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Intro

terraform-provider-azurerm-example-gen is a tool used to output the Terraform configuration example based on the acceptance tests. As the name implies, this tool only serves for the github.com/hashicorp/terraform-provider-azurerm project.

Install

$ go install github.com/magodo/terraform-provider-azurerm-example-gen

Note that this tool depends on go command. So make sure you have go installed in your runtime environment.

Usage

$ terraform-provider-azurerm-example-gen -dir=rootdir -from=testname servicepkg...

Note that the invocation convention of this tool is similar to go test, where the -from supports suing regexp to specify the acctest names and the servicepkg... can be one or more packages (i.e. package-list mode), either in the directory form or import path form.

Example

$ terraform-provider-azurerm-example-gen -dir=$HOME/github/terraform-provider-azurerm -from='TestAccSubnet_basic$' ./internal/services/network
# or
$ terraform-provider-azurerm-example-gen -dir=$HOME/github/terraform-provider-azurerm -from='TestAccSubnet_basic$' github.com/hashicorp/terraform-provider-azurerm/internal/services/network

Output:

# Generated from AccTest TestAccSubnet_basic

provider "azurerm" {
  features {}
}
resource "azurerm_resource_group" "test" {
  name     = "acctestRG-211102165905940679"
  location = "West Europe"
}
resource "azurerm_virtual_network" "test" {
  name                = "acctestvirtnet211102165905940679"
  address_space       = ["10.0.0.0/16"]
  location            = azurerm_resource_group.test.location
  resource_group_name = azurerm_resource_group.test.name
}
resource "azurerm_subnet" "test" {
  name                 = "internal"
  resource_group_name  = azurerm_resource_group.test.name
  virtual_network_name = azurerm_virtual_network.test.name
  address_prefix       = "10.0.2.0/24"
}
resource "azurerm_subnet" "test2" {
  name                 = "internal2"
  resource_group_name  = azurerm_resource_group.test.name
  virtual_network_name = azurerm_virtual_network.test.name
  address_prefix       = "10.0.3.0/24"
}

How it Works

Given the fixed code structure of the acctest in the provider codebase, the tool fetches out the setup part of a specified testcase (i.e. the construction of the testdata and the resource type), then add a following fmt.println statement to print the first test step's configuration to the stdout. With wrapping this as a new test case, the tool will then invoke go test -v internally and capture the stdout content, which is the terraform configuration that the acctest runs.