Testcase fails if Docker is not running

[ansgarm]

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This testcase fails if Docker is not running: https://github.com/hashicorp/terraform-cdk/blob/a5d0380585abee49c9ffbaa7fa6454aa186d07f8/packages/cdktf/lib/testing/tests/matchers.test.ts#L246-L256

But as these logs are usually swallowed:

╷
│ Error: Error pinging Docker server: Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?
│ 
│   with provider["registry.terraform.io/terraform-providers/docker"],
│   on cdk.tf.json line 19, in provider.docker[0]:
│   19:       {}
│ 
╵

They are swallowed because stdio is ignored here: https://github.com/hashicorp/terraform-cdk/blob/a5d0380585abee49c9ffbaa7fa6454aa186d07f8/packages/cdktf/lib/testing/matchers.ts#L267-L267

The original failure message does not help much when trying to figure out why this is failing:

matchers › toPlanSuccessfully › succeeds if the terraform config passed is valid

    expect(received).toBeTruthy()

    Received: false

      255 |       
    > 256 |       expect(res.pass).toBeTruthy();
          |                        ^
      257 |       expect(res.message()).toMatchInlineSnapshot(
      258 |         `"Expected subject not to plan successfully"`
      259 |       );

      at Object.<anonymous> (lib/testing/__tests__/matchers.test.ts:256:24)

Setting CDKTF_LOG_LEVEL also does not work, as the stdio from Terraform is ignored.

Tasks

• [ ] Use a different resource for the test case (e.g. local_file)

[jsteinich]

This is pretty annoying for my local development. I'm running a local VS Code dev container via Docker Desktop and WSL2 on Windows.

[DanielMSchmidt]

This is not only the case in the matcher tests, but also in the project conversion test in the hcl2cdk package

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