[deploy] Flaky Spec Fix:Set TimeZone For All Spec Requests to Match Zonebie (#10891)

app/lib/middleware/time_zone_setter.rb

@@ -0,0 +1,13 @@
+module Middleware
+  class TimeZoneSetter
+    def initialize(app)
+      @app = app
+    end
+
+    def call(env)
+      Time.zone = ActiveSupport::TimeZone.new(ENV["TZ"]) if ENV["TZ"]
+
+      @app.call(env)
+    end
+  end
+end

config/environments/test.rb

@@ -5,6 +5,10 @@ $VERBOSE = nil
 Rails.application.configure do
   # Settings specified here will take precedence over those in config/application.rb.
 
+  # Include middleware to ensure timezone for browser requests for Capybara specs
+  # matches the random zonebie timezone set at the beginning of our spec run
+  config.middleware.use(Middleware::TimeZoneSetter)
+
   # The test environment is used exclusively to run your application's
   # test suite. You never need to work with it otherwise. Remember that
   # your test database is "scratch space" for the test suite and is wiped

spec/rails_helper.rb

@@ -84,6 +84,10 @@ RSpec.configure do |config|
   end
 
   config.before(:suite) do
+    # Set the TZ ENV variable with the current random timezone from zonebie
+    # which we can then use to properly set the browser time for Capybara specs
+    ENV["TZ"] = Time.zone.tzinfo.name
+
     Search::Cluster.recreate_indexes
   end