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Merge pull request #503 from mattmoyer/rework-restart-assertions-helper

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Rework integration test assertions for pod restarts.
This commit is contained in:
Matt Moyer 2021-03-17 14:38:39 -07:00 committed by GitHub
commit 3a32833306
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GPG Key ID: 4AEE18F83AFDEB23
15 changed files with 95 additions and 78 deletions
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2
test/integration/cli_test.go
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@ -35,8 +35,6 @@ import (
func TestCLIGetKubeconfigStaticToken(t *testing.T) {
env := library.IntegrationEnv(t).WithCapability(library.ClusterSigningKeyIsAvailable)
library.AssertNoRestartsDuringTest(t, env.ConciergeNamespace, "")
// Create a test webhook configuration to use with the CLI.
ctx, cancelFunc := context.WithTimeout(context.Background(), 4*time.Minute)
defer cancelFunc()

2
test/integration/concierge_api_serving_certs_test.go
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@ -23,8 +23,6 @@ func TestAPIServingCertificateAutoCreationAndRotation(t *testing.T) {
env := library.IntegrationEnv(t)
defaultServingCertResourceName := env.ConciergeAppName + "-api-tls-serving-certificate"
library.AssertNoRestartsDuringTest(t, env.ConciergeNamespace, "")
tests := []struct {
name string
forceRotation func(context.Context, kubernetes.Interface, string) error

2
test/integration/concierge_client_test.go
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@ -57,8 +57,6 @@ var maskKey = func(s string) string { return strings.ReplaceAll(s, "TESTING KEY"
func TestClient(t *testing.T) {
env := library.IntegrationEnv(t).WithCapability(library.ClusterSigningKeyIsAvailable)
library.AssertNoRestartsDuringTest(t, env.ConciergeNamespace, "")
ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
defer cancel()

2
test/integration/concierge_credentialissuer_test.go
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@ -23,8 +23,6 @@ func TestCredentialIssuer(t *testing.T) {
client := library.NewConciergeClientset(t)
aggregatedClientset := library.NewAggregatedClientset(t)
library.AssertNoRestartsDuringTest(t, env.ConciergeNamespace, "")
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
defer cancel()

18
test/integration/concierge_credentialrequest_test.go
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@ -23,9 +23,7 @@ import (
)
func TestUnsuccessfulCredentialRequest(t *testing.T) {
env := library.IntegrationEnv(t).WithCapability(library.AnonymousAuthenticationSupported)
library.AssertNoRestartsDuringTest(t, env.ConciergeNamespace, "")
_ = library.IntegrationEnv(t).WithCapability(library.AnonymousAuthenticationSupported)
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
defer cancel()
@ -44,8 +42,6 @@ func TestUnsuccessfulCredentialRequest(t *testing.T) {
func TestSuccessfulCredentialRequest(t *testing.T) {
env := library.IntegrationEnv(t).WithCapability(library.ClusterSigningKeyIsAvailable)
library.AssertNoRestartsDuringTest(t, env.ConciergeNamespace, "")
ctx, cancel := context.WithTimeout(context.Background(), 6*time.Minute)
defer cancel()
@ -131,9 +127,7 @@ func TestSuccessfulCredentialRequest(t *testing.T) {
}
func TestFailedCredentialRequestWhenTheRequestIsValidButTheTokenDoesNotAuthenticateTheUser(t *testing.T) {
env := library.IntegrationEnv(t).WithCapability(library.ClusterSigningKeyIsAvailable)
library.AssertNoRestartsDuringTest(t, env.ConciergeNamespace, "")
_ = library.IntegrationEnv(t).WithCapability(library.ClusterSigningKeyIsAvailable)
// Create a testWebhook so we have a legitimate authenticator to pass to the
// TokenCredentialRequest API.
@ -154,9 +148,7 @@ func TestFailedCredentialRequestWhenTheRequestIsValidButTheTokenDoesNotAuthentic
}
func TestCredentialRequest_ShouldFailWhenRequestDoesNotIncludeToken(t *testing.T) {
env := library.IntegrationEnv(t).WithCapability(library.ClusterSigningKeyIsAvailable)
library.AssertNoRestartsDuringTest(t, env.ConciergeNamespace, "")
_ = library.IntegrationEnv(t).WithCapability(library.ClusterSigningKeyIsAvailable)
// Create a testWebhook so we have a legitimate authenticator to pass to the
// TokenCredentialRequest API.
@ -184,9 +176,7 @@ func TestCredentialRequest_ShouldFailWhenRequestDoesNotIncludeToken(t *testing.T
}
func TestCredentialRequest_OtherwiseValidRequestWithRealTokenShouldFailWhenTheClusterIsNotCapable(t *testing.T) {
env := library.IntegrationEnv(t).WithoutCapability(library.ClusterSigningKeyIsAvailable).WithCapability(library.AnonymousAuthenticationSupported)
library.AssertNoRestartsDuringTest(t, env.ConciergeNamespace, "")
_ = library.IntegrationEnv(t).WithoutCapability(library.ClusterSigningKeyIsAvailable).WithCapability(library.AnonymousAuthenticationSupported)
ctx, cancel := context.WithTimeout(context.Background(), 20*time.Second)
defer cancel()

2
test/integration/concierge_kubecertagent_test.go
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@ -28,8 +28,6 @@ const (
func TestKubeCertAgent(t *testing.T) {
env := library.IntegrationEnv(t).WithCapability(library.ClusterSigningKeyIsAvailable)
library.AssertNoRestartsDuringTest(t, env.ConciergeNamespace, "")
ctx, cancel := context.WithTimeout(context.Background(), 1*time.Minute)
defer cancel()

