CODEWITHSUNDEEP
mocha.jsamazon-dynamodbchai
Ravikanth Andhavarapu
Ravikanth Andhavarapu

Reputation: 716

Writing tests with local dynamodb using mocha

I am using Dynamodb for an api service I am writing. I started writing tests and I found that there is no command(or query) which destroys all the "items" in a table. I am using vogels to access dynamodb.

I usually clean the table before every test. How do I do that given that there is no single command( or query) that deletes all the items in a table?

If I delete each item one by one the tests start executing before all the items get deleted.

Upvotes: 4

Views: 532

Answers (1)

notionquest
notionquest

Reputation: 39176

The CRUD operation is atomic in DynamoDB. There is no API available to delete all the items in the DynamoDB table.

Solution 1:

The best recommended solution is to delete the table and recreate it.

Solution 2:

Use batchWriteItem with DeleteRequest for deleting multiple items in one go. The maximum number of requests on batch write is 25 items.

Wait for:-

After executing the delete table, please wait until the resource is not available. Similarly, after executing the create table, you need to wait until the resource is available.

var params = {
  TableName: 'STRING_VALUE' /* required */
};
dynamodb.waitFor('tableNotExists', params, function(err, data) {
  if (err) console.log(err, err.stack); // an error occurred
  else     console.log(data);           // successful response
});

Waits for the tableNotExists state by periodically calling the underlying DynamoDB.describeTable() operation every 20 seconds (at most 25 times).

Upvotes: 1

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