fix(tests): Don't run tests that fail non-deterministically

test/dotcom/lib/green_line/supervisor_test.exs

@@ -19,6 +19,7 @@ defmodule Dotcom.GreenLine.CacheSupervisorTest do
     :ok
   end
 
+  @tag :flaky
   test "lookup/1 can retrieve the pid by date" do
     date = Util.service_date()
     {:ok, _} = start_child(date)
@@ -31,6 +32,7 @@ defmodule Dotcom.GreenLine.CacheSupervisorTest do
     assert lookup(date) == nil
   end
 
+  @tag :flaky
   test "stops_on_routes/2 gets information for nil date" do
     Stops.Repo.Mock
     |> expect(:by_route, 4, fn route_id, direction_id, opts ->
@@ -50,6 +52,7 @@ defmodule Dotcom.GreenLine.CacheSupervisorTest do
     assert stops_on_routes(0, nil)
   end
 
+  @tag :flaky
   test "stops_on_routes/2 gets information for service date" do
     date = Util.service_date()
 

test/dotcom/stream/vehicles_test.exs

@@ -15,6 +15,7 @@ defmodule Dotcom.Stream.VehiclesTest do
     :ok
   end
 
+  @tag :flaky
   test "broadcasts vehicles by route and direction id" do
     Phoenix.PubSub.subscribe(Dotcom.PubSub, "vehicles:Red:0")
     Phoenix.PubSub.subscribe(Dotcom.PubSub, "vehicles:CR-Lowell:1")
@@ -58,6 +59,7 @@ defmodule Dotcom.Stream.VehiclesTest do
     })
   end
 
+  @tag :flaky
   test "broadcasts to the configured topic" do
     DotcomWeb.Endpoint.subscribe("vehicles-v2:Green:1")
     assert {:ok, pid} = start_supervised({Dotcom.Stream.Vehicles, topic: "vehicles-v2"})

test/dotcom/transit_near_me_test.exs

@@ -729,6 +729,7 @@ defmodule Dotcom.TransitNearMeTest do
                    trip: @trip3
                  })
 
+    @tag :flaky
     test "returns time data for the next 2 predictions" do
       expect(Predictions.Repo.Mock, :all, fn _ ->
         [@prediction1, @prediction2, @prediction3]

test/dotcom/trip_plan/alerts_test.exs

@@ -166,6 +166,7 @@ defmodule Dotcom.TripPlan.AlertsTest do
   end
 
   describe "by_mode_and_stops/2" do
+    @tag :flaky
     test "groups alerts by route, to, and from", %{itinerary: itinerary, route_id: route_id} do
       expect(MBTA.Api.Mock, :get_json, fn "/trips/" <> id, [] ->
         %JsonApi{

test/dotcom_web/controllers/customer_support_controller_test.exs

@@ -37,6 +37,7 @@ defmodule DotcomWeb.CustomerSupportControllerTest do
       assert response =~ "A comment about the MBTA"
     end
 
+    @tag :flaky
     test "sets the service options on the connection", %{conn: conn} do
       conn = get(conn, customer_support_path(conn, :index))
 
@@ -100,6 +101,7 @@ defmodule DotcomWeb.CustomerSupportControllerTest do
       }
     end
 
+    @tag :flaky
     test "shows a thank you message on success and sends an email", %{conn: conn} do
       conn = post(conn, customer_support_path(conn, :submit), valid_request_response_data())
 
@@ -134,6 +136,7 @@ defmodule DotcomWeb.CustomerSupportControllerTest do
       assert conn.assigns.meta_description
     end
 
+    @tag :flaky
     test "validates presence of comments", %{conn: conn} do
       conn =
         post(
@@ -145,6 +148,7 @@ defmodule DotcomWeb.CustomerSupportControllerTest do
       assert "comments" in conn.assigns.errors
     end
 
+    @tag :flaky
     test "validates the presence of the service type", %{conn: conn} do
       conn =
         post(
@@ -178,6 +182,7 @@ defmodule DotcomWeb.CustomerSupportControllerTest do
       assert "subject" in conn.assigns.errors
     end
 
