1 files changed, 78 insertions, 0 deletions
diff --git a/spec/support/helpers/repo_helpers.rb b/spec/support/helpers/repo_helpers.rb
index 4af90f4af79..44d95a029af 100644
--- a/spec/support/helpers/repo_helpers.rb
+++ b/spec/support/helpers/repo_helpers.rb
@@ -11,6 +11,8 @@ module RepoHelpers
   #   blob.path # => 'files/js/commit.js.coffee'
   #   blob.data # => 'class Commit...'
   #
+  # Build the options hash that's passed to Rugged::Commit#create
+
   def sample_blob
     OpenStruct.new(
       oid: '5f53439ca4b009096571d3c8bc3d09d30e7431b3',
@@ -129,4 +131,80 @@ eos
       file_content: content
     ).execute
   end
+
+  def commit_options(repo, index, target, ref, message)
+    options = {}
+    options[:tree] = index.write_tree(repo)
+    options[:author] = {
+      email: "test@example.com",
+      name: "Test Author",
+      time: Time.gm(2014, "mar", 3, 20, 15, 1)
+    }
+    options[:committer] = {
+      email: "test@example.com",
+      name: "Test Author",
+      time: Time.gm(2014, "mar", 3, 20, 15, 1)
+    }
+    options[:message] ||= message
+    options[:parents] = repo.empty? ? [] : [target].compact
+    options[:update_ref] = ref
+
+    options
+  end
+
+  # Writes a new commit to the repo and returns a Rugged::Commit.  Replaces the
+  # contents of CHANGELOG with a single new line of text.
+  def new_commit_edit_old_file(repo)
+    oid = repo.write("I replaced the changelog with this text", :blob)
+    index = repo.index
+    index.read_tree(repo.head.target.tree)
+    index.add(path: "CHANGELOG", oid: oid, mode: 0100644)
+
+    options = commit_options(
+      repo,
+      index,
+      repo.head.target,
+      "HEAD",
+      "Edit CHANGELOG in its original location"
+    )
+
+    sha = Rugged::Commit.create(repo, options)
+    repo.lookup(sha)
+  end
+
+  # Writes a new commit to the repo and returns a Rugged::Commit.  Replaces the
+  # contents of the specified file_path with new text.
+  def new_commit_edit_new_file(repo, file_path, commit_message, text, branch = repo.head)
+    oid = repo.write(text, :blob)
+    index = repo.index
+    index.read_tree(branch.target.tree)
+    index.add(path: file_path, oid: oid, mode: 0100644)
+    options = commit_options(repo, index, branch.target, branch.canonical_name, commit_message)
+    sha = Rugged::Commit.create(repo, options)
+    repo.lookup(sha)
+  end
+
+  # Writes a new commit to the repo and returns a Rugged::Commit.  Replaces the
+  # contents of encoding/CHANGELOG with new text.
+  def new_commit_edit_new_file_on_branch(repo, file_path, branch_name, commit_message, text)
+    branch = repo.branches[branch_name]
+    new_commit_edit_new_file(repo, file_path, commit_message, text, branch)
+  end
+
+  # Writes a new commit to the repo and returns a Rugged::Commit.  Moves the
+  # CHANGELOG file to the encoding/ directory.
+  def new_commit_move_file(repo)
+    blob_oid = repo.head.target.tree.detect { |i| i[:name] == "CHANGELOG" }[:oid]
+    file_content = repo.lookup(blob_oid).content
+    oid = repo.write(file_content, :blob)
+    index = repo.index
+    index.read_tree(repo.head.target.tree)
+    index.add(path: "encoding/CHANGELOG", oid: oid, mode: 0100644)
+    index.remove("CHANGELOG")
+
+    options = commit_options(repo, index, repo.head.target, "HEAD", "Move CHANGELOG to encoding/")
+
+    sha = Rugged::Commit.create(repo, options)
+    repo.lookup(sha)
+  end
 end