Acceptance test always returns pass regardless of value

Terraform
1

I’m having trouble figuring out what’s going wrong here because no matter what I put in the test values it passes:

package redfish

import (
	"fmt"
	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/resource"
	"testing"
)

// redfish.Power represents a concrete Go type that represents an API resource
func TestAccRedfishPower_basic(t *testing.T) {

	resource.Test(t, resource.TestCase{
		Providers:    testAccProviders,
		Steps: []resource.TestStep{
			{
				Config: testAccRedfishResourcePowerConfig("root",
														  "password",
														    "root",
					                                		"password",
					                                		"192.168.1.63",
														 "PowerOn",
														  120,
												  				10),
				Check: resource.ComposeTestCheckFunc(
					resource.TestCheckResourceAttr("nonsense", "complete_nonsense", "supernonsense"),
				),
			},
		},
	})
}

func testAccRedfishResourcePowerConfig(providerUsername string,
									   providerPassword string,
									   serverUsername string,
									   serverPassword string,
									   serverEndpoint string,
									   desiredPowerAction string,
									   maximumWaitTime int,
									   checkInterval int) string {
	return fmt.Sprintf(`
		terraform {
		  required_providers {
			redfish = {
			  source = "grantcurell/redfish"
			}
		  }
		}
		
		// For servers without a uniquely defined username/password these values will be used
		provider "redfish" {
		  user = "%s"
		  password = "%s"
		}
		
		resource "redfish_power" "system_power" {
		
		  redfish_server {
			user = "%s"
			password = "%s"
			endpoint = "https://%s"
			ssl_insecure = true
		}
		
		desired_power_action = "%s"
		maximum_wait_time = %d
		check_interval = %d
		}
		
		output "current_power_state" {
		value = redfish_power.system_power
		}
		`,
		providerUsername, providerPassword, serverUsername,
		serverPassword, serverEndpoint, desiredPowerAction,
		maximumWaitTime, checkInterval,
	)
}

I only have this one test and when I run it I get:

go test
PASS
ok github.com/grantcurell/terraform-provider-redfish/redfish 0.136s

The provider test is:

package redfish

import "github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"

var testAccProviders map[string]*schema.Provider
var testAccProvider *schema.Provider

func init() {
	testAccProvider = Provider()
	testAccProviders = map[string]*schema.Provider{
		"redfish": testAccProvider,
	}
}

Is there something obvious I’m missing?