Support locals block inside tftest.hcl Terraform Test file.

[sheeeng]

Terraform Version

terraform version
Terraform v1.7.2
on darwin_arm64

Use Cases

We don't want to repeat the same template string inside tftest.hcl Terraform Test file.

Please support locals block inside tftest.hcl Terraform Test file.

Attempted Solutions

locals {
  variable_name = "${run.setup_tests.variable_value_one}_${run.setup_tests.variable_value_two}"
}

$ terraform init -backend=false && terraform test --verbose --verbose
Initializing modules...
╷
│ Error: Unsupported block type
│ 
│   on tests/main.tftest.hcl line 13:
│   13: locals {
│ 
│ Blocks of type "locals" are not expected here.

Proposal

No response

References

No response

[crw]

Thanks for this feature request! If you are viewing this issue and would like to indicate your interest, please use the 👍 reaction on the issue description to upvote this issue. We also welcome additional use case descriptions. Thanks again!

[JohnEricson]

I want this feature as well to be able to define asserts once and then use them in several run blocks in the same *.tftest.hcl file. It's not possible to use variables { .. } for this as I need to use variables in the variable values resulting in Variables may not be used here. errors.

What I want to do:

variables {
  # Not a module variable. Used for reusing asserts in all runs.
  assert_test = {
    a = {
      expected = "test_a_correct_value"
      error_message = "Not the expected value in Test A"
    },
    b = {
      expected = "test_b_correct_value"
      error_message = "Not the expected value in Test B"
    }
  }
}

run "run_1" {
  command = plan

  variables {
    mode = "1"
  }

  assert {
    condition     = output.a == var.assert_test.a.expected
    error_message = var.assert_test.a.error_message
  }
}

run "run_2" {
  command = plan

  variables {
    mode = "2"
  }

  assert {
    condition     = output.a == var.assert_test.a.expected
    error_message = var.assert_test.a.error_message
  }
}