Admission control exposes subresource

This commit is contained in:
derekwaynecarr
2015-06-18 15:00:46 -04:00
parent 1ba909098e
commit fce7adf3e7
12 changed files with 85 additions and 67 deletions

View File

@@ -24,7 +24,7 @@ import (
func TestAdmission(t *testing.T) {
handler := NewAlwaysDeny()
err := handler.Admit(admission.NewAttributesRecord(nil, "Pod", "foo", "Pod", "ignored", nil))
err := handler.Admit(admission.NewAttributesRecord(nil, "kind", "namespace", "resource", "subresource", admission.Create, nil))
if err == nil {
t.Errorf("Expected error returned from admission handler")
}

View File

@@ -49,7 +49,7 @@ func testAdmission(t *testing.T, pod *api.Pod, shouldAccept bool) {
client: mockClient,
}
req := &rest.ConnectRequest{Name: pod.Name, ResourcePath: "pods/exec"}
err := handler.Admit(admission.NewAttributesRecord(req, "Pod", "test", "pods", admission.Connect, nil))
err := handler.Admit(admission.NewAttributesRecord(req, "Pod", "test", "pods", "exec", admission.Connect, nil))
if shouldAccept && err != nil {
t.Errorf("Unexpected error returned from admission handler: %v", err)
}

View File

@@ -41,7 +41,7 @@ func TestAdmission(t *testing.T) {
Containers: []api.Container{{Name: "ctr", Image: "image"}},
},
}
err := handler.Admit(admission.NewAttributesRecord(&pod, "Pod", namespace, "pods", admission.Create, nil))
err := handler.Admit(admission.NewAttributesRecord(&pod, "Pod", namespace, "pods", "", admission.Create, nil))
if err != nil {
t.Errorf("Unexpected error returned from admission handler")
}
@@ -72,7 +72,7 @@ func TestAdmissionNamespaceExists(t *testing.T) {
Containers: []api.Container{{Name: "ctr", Image: "image"}},
},
}
err := handler.Admit(admission.NewAttributesRecord(&pod, "Pod", namespace, "pods", admission.Create, nil))
err := handler.Admit(admission.NewAttributesRecord(&pod, "Pod", namespace, "pods", "", admission.Create, nil))
if err != nil {
t.Errorf("Unexpected error returned from admission handler")
}
@@ -93,7 +93,7 @@ func TestIgnoreAdmission(t *testing.T) {
Containers: []api.Container{{Name: "ctr", Image: "image"}},
},
}
err := handler.Admit(admission.NewAttributesRecord(&pod, "Pod", namespace, "pods", admission.Update, nil))
err := handler.Admit(admission.NewAttributesRecord(&pod, "Pod", namespace, "pods", "", admission.Update, nil))
if err != nil {
t.Errorf("Unexpected error returned from admission handler")
}
@@ -120,7 +120,7 @@ func TestAdmissionNamespaceExistsUnknownToHandler(t *testing.T) {
Containers: []api.Container{{Name: "ctr", Image: "image"}},
},
}
err := handler.Admit(admission.NewAttributesRecord(&pod, "Pod", namespace, "pods", admission.Create, nil))
err := handler.Admit(admission.NewAttributesRecord(&pod, "Pod", namespace, "pods", "", admission.Create, nil))
if err != nil {
t.Errorf("Unexpected error returned from admission handler")
}

