test/unit/git_repository_test.rb

	git_repository_test.rb revision 5377dc644918632ef318825466e4f3cd861e27ec
require 'test_helper'

# Tests a git repository
#
# Author: Eugen Kuksa <eugenk@informatik.uni-bremen.de>

class GitRepositoryTest < ActiveSupport::TestCase

  ENV['LANG'] = 'C'

  context 'creating and deleting a repository' do
    setup do
      @path = '/tmp/ontohub/test/unit/git/repository'
    end

    teardown do
      FileUtils.rmtree(@path) if File.exists?(@path)
      @path = nil
      @repository = nil
    end

    should 'create repository' do
      @path_new = "#{@path}_new"
      assert !File.exists?(@path_new)
      @repository_new = GitRepository.new(@path_new)
      assert File.exists?(@path_new)
      assert @repository_new.empty?
    end

    should 'delete repository' do
      @path_new = "#{@path}_new"
      @repository_new = GitRepository.new(@path_new)
      assert File.exists?(@path_new)
      @repository_new.destroy
      assert !File.exists?(@path_new)
    end
  end

  context 'existing repository' do
    setup do
      @path = '/tmp/ontohub/test/unit/git/repository'
      @repository = GitRepository.new(@path)
      @userinfo = {
        email: 'jan@jansson.com',
        name: 'Jan Jansson',
        time: Time.now
      }
    end

    teardown do
      FileUtils.rmtree(@repository.path) if File.exists?(@repository.path)
      @path = nil
      @repository = nil
    end

    context 'using files' do
      setup do
        @filepath = 'path/file.txt'
        @content = 'Some content'
        @message = 'Some commit message'
      end

      should 'create single commit of a file' do
        @repository.commit_file(@userinfo, @content, @filepath, @message)
        assert @repository.path_exists?(@filepath)
        assert_equal @repository.get_file(@filepath)[:name], @filepath.split('/')[-1]
        assert_equal @repository.get_file(@filepath)[:content], @content
        assert_equal @repository.get_file('path/file.txt')[:mime_type], Mime::Type.lookup('text/plain')
        assert_equal @repository.commit_message, @message
        assert_equal @repository.commit_author[:name], @userinfo[:name]
        assert_equal @repository.commit_author[:email], @userinfo[:email]
        # removed because of time zone issues
        #assert_equal Time.at(@repository.commit_author[:time]), Time.gm(@userinfo[:time])
      end

      should 'delete a file' do
        @repository.commit_file(@userinfo, @content, @filepath, @message)
        @repository.delete_file(@userinfo, @filepath)
        assert !@repository.path_exists?(@filepath)
      end

      should 'overwrite a file' do
        content2 = "#{@content}_2"
        message2 = "#{@message}_2"
        @repository.commit_file(@userinfo, @content, @filepath, @message)
        first_commit_oid = @repository.head_oid
        @repository.commit_file(@userinfo, content2, @filepath, message2)
        assert @repository.path_exists?(@filepath)
        assert_equal @repository.get_file(@filepath)[:content], content2
        assert_equal @repository.commit_message(@repository.head_oid), message2
        assert_not_equal first_commit_oid, @repository.head_oid
      end

      should 'have test if path points through a file' do
        folder = "folder/1"
        fullpath = "#{folder}/#{@filepath}"
        @repository.commit_file(@userinfo, @content, fullpath, @message)
        assert !@repository.points_through_file?(folder)
        assert !@repository.points_through_file?(fullpath)
        assert @repository.points_through_file?("#{fullpath}/foo")
      end

      should 'throw Exception on erroneous paths' do
        @repository.commit_file(@userinfo, @content, @filepath, @message)
        assert_raise GitRepository::PathBelowFileException do
          @repository.commit_file(@userinfo, @content, "#{@filepath}/foo", @message)
        end
      end

      should 'reset state on empty repository with failing commit block' do
        assert @repository.empty?
        assert_raise Exception do
          @repository.commit_file(@userinfo, @content, @filepath, @message) do
            raise Exception
          end
        end
        # it is actually empty, but in this test this can't be found out
        #assert @repository.empty?
      end

      should 'reset state with failing commit block' do
        first_commit_oid = @repository.commit_file(@userinfo, @content, @filepath, @message)
        assert_equal first_commit_oid, @repository.head_oid
        assert_raise Exception do
          second_commit_oid = @repository.commit_file(@userinfo, "#{@content}!", @filepath, @message) do
            raise Exception
          end
        end
        # it is actually equal, but in this test this can't be found out
        #assert_equal first_commit_oid, @repository.head_oid
      end
    end

    context 'using folders' do
      setup do
        @subfolder = 'path'
        @filepath1 = "#{@subfolder}/file1.txt"
        @filepath2 = "#{@subfolder}/file2.txt"
        @filepath3 = 'file3.txt'
        @content = 'Some content'
        @message1 = 'Some commit message1'
        @message2 = 'Some commit message2'
        @message3 = 'Some commit message3'
        @commit_add1 = @repository.commit_file(@userinfo, @content, @filepath1, @message1)
        @commit_add2 = @repository.commit_file(@userinfo, @content, @filepath2, @message2)
        @commit_add3 = @repository.commit_file(@userinfo, @content, @filepath3, @message3)
        @commit_del1 = @repository.delete_file(@userinfo, @filepath1)
        @commit_del2 = @repository.delete_file(@userinfo, @filepath2)
        @commit_del3 = @repository.delete_file(@userinfo, @filepath3)
      end

