I need to test whether a pre-signed url to bucket Amazon S3 was returned.
The Jest show the message below when run yarn test
:
ReferenceError: You are trying to `import` a file after the Jest environment has been torn down.
at Object.userAgent (node_modules/aws-sdk/lib/util.js:34:43)
at HttpRequest.setUserAgent (node_modules/aws-sdk/lib/http.js:111:78)
at new HttpRequest (node_modules/aws-sdk/lib/http.js:104:10)
at MetadataService.request (node_modules/aws-sdk/lib/metadata_service.js:93:23)
at MetadataService.fetchMetadataToken (node_modules/aws-sdk/lib/metadata_service.js:116:10)
That's the test:
index.spec.js
const AWS = require('aws-sdk');
const bucketName = 'bucket';
const key = 'image.png';
describe('Test', () => {
it('should be able return pre signed url', () => {
const s3SigV4Client = new AWS.S3({
signatureVersion: 'v4',
});
const s3PreSignedUrl = s3SigV4Client.getSignedUrl('getObject', {
Bucket: bucketName,
Key: key,
Expires: 60,
});
expect(s3PreSignedUrl);
});
});
package.json
{
"name": "test_aws_sdk",
"version": "1.0.0",
"main": "index.js",
"license": "MIT",
"scripts": {
"test": "jest"
},
"dependencies": {
"aws-sdk": "^2.807.0"
},
"devDependencies": {
"jest": "^26.6.3"
}
}
Node.js and Yarn version installed:
$ node -v
v10.19.0
$ yarn -v
1.22.4
There's something I did wrong. 🤔
Please can you help me?
After the imports, add jest.useFakeTimers()
in your test file:
Example:
const AWS = require('aws-sdk');
jest.useFakeTimers()
const bucketName = 'bucket';
const key = 'image.png';
describe('Test', () => {
it('should be able return pre signed url', async () => {
const s3SigV4Client = new AWS.S3({
signatureVersion: 'v4',
});
const s3PreSignedUrl = s3SigV4Client.getSignedUrl('getObject', {
Bucket: bucketName,
Key: key,
Expires: 60,
});
expect(s3PreSignedUrl);
});
});