Redmine

          lexer =::Rouge::Lexer.guess(:source => text, :filename => filename)

# frozen_string_literal: true

# Redmine - project management software

# Copyright (C) 2006-2017  Jean-Philippe Lang

#

# This program is free software; you can redistribute it and/or

# modify it under the terms of the GNU General Public License

# as published by the Free Software Foundation; either version 2

# of the License, or (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

require File.expand_path('../../../../../test_helper', __FILE__)

class Redmine::SyntaxHighlighting::RougeTest < ActiveSupport::TestCase

  def test_highlight_by_filename_should_distinguish_perl_and_prolog

    raw_perl = <<'RAW_PERL'

#!/usr/bin/perl

print "Hello, world!\n";

RAW_PERL

    expected_perl = <<'EXPECTED_PERL'

<span class="c1">#!/usr/bin/perl</span>

<span class="k">print</span> <span class="s">"Hello, world!\n"</span><span class="p">;</span>

EXPECTED_PERL

    raw_prolog = <<'RAW_PROLOG'

#!/usr/bin/swipl

:- writeln('Hello, world!'),halt.

RAW_PROLOG

    expected_prolog = <<'EXPECTED_PROLOG'

<span class="c1">#!/usr/bin/swipl</span>

<span class="p">:-</span> <span class="ss">writeln</span><span class="p">(</span><span class="ss">'Hello, world!'</span><span class="p">),</span><span class="ss">halt</span><span class="p">.</span>

EXPECTED_PROLOG

    filename = 'hello.pl'

    # Rouge cannot distinguish between Perl and Prolog by filename alone

    assert_raises Rouge::Guesser::Ambiguous do

      Rouge::Lexer.guess(:filename => filename)

    end

    assert_equal Rouge::Lexers::Perl, Rouge::Lexer.guess(:filename => filename, :source => raw_perl)

    assert_equal Rouge::Lexers::Prolog, Rouge::Lexer.guess(:filename => filename, :source => raw_prolog)

    assert_equal expected_perl, Redmine::SyntaxHighlighting::Rouge.highlight_by_filename(raw_perl, filename)

    assert_equal expected_prolog, Redmine::SyntaxHighlighting::Rouge.highlight_by_filename(raw_prolog, filename)

  end

end