Migrate issues authored by deleted user to the Ghost user

1 files changed, 51 insertions, 0 deletions

diff --git a/spec/migrations/migrate_issues_to_ghost_user_spec.rb b/spec/migrations/migrate_issues_to_ghost_user_spec.rb
new file mode 100644
index 00000000000..cfd4021fbac
--- /dev/null
+++ b/spec/migrations/migrate_issues_to_ghost_user_spec.rb
@@ -0,0 +1,51 @@
+require 'spec_helper'
+require Rails.root.join('db', 'migrate', '20170825104051_migrate_issues_to_ghost_user.rb')
+
+describe MigrateIssuesToGhostUser, :migration do
+  describe '#up' do
+    let(:projects) { table(:projects) }
+    let(:issues) { table(:issues) }
+    let(:users) { table(:users) }
+
+    before do
+      projects.create!(name: 'gitlab')
+      user = users.create(email: 'test@example.com')
+      issues.create(title: 'Issue 1', author_id: nil, project_id: 1)
+      issues.create(title: 'Issue 2', author_id: user.id, project_id: 1)
+    end
+
+    context 'when ghost user exists' do
+      let!(:ghost) { users.create(ghost: true, email: 'ghost@example.com') }
+
+      it 'does not create a new user' do
+        expect { schema_migrate_up! }.not_to change { User.count }
+      end
+
+      it 'migrates issues where author = nil to the ghost user' do
+        schema_migrate_up!
+
+        expect(issues.first.reload.author_id).to eq(ghost.id)
+      end
+
+      it 'does not change issues authored by an existing user' do
+        expect { schema_migrate_up! }.not_to change { issues.second.reload.author_id}
+      end
+    end
+
+    context 'when ghost user does not exist' do
+      it 'creates a new user' do
+        expect { schema_migrate_up! }.to change { User.count }.by(1)
+      end
+
+      it 'migrates issues where author = nil to the ghost user' do
+        schema_migrate_up!
+
+        expect(issues.first.reload.author_id).to eq(User.ghost.id)
+      end
+
+      it 'does not change issues authored by an existing user' do
+        expect { schema_migrate_up! }.not_to change { issues.second.reload.author_id}
+      end
+    end
+  end
+end