jest is not terminating, giving error when used jest with mongo-mock

[sagargadekar601]

I am getting below error when I run 'npm run test' :

"Jest did not exit one second after the test run has completed.

This usually means that there are asynchronous operations that weren't stopped in your tests. Consider running Jest with --detectOpenHandles to troubleshoot this issue."

Tried running jest with --detectOpenHandles but still the same issue.
Below is my code :

var mongodb = require("mongo-mock");
mongodb.max_delay = 10; //you can choose to NOT pretend to be async (default is 400ms)
var MongoClient = mongodb.MongoClient;
MongoClient.persist = "mongo.js"; //persist the data to disk

// Connection URL
var url = "mongodb://localhost:27017/myproject";

describe("test set", () => {
beforeAll(done => {
// Use connect method to connect to the Server
MongoClient.connect(
url,
{
sslValidate: false,
useNewUrlParser: true,
sslCA: fs.readFileSync("./rds-combined-ca-bundle.certs")
},
async function (err, client) {
if (err) {
debug(Failed to connect to the database. ${err.stack});
} else {
app.locals.dbClient = client;
done();
}
}
);
//done();
});

afterAll(done => {
// Closing the DB connection allows Jest to exit successfully.
try {
app.locals.dbClient.db().close();
app.locals.dbClient.close();
done();
} catch (error) {
console.log(error);
done();
}
// done()
});

describe('POST request', () => {
test("test POST query", async () => {
var bodyData = mockData.test_SingleData;
var response = await request
.post(/)
.send(bodyData);
expect(response.statusCode).toBe(200);
//done();
});
});

});

test case run successfully but somehow its not turminated,. Help please.

[beamery-tomht]

I have exactly the same issue.

My tests are hanging and if I log the steps I can see that the beforeEach block isn't respecting your "async" code.

      beforeEach((done) => {
        const db = STUBS.mongoClient.db();
        const collection = db.collection('foo'); // executes before the test. Good.
        collection.insertMany(
          [foo1, foo2],
          () => {
            const j = collection.toJSON(); // executes after the test... Bad!
            done();
          },
        );
      }, 10000);

Also with async, same behaviour

      beforeEach(async () => {
        const db = await STUBS.mongoClient.db();
        const collection = db.collection('foo'); // executes before the test
        await collection.insertMany([foo1, foo2]);
        const j = collection.toJSON(); // executes AFTER the test...
      });

Seems like some internal promise hacking is conflicting with jest.

[ollixx]

this works for me:

describe('test using mongo-mock', () => {
    var db, client;

    beforeAll(async () => {
        var mongoUrl = process.env.MONGODB_URL || 'mongodb://localhost:27017/myproject';
        client = await mongoClient.connect(mongoUrl, {});
        db = client.db();
        var collection = db.collection('documents');
       // prepare data ....
    });

    afterAll(() => {
        db.close();
        client.close();
    });

    // tests come here....
});