pytest-dynamodb

Package status

What is this?

This is a pytest plugin, that enables you to test your code that relies on a running DynamoDB Database. It allows you to specify fixtures for DynamoDB process and client (resource in AWS boto terms).

How to use

Warning

Please download the DynamoDB database locally.

Plugin contains two fixtures

• dynamodb - it's a client/resource fixture that has functional scope. After each test it drops tables in DynamoDB.
• dynamodb_proc - session scoped fixture, that starts DynamoDB instance at it's first use and stops at the end of the tests.

Simply include one of these fixtures into your tests fixture list.

You can also create additional dynamodb client and process fixtures if you'd need to:

from pytest_dynamodb import factories

dynamodb_my_proc = factories.dynamodb_proc(
    port=None, logsdir='/tmp', delay=True)
dynamodb_my = factories.dynamodb('dynamodb_my_proc')

Note

Each DynamoDB process fixture can be configured in a different way than the others through the fixture factory arguments.

Configuration

You can define your settings in three ways, it's fixture factory argument, command line option and pytest.ini configuration option. You can pick which you prefer, but remember that these settings are handled in the following order:

• Fixture factory argument
• Command line option
• Configuration option in your pytest.ini file

Configuration options

DynamoDB option	Fixture factory argument	Command line option	pytest.ini option	Default
Path to dynamodb jar file	dynamodb_dir	--dynamodb-dir	dynamodb_dir	/tmp/dynamodb
host	host	--dynamodb-host	dynamodb_host	127.0.0.1
port	port	--dynamodb-port	dynamodb_port	random
AWS Access Key	access_key	--dynamodb-aws_access_key	dynamodb_aws_access_key	fakeMyKeyId
AWS Secret Key	secret_key	--dynamodb-aws_secret_key	dynamodb_aws_secret_key	fakeSecretAccessKey
AWS Region	region	--dynamodb-aws_region	dynamodb_aws_region	us-west-1
Introduce delays	delay	--dynamodb-delay	dynamodb_delay	false

Example usage:

• pass it as an argument in your own fixture

  dynamodb_proc = factories.dynamodb_proc(
      port=8888)

• use --dynamodb-port command line option when you run your tests

  py.test tests --dynamodb-port=8888
  

• specify your port as dynamodb_port in your pytest.ini file.

  To do so, put a line like the following under the [pytest] section of your pytest.ini:

  [pytest]
  dynamodb_port = 8888

Package resources

• Bug tracker: https://github.com/ClearcodeHQ/pytest-dynamodb/issues