fix typo, added relevant spec

db/migrate/20161226122833_remove_dot_git_from_usernames.rb

@@ -75,7 +75,7 @@ class RemoveDotGitFromUsernames < ActiveRecord::Migration
         counter += 1
         path = "#{base}#{counter}"
 
-        return check_route(base, counter, path)
+        return check_routes(base, counter, path)
       end
     end
 

spec/migrations/remove_dot_git_from_usernames.rb → spec/migrations/remove_dot_git_from_usernames_spec.rb

@@ -5,17 +5,11 @@ require Rails.root.join('db', 'migrate', '20161226122833_remove_dot_git_from_use
 
 describe RemoveDotGitFromUsernames do
   let(:user) { create(:user) }
+  let(:migration) { described_class.new }
 
   describe '#up' do
-    let(:migration) { described_class.new }
-
     before do
-      namespace = user.namespace
-      namespace.path = 'test.git'
-      namespace.save!(validate: false)
-
-      user.username = 'test.git'
-      user.save!(validate: false)
+      update_namespace(user, 'test.git')
     end
 
     it 'renames user with .git in username' do
@@ -26,4 +20,38 @@ describe RemoveDotGitFromUsernames do
       expect(user.namespace.route.path).to eq('test_git')
     end
   end
+
+  context 'when new path exists already' do
+    describe '#up' do
+      let(:user2) { create(:user) }
+
+      before do
+        update_namespace(user, 'test.git')
+        update_namespace(user2, 'test_git')
+
+        storages = { 'default' => 'tmp/tests/custom_repositories' }
+
+        allow(Gitlab.config.repositories).to receive(:storages).and_return(storages)
+        allow(migration).to receive(:route_exists?).with('test_git').and_return(true)
+        allow(migration).to receive(:route_exists?).with('test_git1').and_return(false)
+      end
+
+      it 'renames user with .git in username' do
+        migration.up
+
+        expect(user.reload.username).to eq('test_git1')
+        expect(user.namespace.reload.path).to eq('test_git1')
+        expect(user.namespace.route.path).to eq('test_git1')
+      end
+    end
+  end
+
+  def update_namespace(user, path)
+    namespace = user.namespace
+    namespace.path = path
+    namespace.save!(validate: false)
+
+    user.username = path
+    user.save!(validate: false)
+  end
 end