Terraform AWS Eventbridge Input transformer not applying - amazon-web-services

Question

When trying to use the eventbridge input_transformer i do not receive the transformed object, but instead i get the original object sent directly to SQS.
I currently have the following setup running
locals {
rule-arn = "arn:aws:events:${data.aws_arn.event-rule.region}:${data.aws_arn.event-rule.account}:rule/${aws_cloudwatch_event_rule.notification.name}"
}
resource "aws_sqs_queue" "test-queue" {
name = "test-queue"
}
resource "aws_cloudwatch_event_rule" "notification" {
name = "test-notification"
event_bus_name = aws_cloudwatch_event_bus.events.name
description = "Listens to all events in the TEST.Notification namespace"
event_pattern = jsonencode({
source = [{ "prefix" : "TEST.Notification" }],
})
}
resource "aws_cloudwatch_event_target" "developer-notification" {
rule = aws_cloudwatch_event_rule.notification.name
target_id = "SendToSQS"
arn = aws_sqs_queue.test-queue.arn
input_transformer {
input_paths = {
"detailType" = "$.detail-type",
}
input_template = jsonencode(
{
"detailType" : "<detailType>"
}
)
}
}
resource "aws_sqs_queue_policy" "test-queue" {
queue_url = aws_sqs_queue.test-queue.id
policy = <<POLICY
{
"Version": "2012-10-17",
"Id": "",
"Statement": [
{
"Sid": "Allow EventBridge to SQS",
"Effect": "Allow",
"Principal": {
"Service": "events.amazonaws.com"
},
"Action": "*",
"Resource": "${aws_sqs_queue.test-queue.arn}",
"Condition": {
"ArnEquals": {
"aws:SourceArn": "${aws_cloudwatch_event_rule.notification.arn}"
}
}
}
]
}
POLICY
}
I am running Terraform version:
Terraform v1.2.3
on darwin_arm64
I have seen some talk about having to do stuff like
"\"<detailType>\""
in order to have it work, but i've had no luck with that either, so for brevity/readability i've removed all the weird tricks i've seen people use. My thinking is there's something more basic i am missing here.
Does someone know what i am doing wrong?