Feature: enable Azure PostgreSQL Server testing

examples/azure/terraform-azure-postgresql-example/README.md

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+# Terraform Azure PostgreSQL DB Example
+
+This folder contains a Terraform module that deploys resources in [Azure](https://azure.microsoft.com/) to demonstrate how you can use Terratest to write automated tests for your Azure Terraform code.
+This module deploys a database for PostgreSQL.
+
+- A [Azure PostgreSQL Database](https://azure.microsoft.com/services/mysql/).
+
+Check out [test/azure/terraform_azure_postgresqldb_example_test.go](./../../../test/azure/terraform_azure_postgresqldb_example_test.go) to see how you can write automated tests for this module and validate the configuration of the parameters and options. 
+
+**WARNING**: This module and the automated tests for it deploy real resources into your Azure account which can cost you money. 
+
+## Running this module manually
+1. Sign up for [Azure](https://azure.microsoft.com/).
+1. Configure your Azure credentials using one of the [supported methods for Azure CLI
+   tools](https://docs.microsoft.com/en-us/cli/azure/azure-cli-configuration?view=azure-cli-latest)
+1. Install [Terraform](https://www.terraform.io/) and make sure it's on your `PATH`.
+1. Ensure [environment variables](../README.md#review-environment-variables) are available
+1. Run `terraform init`
+1. Run `terraform apply`
+1. When you're done, run `terraform destroy`.
+
+
+## Running automated tests against this module
+1. Sign up for [Azure](https://azure.microsoft.com/)
+1. Configure your Azure credentials using one of the [supported methods for Azure CLI
+   tools](https://docs.microsoft.com/en-us/cli/azure/azure-cli-configuration?view=azure-cli-latest)
+1. Install [Terraform](https://www.terraform.io/) and make sure it's on your `PATH`
+1. Configure your Terratest [Go test environment](../README.md) 
+1. `cd test/azure`
+1. `go build terraform_azure_mysqldb_example_test.go`
+1. `go test -v -timeout 60m -tags azure -run TestPostgreSQLDatabase`
+

examples/azure/terraform-azure-postgresql-example/main.tf

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+# ---------------------------------------------------------------------------------------------------------------------
+# DEPLOY AN PostgreSQL Database
+# This is an example of how to deploy an Azure PostgreSQL database.
+# See test/terraform_azure_example_test.go for how to write automated tests for this code.
+# ---------------------------------------------------------------------------------------------------------------------
+
+
+# ---------------------------------------------------------------------------------------------------------------------
+# CONFIGURE OUR AZURE CONNECTION
+# ---------------------------------------------------------------------------------------------------------------------
+provider "azurerm" {
+  features {}
+}
+
+# ---------------------------------------------------------------------------------------------------------------------
+# DEPLOY A RESOURCE GROUP
+# ---------------------------------------------------------------------------------------------------------------------
+resource "azurerm_resource_group" "rg" {
+  name     = "postgresql-rg"
+  location = "West Europe"
+}
+
+# ---------------------------------------------------------------------------------------------------------------------
+# DEPLOY AZURE PostgreSQL SERVER
+# ---------------------------------------------------------------------------------------------------------------------
+resource "azurerm_postgresql_server" "postgresqlserver" {
+  name                = "postgresqlserver-${var.postfix}"
+  location            = azurerm_resource_group.rg.location
+  resource_group_name = azurerm_resource_group.rg.name
+
+  sku_name = "B_Gen5_2"
+
+  storage_mb                   = 5120
+  backup_retention_days        = 7
+  geo_redundant_backup_enabled = false
+  auto_grow_enabled            = true
+
+  administrator_login          = "pgsqladmin"
+  administrator_login_password = "H@Sh1CoR3!"
+  version                      = "11"
+  ssl_enforcement_enabled      = true
+}
+
+# ---------------------------------------------------------------------------------------------------------------------
+# DEPLOY AZURE PostgreSQL Database
+# ---------------------------------------------------------------------------------------------------------------------
+resource "azurerm_postgresql_database" "postgresqldb" {
+  name                = "postgresqldb"
+  resource_group_name = azurerm_resource_group.rg.name
+  server_name         = azurerm_postgresql_server.postgresqlserver.name
+  charset             = "UTF8"
+  collation           = "English_United States.1252"
+}

