Yes, you can write tests for Pulumi code. Pulumi supports integration testing and unit testing, allowing you to validate and verify your Infrastructure as Code (IaC) before deploying it. You can write tests in the same language as your Pulumi code, like Python, TypeScript, or Go.
Here's an example of how to write unit tests for Pulumi code in Python:
First, make sure you have pulumi, pytest, and pulumi-aws (or other relevant pulumi provider) installed. You can install them using pip:
pip install pulumi pulumi-aws pytest
Create a simple Pulumi stack in a file called __main__.py:
import pulumi
import pulumi_aws as aws
# Create an AWS S3 bucket
bucket = aws.s3.Bucket('my-bucket')
# Export the bucket name
pulumi.export('bucket_name', bucket.id)
Create a test_infrastructure.py file for your unit tests:
import pulumi
import pulumi_aws as aws
from pulumi_aws import s3
from pulumi import ResourceOptions
import pytest
from unittest import mock
# Test for S3 bucket creation
def test_s3_bucket():
# Mock the Pulumi runtime
with mock.patch.object(pulumi.runtime, 'register_resource') as register_resource_mock:
with mock.patch.object(pulumi.runtime, 'register_outputs') as register_outputs_mock:
# Create the bucket
from __main__ import bucket
# Assert that the expected resource is registered
register_resource_mock.assert_called_once_with(
'aws:s3/bucket:Bucket',
'my-bucket',
{'acl': None, 'tags': None},
None,
False,
ResourceOptions()
)
# Assert that the bucket name is registered as an output
register_outputs_mock.assert_called_once_with({'bucket_name': pulumi.Output(bucket.id)})
Run your tests with pytest:
pytest
This is just a simple example. Depending on your use case and the complexity of your infrastructure, you may want to write more extensive tests or integration tests. Pulumi's testing guide provides more detailed information and examples for different languages and use cases: https://www.pulumi.com/docs/guides/testing/.
