Some changes to experimental script

* `sleep infinity` doesn't work on Mac so changed to sleep loop.
* Build assets first, then run all workers in parallel to avoid excessive RAM usage (on Mac still make sure you allocate enough RAM to Docker)

.travis/test_locally.sh

@@ -1,79 +1,76 @@
 #!/bin/bash
 set -e
 
+export TW_PATH=$(git rev-parse --show-toplevel)
+
 sed -i -e 's/^\s*spec\s*$//' .dockerignore
 echo "spec/fixtures/vcr_cassettes" >> .dockerignore
 
 cp Gemfile Gemfile.lock package.json package-lock.json .travis
 
-export TW_BUILD_ARGS="\
+TW_BUILD_ARGS="\
   --build-arg UID=$(id -u) --build-arg GID=$(id -g) \
   --build-arg RUBY_VERSION=$(cat Gemfile | grep -e "^ruby\s*.*$" | sed -E "s/[^']*'([^']*)'/ruby-\1/") \
   --build-arg BUNDLER_VERSION=$(tail -n1 Gemfile.lock | tr -d '[:space:]')"
 
 docker build --target tw-travis-base -t tw-travis-base .travis $TW_BUILD_ARGS
-docker run -it tw-travis-base true
-docker image prune --all -f
 docker build -t tw-travis -f .travis/Dockerfile . $TW_BUILD_ARGS
 
 rm .travis/Gemfile .travis/Gemfile.lock .travis/package.json .travis/package-lock.json
 git checkout .dockerignore
 
+mkdir -p $TW_PATH/public/packs-test
+mkdir -p $TW_PATH/public/assets
+mkdir -p $TW_PATH/tmp/cache/webpacker
+
+DOCKER_ARGS='-d \
+  --env TEST_WORKER=$TEST_WORKER --env TEST_WORKERS=5 --env RAILS_ENV=test \
+      -v "$TMP_PATH/spec/fixtures/vcr_cassettes":/home/travis/app/spec/fixtures/vcr_cassettes \
+      -v "$TW_PATH/public/packs-test":/home/travis/app/public/packs-test \
+      -v "$TW_PATH/public/assets":/home/travis/app/public/assets \
+      -v "$TW_PATH/tmp/cache":/home/travis/app/tmp/cache \
+'
+
+# Build assets first
+export TEST_WORKER=no
+export TMP_PATH=/tmp
+eval "docker run $DOCKER_ARGS --name tw_container tw-travis"
+docker exec -it tw_container bash -l -c "bundle exec rake assets:precompile"
+docker rm -f tw_container
+
 for TEST_WORKER in `seq 0 4`; do
   export TMP_PATH=/tmp/tw_test_worker_$TEST_WORKER
 
   mkdir -p $TMP_PATH/spec/fixtures/vcr_cassettes
-  mkdir -p $TMP_PATH/public/packs-test
-  mkdir -p $TMP_PATH/public/assets
-  mkdir -p $TMP_PATH/tmp/cache/webpacker
 
-  docker run -d --env TEST_WORKER=$TEST_WORKER --env TEST_WORKERS=5 --env RAILS_ENV=test \
-    -v "$TMP_PATH/spec/fixtures/vcr_cassettes":/home/travis/app/spec/fixtures/vcr_cassettes \
-    -v "$TMP_PATH/public/packs-test":/home/travis/app/public/packs-test \
-    -v "$TMP_PATH/public/assets":/home/travis/app/public/assets \
-    -v "$TMP_PATH/tmp/cache":/home/travis/app/tmp/cache \
-    --name tw_container_$TEST_WORKER \
-    tw-travis
+  eval "docker run $DOCKER_ARGS --name tw_container_$TEST_WORKER tw-travis"
 
   until docker exec -it tw_container_$TEST_WORKER sudo -u postgres psql -c \
     'CREATE ROLE travis SUPERUSER CREATEDB CREATEROLE INHERIT LOGIN;'; \
   do sleep 1; done
 done
 
