Adding test to demonstrate that the TestStep number is being used dyn…

…amically to determine the directory containing the Terraform configuration (#150)

helper/resource/testdata/TestTest_ConfigDirectory_TestStepDirectory_StepNotHardcoded/1/random.tf

@@ -0,0 +1,19 @@
+# Copyright (c) HashiCorp, Inc.
+# SPDX-License-Identifier: MPL-2.0
+
+terraform {
+  required_providers {
+    random = {
+      source = "registry.terraform.io/hashicorp/random"
+      version = "3.5.1"
+    }
+  }
+}
+
+provider "random" {}
+
+resource "random_password" "test" {
+  length = 8
+
+  numeric = false
+}

helper/resource/testdata/TestTest_ConfigDirectory_TestStepDirectory_StepNotHardcoded/2/random.tf

@@ -0,0 +1,19 @@
+# Copyright (c) HashiCorp, Inc.
+# SPDX-License-Identifier: MPL-2.0
+
+terraform {
+  required_providers {
+    random = {
+      source = "registry.terraform.io/hashicorp/random"
+      version = "3.5.1"
+    }
+  }
+}
+
+provider "random" {}
+
+resource "random_password" "test" {
+  length = 9
+
+  numeric = false
+}

helper/resource/teststep_providers_test.go

@@ -24,6 +24,7 @@ import (
 
 	"github.com/hashicorp/terraform-plugin-testing/config"
 	"github.com/hashicorp/terraform-plugin-testing/internal/plugintest"
+	"github.com/hashicorp/terraform-plugin-testing/internal/teststep"
 	"github.com/hashicorp/terraform-plugin-testing/terraform"
 )
 
@@ -2333,6 +2334,25 @@ func TestTest_ConfigDirectory_TestStepDirectory(t *testing.T) {
 	})
 }
 
+// TestTest_ConfigDirectory_TestStepDirectory_StepNotHardcoded uses a multistep test
+// to prove that the test step number is not hardcoded
+func TestTest_ConfigDirectory_TestStepDirectory_StepNotHardcoded(t *testing.T) {
+	t.Parallel()
+
+	Test(t, TestCase{
+		Steps: []TestStep{
+			{
+				ConfigDirectory: config.TestStepDirectory(),
+				Check:           TestCheckResourceAttrPtr("random_password.test", "length", teststep.Pointer("8")),
+			},
+			{
+				ConfigDirectory: config.TestStepDirectory(),
+				Check:           TestCheckResourceAttrPtr("random_password.test", "length", teststep.Pointer("9")),
+			},
+		},
+	})
+}
+
 func TestTest_ConfigDirectory_TestStepDirectory_Vars(t *testing.T) {
 	t.Parallel()