Add a test expecting fail when plannable import is not supported

Author: bbasata

helper/resource/importstate/examplecloud_test.go

@@ -1,3 +1,6 @@
+// Copyright (c) HashiCorp, Inc.
+// SPDX-License-Identifier: MPL-2.0
+
 package importstate_test
 
 import (

helper/resource/importstate/import_block_with_id_test.go

@@ -91,6 +91,42 @@ func TestTest_TestStep_ImportBlockId_ExpectError(t *testing.T) {
 	})
 }
 
+func TestTest_TestStep_ImportBlockId_FailWhenPlannableImportIsNotSupported(t *testing.T) {
+	t.Setenv("TF_ACC_TERRAFORM_PATH", "")
+	t.Setenv("TF_ACC_TERRAFORM_VERSION", "1.4.7") // Plannable import is supported in Terraform 1.5.0 and later
+
+	r.UnitTest(t, r.TestCase{
+		ProtoV6ProviderFactories: map[string]func() (tfprotov6.ProviderServer, error){
+			"examplecloud": providerserver.NewProviderServer(testprovider.Provider{
+				Resources: map[string]testprovider.Resource{
+					"examplecloud_container": examplecloudResource(),
+				},
+			}),
+		},
+		Steps: []r.TestStep{
+			{
+				Config: `
+				resource "examplecloud_container" "test" {
+					location = "westeurope"
+					name     = "somevalue"
+				}`,
+			},
+			{
+				Config: `
+				resource "examplecloud_container" "test" {
+					location = "eastus"
+					name     = "somevalue"
+				}`,
+				ResourceName:      "examplecloud_container.test",
+				ImportState:       true,
+				ImportStateKind:   r.ImportBlockWithId,
+				ImportStateVerify: true,
+				ExpectError:       regexp.MustCompile(`Terraform 1.5.0`),
+			},
+		},
+	})
+}
+
 func TestTest_TestStep_ImportBlockId_SkipDataSourceState(t *testing.T) {
 	t.Parallel()
 

helper/resource/testing_new_import_state.go

@@ -6,10 +6,12 @@ package resource
 import (
 	"context"
 	"fmt"
-	tfjson "github.com/hashicorp/terraform-json"
 	"reflect"
 	"strings"
 
+	"github.com/hashicorp/go-version"
+	tfjson "github.com/hashicorp/terraform-json"
+
 	"github.com/google/go-cmp/cmp"
 	"github.com/mitchellh/go-testing-interface"
 
@@ -21,6 +23,21 @@ import (
 	"github.com/hashicorp/terraform-plugin-testing/terraform"
 )
 
+func requirePlannableImport(t testing.T, versionUnderTest version.Version) error {
+	t.Helper()
+
+	minVersion, err := version.NewVersion("1.5.0")
+	if err != nil {
+		panic("failed to parse version string")
+	}
+
+	if versionUnderTest.LessThan(minVersion) {
+		return fmt.Errorf("ImportState steps require Terraform 1.5.0 or later")
+	}
+
+	return nil
+}
+
 func testStepNewImportState(ctx context.Context, t testing.T, helper *plugintest.Helper, wd *plugintest.WorkingDir, step TestStep, cfgRaw string, providers *providerFactories, stepNumber int) error {
 	t.Helper()
 
@@ -32,6 +49,13 @@ func testStepNewImportState(ctx context.Context, t testing.T, helper *plugintest
 		}
 	}
 
+	{
+		err := requirePlannableImport(t, *helper.TerraformVersion())
+		if err != nil {
+			return err
+		}
+	}
+
 	configRequest := teststep.PrepareConfigurationRequest{
 		Directory: step.ConfigDirectory,
 		File:      step.ConfigFile,