How to check if Param1 value is same as Param2 value?

[vrbcntrl]

** Question : ** Hi,

I have the below use case where I need to check peer_vpc_id value is same as vpc_id value

resource "aws_vpc_peering_connection" "foo" {
  peer_owner_id = var.peer_owner_id
  peer_vpc_id   = aws_vpc.bar.id
  vpc_id        = aws_vpc.foo.id
  auto_accept   = true

  tags = {
    Name = "VPC Peering between foo and bar"
  }
}

resource "aws_vpc" "foo" {
  cidr_block = "10.1.0.0/16"
}

resource "aws_vpc" "bar" {
  cidr_block = "10.2.0.0/16"
}

In the above example, peer_vpc_id = aws_vpc.bar.id and vpc_id = aws_vpc.foo.id so my Scenario should FAIL However, if their values were to be same, Ex: peer_vpc_id = aws_vpc.foo.id and vpc_id = aws_vpc.foo.id then my Scenario should PASS

wondering if there is a way to implement this in TC. I'd appreciate any help on this.

Thanks!

[Kudbettin]

Hi @vrbcntrl,

Thanks for the issue. This is something that had me surprised before for not existing in Terraform-Compliance yet.

The closest I could get to the requirement is:

Scenario: using in step variables
	Given I have aws_vpc_peering_connection defined
	Then it must have peer_vpc_id
	And it must be in {aws_vpc_peering_connection.values.vpc_id}
	And it must cover {aws_vpc_peering_connection.values.vpc_id}

However, this scenario checks whether the set of all peer_vpc_ids over all aws_vpc_peering_connections is equal to the set of all vpc_ids over all aws_vpc_peering_connections

Then it must be in haystack

I do think we should be able to compare two things from the plan. However, it's a bit counter-intuitive to the filter and drill flow of TC.

I'm going to add this issue to our backlog and ping it if we decide on adding the functionality.

[vrbcntrl]

Thank you @Kudbettin for looking into the issue. Please let me know when you have a possible solution for the above requirement.

Have a great day!

[sleightsec]

agree this would be nice functionality. Especially if we can compare to value that was never in haystack or that was filtered out by earlier when clauses