+CMDS='\
+echo ===[TEST_WORKER=$TEST_WORKER before_script $(date -u +%Y%m%d-%H%M%S)]=== \
+&& docker exec -it tw_container_$TEST_WORKER bash -l -c "bundle exec rake db:create" \
+&& docker exec -it tw_container_$TEST_WORKER bash -l -c "bundle exec rake db:migrate" \
+&& docker exec -it tw_container_$TEST_WORKER bash -l -c ".travis/spec_runner.sh"; \
+docker rm -f tw_container_$TEST_WORKER; while true; do sleep 86400; done \
+'
 
-tmux new-session '\
+tmux new-session "\
       export TEST_WORKER=0
-      echo ===[TEST_WORKER=$TEST_WORKER before_script $(date -u +%Y%m%d-%H%M%S)]=== \
-      && docker exec -it tw_container_$TEST_WORKER bash -l -c "bundle exec rake db:create" \
-      && docker exec -it tw_container_$TEST_WORKER bash -l -c "bundle exec rake db:migrate" \
-      && docker exec -it tw_container_$TEST_WORKER bash -l -c ".travis/spec_runner.sh"; \
-      docker rm -f tw_container_$TEST_WORKER; sleep infinity' \; \
-    split-window '\
+      $CMDS" \; \
+    split-window "\
       export TEST_WORKER=1
-      echo ===[TEST_WORKER=$TEST_WORKER before_script $(date -u +%Y%m%d-%H%M%S)]=== \
-      && docker exec -it tw_container_$TEST_WORKER bash -l -c "bundle exec rake db:create" \
-      && docker exec -it tw_container_$TEST_WORKER bash -l -c "bundle exec rake db:migrate" \
-      && docker exec -it tw_container_$TEST_WORKER bash -l -c ".travis/spec_runner.sh"; \
-      docker rm -f tw_container_$TEST_WORKER; sleep infinity' \; \
-    split-window '\
+      $CMDS" \; \
+    split-window "\
       export TEST_WORKER=2
-      echo ===[TEST_WORKER=$TEST_WORKER before_script $(date -u +%Y%m%d-%H%M%S)]=== \
-      && docker exec -it tw_container_$TEST_WORKER bash -l -c "bundle exec rake db:create" \
-      && docker exec -it tw_container_$TEST_WORKER bash -l -c "bundle exec rake db:migrate" \
-      && docker exec -it tw_container_$TEST_WORKER bash -l -c ".travis/spec_runner.sh"; \
-      docker rm -f tw_container_$TEST_WORKER; sleep infinity' \; \
-    split-window '\
+      $CMDS" \; \
+    split-window "\
       export TEST_WORKER=3
-      echo ===[TEST_WORKER=$TEST_WORKER before_script $(date -u +%Y%m%d-%H%M%S)]=== \
-      && docker exec -it tw_container_$TEST_WORKER bash -l -c "bundle exec rake db:create" \
-      && docker exec -it tw_container_$TEST_WORKER bash -l -c "bundle exec rake db:migrate" \
-      && docker exec -it tw_container_$TEST_WORKER bash -l -c ".travis/spec_runner.sh"; \
-      docker rm -f tw_container_$TEST_WORKER; sleep infinity' \; \
-    split-window '\
+      $CMDS" \; \
+    split-window "\
       export TEST_WORKER=4
-      echo ===[TEST_WORKER=$TEST_WORKER before_script $(date -u +%Y%m%d-%H%M%S)]=== \
-      && docker exec -it tw_container_$TEST_WORKER bash -l -c "bundle exec rake db:create" \
-      && docker exec -it tw_container_$TEST_WORKER bash -l -c "bundle exec rake db:migrate" \
-      && docker exec -it tw_container_$TEST_WORKER bash -l -c ".travis/spec_runner.sh"; \
-      docker rm -f tw_container_$TEST_WORKER; sleep infinity' \; \
+      $CMDS" \; \
     select-layout even-vertical