Fix instance profile integration tests

test/pkg/environment/aws/expectations.go

@@ -27,12 +27,15 @@ import (
 	"github.com/aws/aws-sdk-go/service/iam"
 	"github.com/aws/aws-sdk-go/service/ssm"
 	"github.com/aws/aws-sdk-go/service/sts"
+	"github.com/mitchellh/hashstructure/v2"
 	. "github.com/onsi/ginkgo/v2" //nolint:revive,stylecheck
 	. "github.com/onsi/gomega"    //nolint:revive,stylecheck
 	"github.com/samber/lo"
 	"go.uber.org/multierr"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/types"
+
+	"github.com/aws/karpenter/pkg/apis/v1beta1"
 )
 
 // Spot Interruption experiment details partially copied from
@@ -121,6 +124,12 @@ func (env *Environment) ExpectInstanceProfileExists(profileName string) iam.Inst
 	return lo.FromPtr(out.InstanceProfile)
 }
 
+// GetInstanceProfileName gets the string for the profile name based on the cluster name, region and the NodeClass name.
+// The length of this string can never exceed the maximum instance profile name limit of 128 characters.
+func (env *Environment) GetInstanceProfileName(nodeClass *v1beta1.EC2NodeClass) string {
+	return fmt.Sprintf("%s_%d", env.ClusterName, lo.Must(hashstructure.Hash(fmt.Sprintf("%s%s", env.Region, nodeClass.Name), hashstructure.FormatV2, nil)))
+}
+
 func (env *Environment) GetInstance(nodeName string) ec2.Instance {
 	node := env.Environment.GetNode(nodeName)
 	return env.GetInstanceByID(env.ExpectParsedProviderID(node.Spec.ProviderID))

test/suites/beta/integration/instance_profile_test.go

@@ -35,7 +35,7 @@ var _ = Describe("InstanceProfile Generation", func() {
 
 		instance := env.GetInstance(node.Name)
 		Expect(instance.IamInstanceProfile).ToNot(BeNil())
-		Expect(instance.IamInstanceProfile.Arn).To(ContainSubstring(nodeClass.Spec.Role))
+		Expect(lo.FromPtr(instance.IamInstanceProfile.Arn)).To(ContainSubstring(nodeClass.Status.InstanceProfile))
 
 		instanceProfile := env.ExpectInstanceProfileExists(instanceprofile.GetProfileName(env.Context, env.Region, nodeClass))
 		Expect(instanceProfile.Roles).To(HaveLen(1))
@@ -50,7 +50,7 @@ var _ = Describe("InstanceProfile Generation", func() {
 		env.ExpectDeleted(nodePool, nodeClass)
 		Eventually(func(g Gomega) {
 			_, err := env.IAMAPI.GetInstanceProfileWithContext(env.Context, &iam.GetInstanceProfileInput{
-				InstanceProfileName: aws.String(instanceprofile.GetProfileName(env.Context, env.Region, nodeClass)),
+				InstanceProfileName: aws.String(env.GetInstanceProfileName(nodeClass)),
 			})
 			g.Expect(awserrors.IsNotFound(err)).To(BeTrue())
 		}).Should(Succeed())