use runInBand in CI

.github/workflows/test.yml

@@ -54,7 +54,7 @@ jobs:
       - run: yarn --frozen-lockfile
       - run: yarn link --frozen-lockfile || true
       - run: yarn link webpack --frozen-lockfile
-      - run: yarn test:basic --ci
+      - run: yarn test:basic --ci --runInBand
       - uses: codecov/codecov-action@v1
         with:
           flags: basic
@@ -82,7 +82,7 @@ jobs:
           path: .jest-cache
           key: jest-unit-${{ env.GITHUB_SHA }}
           restore-keys: jest-unit-
-      - run: yarn cover:unit --ci --cacheDirectory .jest-cache
+      - run: yarn cover:unit --ci --runInBand --cacheDirectory .jest-cache
       - uses: codecov/codecov-action@v1
         with:
           flags: unit
@@ -121,7 +121,7 @@ jobs:
           path: .jest-cache
           key: jest-integration-${{ env.GITHUB_SHA }}
           restore-keys: jest-integration-
-      - run: yarn cover:integration --ci --cacheDirectory .jest-cache
+      - run: yarn cover:integration --ci --runInBand --cacheDirectory .jest-cache
       - run: yarn cover:merge
       - uses: codecov/codecov-action@v1
         with:

.travis.yml

@@ -1,74 +0,0 @@
-dist: trusty
-language: node_js
-
-branches:
-  only:
-    - webpack-4
-    - main
-    - next
-    - dev-1
-
-cache:
-  yarn: true
-  directories:
-    - ".jest-cache"
-    - ".eslintcache"
-
-stages:
-  - basic
-  - advanced
-
-matrix:
-  include:
-    - os: linux
-      node_js: "12"
-      env: NO_WATCH_TESTS=1 JEST="--maxWorkers=2 --cacheDirectory .jest-cache" JOB_PART=basic
-      stage: basic
-    - os: linux
-      node_js: "12"
-      env: NO_WATCH_TESTS=1 JEST="--maxWorkers=2 --cacheDirectory .jest-cache" JOB_PART=lintunit
-      stage: advanced
-    - os: linux
-      node_js: "12"
-      env: NO_WATCH_TESTS=1 JEST="--maxWorkers=2 --cacheDirectory .jest-cache" JOB_PART=integration
-      stage: advanced
-    - os: linux
-      node_js: "12"
-      env: NO_WATCH_TESTS=1 ALTERNATIVE_SORT=1 JEST="--maxWorkers=2 --cacheDirectory .jest-cache" JOB_PART=integration
-      stage: advanced
-    - os: linux
-      node_js: "10"
-      env:
-        - NODEJS_VERSION=v15.0.0-nightly2020082003293aa3a1
-        - YARN_EXTRA_ARGS="--ignore-engines"
-        - NO_WATCH_TESTS=1
-        - JEST="--maxWorkers=2 --cacheDirectory .jest-cache"
-        - JOB_PART=integration
-      stage: advanced
-  fast_finish: true
-
-before_install:
-  - |
-    if [ "$NODEJS_VERSION" != "" ];
-    then
-      mkdir /opt/node
-      curl --silent "https://nodejs.org/download/nightly/$NODEJS_VERSION/node-$NODEJS_VERSION-linux-x64.tar.gz" | tar -zxf - --directory /opt/node
-      export PATH="/opt/node/node-$NODEJS_VERSION-linux-x64/bin:$PATH"
-      node --version
-    fi
-
-install:
-  - yarn --frozen-lockfile $YARN_EXTRA_ARGS
-  - yarn link --frozen-lockfile $YARN_EXTRA_ARGS || true
-  - yarn link webpack --frozen-lockfile $YARN_EXTRA_ARGS
-
-script: yarn travis:$JOB_PART
-
-after_success:
-  - cat ./coverage/lcov.info | node_modules/.bin/coveralls --verbose
-  - bash <(curl -s https://codecov.io/bash) -F $JOB_PART -X gcov
-  - rm -f .jest-cache/haste-map* .jest-cache/perf-cache*
-
-notifications:
-  slack:
-    secure: JduSdKWwbnLCwo7Z4E59SGE+Uw832UwnXzQiKEpg1BV45MYDPRiGltly1tRHmPh9OGjvGx3XSkC2tNGOBLtL4UL2SCkf012x0t7jDutKRfcv/njynl8jk8l+UhPmaWiHXDQAgGiiKdL4RfzPLW3HeVHCOWm0LKMzcarTa8tw+rE=

appveyor.yml

@@ -29,7 +29,7 @@ matrix:
 test_script:
   - node --version
   - yarn --version
-  - cmd: set JEST=--maxWorkers=2 --cacheDirectory .jest-cache
+  - cmd: set JEST=--runInBand --cacheDirectory .jest-cache
   - cmd: yarn appveyor:integration
   - cmd: yarn cover:report --reporter=lcovonly
   - cmd: yarn unlink webpack

azure-pipelines.yml

@@ -35,7 +35,7 @@ jobs:
           set -e
           export PATH="$HOME/.yarn/bin:$HOME/.config/yarn/global/node_modules/.bin:$PATH"
           export JEST_JUNIT_OUTPUT_NAME=basic-junit.xml
-          yarn test:basic --ci --reporters=default --reporters=jest-junit
+          yarn test:basic --ci --runInBand --reporters=default --reporters=jest-junit
           export JEST_JUNIT_OUTPUT_NAME=unit-junit.xml
           yarn test:unit --ci --reporters=default --reporters=jest-junit
         displayName: "Run basic tests"
@@ -138,7 +138,7 @@ jobs:
       - script: yarn link webpack --frozen-lockfile
         displayName: "Link webpack into node_modules"
       - script: |
-          yarn cover:integration --ci --maxWorkers=2 --reporters=default --reporters=jest-junit
+          yarn cover:integration --ci --runInBand --reporters=default --reporters=jest-junit
           yarn cover:merge
         displayName: "Run tests with coverage"
       - task: PublishTestResults@2
@@ -193,7 +193,7 @@ jobs:
       - script: |
           set -e
           export PATH="$HOME/.yarn/bin:$HOME/.config/yarn/global/node_modules/.bin:$PATH"
-          yarn cover:integration --ci --maxWorkers=2 --reporters=default --reporters=jest-junit
+          yarn cover:integration --ci --runInBand --reporters=default --reporters=jest-junit
           yarn cover:merge
         displayName: "Run tests with coverage"
       - task: PublishTestResults@2
@@ -245,7 +245,7 @@ jobs:
       - script: |
           set -e
           export PATH="$HOME/.yarn/bin:$HOME/.config/yarn/global/node_modules/.bin:$PATH"
-          yarn cover:integration --ci --reporters=default --reporters=jest-junit
+          yarn cover:integration --ci --runInBand --reporters=default --reporters=jest-junit
           yarn cover:merge
         displayName: "Run tests with coverage"
       - task: PublishTestResults@2