How to test AWS integration services flow? - amazon-web-services

Question

I got the following flow:
Put file to S3
Triggered Lambda function
DynamoDB table
Due to this flow, I created an integration test which first put a file to S3.
After that, I checked the record over the DynamoDB table which been updated by the Lambda function.
The problem occures when I'm searching for my record, actually I couldn't find it because there is some time interval that I need to wait for the table to be updated. In the second run I was able to see the record from the previous test run.
My question is how can I make this integration test? How can I check for the updated table records after which needs to be inserted after some time using the lambda trigger call.
What I tried so far:
Use Promise
Use setTimeout()
These weren't good enough for me, Please advice some better approach.
My code:
it('Writing single record to DynamoDB - when data is valid JSON and updating the DB is Succeed',
function(done) {
var putObjectParams = {
Bucket: BUCKET,
Key: FILE_KEY,
Body: 'some file content'
};
s3.putObject(putObjectParams, function(err, data) {
if (err) {
console.log(err, err.stack);
} else {
console.log(JSON.stringify(data));
}
});
var docClient = new AWS.DynamoDB.DocumentClient();
var queryParams = {
TableName: ENV + "-WFMHistoricalUnprocessedFiles",
ProjectionExpression: "filePath, ingressTime, dir, fileName",
KeyConditionExpression: "#column = :fileFullPath",
ExpressionAttributeNames: {
"#column": "filePath"
},
ExpressionAttributeValues: {
":fileFullPath": BUCKET + "/" + FILE_KEY
}
};
docClient.query(queryParams, function(err, data) {
if (err) {
console.log("Unable to query. Error:", JSON.stringify(err, null, 2));
} else {
console.log("Query succeeded.");
data.Items.forEach(function(item) {
console.log(JSON.stringify(item));
});
}
});
});