晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 .
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Current File : //usr/share/doc/perl-Test-Simple/t/Legacy/todo.t
#!perl -w

BEGIN {
    if( $ENV{PERL_CORE} ) {
        chdir 't';
        @INC = '../lib';
    }
}

use Test::More;

plan tests => 36;


$Why = 'Just testing the todo interface.';

my $is_todo;
TODO: {
    local $TODO = $Why;

    fail("Expected failure");
    fail("Another expected failure");

    $is_todo = Test::More->builder->todo;
}

pass("This is not todo");
ok( $is_todo, 'TB->todo' );


TODO: {
    local $TODO = $Why;

    fail("Yet another failure");
}

pass("This is still not todo");


TODO: {
    local $TODO = "testing that error messages don't leak out of todo";

    ok( 'this' eq 'that',   'ok' );

    like( 'this', qr/that/, 'like' );
    is(   'this', 'that',   'is' );
    isnt( 'this', 'this',   'isnt' );

    can_ok('Fooble', 'yarble');
    isa_ok('Fooble', 'yarble');
    use_ok('Fooble');
    require_ok('Fooble');
}


TODO: {
    todo_skip "Just testing todo_skip", 2;

    fail("Just testing todo");
    die "todo_skip should prevent this";
    pass("Again");
}


{
    my $warning;
    local $SIG{__WARN__} = sub { $warning = join "", @_ };
    TODO: {
        # perl gets the line number a little wrong on the first
        # statement inside a block.
        1 == 1;
#line 74
        todo_skip "Just testing todo_skip";
        fail("So very failed");
    }
    is( $warning, "todo_skip() needs to know \$how_many tests are in the ".
                  "block at $0 line 74\n",
        'todo_skip without $how_many warning' );
}

my $builder = Test::More->builder;
my $exported_to = $builder->exported_to;
TODO: {
    $builder->exported_to("Wibble");
    
    local $TODO = "testing \$TODO with an incorrect exported_to()";
    
    fail("Just testing todo");
}

$builder->exported_to($exported_to);

$builder->todo_start('Expected failures');
fail('Testing todo_start()');
ok 0, 'Testing todo_start() with more than one failure';
$is_todo = $builder->todo;
$builder->todo_end;
is $is_todo, 'Expected failures',
  'todo_start should have the correct TODO message';
ok 1, 'todo_end() should not leak TODO behavior';

my @nested_todo;
my ( $level1, $level2 ) = ( 'failure level 1', 'failure_level 2' );
TODO: {
    local $TODO = 'Nesting TODO';
    fail('fail 1');

    $builder->todo_start($level1);
    fail('fail 2');

    push @nested_todo => $builder->todo;
    $builder->todo_start($level2);
    fail('fail 3');

    push @nested_todo => $builder->todo;
    $builder->todo_end;
    fail('fail 4');

    push @nested_todo => $builder->todo;
    $builder->todo_end;
    $is_todo = $builder->todo;
    fail('fail 4');
}
is_deeply \@nested_todo, [ $level1, $level2, $level1 ],
  'Nested TODO message should be correct';
is $is_todo, 'Nesting TODO',
  '... and original TODO message should be correct';

{
    $builder->todo_start;
    fail("testing todo_start() with no message");
    my $reason  = $builder->todo;
    my $in_todo = $builder->in_todo;
    $builder->todo_end;

    is $reason, '', "  todo() reports no reason";
    ok $in_todo,    "  but we're in_todo()";
}

eval {
    $builder->todo_end;
};
is $@, sprintf "todo_end() called without todo_start() at %s line %d.\n", $0, __LINE__ - 3;


{
    my($reason, $in_todo);

    TODO: {
        local $TODO = '';
        $reason  = $builder->todo;
        $in_todo = $builder->in_todo;
    }

    is $reason, '';
    ok !$in_todo, '$TODO = "" is not considered TODO';
}

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