View File

@@ -49,7 +49,7 @@ func TestAdmission(t *testing.T) {
Containers: []api.Container{{Name: "ctr", Image: "image"}},
},
}
err := handler.Admit(admission.NewAttributesRecord(&pod, "Pod", namespaceObj.Namespace, "pods", admission.Create, nil))
err := handler.Admit(admission.NewAttributesRecord(&pod, "Pod", namespaceObj.Namespace, "pods", "", admission.Create, nil))
if err != nil {
t.Errorf("Unexpected error returned from admission handler: %v", err)
}
@@ -59,19 +59,19 @@ func TestAdmission(t *testing.T) {
store.Add(namespaceObj)
// verify create operations in the namespace cause an error
err = handler.Admit(admission.NewAttributesRecord(&pod, "Pod", namespaceObj.Namespace, "pods", admission.Create, nil))
err = handler.Admit(admission.NewAttributesRecord(&pod, "Pod", namespaceObj.Namespace, "pods", "", admission.Create, nil))
if err == nil {
t.Errorf("Expected error rejecting creates in a namespace when it is terminating")
}
// verify update operations in the namespace can proceed
err = handler.Admit(admission.NewAttributesRecord(&pod, "Pod", namespaceObj.Namespace, "pods", admission.Update, nil))
err = handler.Admit(admission.NewAttributesRecord(&pod, "Pod", namespaceObj.Namespace, "pods", "", admission.Update, nil))
if err != nil {
t.Errorf("Unexpected error returned from admission handler: %v", err)
}
// verify delete operations in the namespace can proceed
err = handler.Admit(admission.NewAttributesRecord(nil, "Pod", namespaceObj.Namespace, "pods", admission.Delete, nil))
err = handler.Admit(admission.NewAttributesRecord(nil, "Pod", namespaceObj.Namespace, "pods", "", admission.Delete, nil))
if err != nil {
t.Errorf("Unexpected error returned from admission handler: %v", err)
}

