Allow Member.add_user to handle access requesters

Changes include:

- Ensure Member.add_user is not called directly when not necessary
- New GroupMember.add_users_to_group to have the same abstraction level as for Project
- Refactor Member.add_user to take a source instead of an array of members
- Fix Rubocop offenses
- Always use Project#add_user instead of project.team.add_user
- Factorize users addition as members in Member.add_users_to_source
- Make access_level a keyword argument in GroupMember.add_users_to_group and ProjectMember.add_users_to_projects
- Destroy any requester before adding them as a member
- Improve the way we handle access requesters in Member.add_user
  Instead of removing the requester and creating a new member,
  we now simply accepts their access request. This way, they will
  receive a "access request granted" email.
- Fix error that was previously silently ignored
- Stop raising when access level is invalid in Member, let Rails validation do their work

Signed-off-by: Rémy Coutable <remy@rymai.me>

2 files changed, 6 insertions, 6 deletions

diff --git a/spec/lib/gitlab/template/issue_template_spec.rb b/spec/lib/gitlab/template/issue_template_spec.rb
index f770857e958..d2d334e6413 100644
--- a/spec/lib/gitlab/template/issue_template_spec.rb
+++ b/spec/lib/gitlab/template/issue_template_spec.rb
@@ -10,7 +10,7 @@ describe Gitlab::Template::IssueTemplate do
   let(:file_path_3) { '.gitlab/issue_templates/feature_proposal.md' }
 
   before do
-    project.team.add_user(user, Gitlab::Access::MASTER)
+    project.add_user(user, Gitlab::Access::MASTER)
     project.repository.commit_file(user, file_path_1, "something valid", "test 3", "master", false)
     project.repository.commit_file(user, file_path_2, "template_test", "test 1", "master", false)
     project.repository.commit_file(user, file_path_3, "feature_proposal", "test 2", "master", false)
@@ -53,7 +53,7 @@ describe Gitlab::Template::IssueTemplate do
 
     context 'when repo is bare or empty' do
       let(:empty_project) { create(:empty_project) }
-      before { empty_project.team.add_user(user, Gitlab::Access::MASTER) }
+      before { empty_project.add_user(user, Gitlab::Access::MASTER) }
 
       it "returns empty array" do
         templates = subject.by_category('', empty_project)
@@ -78,7 +78,7 @@ describe Gitlab::Template::IssueTemplate do
     context "when repo is empty" do
       let(:empty_project) { create(:empty_project) }
 
-      before { empty_project.team.add_user(user, Gitlab::Access::MASTER) }
+      before { empty_project.add_user(user, Gitlab::Access::MASTER) }
 
       it "raises file not found" do
         issue_template = subject.new('.gitlab/issue_templates/not_existent.md', empty_project)
diff --git a/spec/lib/gitlab/template/merge_request_template_spec.rb b/spec/lib/gitlab/template/merge_request_template_spec.rb
index bb0f68043fa..ddf68c4cf78 100644
--- a/spec/lib/gitlab/template/merge_request_template_spec.rb
+++ b/spec/lib/gitlab/template/merge_request_template_spec.rb
@@ -10,7 +10,7 @@ describe Gitlab::Template::MergeRequestTemplate do
   let(:file_path_3) { '.gitlab/merge_request_templates/feature_proposal.md' }
 
   before do
-    project.team.add_user(user, Gitlab::Access::MASTER)
+    project.add_user(user, Gitlab::Access::MASTER)
     project.repository.commit_file(user, file_path_1, "something valid", "test 3", "master", false)
     project.repository.commit_file(user, file_path_2, "template_test", "test 1", "master", false)
     project.repository.commit_file(user, file_path_3, "feature_proposal", "test 2", "master", false)
@@ -53,7 +53,7 @@ describe Gitlab::Template::MergeRequestTemplate do
 
     context 'when repo is bare or empty' do
       let(:empty_project) { create(:empty_project) }
-      before { empty_project.team.add_user(user, Gitlab::Access::MASTER) }
+      before { empty_project.add_user(user, Gitlab::Access::MASTER) }
 
       it "returns empty array" do
         templates = subject.by_category('', empty_project)
@@ -78,7 +78,7 @@ describe Gitlab::Template::MergeRequestTemplate do
     context "when repo is empty" do
       let(:empty_project) { create(:empty_project) }
 
-      before { empty_project.team.add_user(user, Gitlab::Access::MASTER) }
+      before { empty_project.add_user(user, Gitlab::Access::MASTER) }
 
       it "raises file not found" do
         issue_template = subject.new('.gitlab/merge_request_templates/not_existent.md', empty_project)