub list {
    my $self = shift;
    my $show_testcases = shift;
    my $first = ($self->name() || 'anonymous Test::Unit::TestSuite');
    $first .= " - " . ref($self) unless ref($self) eq __PACKAGE__;
    $first .= "\n";
    my @lines = ( $first );
    foreach my $test (@{ $self->tests() }) {
        push @lines, map "   $_", @{ $test->list($show_testcases) };
    }
    return \@lines;
}

=head2 add_test (TEST_CLASSNAME | TEST_OBJECT)

You can add a test object to a suite with this method, by passing
either its classname, or the object itself as the argument.

Of course, there are many ways of getting the object too ...

    # Get and add an existing suite.
    $suite->add_test('MySuite1');

    # This is exactly equivalent:
    $suite->add_test(Test::Unit::TestSuite->new('MySuite1'));

    # So is this, provided MySuite1 inherits from Test::Unit::TestSuite.
    use MySuite1;
    $suite->add_test(MySuite1->new());

    # Extract yet another suite by way of suite() method and add it to
    # $suite.
    use MySuite2;
    $suite->add_test(MySuite2->suite());

    # Extract test case methods from MyModule::TestCase into a
    # new suite and add it to $suite.
    $suite->add_test(Test::Unit::TestSuite->new('MyModule::TestCase'));

=cut

sub add_test {
    my $self = shift;
    my ($test) = @_;
    debug('+ ', ref($self), "::add_test($test) called\n");
    $test = Test::Unit::Loader::load_test($test) unless ref $test;
    croak "`$test' could not be interpreted as a Test::Unit::Test object"
        unless eval { $test->isa('Test::Unit::Test') };
    push @{$self->tests}, $test;
}

sub count_test_cases {
    my $self = shift;
    my $count;
    $count += $_->count_test_cases for @{$self->tests};
    return $count;
}

sub run {
    my $self = shift;
    my ($result, $runner) = @_;

    debug("$self\::run($result, ", $runner || 'undef', ") called\n");

    $result ||= create_result();
    $result->tell_listeners(start_suite => $self);

    $self->add_warning("No tests found in " . $self->name())
        unless @{ $self->tests() };

    for my $t (@{$self->tests()}) {
        if ($runner && $self->filter_test($runner, $t)) {
            debug(sprintf "+ skipping '%s'\n", $t->name());
            next;
        }
        debug(sprintf "+ didn't skip '%s'\n", $t->name());

        last if $result->should_stop();
        $t->run($result, $runner);
    }

    $result->tell_listeners(end_suite => $self);

    return $result;
}

sub filter_test {
    my $self = shift;
    my ($runner, $test) = @_;

    debug(sprintf "checking whether to filter '%s'\n", $test->name);

    my @filter_tokens = $runner->filter();

    foreach my $token (@filter_tokens) {
        my $filtered = $test->filter_method($token);
        debug("  - by token $token? ", $filtered ? 'yes' : 'no', "\n");
        return 1 if $filtered;
    }

    return 0;
}

sub test_at {
    my $self = shift;
    my ($index) = @_;
    return $self->tests()->[$index];
}

sub test_count {
    my $self = shift;
    return scalar @{$self->tests()};
}

sub tests {
    my $self = shift;
    return $self->{_Tests};
}

sub to_string {
    my $self = shift;
    return $self->name();
}

sub add_warning {
    my $self = shift;
    $self->add_test(Test::Unit::Warning->new(join '', @_));
}

1;
__END__