examples/azure/terraform-azure-postgresql-example/output.tf

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+output "sku_name" {
+    value = azurerm_postgresql_server.postgresqlserver.sku_name
+}
+
+output "servername" {
+    value = azurerm_postgresql_server.postgresqlserver.name
+
+}
+
+output "rgname" {
+    value = azurerm_resource_group.rg.name
+}

examples/azure/terraform-azure-postgresql-example/variables.tf

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+variable "postfix" {
+  description = "A postfix string to centrally mitigate resource name collisions."
+  type        = string
+  default     = "resource"
+}

modules/azure/postgresql.go

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+package azure
+
+import (
+	"context"
+
+	"github.com/Azure/azure-sdk-for-go/services/postgresql/mgmt/2017-12-01/postgresql"
+	"github.com/gruntwork-io/terratest/modules/testing"
+	"github.com/stretchr/testify/require"
+)
+
+// GetPostgreSQLServerClientE is a helper function that will setup a postgresql server client.
+func GetPostgreSQLServerClientE(subscriptionID string) (*postgresql.ServersClient, error) {
+	// Validate Azure subscription ID
+	subscriptionID, err := getTargetAzureSubscription(subscriptionID)
+	if err != nil {
+		return nil, err
+	}
+
+	// Create a postgresql server client
+	postgresqlClient := postgresql.NewServersClient(subscriptionID)
+
+	// Create an authorizer
+	authorizer, err := NewAuthorizer()
+	if err != nil {
+		return nil, err
+	}
+
+	// Attach authorizer to the client
+	postgresqlClient.Authorizer = *authorizer
+
+	return &postgresqlClient, nil
+}
+
+// GetPostgresqlServer is a helper function that gets the server.
+// This function would fail the test if there is an error.
+func GetPostgresqlServer(t testing.TestingT, resGroupName string, serverName string, subscriptionID string) *postgresql.Server {
+	postgresqlServer, err := GetPostgresqlServerE(t, subscriptionID, resGroupName, serverName)
+	require.NoError(t, err)
+
+	return postgresqlServer
+}
+
+// GetPostgresqlServerE is a helper function that gets the server.
+func GetPostgresqlServerE(t testing.TestingT, subscriptionID string, resGroupName string, serverName string) (*postgresql.Server, error) {
+	// Create a postgresql Server client
+	postgresqlClient, err := GetPostgreSQLServerClientE(subscriptionID)
+	if err != nil {
+		return nil, err
+	}
+
+	// Get the corresponding server client
+	postgresqlServer, err := postgresqlClient.Get(context.Background(), resGroupName, serverName)
+	if err != nil {
+		return nil, err
+	}
+
+	//Return server
+	return &postgresqlServer, nil
+}
+
+// GetPostgresqlDBClientE is a helper function that will setup a postgresql DB client.
+func GetPostgresqlDBClientE(subscriptionID string) (*postgresql.DatabasesClient, error) {
+	// Validate Azure subscription ID
+	subscriptionID, err := getTargetAzureSubscription(subscriptionID)
+	if err != nil {
+		return nil, err
+	}
+
+	// Create a postgresql db client
+	postgresqlDBClient := postgresql.NewDatabasesClient(subscriptionID)
+
+	// Create an authorizer
+	authorizer, err := NewAuthorizer()
+	if err != nil {
+		return nil, err
+	}
+
+	// Attach authorizer to the client
+	postgresqlDBClient.Authorizer = *authorizer
+
+	return &postgresqlDBClient, nil
+}
+
+//GetPostgresqlDB is a helper function that gets the database.
+// This function would fail the test if there is an error.
+func GetPostgresqlDB(t testing.TestingT, resGroupName string, serverName string, dbName string, subscriptionID string) *postgresql.Database {
+	database, err := GetPostgresqlDBE(t, subscriptionID, resGroupName, serverName, dbName)
+	require.NoError(t, err)
+
+	return database
+}
+
+//GetPostgresqlDBE is a helper function that gets the database.
+func GetPostgresqlDBE(t testing.TestingT, subscriptionID string, resGroupName string, serverName string, dbName string) (*postgresql.Database, error) {
+	// Create a postgresql db client
+	postgresqldbClient, err := GetPostgresqlDBClientE(subscriptionID)
+	if err != nil {
+		return nil, err
+	}
+
+	// Get the corresponding db client
+	postgresqlDb, err := postgresqldbClient.Get(context.Background(), resGroupName, serverName, dbName)
+	if err != nil {
+		return nil, err
+	}
+
+	//Return DB
+	return &postgresqlDb, nil
+}
+
+//ListPostgresqlDB is a helper function that gets all databases per server.
+func ListPostgresqlDB(t testing.TestingT, subscriptionID string, resGroupName string, serverName string) []postgresql.Database {
+	dblist, err := ListPostgresqlDBE(t, subscriptionID, resGroupName, serverName)
+	require.NoError(t, err)
+
+	return dblist
+}
+
+//ListPostgresqlDBE is a helper function that gets all databases per server.
+func ListPostgresqlDBE(t testing.TestingT, subscriptionID string, resGroupName string, serverName string) ([]postgresql.Database, error) {
+	// Create a postgresql db client
+	postgresqldbClient, err := GetPostgresqlDBClientE(subscriptionID)
+	if err != nil {
+		return nil, err
+	}
+
+	// Get the corresponding db client
+	postgresqlDbs, err := postgresqldbClient.ListByServer(context.Background(), resGroupName, serverName)
+	if err != nil {
+		return nil, err
+	}
+
+	//Return DB lists
+	return *postgresqlDbs.Value, nil
+}

