# encoding: utf-8
#--
#   Copyright (C) 2012 Gitorious AS
#   Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies)
#
#   This program is free software: you can redistribute it and/or modify
#   it under the terms of the GNU Affero General Public License as published by
#   the Free Software Foundation, either version 3 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 Affero General Public License for more details.
#
#   You should have received a copy of the GNU Affero General Public License
#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
#++

require "test_helper"

class BlobsHelperTest < ActionView::TestCase
  include ERB::Util

  def included_modules
    (class << self; self; end).send(:included_modules)
  end

  should "includes the RepostoriesHelper" do
    assert included_modules.include?(RepositoriesHelper)
  end

  should "includes the TreesHelper" do
    assert included_modules.include?(TreesHelper)
  end

  context "render_highlighted()" do
    should "html escape the line & add the proper class" do
      res = render_highlighted("puts '<foo>'", "foo.rb")
      assert res.include?(%Q{<td class="code"><pre class="prettyprint lang-rb">puts &#x27;&lt;foo&gt;&#x27;</pre></td>}), "Res: #{res}"
    end

    should "add line numbers" do
      res = render_highlighted("alert('moo')\nalert('moo')", "foo.js")
      assert res.include?(%Q{<td class="line-numbers"><a href="#line2" name="line2">2</a></td>} ), "Res: #{res}"
    end
  end

  context "too_big_to_render" do
    should "knows when a blob is too big to be rendered within reasonable time" do
      assert !too_big_to_render?(1.kilobyte)
      assert too_big_to_render?(350.kilobyte+1)
    end
  end

  context "ascii/binary detection" do
    should "know that a plain text file is fine" do
      assert textual?(blob_with_name("jack.txt", "all work and no play"))
    end

    should "know that text files are fine" do
      assert textual?(blob_with_name("foo.rb", "class Lulz; end"))
      assert textual?(blob_with_name("foo.py", "class Lulz: pass"))
      assert textual?(blob_with_name("foo.c", "void lulz()"))
      assert textual?(blob_with_name("foo.m", "[lulz isForTehLaffs:YES]"))
    end

    should "know that binary are not textual" do
      assert !textual?(blob_with_name("foo.png", File.read(Rails.root + "public/images/rails.png")))
      assert !textual?(blob_with_name("foo.gif", "GIF89a\v\x00\r\x00\xD5!\x00\xBD"))
      assert !textual?(blob_with_name("foo.exe", "rabuf\06si\000ezodniw"))
      assert !textual?(blob_with_name("foo", "a"*1024 + "\000"))

      assert image?(blob_with_name("foo.png"))
      assert image?(blob_with_name("foo.gif"))
      assert image?(blob_with_name("foo.jpg"))
      assert image?(blob_with_name("foo.jpeg"))
      assert !image?(blob_with_name("foo.exe"))
    end
  end

  context "highlightable?" do
    should "be highlightable if it is codeish" do
      assert highlightable?(blob_with_name("foo.rb"))
      assert highlightable?(blob_with_name("foo.c"))
      assert highlightable?(blob_with_name("foo.h"))
      assert highlightable?(blob_with_name("foo.py"))
      assert highlightable?(blob_with_name("foo.css"))
    end

    should "not be highlightable if there is no file name extension" do
      assert !highlightable?(blob_with_name("README"))
    end

    should "not be highlightable if it is a plaintext file" do
      assert !highlightable?(blob_with_name("info.txt"))
      assert !highlightable?(blob_with_name("info.textile"))
    end
  end

  def blob_with_name(name, data = "")
    repo = mock("grit repo")
    Grit::Blob.create(repo, {:name => name, :data => data})
  end

  context "language highlightinh of a given filename" do
    should "return the name of a known file type" do
      assert_equal "list", language_of_file("foo.lisp")
      assert_equal "css", language_of_file("foo.css")
      assert_equal "lua", language_of_file("foo.lua")
      assert_equal "scala", language_of_file("foo.scala")
    end

    should "return nil if the filename cannot be highlighted" do
      assert_nil language_of_file("foo.bar")
    end
  end

end