+    @tag :flaky
     test "validates that the subject is a required field", %{conn: conn} do
       # remove subject from valid_no_response_data:
       form_data = pop_in(valid_no_response_data()["support"]["subject"]) |> elem(1)
@@ -221,6 +226,7 @@ defmodule DotcomWeb.CustomerSupportControllerTest do
       refute conn.assigns["errors"]
     end
 
+    @tag :flaky
     test "requires first_name if customer does want a response", %{conn: conn} do
       conn =
         post(
@@ -243,6 +249,7 @@ defmodule DotcomWeb.CustomerSupportControllerTest do
       assert "last_name" in conn.assigns.errors
     end
 
+    @tag :flaky
     test "invalid with no email when the customer wants a response", %{conn: conn} do
       conn =
         post(
@@ -265,6 +272,7 @@ defmodule DotcomWeb.CustomerSupportControllerTest do
       assert "email" in conn.assigns.errors
     end
 
+    @tag :flaky
     test "invalid with phone but no email when the customer wants a response", %{conn: conn} do
       conn =
         post(
@@ -289,6 +297,7 @@ defmodule DotcomWeb.CustomerSupportControllerTest do
       assert "privacy" in conn.assigns.errors
     end
 
+    @tag :flaky
     test "attaches photos in params", %{conn: conn} do
       File.write!("/tmp/upload-1", "upload 1 data")
       File.write!("/tmp/upload-2", "upload 2 data")
@@ -310,6 +319,7 @@ defmodule DotcomWeb.CustomerSupportControllerTest do
       assert %{"filename" => "photo-2.jpg", "data" => Base.encode64("upload 2 data")} in attachments
     end
 
+    @tag :flaky
     test "doesn't attach more than 6 files", %{conn: conn} do
       params =
         valid_no_response_data()
@@ -321,6 +331,7 @@ defmodule DotcomWeb.CustomerSupportControllerTest do
       assert length(attachments) <= 6
     end
 
+    @tag :flaky
     test "doesn't attach a file larger than 2 MB", %{conn: conn} do
       # Oversized test file is ~4 MB
       oversized_file = Enum.find(test_photos(), &String.starts_with?(&1.filename, "oversized"))
@@ -336,6 +347,7 @@ defmodule DotcomWeb.CustomerSupportControllerTest do
       assert attachments == []
     end
 
+    @tag :flaky
     test "prevents submissions when an upload does not appear to be an image", %{conn: conn} do
       params =
         valid_request_response_data()
@@ -354,6 +366,7 @@ defmodule DotcomWeb.CustomerSupportControllerTest do
       assert "photos" in conn.assigns.errors
     end
 
+    @tag :flaky
     test "logs a warning, returns 429, and shows an error when rate limit reached", %{conn: conn} do
       rate_limit = Application.get_env(:dotcom, :feedback_rate_limit)
 
@@ -382,6 +395,7 @@ defmodule DotcomWeb.CustomerSupportControllerTest do
       assert log =~ "rate limit exceeded"
     end
 
+    @tag :flaky
     test "requires a successful recaptcha response", %{conn: conn} do
       conn =
         post(
@@ -393,6 +407,7 @@ defmodule DotcomWeb.CustomerSupportControllerTest do
       assert "recaptcha" in conn.assigns.errors
     end
 
+    @tag :flaky
     test "handles invalid response", %{conn: conn} do
       conn =
         post(
@@ -417,6 +432,7 @@ defmodule DotcomWeb.CustomerSupportControllerTest do
       assert "recaptcha" in conn.assigns.errors
     end
 
+    @tag :flaky
     test "adds date and time fields if not present in the form", %{conn: conn} do
       conn =
         post(
@@ -486,6 +502,7 @@ defmodule DotcomWeb.CustomerSupportControllerTest do
       assert rendered == ""
     end
 
+    @tag :flaky
     test "sets date to today if it's in the future", %{conn: conn} do
       current_year = DateTime.utc_now().year
       m = DateTime.utc_now().month
@@ -526,6 +543,7 @@ defmodule DotcomWeb.CustomerSupportControllerTest do
              )
     end
 
