RSpec to replicate duplicate JudgeAssignTasks problem

spec/fixes/investigate_duplicate_judge_assign_task_spec.rb

@@ -0,0 +1,71 @@
+# frozen_string_literal: true
+
+require "helpers/sanitized_json_configuration.rb"
+require "helpers/sanitized_json_importer.rb"
+
+# required to load `explain` endpoint in an RSpec
+require "helpers/sanitized_json_exporter.rb"
+require "helpers/intake_renderer.rb"
+
+feature "duplicate JudgeAssignTask investigation" do
+  before do
+    User.authenticate!(css_id: "PETERSBVAM")
+    Functions.grant!("System Admin", users: ["PETERSBVAM"]) # enable access to `export` endpoint
+  end
+
+  # Ticket: https://github.com/department-of-veterans-affairs/dsva-vacols/issues/174
+  # Target state: should only have 1 open JudgeAssignTask
+  describe "Judge cancels AttorneyTask in 2 browser windows" do
+    let!(:appeal) do
+      sji = SanitizedJsonImporter.from_file("spec/records/appeal-121304-dup_jatasks.json", verbosity: 0)
+      sji.import
+      appeal = sji.imported_records[Appeal.table_name].first
+
+      judge = User.find_by_css_id("PETERSBVAM")
+      create(:staff, :judge_role, user: judge)
+
+      appeal.reload
+    end
+
+    scenario "Caseflow creates 2 open JudgeAssignTasks" do
+      within_window open_new_window do
+        # Get a narrative of what happened; search for ":50:38" and ":50:44"
+        visit "/explain/appeals/#{appeal.uuid}"
+        expect(page).to have_content("Narrative table")
+      end
+
+      # Delete tasks created on or after 2021-06-13 so we can recreate the problem
+      appeal.tasks.where("created_at >= ?", "2021-06-13").delete_all
+      # Set task status so that user as task actions
+      Task.find(2_001_437_274).assigned!
+      Task.find(2_001_437_273).on_hold!
+
+      # In first window
+      visit "/queue/appeals/#{appeal.uuid}"
+
+      # Open another window to the same page
+      second_window = open_new_window
+      within_window second_window do
+        visit "/queue/appeals/#{appeal.uuid}"
+      end
+
+      # Back in first window
+      click_dropdown(prompt: "Select an action", text: "Cancel task and return to judge")
+      fill_in(COPY::ADD_COLOCATED_TASK_INSTRUCTIONS_LABEL, with: "cancel once")
+      click_on "Submit"
+      expect(page).to have_content("case has been cancelled")
+
+      # Repeat same actions in second_window
+      within_window second_window do
+        click_dropdown(prompt: "Select an action", text: "Cancel task and return to judge")
+        fill_in(COPY::ADD_COLOCATED_TASK_INSTRUCTIONS_LABEL, with: "cancel once")
+        click_on "Submit"
+        expect(page).to have_content("case has been cancelled")
+      end
+
+      # Notice there are 2 open JudgeAssignTasks
+      appeal.reload.treee
+      # binding.pry # Uncomment to examine the browser tabs
+    end
+  end
+end