File 0921-time_SUITE-skip-tz-specific-tests-when-run... of Package erlang

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File 0921-time_SUITE-skip-tz-specific-tests-when-running-out-o.patch of Package erlang (Revision b4f72044e1af8cfe32130ab849a401a1)

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From 9070492df0fe193ef721e5c193111223dca2df89 Mon Sep 17 00:00:00 2001
From: Maxim Fedorov <dane@whatsapp.com>
Date: Mon, 28 Feb 2022 21:24:12 -0800
Subject: [PATCH] time_SUITE: skip tz-specific tests when running out of
 Stockholm

These tests always fail when running in any timezone other
than Stockholm.
---
 erts/emulator/test/time_SUITE.erl | 24 ++++++++++++++++++++++--
 1 file changed, 22 insertions(+), 2 deletions(-)

diff --git a/erts/emulator/test/time_SUITE.erl b/erts/emulator/test/time_SUITE.erl
index 36f67e086d..c5ad735688 100644
--- a/erts/emulator/test/time_SUITE.erl
+++ b/erts/emulator/test/time_SUITE.erl
@@ -130,9 +130,26 @@ local_to_univ_utc(Config) when is_list(Config) ->
 
 
 %% Tests conversion from universal to local time.
+%% These cases are currently implemented only for MET and fail in
+%%  all other timezones
+is_stockholm_time() ->
+    case os:type() of
+        {win32, _} -> case os:cmd("tzutil /g") of
+                          "W. Europe Standard Time"++_ -> true;
+                          _ -> false
+                      end;
+        {unix, _} -> case os:cmd("date '+%Z'") of
+                          "ME"++_ -> true; %% covers MET/MEST
+                          "CE"++_ -> true; %% covers CET/CEST
+                          _ -> false
+                      end
+    end.
 
 univ_to_local(Config) when is_list(Config) ->
-    test_univ_to_local(test_data()).
+    case is_stockholm_time() of
+        true -> test_univ_to_local(test_data());
+        false -> {skip, "This test is only valid for Stockholm timezone"}
+    end.
 
 test_univ_to_local([{Utc, Local}|Rest]) ->
     io:format("Testing ~p => ~p~n", [Local, Utc]),
@@ -144,7 +161,10 @@ test_univ_to_local([]) ->
 %% Tests conversion from local to universal time.
 
 local_to_univ(Config) when is_list(Config) ->
-    test_local_to_univ(test_data()).
+    case is_stockholm_time() of
+        true -> test_local_to_univ(test_data());
+        false -> {skip, "This test is only valid for Stockholm timezone"}
+    end.
 
 test_local_to_univ([{Utc, Local}|Rest]) ->
     io:format("Testing ~p => ~p~n", [Utc, Local]),
-- 
2.34.1

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File 0921-time_SUITE-skip-tz-specific-tests-when-running-out-o.patch of Package erlang (Revision b4f72044e1af8cfe32130ab849a401a1)

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