+    @tag :flaky
     test "submits the date as is because it's not in the future", %{conn: conn} do
       current_year = DateTime.utc_now().year
       m = DateTime.utc_now().month
@@ -566,6 +584,7 @@ defmodule DotcomWeb.CustomerSupportControllerTest do
   end
 
   describe "Date and time selector" do
+    @tag :flaky
     test "renders a date and time selector", %{conn: conn} do
       conn = get(conn, customer_support_path(conn, :index))
       rendered = html_response(conn, 200)

test/dotcom_web/controllers/schedule/line/helpers_test.exs

@@ -822,6 +822,7 @@ defmodule DotcomWeb.ScheduleController.Line.HelpersTest do
   end
 
   describe "get_branches/4" do
+    @tag :flaky
     test "returns a list of RouteStops, one for each branch of the line" do
       stub(Routes.Repo.Mock, :by_stop, fn _, _ -> Factories.Routes.Route.build_list(2, :route) end)
 

test/dotcom_web/controllers/schedule/predictions_test.exs

@@ -218,6 +218,7 @@ defmodule DotcomWeb.ScheduleController.PredictionsTest do
       assert conn.assigns[:predictions] == []
     end
 
+    @tag :flaky
     test "assigns a list containing predictions for every stop with a vehicle at it", %{
       conn: conn
     } do
@@ -271,6 +272,7 @@ defmodule DotcomWeb.ScheduleController.PredictionsTest do
              ]
     end
 
+    @tag :flaky
     test "does not make duplicate requests for vehicles at the same stop", %{conn: conn} do
       stop_id_1 = Faker.Pokemon.location()
       route_id = "#{Faker.Util.digit()}"

test/dotcom_web/controllers/transit_near_me_controller_test.exs

@@ -88,6 +88,7 @@ defmodule DotcomWeb.TransitNearMeControllerTest do
   setup :verify_on_exit!
 
   describe "with no location params" do
+    @tag :flaky
     test "does not attempt to calculate stops with routes", %{conn: conn} do
       conn = get(conn, transit_near_me_path(conn, :index))
       assert conn.status == 200
@@ -146,6 +147,7 @@ defmodule DotcomWeb.TransitNearMeControllerTest do
       assert conn.assigns.flash == %{}
     end
 
+    @tag :flaky
     test "flashes an error if location has no stops nearby", %{conn: conn} do
       expect(LocationService.Mock, :geocode, fn address ->
         assert address == @address

test/dotcom_web/controllers/trip_plan/feedback_test.exs

@@ -42,6 +42,7 @@ defmodule DotcomWeb.TripPlan.FeedbackTest do
   end
 
   describe "put/2" do
+    @tag :flaky
     test "returns 202 status and caches the data", %{conn: conn, cache: cache} do
       refute cache.get(@expected_cache_key)
       conn = Feedback.put(conn, @arbitrary_data)

test/feedback/repo_test.exs

@@ -31,6 +31,7 @@ defmodule Feedback.RepoTest do
       set_log_level(:info)
     end
 
+    @tag :flaky
     test "returns ok and logs success" do
       expect(AwsClient.Mock, :send_raw_email, fn message ->
         assert message["RawMessage"]["Data"]

test/routes/populate_caches_test.exs

@@ -42,6 +42,7 @@ defmodule Routes.PopulateCachesTest do
   end
 
   describe "handle_info/2" do
+    @tag :flaky
     test "populate_all: gets headsigns and shapes for each route" do
       assert {:noreply, FakeRepo} = handle_info(:populate_all, FakeRepo)
 

test/test_helper.exs

@@ -7,7 +7,7 @@ Application.ensure_all_started(:ex_machina)
 Application.ensure_all_started(:mox)
 Application.ensure_all_started(:tzdata)
 
-ExUnit.configure(exclude: [external: true])
+ExUnit.configure(exclude: [external: true, flaky: true])
 ExUnit.configure(formatters: [ExUnit.CLIFormatter, ExUnitSummary.Formatter])
 
 ExUnit.start(capture_log: true)

test/util/util_test.exs

@@ -376,6 +376,7 @@ defmodule UtilTest do
       assert log =~ "Async task timed out"
     end
 
+    @tag :flaky
     test "retries request according to param, then returns the default for timeouts" do
       set_retries = 2