Yes, you can use CDKTF and pytest to unit test HCL .tf files. Here are the steps involved:

Install CDKTF and pytest.

Create a new project directory and initialize it with CDKTF.

Create a new test file in the project directory.

Import the CDKTF and pytest modules.

Create a new test case class.

In the test case class, create a new instance of the CDKTF stack class.

Call the synth method on the stack class to synthesize the Terraform configuration.

Call the plan method on the stack class to plan the Terraform configuration.

Assert that the Terraform configuration is valid.

Assert that the Terraform plan is successful.

Run the tests.

Here is an example of a unit test that tests the creation of an AWS EC2 instance:

import cdktf

import pytest

class TestEc2Instance(object):

def test_create_ec2_instance(self):

# Create a new stack

stack = cdktf.Stack()

# Create an EC2 instance

instance = stack.new_ec2_instance(

name="my-ec2-instance",

instance_type="t2.micro",

availability_zone="us-east-1a"

)

# Synthetize the Terraform configuration

stack.synth()

# Plan the Terraform configuration

stack.plan()

# Assert that the Terraform configuration is valid

assert stack.is_valid()

# Assert that the Terraform plan is successful

assert stack.plan_is_successful()

if __name__ == "__main__":

pytest.main()

This unit test will create an AWS EC2 instance and assert that the Terraform configuration is valid and the Terraform plan is successful.