iterators.t revision 1.1.1.1 
1#!/usr/bin/perl -w
2
3use strict;
4use lib 't/lib';
5
6use Test::More tests => 76;
7
8use File::Spec;
9use TAP::Parser;
10use TAP::Parser::IteratorFactory;
11use Config;
12
13sub array_ref_from {
14    my $string = shift;
15    my @lines = split /\n/ => $string;
16    return \@lines;
17}
18
19# we slurp __DATA__ and then reset it so we don't have to duplicate our TAP
20my $offset = tell DATA;
21my $tap = do { local $/; <DATA> };
22seek DATA, $offset, 0;
23
24my $did_setup    = 0;
25my $did_teardown = 0;
26
27my $setup    = sub { $did_setup++ };
28my $teardown = sub { $did_teardown++ };
29
30package NoForkProcess;
31use vars qw( @ISA );
32@ISA = qw( TAP::Parser::Iterator::Process );
33
34sub _use_open3 {return}
35
36package main;
37
38my @schedule = (
39    {   name     => 'Process',
40        subclass => 'TAP::Parser::Iterator::Process',
41        source   => {
42            command => [
43                $^X,
44                File::Spec->catfile(
45                    't',
46                    'sample-tests',
47                    'out_err_mix'
48                )
49            ],
50            merge    => 1,
51            setup    => $setup,
52            teardown => $teardown,
53        },
54        after => sub {
55            is $did_setup,    1, "setup called";
56            is $did_teardown, 1, "teardown called";
57        },
58        need_open3 => 15,
59    },
60    {   name     => 'Array',
61        subclass => 'TAP::Parser::Iterator::Array',
62        source   => array_ref_from($tap),
63    },
64    {   name     => 'Stream',
65        subclass => 'TAP::Parser::Iterator::Stream',
66        source   => \*DATA,
67    },
68    {   name     => 'Process (Perl -e)',
69        subclass => 'TAP::Parser::Iterator::Process',
70        source =>
71          { command => [ $^X, '-e', 'print qq/one\ntwo\n\nthree\n/' ] },
72    },
73    {   name     => 'Process (NoFork)',
74        subclass => 'TAP::Parser::Iterator::Process',
75        class    => 'NoForkProcess',
76        source =>
77          { command => [ $^X, '-e', 'print qq/one\ntwo\n\nthree\n/' ] },
78    },
79);
80
81sub _can_open3 {
82    return $Config{d_fork};
83}
84
85my $factory = TAP::Parser::IteratorFactory->new;
86for my $test (@schedule) {
87    SKIP: {
88        my $name       = $test->{name};
89        my $need_open3 = $test->{need_open3};
90        skip "No open3", $need_open3 if $need_open3 && !_can_open3();
91        my $subclass = $test->{subclass};
92        my $source   = $test->{source};
93        my $class    = $test->{class};
94        my $iter
95          = $class
96          ? $class->new($source)
97          : $factory->make_iterator($source);
98        ok $iter,     "$name: We should be able to create a new iterator";
99        isa_ok $iter, 'TAP::Parser::Iterator',
100          '... and the object it returns';
101        isa_ok $iter, $subclass, '... and the object it returns';
102
103        can_ok $iter, 'exit';
104        ok !defined $iter->exit,
105          "$name: ... and it should be undef before we are done ($subclass)";
106
107        can_ok $iter, 'next';
108        is $iter->next, 'one', "$name: next() should return the first result";
109
110        is $iter->next, 'two',
111          "$name: next() should return the second result";
112
113        is $iter->next, '', "$name: next() should return the third result";
114
115        is $iter->next, 'three',
116          "$name: next() should return the fourth result";
117
118        ok !defined $iter->next,
119          "$name: next() should return undef after it is empty";
120
121        is $iter->exit, 0,
122          "$name: ... and exit should now return 0 ($subclass)";
123
124        is $iter->wait, 0, "$name: wait should also now return 0 ($subclass)";
125
126        if ( my $after = $test->{after} ) {
127            $after->();
128        }
129    }
130}
131
132{
133
134    # coverage tests for the ctor
135
136    my $stream = $factory->make_iterator( IO::Handle->new );
137
138    isa_ok $stream, 'TAP::Parser::Iterator::Stream';
139
140    my @die;
141
142    eval {
143        local $SIG{__DIE__} = sub { push @die, @_ };
144
145        $factory->make_iterator( \1 );    # a ref to a scalar
146    };
147
148    is @die, 1, 'coverage of error case';
149
150    like pop @die, qr/Can't iterate with a SCALAR/,
151      '...and we died as expected';
152}
153
154{
155
156    # coverage test for VMS case
157
158    my $stream = $factory->make_iterator(
159        [   'not ',
160            'ok 1 - I hate VMS',
161        ]
162    );
163
164    is $stream->next, 'not ok 1 - I hate VMS',
165      'coverage of VMS line-splitting case';
166
167    # coverage test for VMS case - nothing after 'not'
168
169    $stream = $factory->make_iterator(
170        [   'not ',
171        ]
172    );
173
174    is $stream->next, 'not ', '...and we find "not" by itself';
175}
176
177SKIP: {
178    skip "No open3", 4 unless _can_open3();
179
180    # coverage testing for TAP::Parser::Iterator::Process ctor
181
182    my @die;
183
184    eval {
185        local $SIG{__DIE__} = sub { push @die, @_ };
186
187        $factory->make_iterator( {} );
188    };
189
190    is @die, 1, 'coverage testing for TPI::Process';
191
192    like pop @die, qr/Must supply a command to execute/,
193      '...and we died as expected';
194
195    my $parser = $factory->make_iterator(
196        {   command => [
197                $^X,
198                File::Spec->catfile( 't', 'sample-tests', 'out_err_mix' )
199            ],
200            merge => 1,
201        }
202    );
203
204    is $parser->{err}, '',    'confirm we set err to empty string';
205    is $parser->{sel}, undef, '...and selector to undef';
206
207    # And then we read from the parser to sidestep the Mac OS / open3
208    # bug which frequently throws an error here otherwise.
209    $parser->next;
210}
211__DATA__
212one
213two
214
215three
216