      should 'read the right number of contents in the root folder after adding the first file' do
        assert_equal @repository.folder_contents(@commit_add1).size, 1
      end

      should 'read the right contents in the root folder after adding the first file' do
        assert_equal @repository.folder_contents(@commit_add1), [{
            type: :dir,
            name: @subfolder,
            path: @subfolder
          }]
      end

      should 'read the right number of contents in the subfolder after adding the first file' do
        assert_equal @repository.folder_contents(@commit_add1, @subfolder).size, 1
      end

      should 'read the right contents in the subfolder after adding the first file' do
        assert_equal @repository.folder_contents(@commit_add1, @subfolder), [{
          type: :file,
          name: @filepath1.split('/')[-1],
          path: @filepath1
        }]
      end


      should 'read the right number of contents in the root folder after adding the second file' do
        assert_equal @repository.folder_contents(@commit_add2).size, 1
      end

      should 'read the right contents in the root folder after adding the second file' do
        assert_equal @repository.folder_contents(@commit_add2), [{
          type: :dir,
          name: @subfolder,
          path: @subfolder
        }]
      end

      should 'read the right number of contents in the subfolder after adding the second file' do
        assert_equal @repository.folder_contents(@commit_add2, @subfolder).size, 2
      end

      should 'read the right contents in the subfolder after adding the second file' do
        assert_equal @repository.folder_contents(@commit_add2, @subfolder), [{
          type: :file,
          name: @filepath1.split('/')[-1],
          path: @filepath1
        },{
          type: :file,
          name: @filepath2.split('/')[-1],
          path: @filepath2
        }]
      end


      should 'read the right number of contents in the root folder after adding the third file' do
        assert_equal @repository.folder_contents(@commit_add3).size, 2
      end

      should 'read the right contents in the root folder after adding the third file' do
        assert_equal @repository.folder_contents(@commit_add3), [{
          type: :dir,
          name: @subfolder,
          path: @subfolder
        },{
          type: :file,
          name: @filepath3.split('/')[-1],
          path: @filepath3
        }]
      end

      should 'read the right number of contents in the subfolder after adding the third file' do
        assert_equal @repository.folder_contents(@commit_add3, @subfolder).size, 2
      end

      should 'read the right contents in the subfolder after adding the third file' do
        assert_equal @repository.folder_contents(@commit_add3, @subfolder), [{
          type: :file,
          name: @filepath1.split('/')[-1],
          path: @filepath1
        },{
          type: :file,
          name: @filepath2.split('/')[-1],
          path: @filepath2
        }]
      end

      should 'treat path "/" and empty path equally' do
        assert_equal @repository.folder_contents(@commit_add3, '/'), @repository.folder_contents(@commit_add3)
        assert_equal @repository.folder_contents(@commit_add3, '/'), @repository.folder_contents(@commit_add3, nil)
      end


      should 'read the right number of contents in the root folder after deleting the first file' do
        assert_equal @repository.folder_contents(@commit_del1).size, 2
      end

      should 'read the right contents in the root folder after deleting the first file' do
        assert_equal @repository.folder_contents(@commit_del1), [{
          type: :dir,
          name: @subfolder,
          path: @subfolder
        },{
          type: :file,
          name: @filepath3.split('/')[-1],
          path: @filepath3
        }]
      end

      should 'read the right number of contents in the subfolder after deleting the first file' do
        assert_equal @repository.folder_contents(@commit_del1, @subfolder).size, 1
      end

      should 'read the right contents in the subfolder after deleting the first file' do
        assert_equal @repository.folder_contents(@commit_del1, @subfolder), [{
          type: :file,
          name: @filepath2.split('/')[-1],
          path: @filepath2
        }]
      end


      should 'read the right number of contents in the root folder after deleting the second file' do
        assert_equal @repository.folder_contents(@commit_del2).size, 1
      end

      should 'read the right contents in the root folder after deleting the second file' do
        assert_equal @repository.folder_contents(@commit_del2), [{
          type: :file,
          name: @filepath3.split('/')[-1],
          path: @filepath3
        }]
      end


      should 'read the right number of contents in the root folder after deleting the third file' do
        assert_equal @repository.folder_contents(@commit_del3).size, 0
      end

      should 'read the right contents in the root folder after deleting the third file' do
        assert_equal @repository.folder_contents(@commit_del3), []
      end

      should 'process all files by files method' do
        files = []
        @repository.files do |entry|
          files << [entry.path, entry.last_change[:oid]]
        end
        assert_equal [], files

        @repository.files(@commit_add3) do |entry|
          files << [entry.path, entry.last_change[:oid]]
        end

        assert_equal [
          [@filepath1, @commit_add1],
          [@filepath2, @commit_add2],
          [@filepath3, @commit_add3] ], files
      end
    end
  end

end