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          <h1 class="headline">Template::Test</h1>
          <h2 class="subhead">Module for automating TT2 test scripts</h1>
        
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                  <li class=""><a href="#SYNOPSIS">SYNOPSIS</a></li>
                  <li class=""><a href="#DESCRIPTION">DESCRIPTION</a></li>
                  <li class=""><a href="#PACKAGE_SUBROUTINES">PACKAGE SUBROUTINES</a></li>
                  <li class="sub"><a href="#method_text_expect">text_expect()</a></li>
                  <li class="sub"><a href="#method_ntests">ntests()</a></li>
                  <li class="sub"><a href="#method_ok">ok($test)</a></li>
                  <li class="sub"><a href="#method_not_ok">not_ok($test)</a></li>
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                <h1 id="SYNOPSIS" onclick="switch_section(this)" title="Click title to show/hide section content.">SYNOPSIS</h1>
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              <div class="body">
                <pre>use Template::Test;

$Template::Test::DEBUG = 0;   # set this true to see each test running
$Template::Test::EXTRA = 2;   # 2 extra tests follow test_expect()...

# ok() can be called any number of times before test_expect
ok( $true_or_false )

# test_expect() splits $input into individual tests, processes each 
# and compares generated output against expected output
test_expect($input, $template, \%replace );

# $input is text or filehandle (e.g. DATA section after __END__)
test_expect( $text );
test_expect( \*DATA );

# $template is a Template object or configuration hash
my $template_cfg = { ... };
test_expect( $input, $template_cfg );
my $template_obj = Template-&gt;new($template_cfg);
test_expect( $input, $template_obj );

# $replace is a hash reference of template variables
my $replace = {
    a =&gt; 'alpha',
    b =&gt; 'bravo'
};
test_expect( $input, $template, $replace );

# ok() called after test_expect should be declared in $EXTRA (2)
ok( $true_or_false )   
ok( $true_or_false )</pre>
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              </div>
              <div class="body">
                <p>
                      The <code>Template::Test</code> module defines the <a
                      href="#method_test_expect">test_expect()</a> and other related
                      subroutines which can be used to automate test scripts for the Template
                      Toolkit. See the numerous tests in the <i>t</i> sub-directory of the
                      distribution for examples of use.
                    </p>
              </div>
            </div>
            <div class="section">
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                <h1 id="PACKAGE_SUBROUTINES" onclick="switch_section(this)" title="Click title to show/hide section content.">PACKAGE SUBROUTINES</h1>
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                <div class="subsection">
                  <div class="head">
                    <h2 id="method_text_expect" class="method" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">text_expect()</h2>
                    <a href="#body" class="top" title="Back up to the top of the page" >Top</a>
                  </div>
                  <div class="body">
                    <p>
                          The <code>test_expect()</code> subroutine splits an input document into a
                          number of separate tests, processes each one using the Template Toolkit
                          and then compares the generated output against an expected output, also
                          specified in the input document. It generates the familiar
                          <code>ok</code>/<code>not ok</code> output compatible with
                          <code>Test::Harness</code>.
                        </p>
                        <p>
                          The test input should be specified as a text string or a reference to a
                          filehandle (e.g. <code>GLOB</code> or <code>IO::Handle</code>) from which
                          it can be read. In particular, this allows the test input to be placed
                          after the <code>__END__</code> marker and read via the <code>DATA</code>
                          filehandle.
                        </p>
                        <pre>use Template::Test;

test_expect(\*DATA);

__END__
# this is the first test (this is a comment)
-- test --
blah blah blah <span class="tt">[% foo %]</span>
-- expect --
blah blah blah value_of_foo

# here's the second test (no surprise, so is this)
-- test --
more blah blah <span class="tt">[% bar %]</span>
-- expect --
more blah blah value_of_bar</pre>
                        <p>
                          Blank lines between test sections are generally ignored. Any line
                          starting with <code>#</code> is treated as a comment and is ignored.
                        </p>
                        <p>
                          The second and third parameters to <code>test_expect()</code> are
                          optional. The second may be either a reference to a Template object which
                          should be used to process the template fragments, or a reference to a
                          hash array containing configuration values which should be used to
                          instantiate a new Template object.
                        </p>
                        <pre># pass reference to config hash
my $config = {
    INCLUDE_PATH =&gt; '/here/there:/every/where',
    POST_CHOMP   =&gt; 1,
};
test_expect(\*DATA, $config);

