Update SystemNoteService method naming conventions

Now the verb comes first, and there is no restriction on
singular/plural.

app/services/issuable_base_service.rb

@@ -2,17 +2,17 @@ class IssuableBaseService < BaseService
   private
 
   def create_assignee_note(issuable)
-    SystemNoteService.assignee_change(
+    SystemNoteService.change_assignee(
       issuable, issuable.project, current_user, issuable.assignee)
   end
 
   def create_milestone_note(issuable)
-    SystemNoteService.milestone_change(
+    SystemNoteService.change_milestone(
       issuable, issuable.project, current_user, issuable.milestone)
   end
 
   def create_labels_note(issuable, added_labels, removed_labels)
-    SystemNoteService.label_change(
+    SystemNoteService.change_label(
       issuable, issuable.project, current_user, added_labels, removed_labels)
   end
 end

app/services/issues/close_service.rb

@@ -14,7 +14,7 @@ module Issues
     private
 
     def create_note(issue, current_commit)
-      SystemNoteService.status_change(issue, issue.project, current_user, issue.state, current_commit)
+      SystemNoteService.change_status(issue, issue.project, current_user, issue.state, current_commit)
     end
   end
 end

app/services/issues/reopen_service.rb

@@ -14,7 +14,7 @@ module Issues
     private
 
     def create_note(issue)
-      SystemNoteService.status_change(issue, issue.project, current_user, issue.state, nil)
+      SystemNoteService.change_status(issue, issue.project, current_user, issue.state, nil)
     end
   end
 end

app/services/merge_requests/base_service.rb

@@ -2,7 +2,7 @@ module MergeRequests
   class BaseService < ::IssuableBaseService
 
     def create_note(merge_request)
-      SystemNoteService.status_change(merge_request, merge_request.target_project, current_user, merge_request.state, nil)
+      SystemNoteService.change_status(merge_request, merge_request.target_project, current_user, merge_request.state, nil)
     end
 
     def hook_data(merge_request, action)

app/services/merge_requests/refresh_service.rb

@@ -82,9 +82,9 @@ module MergeRequests
           mr_commit_ids.include?(commit.id)
         end
 
-        SystemNoteService.commit_add(merge_request, merge_request.project,
-                                     @current_user, new_commits,
-                                     existing_commits, @oldrev)
+        SystemNoteService.add_commits(merge_request, merge_request.project,
+                                      @current_user, new_commits,
+                                      existing_commits, @oldrev)
       end
     end
 

app/services/system_note_service.rb

@@ -2,11 +2,30 @@
 #
 # Used for creating system notes (e.g., when a user references a merge request
 # from an issue, an issue's assignee changes, an issue is closed, etc.)
-#
-# All methods creating notes should be named using a singular noun and
-# present-tense verb (e.g., "assignee_change" not "assignee_changed",
-# "label_change" not "labels_change").
 class SystemNoteService
+  # Called when commits are added to a Merge Request
+  #
+  # noteable         - Noteable object
+  # project          - Project owning noteable
+  # author           - User performing the change
+  # new_commits      - Array of Commits added since last push
+  # existing_commits - Array of Commits added in a previous push
+  # oldrev           - TODO (rspeicher): I have no idea what this actually does
+  #
+  # See new_commit_summary and existing_commit_summary.
+  #
+  # Returns the created Note object
+  def self.add_commits(noteable, project, author, new_commits, existing_commits = [], oldrev = nil)
+    total_count  = new_commits.length + existing_commits.length
+    commits_text = "#{total_count} commit".pluralize(total_count)
+
+    body = "Added #{commits_text}:\n\n"
+    body << existing_commit_summary(noteable, existing_commits, oldrev)
+    body << new_commit_summary(new_commits).join("\n")
+
+    create_note(noteable: noteable, project: project, author: author, note: body)
+  end
+
   # Called when the assignee of a Noteable is changed or removed
   #
   # noteable - Noteable object
@@ -21,49 +40,12 @@ class SystemNoteService
   #   "Reassigned to @rspeicher"
   #
   # Returns the created Note object
-  def self.assignee_change(noteable, project, author, assignee)
+  def self.change_assignee(noteable, project, author, assignee)
     body = assignee.nil? ? 'Assignee removed' : "Reassigned to @#{assignee.username}"
 
     create_note(noteable: noteable, project: project, author: author, note: body)
   end
 