View File

@@ -41,7 +41,7 @@ func getResourceRequirements(cpu, memory string) api.ResourceRequirements {
func TestAdmissionIgnoresDelete(t *testing.T) {
namespace := "default"
handler := createResourceQuota(&testclient.Fake{}, nil)
err := handler.Admit(admission.NewAttributesRecord(nil, "Pod", namespace, "pods", admission.Delete, nil))
err := handler.Admit(admission.NewAttributesRecord(nil, "Pod", namespace, "pods", "", admission.Delete, nil))
if err != nil {
t.Errorf("ResourceQuota should admit all deletes: %v", err)
}
@@ -67,7 +67,7 @@ func TestIncrementUsagePods(t *testing.T) {
r := api.ResourcePods
status.Hard[r] = resource.MustParse("2")
status.Used[r] = resource.MustParse("1")
dirty, err := IncrementUsage(admission.NewAttributesRecord(&api.Pod{}, "Pod", namespace, "pods", admission.Create, nil), status, client)
dirty, err := IncrementUsage(admission.NewAttributesRecord(&api.Pod{}, "Pod", namespace, "pods", "", admission.Create, nil), status, client)
if err != nil {
t.Errorf("Unexpected error: %v", err)
}
@@ -107,7 +107,7 @@ func TestIncrementUsageMemory(t *testing.T) {
Volumes: []api.Volume{{Name: "vol"}},
Containers: []api.Container{{Name: "ctr", Image: "image", Resources: getResourceRequirements("100m", "1Gi")}},
}}
dirty, err := IncrementUsage(admission.NewAttributesRecord(newPod, "Pod", namespace, "pods", admission.Create, nil), status, client)
dirty, err := IncrementUsage(admission.NewAttributesRecord(newPod, "Pod", namespace, "pods", "", admission.Create, nil), status, client)
if err != nil {
t.Errorf("Unexpected error: %v", err)
}
@@ -148,7 +148,7 @@ func TestExceedUsageMemory(t *testing.T) {
Volumes: []api.Volume{{Name: "vol"}},
Containers: []api.Container{{Name: "ctr", Image: "image", Resources: getResourceRequirements("100m", "3Gi")}},
}}
_, err := IncrementUsage(admission.NewAttributesRecord(newPod, "Pod", namespace, "pods", admission.Create, nil), status, client)
_, err := IncrementUsage(admission.NewAttributesRecord(newPod, "Pod", namespace, "pods", "", admission.Create, nil), status, client)
if err == nil {
t.Errorf("Expected memory usage exceeded error")
}
@@ -181,7 +181,7 @@ func TestIncrementUsageCPU(t *testing.T) {
Volumes: []api.Volume{{Name: "vol"}},
Containers: []api.Container{{Name: "ctr", Image: "image", Resources: getResourceRequirements("100m", "1Gi")}},
}}
dirty, err := IncrementUsage(admission.NewAttributesRecord(newPod, "Pod", namespace, "pods", admission.Create, nil), status, client)
dirty, err := IncrementUsage(admission.NewAttributesRecord(newPod, "Pod", namespace, "pods", "", admission.Create, nil), status, client)
if err != nil {
t.Errorf("Unexpected error: %v", err)
}
@@ -222,7 +222,7 @@ func TestUnboundedCPU(t *testing.T) {
Volumes: []api.Volume{{Name: "vol"}},
Containers: []api.Container{{Name: "ctr", Image: "image", Resources: getResourceRequirements("0m", "1Gi")}},
}}
_, err := IncrementUsage(admission.NewAttributesRecord(newPod, "Pod", namespace, "pods", admission.Create, nil), status, client)
_, err := IncrementUsage(admission.NewAttributesRecord(newPod, "Pod", namespace, "pods", "", admission.Create, nil), status, client)
if err == nil {
t.Errorf("Expected CPU unbounded usage error")
}
@@ -255,7 +255,7 @@ func TestUnboundedMemory(t *testing.T) {
Volumes: []api.Volume{{Name: "vol"}},
Containers: []api.Container{{Name: "ctr", Image: "image", Resources: getResourceRequirements("250m", "0")}},
}}
_, err := IncrementUsage(admission.NewAttributesRecord(newPod, "Pod", namespace, "pods", admission.Create, nil), status, client)
_, err := IncrementUsage(admission.NewAttributesRecord(newPod, "Pod", namespace, "pods", "", admission.Create, nil), status, client)
if err == nil {
t.Errorf("Expected memory unbounded usage error")
}
@@ -288,7 +288,7 @@ func TestExceedUsageCPU(t *testing.T) {
Volumes: []api.Volume{{Name: "vol"}},
Containers: []api.Container{{Name: "ctr", Image: "image", Resources: getResourceRequirements("500m", "1Gi")}},
}}
_, err := IncrementUsage(admission.NewAttributesRecord(newPod, "Pod", namespace, "pods", admission.Create, nil), status, client)
_, err := IncrementUsage(admission.NewAttributesRecord(newPod, "Pod", namespace, "pods", "", admission.Create, nil), status, client)
