How do you mock an outer method calling a callback using sinon? Example given the following code, createTable should return 'a string' as response in the callback function.
const db= new AWS.DynamoDB();
db.createTable(params, (err, data) => {
if (err) {
console.error('Unable to create table. Error JSON:');
if (err.code !== 'ResourceInUseException') reject();
else {
console.log('Table already exists, proceeding.');
resolve();
return;
}
} else {
console.log('Created table. Table description JSON:');
}
console.log('Waiting for DDB Table to get created');
});
Below is sample unit test that I've worked
beforeEach(()) => {
DynamoDBMock = class DynamoDB {
constructor() {
this.createTable = () => ({
promise: createTableStub,
});
}
};
});
it('should return', done => {
createTableStubPromise.callsArgWith(1, null, 'test');
createTableStubPromise.callsArgWith(1, null, 'test');
});
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