# or create Template object explicitly
my $template = Template-&gt;new($config);
test_expect(\*DATA, $template);</pre>
                        <p>
                          The third parameter may be used to reference a hash array of template
                          variable which should be defined when processing the tests. This is
                          passed to the <a href="../../modules/Template.html">Template</a> <a
                          href="../../modules/Template.html#method_process">process()</a> method.
                        </p>
                        <pre>my $replace = {
    a =&gt; 'alpha',
    b =&gt; 'bravo',
};

test_expect(\*DATA, $config, $replace);</pre>
                        <p>
                          The second parameter may be left undefined to specify a default <a
                          href="../../modules/Template.html">Template</a> configuration.
                        </p>
                        <pre>test_expect(\*DATA, undef, $replace);</pre>
                        <p>
                          For testing the output of different <a href="../../modules/Template.html">Template</a> configurations, a reference to a list of named <a
                          href="../../modules/Template.html">Template</a> objects also may be
                          passed as the second parameter.
                        </p>
                        <pre>my $tt1 = Template-&gt;new({ ... });
my $tt2 = Template-&gt;new({ ... });
my @tts = [ one =&gt; $tt1, two =&gt; $tt1 ];</pre>
                        <p>
                          The first object in the list is used by default. Other objects may be
                          switched in with a '<code>-- use $name --</code>' marker. This should
                          immediately follow a '<code>-- test --</code>' line. That object will
                          then be used for the rest of the test, or until a different object is
                          selected.
                        </p>
                        <pre>-- test --
-- use one --
<span class="tt">[% blah %]</span>
-- expect --
blah, blah

-- test --
still using one...
-- expect --
...

-- test --
-- use two --
<span class="tt">[% blah %]</span>
-- expect --
blah, blah, more blah</pre>
                        <p>
                          The <code>test_expect()</code> sub counts the number of tests, and then
                          calls <a href="#method_ntests">ntests()</a> to generate the familiar
                          "<code>1..$ntests\n</code>" test harness line. Each test defined
                          generates two test numbers. The first indicates that the input was
                          processed without error, and the second that the output matches that
                          expected.
                        </p>
                        <p>
                          Additional test may be run before <code>test_expect()</code> by calling
                          <a href="#method_ok">ok()</a>. These test results are cached until <a
                          href="#method_ntests">ntests()</a> is called and the final number of
                          tests can be calculated. Then, the "<code>1..$ntests</code>" line is
                          output, along with "<code>ok $n</code>" / "<code>not ok $n</code>" lines
                          for each of the cached test result. Subsequent calls to <a
                          href="#method_ok">ok()</a> then generate an output line immediately.
                        </p>
                        <pre>my $something = SomeObject-&gt;new();
ok( $something );

my $other = AnotherThing-&gt;new();
ok( $other );

test_expect(\*DATA);</pre>
                        <p>
                          If any tests are to follow after <code>test_expect()</code> is called
                          then these should be pre-declared by setting the <code>$EXTRA</code>
                          package variable. This value (default: <code>0</code>) is added to the
                          grand total calculated by <a href="#method_ntests">ntests()</a>. The
                          results of the additional tests are also registered by calling <a
                          href="#method_ok">ok()</a>.
                        </p>
                        <pre>$Template::Test::EXTRA = 2;

# can call ok() any number of times before test_expect()
ok( $did_that_work );             
ok( $make_sure );
ok( $dead_certain ); 

# &lt;some&gt; number of tests...
test_expect(\*DATA, $config, $replace);

# here's those $EXTRA tests
ok( defined $some_result &amp;&amp; ref $some_result eq 'ARRAY' );
ok( $some_result-&gt;[0] eq 'some expected value' );</pre>
                        <p>
                          If you don't want to call <code>test_expect()</code> at all then you can
                          call <code>ntests($n)</code> to declare the number of tests and generate
                          the test header line. After that, simply call <a
                          href="#method_ok">ok()</a> for each test passing a true or false values
                          to indicate that the test passed or failed.
                        </p>
                        <pre>ntests(2);
ok(1);
ok(0);</pre>
                        <p>
                          If you're really lazy, you can just call <a href="#method_ok">ok()</a>
                          and not bother declaring the number of tests at all. All tests results
                          will be cached until the end of the script and then printed in one go
                          before the program exits.
                        </p>
                        <pre>ok( $x );
ok( $y );</pre>
                        <p>
                          You can identify only a specific part of the input file for testing using
                          the '<code>-- start --</code>' and '<code>-- stop --</code>' markers.
                          Anything before the first '<code>-- start --</code>' is ignored, along
                          with anything after the next '<code>-- stop --</code>' marker.
                        </p>
                        <pre>-- test --
this is test 1 (not performed)
-- expect --
this is test 1 (not performed)

