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-rw-r--r--spec/services/resolve_remote_account_service_spec.rb23
1 files changed, 23 insertions, 0 deletions
diff --git a/spec/services/resolve_remote_account_service_spec.rb b/spec/services/resolve_remote_account_service_spec.rb
index ad4d436ba..c51588210 100644
--- a/spec/services/resolve_remote_account_service_spec.rb
+++ b/spec/services/resolve_remote_account_service_spec.rb
@@ -68,4 +68,27 @@ RSpec.describe ResolveRemoteAccountService do
     expect(account.domain).to eq 'localdomain.com'
     expect(account.remote_url).to eq 'https://webdomain.com/users/foo.atom'
   end
+
+  it 'processes one remote account at a time using locks' do
+    wait_for_start = true
+    fail_occurred  = false
+    return_values  = []
+
+    threads = Array.new(5) do
+      Thread.new do
+        true while wait_for_start
+        begin
+          return_values << subject.call('foo@localdomain.com')
+        rescue ActiveRecord::RecordNotUnique
+          fail_occurred = true
+        end
+      end
+    end
+
+    wait_for_start = false
+    threads.each(&:join)
+
+    expect(fail_occurred).to be false
+    expect(return_values).to_not include(nil)
+  end
 end