I am trying to mock SQS call defined in my file.js. It is a global instance in the file. So, while testing as I have to require file.js, its instance is set and my mock method is not called. However, if I set that SQS instance locally in the function inside which it is required, I am able to mock. But that would be wrong as that instance will be set every time that method is called. How can I mock SQS in my test? I have tried all the ways which were given there in the issues. None of them is working for me.
//file.js
const AWS = require('aws-sdk');
const sqs = new AWS.SQS();
const queueURL = config.sqs_connect.queue_url;
const params = {
MaxNumberOfMessages: 10,
QueueUrl: queueURL
};
exports.receiveMessages = async function () {
// let sqs = new AWS.SQS();
return new Promise((resolve, reject) => {
sqs.receiveMessage(params, function (err, data) {
if (err) {
console.log("error")
reject(err);
} else if (data.Messages) {
try {
consumeAndDeleteMessages(data.Messages, err => {
if (err) reject(err);
else resolve();
});
} catch (error) {
reject(error);
}
} else {
// logger.log("No data in queue");
resolve();
}
});
})
}
// file.test.js
const AWS = require('aws-sdk');
const consumer = require('path-to-file');
describe("foo", () => {
it("updates all info", async () => {
let delete_stack = [];
AWSMock.setSDKInstance(AWS);
AWSMock.mock('SQS', 'receiveMessage', (params, callback) => {
callback(null, { Messages: [{ MessageId: '1234', ReceiptHandle: 'qwertyu', Body: JSON.stringify(update_payload) }] });
});
AWSMock.mock('SQS', 'deleteMessageBatch', (params, callback) => {
delete_stack.push(params.Entries);
callback(null, {});
});
await consumer.receiveMessages();
AWSMock.restore('SQS');
expect(delete_stack).toStrictEqual([
[{ "Id": "1234", "ReceiptHandle": "qwertyu" }]
]);
});
});
If I define sqs locally in receiveMessage, the test will work file. I have tried all the ways provided, none of them is working. Am I doing something wrong?