modules/azure/postgresql_test.go

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+// +build azure
+
+// NOTE: We use build tags to differentiate azure testing because we currently do not have azure access setup for
+// CircleCI.
+
+package azure
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+/*
+The below tests are currently stubbed out, with the expectation that they will throw errors.
+If/when CRUD methods are introduced for Azure PostgreSQL server and database, these tests can be extended
+*/
+
+func TestGetPostgreSQLServerE(t *testing.T) {
+	t.Parallel()
+
+	resGroupName := ""
+	serverName := ""
+	subscriptionID := ""
+
+	_, err := GetPostgresqlServerE(t, subscriptionID, resGroupName, serverName)
+	require.Error(t, err)
+}
+
+func TestGetPostgreSQLDBE(t *testing.T) {
+	t.Parallel()
+
+	resGroupName := ""
+	serverName := ""
+	subscriptionID := ""
+	dbName := ""
+
+	_, err := GetPostgresqlDBE(t, subscriptionID, resGroupName, serverName, dbName)
+	require.Error(t, err)
+}

test/azure/terraform_azure_postgresql_example_test.go

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+package test
+
+import (
+	"os"
+	"strings"
+	"testing"
+
+	"github.com/gruntwork-io/terratest/modules/azure"
+	"github.com/gruntwork-io/terratest/modules/random"
+	"github.com/gruntwork-io/terratest/modules/terraform"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestPostgreSQLDatabase(t *testing.T) {
+	t.Parallel()
+
+	uniquePostfix := strings.ToLower(random.UniqueId())
+
+	// website::tag::1:: Configure Terraform setting up a path to Terraform code.
+	terraformOptions := terraform.WithDefaultRetryableErrors(t, &terraform.Options{
+		TerraformDir: "../../examples/azure/terraform-azure-postgresql-example",
+		Vars: map[string]interface{}{
+			"postfix": uniquePostfix,
+		},
+		NoColor: true,
+	})
+	// website::tag::4:: At the end of the test, run `terraform destroy` to clean up any resources that were created
+	defer terraform.Destroy(t, terraformOptions)
+
+	// website::tag::2:: Run `terraform init` and `terraform apply`. Fail the test if there are any errors.
+	terraform.InitAndApply(t, terraformOptions)
+
+	subscriptionID := os.Getenv("ARM_SUBSCRIPTION_ID")
+
+	// website::tag::3:: Run `terraform output` to get the values of output variables
+	expectedServername := "postgresqlserver-" + uniquePostfix // see fixture
+	actualServername := terraform.Output(t, terraformOptions, "servername")
+	rgName := terraform.Output(t, terraformOptions, "rgname")
+	expectedSkuName := terraform.Output(t, terraformOptions, "sku_name")
+
+	// website::tag::4:: Get the Server details and assert them against the terraform output
+	actualServer := azure.GetPostgresqlServer(t, rgName, actualServername, subscriptionID)
+	// Verify
+	assert.Equal(t, expectedServername, actualServername)
+	assert.Equal(t, expectedSkuName, *actualServer.Sku.Name)
+
+}