if err == nil {
t.Errorf("Expected CPU usage exceeded error")
}
@@ -314,7 +314,7 @@ func TestExceedUsagePods(t *testing.T) {
r := api.ResourcePods
status.Hard[r] = resource.MustParse("1")
status.Used[r] = resource.MustParse("1")
_, err := IncrementUsage(admission.NewAttributesRecord(&api.Pod{}, "Pod", namespace, "pods", admission.Create, nil), status, client)
_, err := IncrementUsage(admission.NewAttributesRecord(&api.Pod{}, "Pod", namespace, "pods", "", admission.Create, nil), status, client)
if err == nil {
t.Errorf("Expected error because this would exceed your quota")
}
@@ -336,7 +336,7 @@ func TestIncrementUsageServices(t *testing.T) {
r := api.ResourceServices
status.Hard[r] = resource.MustParse("2")
status.Used[r] = resource.MustParse("1")
dirty, err := IncrementUsage(admission.NewAttributesRecord(&api.Service{}, "Service", namespace, "services", admission.Create, nil), status, client)
dirty, err := IncrementUsage(admission.NewAttributesRecord(&api.Service{}, "Service", namespace, "services", "", admission.Create, nil), status, client)
if err != nil {
t.Errorf("Unexpected error: %v", err)
}
@@ -365,7 +365,7 @@ func TestExceedUsageServices(t *testing.T) {
r := api.ResourceServices
status.Hard[r] = resource.MustParse("1")
status.Used[r] = resource.MustParse("1")
_, err := IncrementUsage(admission.NewAttributesRecord(&api.Service{}, "Service", namespace, "services", admission.Create, nil), status, client)
_, err := IncrementUsage(admission.NewAttributesRecord(&api.Service{}, "Service", namespace, "services", "", admission.Create, nil), status, client)
if err == nil {
t.Errorf("Expected error because this would exceed usage")
}
@@ -387,7 +387,7 @@ func TestIncrementUsageReplicationControllers(t *testing.T) {
r := api.ResourceReplicationControllers
status.Hard[r] = resource.MustParse("2")
status.Used[r] = resource.MustParse("1")
dirty, err := IncrementUsage(admission.NewAttributesRecord(&api.ReplicationController{}, "ReplicationController", namespace, "replicationControllers", admission.Create, nil), status, client)
dirty, err := IncrementUsage(admission.NewAttributesRecord(&api.ReplicationController{}, "ReplicationController", namespace, "replicationControllers", "", admission.Create, nil), status, client)
if err != nil {
t.Errorf("Unexpected error: %v", err)
}
@@ -416,7 +416,7 @@ func TestExceedUsageReplicationControllers(t *testing.T) {
r := api.ResourceReplicationControllers
status.Hard[r] = resource.MustParse("1")
status.Used[r] = resource.MustParse("1")
_, err := IncrementUsage(admission.NewAttributesRecord(&api.ReplicationController{}, "ReplicationController", namespace, "replicationControllers", admission.Create, nil), status, client)
_, err := IncrementUsage(admission.NewAttributesRecord(&api.ReplicationController{}, "ReplicationController", namespace, "replicationControllers", "", admission.Create, nil), status, client)
if err == nil {
t.Errorf("Expected error for exceeding hard limits")
}
@@ -438,7 +438,7 @@ func TestExceedUsageSecrets(t *testing.T) {
r := api.ResourceSecrets
status.Hard[r] = resource.MustParse("1")
status.Used[r] = resource.MustParse("1")
_, err := IncrementUsage(admission.NewAttributesRecord(&api.Secret{}, "Secret", namespace, "secrets", admission.Create, nil), status, client)
_, err := IncrementUsage(admission.NewAttributesRecord(&api.Secret{}, "Secret", namespace, "secrets", "", admission.Create, nil), status, client)
if err == nil {
t.Errorf("Expected error for exceeding hard limits")
}
@@ -460,7 +460,7 @@ func TestExceedUsagePersistentVolumeClaims(t *testing.T) {
r := api.ResourcePersistentVolumeClaims
status.Hard[r] = resource.MustParse("1")
status.Used[r] = resource.MustParse("1")
_, err := IncrementUsage(admission.NewAttributesRecord(&api.PersistentVolumeClaim{}, "PersistentVolumeClaim", namespace, "persistentVolumeClaims", admission.Create, nil), status, client)
_, err := IncrementUsage(admission.NewAttributesRecord(&api.PersistentVolumeClaim{}, "PersistentVolumeClaim", namespace, "persistentVolumeClaims", "", admission.Create, nil), status, client)
if err == nil {
t.Errorf("Expected error for exceeding hard limits")
}

