I am using document db with node.js and working on unit tests the "get" request.
I have mocked the data using mongo-mock (version 4.0.0). Added a jest unit test for the "get" request in node.js.

I could mock the data db data correctly (referred the demo example of npm mongo-mock) but while fetching the data with .find() it is giving an error which says "result is not iterable". This error doesn't occur in real time scenario, only happening in unit tests. Below is the code :

const result = await dbData.find(filter);
for await (let item of result) {

In result I see the correct data in count variable however it throws exception at "for" statement. I have mocked the data like below:

MongoClient.connect(url, {}, function(err, client) {
var db = client.db(""mydb);
// Get the documents collection
var collection = db.collection("myCollection");
// Insert some documents
var docs = "{"_id": "dbCollectionRecId",
"testtId": "testId"}";
//collection.insertOne(docs);
//insertMany
collection.insertOne(docs, function(err, result) {
console.log('inserted',result);
}
}

Let me know if I am missing anything.