-  # Called when a Mentionable references a Noteable
-  #
-  # noteable  - Noteable object being referenced
-  # mentioner - Mentionable object
-  # author    - User performing the reference
-  #
-  # Example Note text:
-  #
-  #   "Mentioned in #1"
-  #
-  #   "Mentioned in !2"
-  #
-  #   "Mentioned in 54f7727c"
-  #
-  # See cross_reference_note_content.
-  #
-  # Returns the created Note object
-  def self.cross_reference(noteable, mentioner, author)
-    return if cross_reference_disallowed?(noteable, mentioner)
-
-    gfm_reference = mentioner_gfm_ref(noteable, mentioner)
-
-    note_options = {
-      project: noteable.project,
-      author:  author,
-      note:    cross_reference_note_content(gfm_reference)
-    }
-
-    if noteable.kind_of?(Commit)
-      note_options.merge!(noteable_type: 'Commit', commit_id: noteable.id)
-    else
-      note_options.merge!(noteable: noteable)
-    end
-
-    create_note(note_options)
-  end
-
   # Called when one or more labels on a Noteable are added and/or removed
   #
   # noteable       - Noteable object
@@ -81,7 +63,7 @@ class SystemNoteService
   #   "Removed ~5 label"
   #
   # Returns the created Note object
-  def self.label_change(noteable, project, author, added_labels, removed_labels)
+  def self.change_label(noteable, project, author, added_labels, removed_labels)
     labels_count = added_labels.count + removed_labels.count
 
     references     = ->(label) { "~#{label.id}" }
@@ -119,36 +101,13 @@ class SystemNoteService
   #   "Miletone changed to 7.11"
   #
   # Returns the created Note object
-  def self.milestone_change(noteable, project, author, milestone)
+  def self.change_milestone(noteable, project, author, milestone)
     body = 'Milestone '
     body += milestone.nil? ? 'removed' : "changed to #{milestone.title}"
 
     create_note(noteable: noteable, project: project, author: author, note: body)
   end
 
-  # Called when commits are added to a Merge Request
-  #
-  # noteable         - Noteable object
-  # project          - Project owning noteable
-  # author           - User performing the change
-  # new_commits      - Array of Commits added since last push
-  # existing_commits - Array of Commits added in a previous push
-  # oldrev           - TODO (rspeicher): I have no idea what this actually does
-  #
-  # See new_commit_summary and existing_commit_summary.
-  #
-  # Returns the created Note object
-  def self.commit_add(noteable, project, author, new_commits, existing_commits = [], oldrev = nil)
-    total_count  = new_commits.length + existing_commits.length
-    commits_text = "#{total_count} commit".pluralize(total_count)
-
-    body = "Added #{commits_text}:\n\n"
-    body << existing_commit_summary(noteable, existing_commits, oldrev)
-    body << new_commit_summary(new_commits).join("\n")
-
-    create_note(noteable: noteable, project: project, author: author, note: body)
-  end
-
   # Called when the status of a Noteable is changed
   #
   # noteable - Noteable object
@@ -164,13 +123,50 @@ class SystemNoteService
   #   "Status changed to closed by bc17db76"
   #
   # Returns the created Note object
-  def self.status_change(noteable, project, author, status, source)
+  def self.change_status(noteable, project, author, status, source)
     body = "Status changed to #{status}"
     body += " by #{source.gfm_reference}" if source
 
     create_note(noteable: noteable, project: project, author: author, note: body)
   end
 
+  # Called when a Mentionable references a Noteable
+  #
+  # noteable  - Noteable object being referenced
+  # mentioner - Mentionable object
+  # author    - User performing the reference
+  #
+  # Example Note text:
+  #
+  #   "Mentioned in #1"
+  #
+  #   "Mentioned in !2"
+  #
+  #   "Mentioned in 54f7727c"
+  #
+  # See cross_reference_note_content.
+  #
+  # Returns the created Note object
+  def self.cross_reference(noteable, mentioner, author)
+    return if cross_reference_disallowed?(noteable, mentioner)
+
+    gfm_reference = mentioner_gfm_ref(noteable, mentioner)
+
+    note_options = {
+      project: noteable.project,
+      author:  author,
+      note:    cross_reference_note_content(gfm_reference)
+    }
+
+    if noteable.kind_of?(Commit)
+      note_options.merge!(noteable_type: 'Commit', commit_id: noteable.id)
+    else
+      note_options.merge!(noteable: noteable)
+    end
+
+    create_note(note_options)
+  end
+
   def self.cross_reference?(note_text)
     note_text.start_with?(cross_reference_note_prefix)
   end