fox specs

app/models/commit.rb

@@ -135,10 +135,10 @@ class Commit
     description.present?
   end
-  def hook_attrs
+  def hook_attrs(with_changed_files = false)
     path_with_namespace = project.path_with_namespace
-    {
+    data = {
       id: id,
       message: safe_message,
       timestamp: committed_date.xmlschema,
@@ -146,11 +146,18 @@ class Commit
       author: {
         name: author_name,
         email: author_email
-      },
-      added: repo_changes[:added],
-      modified: repo_changes[:modified],
-      removed: repo_changes[:removed]
+      }
     }
+
+    if with_changed_files
+      data.merge!({
+        added: repo_changes[:added],
+        modified: repo_changes[:modified],
+        removed: repo_changes[:removed]
+      })
+    end
+
+    data
   end
   # Discover issues should be closed when this commit is pushed to a project's
@@ -205,14 +212,16 @@ class Commit
   def repo_changes
     changes = { added: [], modified: [], removed: [] }
-    diffs.each do |diff|
-      case true
-      when diff.deleted_file
-        changes[:removed] << diff.old_path
-      when diff.renamed_file, diff.new_file
-        changes[:added] << diff.new_path
-      else
-        changes[:modified] << diff.new_path
+    if diffs.any?
+      diffs.each do |diff|
+        case true
+        when diff.deleted_file
+          changes[:removed] << diff.old_path
+        when diff.renamed_file, diff.new_file
+          changes[:added] << diff.new_path
+        else
+          changes[:modified] << diff.new_path
+        end
       end
     end

app/models/merge_request.rb

@@ -291,7 +291,7 @@ class MergeRequest < ActiveRecord::Base
       work_in_progress: work_in_progress?
     }
-    unless last_commit.nil?
+    if last_commit
       attrs.merge!(last_commit: last_commit.hook_attrs)
     end

lib/gitlab/push_data_builder.rb

@@ -30,7 +30,9 @@ module Gitlab
         # For performance purposes maximum 20 latest commits
         # will be passed as post receive hook data.
-        commit_attrs = commits_limited.map(&:hook_attrs)
+        commit_attrs = commits_limited.map do |commit|
+          commit.hook_attrs(true)
+        end
         type = Gitlab::Git.tag_ref?(ref) ? "tag_push" : "push"

spec/models/commit_spec.rb

@@ -102,7 +102,7 @@ eos
   end
   describe '#hook_attrs' do
-    let(:data) { commit.hook_attrs }
+    let(:data) { commit.hook_attrs(true) }
     it { expect(data).to be_a(Hash) }
     it { expect(data[:message]).to include('Add submodule from gitlab.com') }