View File

@@ -44,7 +44,7 @@ func TestAdmission(t *testing.T) {
}
for k, v := range successCases {
pod.Spec.Containers[0].SecurityContext = v
err := handler.Admit(admission.NewAttributesRecord(&pod, "Pod", "foo", string(api.ResourcePods), "ignored", nil))
err := handler.Admit(admission.NewAttributesRecord(&pod, "Pod", "foo", string(api.ResourcePods), "", "ignored", nil))
if err != nil {
t.Errorf("Unexpected error returned from admission handler for case %s", k)
}
@@ -57,7 +57,7 @@ func TestAdmission(t *testing.T) {
}
for k, v := range errorCases {
pod.Spec.Containers[0].SecurityContext = v
err := handler.Admit(admission.NewAttributesRecord(&pod, "Pod", "foo", string(api.ResourcePods), "ignored", nil))
err := handler.Admit(admission.NewAttributesRecord(&pod, "Pod", "foo", string(api.ResourcePods), "", "ignored", nil))
if err == nil {
t.Errorf("Expected error returned from admission handler for case %s", k)
}

View File

@@ -30,7 +30,7 @@ import (
func TestIgnoresNonCreate(t *testing.T) {
pod := &api.Pod{}
for _, op := range []admission.Operation{admission.Update, admission.Delete, admission.Connect} {
attrs := admission.NewAttributesRecord(pod, "Pod", "myns", string(api.ResourcePods), op, nil)
attrs := admission.NewAttributesRecord(pod, "Pod", "myns", string(api.ResourcePods), "", op, nil)
handler := admission.NewChainHandler(NewServiceAccount(nil))
err := handler.Admit(attrs)
if err != nil {
@@ -41,7 +41,7 @@ func TestIgnoresNonCreate(t *testing.T) {
func TestIgnoresNonPodResource(t *testing.T) {
pod := &api.Pod{}
attrs := admission.NewAttributesRecord(pod, "Pod", "myns", "CustomResource", admission.Create, nil)
attrs := admission.NewAttributesRecord(pod, "Pod", "myns", "CustomResource", "", admission.Create, nil)
err := NewServiceAccount(nil).Admit(attrs)
if err != nil {
t.Errorf("Expected non-pod resource allowed, got err: %v", err)
@@ -49,7 +49,7 @@ func TestIgnoresNonPodResource(t *testing.T) {
}
func TestIgnoresNilObject(t *testing.T) {
attrs := admission.NewAttributesRecord(nil, "Pod", "myns", string(api.ResourcePods), admission.Create, nil)
attrs := admission.NewAttributesRecord(nil, "Pod", "myns", string(api.ResourcePods), "", admission.Create, nil)
err := NewServiceAccount(nil).Admit(attrs)
if err != nil {
t.Errorf("Expected nil object allowed allowed, got err: %v", err)
@@ -58,7 +58,7 @@ func TestIgnoresNilObject(t *testing.T) {
func TestIgnoresNonPodObject(t *testing.T) {
obj := &api.Namespace{}
attrs := admission.NewAttributesRecord(obj, "Pod", "myns", string(api.ResourcePods), admission.Create, nil)
attrs := admission.NewAttributesRecord(obj, "Pod", "myns", string(api.ResourcePods), "", admission.Create, nil)
err := NewServiceAccount(nil).Admit(attrs)
if err != nil {
t.Errorf("Expected non pod object allowed, got err: %v", err)
@@ -78,7 +78,7 @@ func TestIgnoresMirrorPod(t *testing.T) {
},
},
}
attrs := admission.NewAttributesRecord(pod, "Pod", "myns", string(api.ResourcePods), admission.Create, nil)
attrs := admission.NewAttributesRecord(pod, "Pod", "myns", string(api.ResourcePods), "", admission.Create, nil)
err := NewServiceAccount(nil).Admit(attrs)
if err != nil {
t.Errorf("Expected mirror pod without service account or secrets allowed, got err: %v", err)
@@ -96,7 +96,7 @@ func TestRejectsMirrorPodWithServiceAccount(t *testing.T) {
ServiceAccount: "default",
},
}
attrs := admission.NewAttributesRecord(pod, "Pod", "myns", string(api.ResourcePods), admission.Create, nil)
attrs := admission.NewAttributesRecord(pod, "Pod", "myns", string(api.ResourcePods), "", admission.Create, nil)
err := NewServiceAccount(nil).Admit(attrs)
if err == nil {
t.Errorf("Expected a mirror pod to be prevented from referencing a service account")
@@ -116,7 +116,7 @@ func TestRejectsMirrorPodWithSecretVolumes(t *testing.T) {
},
},
}
attrs := admission.NewAttributesRecord(pod, "Pod", "myns", string(api.ResourcePods), admission.Create, nil)
attrs := admission.NewAttributesRecord(pod, "Pod", "myns", string(api.ResourcePods), "", admission.Create, nil)
err := NewServiceAccount(nil).Admit(attrs)
if err == nil {
t.Errorf("Expected a mirror pod to be prevented from referencing a secret volume")
@@ -138,7 +138,7 @@ func TestAssignsDefaultServiceAccountAndToleratesMissingAPIToken(t *testing.T) {
})
pod := &api.Pod{}
attrs := admission.NewAttributesRecord(pod, "Pod", ns, string(api.ResourcePods), admission.Create, nil)
