tests: fix acceptance regressions for token regenerate update

Amp-Thread-ID: https://ampcode.com/threads/T-019cb105-9ca1-77fd-86f5-da5b5605cb01
Co-authored-by: Amp <amp@ampcode.com>

Author: toppercodes

axiom/provider_test.go

@@ -375,7 +375,7 @@ func TestAccAxiomResources_capabilities(t *testing.T) {
 						}
 					}
 				`,
-				ExpectError: regexp.MustCompile(`at\sleast\sone\scapability\smust\sbe\sset`),
+				ExpectError: regexp.MustCompile(`(?i)at\s+least\s+one\s+dataset\s+capability\s+must\s+be\s+set`),
 			},
 			{
 				Config: `
@@ -747,6 +747,10 @@ func testAccCheckAxiomResourcesDestroyed(client *ax.Client) func(s *terraform.St
 			case "axiom_virtual_field":
 				_, err = client.VirtualFields.Get(context.Background(), resource.Primary.ID)
 			}
+			if err == nil {
+				return fmt.Errorf("resource %s still exists after destroy", id)
+			}
+
 			datasetErr, ok := err.(ax.HTTPError)
 			if !ok {
 				return fmt.Errorf("could not assert error for %s as ax.HTTPError: %T", id, err)

axiom/resource_tokens.go

@@ -14,8 +14,6 @@ import (
 	"github.com/hashicorp/terraform-plugin-framework/resource/schema"
 	"github.com/hashicorp/terraform-plugin-framework/resource/schema/listdefault"
 	"github.com/hashicorp/terraform-plugin-framework/resource/schema/mapdefault"
-	"github.com/hashicorp/terraform-plugin-framework/resource/schema/planmodifier"
-	"github.com/hashicorp/terraform-plugin-framework/resource/schema/stringplanmodifier"
 	"github.com/hashicorp/terraform-plugin-framework/schema/validator"
 	"github.com/hashicorp/terraform-plugin-framework/types"
 	"github.com/hashicorp/terraform-plugin-framework/types/basetypes"
@@ -130,16 +128,10 @@ func (r *TokenResource) Schema(_ context.Context, _ resource.SchemaRequest, resp
 				Computed:    true,
 				Sensitive:   true,
 				Description: "The token value to be used in API calls",
-				PlanModifiers: []planmodifier.String{
-					stringplanmodifier.UseStateForUnknown(),
-				},
 			},
 			"id": schema.StringAttribute{
 				Computed:            true,
 				MarkdownDescription: "The unique identifier of the token to be used when interacting with the token",
-				PlanModifiers: []planmodifier.String{
-					stringplanmodifier.UseStateForUnknown(),
-				},
 			},
 			"name": schema.StringAttribute{
 				Required:    true,