-- start --

-- test --
this is test 2
-- expect --
this is test 2

-- stop --

...</pre>
                  </div>
                </div>    <div class="subsection">
                  <div class="head">
                    <h2 id="method_ntests" class="method" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">ntests()</h2>
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                  </div>
                  <div class="body">
                    <p>
                          Subroutine used to specify how many tests you're expecting to run.
                        </p>
                  </div>
                </div>    <div class="subsection">
                  <div class="head">
                    <h2 id="method_ok" class="method" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">ok($test)</h2>
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                  </div>
                  <div class="body">
                    <p>
                          Generates an "<code>ok $n</code>" or "<code>not ok $n</code>" message if
                          <code>$test</code> is true or false.
                        </p>
                  </div>
                </div>    <div class="subsection">
                  <div class="head">
                    <h2 id="method_not_ok" class="method" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">not_ok($test)</h2>
                    <a href="#body" class="top" title="Back up to the top of the page" >Top</a>
                  </div>
                  <div class="body">
                    <p>
                          The logical inverse of <a href="#method_ok">ok()</a>. Prints an "<code>ok
                          $n</code>" message is <code>$test</code> is <i>false</i> and vice-versa.
                        </p>
                  </div>
                </div>    <div class="subsection">
                  <div class="head">
                    <h2 id="method_callsign" class="method" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">callsign()</h2>
                    <a href="#body" class="top" title="Back up to the top of the page" >Top</a>
                  </div>
                  <div class="body">
                    <p>
                          For historical reasons and general utility, the module also defines a
                          <code>callsign()</code> subroutine which returns a hash mapping the
                          letters <code>a</code> to <code>z</code> to their phonetic alphabet
                          equivalent (e.g. radio callsigns). This is used by many of the test
                          scripts as a known source of variable values.
                        </p>
                        <pre>test_expect(\*DATA, $config, callsign());</pre>
                  </div>
                </div>    <div class="subsection">
                  <div class="head">
                    <h2 id="method_banner" class="method" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">banner()</h2>
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                  <div class="body">
                    <p>
                          This subroutine prints a simple banner including any text passed as
                          parameters. The <code>$DEBUG</code> variable must be set for it to
                          generate any output.
                        </p>
                        <pre>banner('Testing something-or-other');</pre>
                        <p>
                          example output:
                        </p>
                        <pre>#------------------------------------------------------------
# Testing something-or-other (27 tests completed)
#------------------------------------------------------------</pre>
                  </div>
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              </div>
            </div>
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                <h1 id="PACKAGE_VARIABLES" onclick="switch_section(this)" title="Click title to show/hide section content.">PACKAGE VARIABLES</h1>
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                    <h2 id="section__DEBUG" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">$DEBUG</h2>
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                    <p>
                          The $DEBUG package variable can be set to enable debugging mode.
                        </p>
                  </div>
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                  <div class="head">
                    <h2 id="section__PRESERVE" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">$PRESERVE</h2>
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                    <p>
                          The $PRESERVE package variable can be set to stop the test_expect() from
                          converting newlines in the output and expected output into the literal
                          strings '\n'.
                        </p>
                  </div>
                </div>
              </div>
            </div>
            <div class="section">
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                <h1 id="HISTORY" onclick="switch_section(this)" title="Click title to show/hide section content.">HISTORY</h1>
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              </div>
              <div class="body">
                <p>
                      This module started its butt-ugly life as the <code>t/texpect.pl</code>
                      script. It was cleaned up to became the <code>Template::Test</code>
                      module some time around version 0.29. It underwent further cosmetic
                      surgery for version 2.00 but still retains some remarkable rear-end
                      resemblances.
                    </p>
                    <p>
                      Since then the <code>Test::More</code> and related modules have appeared
                      on CPAN making this module mostly, but not entirely, redundant.
                    </p>
              </div>
            </div>
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              <div class="head">
                <h1 id="BUGS_KNOWN_FEATURES_" onclick="switch_section(this)" title="Click title to show/hide section content.">BUGS / KNOWN "FEATURES"</h1>
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              <div class="body">
                <p>
                      Imports all methods by default. This is generally a Bad Thing, but this
                      module is only used in test scripts (i.e. at build time) so a) we don't
                      really care and b) it saves typing.
                    </p>
                    <p>
                      The line splitter may be a bit dumb, especially if it sees lines like
                      <code>-- this --</code> that aren't supposed to be special markers. So
                      don't do that.
                    </p>
              </div>
            </div>
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                <h1 id="AUTHOR" onclick="switch_section(this)" title="Click title to show/hide section content.">AUTHOR</h1>
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                <p>
                      Andy Wardley &lt;abw@wardley.org&gt; <a
                      href="http://wardley.org/">http://wardley.org/</a>
                    </p>
              </div>
            </div>
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              <div class="body">
                <p>
                      Copyright (C) 1996-2007 Andy Wardley. All Rights Reserved.
                    </p>
                    <p>
                      This module is free software; you can redistribute it and/or modify it
                      under the same terms as Perl itself.
                    </p>
              </div>
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                <h1 id="SEE_ALSO" onclick="switch_section(this)" title="Click title to show/hide section content.">SEE ALSO</h1>
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                <p>
                      <a href="../../modules/Template.html">Template</a>
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