attrs := admission.NewAttributesRecord(pod, "Pod", ns, string(api.ResourcePods), "", admission.Create, nil)
err := admit.Admit(attrs)
if err != nil {
t.Errorf("Unexpected error: %v", err)
@@ -162,7 +162,7 @@ func TestFetchesUncachedServiceAccount(t *testing.T) {
admit := NewServiceAccount(client)
pod := &api.Pod{}
attrs := admission.NewAttributesRecord(pod, "Pod", ns, string(api.ResourcePods), admission.Create, nil)
attrs := admission.NewAttributesRecord(pod, "Pod", ns, string(api.ResourcePods), "", admission.Create, nil)
err := admit.Admit(attrs)
if err != nil {
t.Errorf("Unexpected error: %v", err)
@@ -181,7 +181,7 @@ func TestDeniesInvalidServiceAccount(t *testing.T) {
admit := NewServiceAccount(client)
pod := &api.Pod{}
attrs := admission.NewAttributesRecord(pod, "Pod", ns, string(api.ResourcePods), admission.Create, nil)
attrs := admission.NewAttributesRecord(pod, "Pod", ns, string(api.ResourcePods), "", admission.Create, nil)
err := admit.Admit(attrs)
if err == nil {
t.Errorf("Expected error for missing service account, got none")
@@ -243,7 +243,7 @@ func TestAutomountsAPIToken(t *testing.T) {
},
},
}
attrs := admission.NewAttributesRecord(pod, "Pod", ns, string(api.ResourcePods), admission.Create, nil)
attrs := admission.NewAttributesRecord(pod, "Pod", ns, string(api.ResourcePods), "", admission.Create, nil)
err := admit.Admit(attrs)
if err != nil {
t.Errorf("Unexpected error: %v", err)
@@ -321,7 +321,7 @@ func TestRespectsExistingMount(t *testing.T) {
},
},
}
attrs := admission.NewAttributesRecord(pod, "Pod", ns, string(api.ResourcePods), "CREATE", nil)
attrs := admission.NewAttributesRecord(pod, "Pod", ns, string(api.ResourcePods), "", admission.Create, nil)
err := admit.Admit(attrs)
if err != nil {
t.Errorf("Unexpected error: %v", err)
@@ -364,7 +364,7 @@ func TestAllowsReferencedSecretVolumes(t *testing.T) {
},
},
}
attrs := admission.NewAttributesRecord(pod, "Pod", ns, string(api.ResourcePods), "CREATE", nil)
attrs := admission.NewAttributesRecord(pod, "Pod", ns, string(api.ResourcePods), "", admission.Create, nil)
err := admit.Admit(attrs)
if err != nil {
t.Errorf("Unexpected error: %v", err)
@@ -392,7 +392,7 @@ func TestRejectsUnreferencedSecretVolumes(t *testing.T) {
},
},
}
attrs := admission.NewAttributesRecord(pod, "Pod", ns, string(api.ResourcePods), admission.Create, nil)
attrs := admission.NewAttributesRecord(pod, "Pod", ns, string(api.ResourcePods), "", admission.Create, nil)
err := admit.Admit(attrs)
if err == nil {
t.Errorf("Expected rejection for using a secret the service account does not reference")
@@ -421,7 +421,7 @@ func TestAllowsReferencedImagePullSecrets(t *testing.T) {
ImagePullSecrets: []api.LocalObjectReference{{Name: "foo"}},
},
}
attrs := admission.NewAttributesRecord(pod, "Pod", ns, string(api.ResourcePods), "CREATE", nil)
attrs := admission.NewAttributesRecord(pod, "Pod", ns, string(api.ResourcePods), "", admission.Create, nil)
err := admit.Admit(attrs)
if err != nil {
t.Errorf("Unexpected error: %v", err)
@@ -447,7 +447,7 @@ func TestRejectsUnreferencedImagePullSecrets(t *testing.T) {
ImagePullSecrets: []api.LocalObjectReference{{Name: "foo"}},
},
}
attrs := admission.NewAttributesRecord(pod, "Pod", ns, string(api.ResourcePods), "CREATE", nil)
attrs := admission.NewAttributesRecord(pod, "Pod", ns, string(api.ResourcePods), "", admission.Create, nil)
err := admit.Admit(attrs)
if err == nil {
t.Errorf("Expected rejection for using a secret the service account does not reference")
@@ -477,7 +477,7 @@ func TestDoNotAddImagePullSecrets(t *testing.T) {
ImagePullSecrets: []api.LocalObjectReference{{Name: "foo"}},
},
}
attrs := admission.NewAttributesRecord(pod, "Pod", ns, string(api.ResourcePods), "CREATE", nil)
attrs := admission.NewAttributesRecord(pod, "Pod", ns, string(api.ResourcePods), "", admission.Create, nil)
err := admit.Admit(attrs)
if err != nil {
t.Errorf("Unexpected error: %v", err)
@@ -508,7 +508,7 @@ func TestAddImagePullSecrets(t *testing.T) {
admit.serviceAccounts.Add(sa)
pod := &api.Pod{}
attrs := admission.NewAttributesRecord(pod, "Pod", ns, string(api.ResourcePods), "CREATE", nil)
attrs := admission.NewAttributesRecord(pod, "Pod", ns, string(api.ResourcePods), "", admission.Create, nil)
err := admit.Admit(attrs)
if err != nil {
t.Errorf("Unexpected error: %v", err)