Experiment to study Grit's behavior on a readonly filesystem.

test_rogit.rb

#!/usr/bin/env ruby

require 'grit'
require 'test/unit'

REPO_PATH = ARGV[0]

if ARGV.empty?
  puts "Usage: test_rogit.rb [PATH_TO_GIT_REPO]"
  exit
else
  $repo = Grit::Repo.new(REPO_PATH)
end


class TestRoGit < Test::Unit::TestCase
  # Test if the git repo object got initialized.
  def test_repo_path
    rpath = $repo.bare ? REPO_PATH :  REPO_PATH + "/.git"
    assert_equal(rpath, $repo.path)
  end

  # For all the Branch HEADs, Tags & Commit IDs, look for the first
  # file Blob in the commit tree and assert the equality of the size
  # of its contents against the size reported by Grit::Blob.size
  #
  # The idea is to see if Grit is able to fetch file's contents from
  # across the commit-ids, tags when mounted on a RW or RO filesystem.
  
  def test_commit_data
    commit_list = ['HEAD']

    # Add all the branches to the commit list
    $repo.branches.each{|branch|
      commit_list << branch.name
      
      # Add all the commit-ids from this branch to the commit list
      $repo.commits(branch.name, 10000).each{|c| commit_list << c.id}
    }

    # Add all the tags to the commit list
    $repo.tags.each{|t| commit_list << t.name}

    # Run assertions for all the commit ids collected.
    commit_list.each{|commit|
      tree = $repo.commits(commit).first.tree
      if tree.contents.first.class == Grit::Blob
        blob = tree.contents.first
        assert_equal(blob.size, blob.data.length)
      end
    }
  end
end