Repo to illustrate jestjs/jest#6063, uses code from https://github.com/vladgolubev/jest-mongodb.
Running yarn test will run Jest tests in parallel, and fail:
▶ yarn jest
yarn run v1.5.1
$ /Users/ojongerius/repos/jest-bug/node_modules/.bin/jest
RUNS ./mongo-insert.test.js
FAIL ./mongo-aggregate.test.js
● Test suite failed to run
TypeError: Cannot read property 'getConnectionString' of undefined
9 | console.log('Setup MongoDB Test Environment');
10 |
> 11 | this.global.__MONGO_URI__ = await global.__MONGOD__.getConnectionString();
12 | this.global.__MONGO_DB_NAME__ = global.__MONGO_DB_NAME__;
13 |
14 | await super.setup();
at MongoEnvironment.setup (mongo-environment.js:11:57)
FAIL ./mongo-insert.test.js
● Test suite failed to run
TypeError: Cannot read property 'getConnectionString' of undefined
9 | console.log('Setup MongoDB Test Environment');
10 |
> 11 | this.global.__MONGO_URI__ = await global.__MONGOD__.getConnectionString();
12 | this.global.__MONGO_DB_NAME__ = global.__MONGO_DB_NAME__;
13 |
14 | await super.setup();
at MongoEnvironment.setup (mongo-environment.js:11:57)
Test Suites: 2 failed, 2 total
Tests: 0 total
Snapshots: 0 total
Time: 0.454s
Ran all test suites.
Teardown mongod
error An unexpected error occurred: "Command failed.
Exit code: 1
Command: sh
Arguments: -c /Users/ojongerius/repos/jest-bug/node_modules/.bin/jest
Directory: /Users/ojongerius/repos/jest-bug
Output:
".
info If you think this is a bug, please open a bug report with the information provided in "/Users/ojongerius/repos/jest-bug/yarn-error.log".
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.Running in band will succeed:
▶ yarn test-inband
yarn run v1.5.1
$ jest --runInBand --no-cache
Setup MongoDB Test Environment
PASS ./mongo-insert.test.js
Teardown MongoDB Test Environment
Setup MongoDB Test Environment
PASS ./mongo-aggregate.test.js
Test Suites: 2 passed, 2 total
Tests: 3 passed, 3 total
Snapshots: 0 total
Time: 1.168s
Ran all test suites.
Teardown mongod
Teardown MongoDB Test Environment
✨ Done in 3.10s.