Restore User.from_gitaly

lib/gitlab/git/user.rb

@@ -7,6 +7,11 @@ module Gitlab
         new(gitlab_user.username, gitlab_user.name, gitlab_user.email, Gitlab::GlId.gl_id(gitlab_user))
       end
 
+      # TODO support the username field in Gitaly https://gitlab.com/gitlab-org/gitaly/issues/628
+      def self.from_gitaly(gitaly_user)
+        new('', gitaly_user.name, gitaly_user.email, gitaly_user.gl_id)
+      end
+
       def initialize(username, name, email, gl_id)
         @username = username
         @name = name

spec/lib/gitlab/git/user_spec.rb

@@ -8,6 +8,20 @@ describe Gitlab::Git::User do
 
   subject { described_class.new(username, name, email, gl_id) }
 
+  describe '.from_gitaly' do
+    let(:gitaly_user) { Gitaly::User.new(name: name, email: email, gl_id: gl_id) }
+    subject { described_class.from_gitaly(gitaly_user) }
+
+    it { expect(subject).to eq(described_class.new('', name, email, gl_id)) }
+  end
+
+  describe '.from_gitlab' do
+    let(:user) { build(:user) }
+    subject { described_class.from_gitlab(user) }
+
+    it { expect(subject).to eq(described_class.new(user.username, user.name, user.email, 'user-')) }
+  end
+
   describe '#==' do
     def eq_other(username, name, email, gl_id)
       eq(described_class.new(username, name, email, gl_id))