From 8c9d792c42c1c6616016d311a0653d5704c162f4 Mon Sep 17 00:00:00 2001
From: Nora Widdecke <nora@sequoia-pgp.org>
Date: Thu, 27 Oct 2022 21:59:25 +0200
Subject: [PATCH] ci: prevent multithreading for subplot tests

  - There is only one virtual card, accessing it from multiple programs
    in parallel leads to undefined behavior.
---
 .gitlab-ci.yml             | 2 +-
 tools/cargo-test-in-docker | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 3619570..8380575 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -149,7 +149,7 @@ subplot:
   script:
     # make sure a virtual card is available, so that the subplot tests are
     # generated
-    - CARD_BASED_TESTS=true cargo test
+    - CARD_BASED_TESTS=true cargo test -- --test-threads 1
   cache:
     # inherit all general cache settings
     <<: *general_cache_config
diff --git a/tools/cargo-test-in-docker b/tools/cargo-test-in-docker
index acece79..b369ac8 100755
--- a/tools/cargo-test-in-docker
+++ b/tools/cargo-test-in-docker
@@ -23,4 +23,4 @@ su - -c "sh /home/jcardsim/run-card.sh >/dev/null" jcardsim &&
 cd /src/tools &&
 CARGO_TARGET_DIR=/cargo/ cargo update &&
 CARGO_TARGET_DIR=/cargo/ cargo build -vv &&
-CARGO_TARGET_DIR=/cargo/ cargo test'
+CARGO_TARGET_DIR=/cargo/ cargo test -- --test-threads 1'