3
test/integration/e2e_test.go
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@ -46,9 +46,6 @@ func TestE2EFullIntegration(t *testing.T) {
defer library.DumpLogs(t, env.SupervisorNamespace, "")
defer library.DumpLogs(t, "dex", "app=proxy")
library.AssertNoRestartsDuringTest(t, env.ConciergeNamespace, "")
library.AssertNoRestartsDuringTest(t, env.SupervisorNamespace, "")
ctx, cancelFunc := context.WithTimeout(context.Background(), 5*time.Minute)
defer cancelFunc()

6
test/integration/supervisor_discovery_test.go
View File

@ -45,8 +45,6 @@ func TestSupervisorOIDCDiscovery(t *testing.T) {
env := library.IntegrationEnv(t)
client := library.NewSupervisorClientset(t)
library.AssertNoRestartsDuringTest(t, env.SupervisorNamespace, "")
ns := env.SupervisorNamespace
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Minute)
@ -152,8 +150,6 @@ func TestSupervisorTLSTerminationWithSNI(t *testing.T) {
pinnipedClient := library.NewSupervisorClientset(t)
kubeClient := library.NewKubernetesClientset(t)
library.AssertNoRestartsDuringTest(t, env.SupervisorNamespace, "")
ns := env.SupervisorNamespace
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Minute)
defer cancel()
@ -225,8 +221,6 @@ func TestSupervisorTLSTerminationWithDefaultCerts(t *testing.T) {
pinnipedClient := library.NewSupervisorClientset(t)
kubeClient := library.NewKubernetesClientset(t)
library.AssertNoRestartsDuringTest(t, env.SupervisorNamespace, "")
ns := env.SupervisorNamespace
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Minute)
defer cancel()

2
test/integration/supervisor_healthz_test.go
View File

@ -29,8 +29,6 @@ func TestSupervisorHealthz(t *testing.T) {
t.Skip("PINNIPED_TEST_SUPERVISOR_HTTP_ADDRESS not defined")
}
library.AssertNoRestartsDuringTest(t, env.SupervisorNamespace, "")
ctx, cancel := context.WithTimeout(context.Background(), 2*time.Minute)
defer cancel()

2
test/integration/supervisor_login_test.go
View File

@ -44,8 +44,6 @@ func TestSupervisorLogin(t *testing.T) {
defer library.DumpLogs(t, env.SupervisorNamespace, "")
defer library.DumpLogs(t, "dex", "app=proxy")
library.AssertNoRestartsDuringTest(t, env.SupervisorNamespace, "")
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Minute)
defer cancel()

2
test/integration/supervisor_secrets_test.go
View File

@ -24,8 +24,6 @@ func TestSupervisorSecrets(t *testing.T) {
kubeClient := library.NewKubernetesClientset(t)
supervisorClient := library.NewSupervisorClientset(t)
library.AssertNoRestartsDuringTest(t, env.SupervisorNamespace, "")
ctx, cancel := context.WithTimeout(context.Background(), 2*time.Minute)
defer cancel()

2
test/integration/supervisor_upstream_test.go
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@ -17,8 +17,6 @@ import (
func TestSupervisorUpstreamOIDCDiscovery(t *testing.T) {
env := library.IntegrationEnv(t)
library.AssertNoRestartsDuringTest(t, env.SupervisorNamespace, "")
t.Run("invalid missing secret and bad issuer", func(t *testing.T) {
t.Parallel()
spec := v1alpha1.OIDCIdentityProviderSpec{

62
test/library/assertions.go
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@ -13,6 +13,7 @@ import (
"github.com/stretchr/testify/require"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/client-go/kubernetes"
)
// RequireEventuallyWithoutError is a wrapper around require.Eventually() that allows the caller to
@ -29,52 +30,77 @@ func RequireEventuallyWithoutError(
require.NoError(t, wait.PollImmediate(tick, waitFor, f), msgAndArgs...)
}
// NewRestartAssertion allows a caller to assert that there were no restarts for a Pod in the
// assertNoRestartsDuringTest allows a caller to assert that there were no restarts for a Pod in the
// provided namespace with the provided labelSelector during the lifetime of a test.
func AssertNoRestartsDuringTest(t *testing.T, namespace, labelSelector string) {
func assertNoRestartsDuringTest(t *testing.T, namespace, labelSelector string) {
t.Helper()
kubeClient := NewKubernetesClientset(t)
ctx, cancel := context.WithTimeout(context.Background(), 60*time.Second)
defer cancel()
previousRestartCounts := getRestartCounts(t, namespace, labelSelector)
previousRestartCounts := getRestartCounts(ctx, t, kubeClient, namespace, labelSelector)
t.Cleanup(func() {
currentRestartCounts := getRestartCounts(t, namespace, labelSelector)
ctx, cancel := context.WithTimeout(context.Background(), 60*time.Second)
defer cancel()
currentRestartCounts := getRestartCounts(ctx, t, kubeClient, namespace, labelSelector)
for key, previousRestartCount := range previousRestartCounts {
currentRestartCount, ok := currentRestartCounts[key]
if assert.Truef(
// If the container no longer exists, that's a test failure.
if !assert.Truef(
t,
ok,
"pod namespace/name/container %s existed at beginning of the test, but not the end",
key,
"container %s existed at beginning of the test, but not the end",
key.String(),
) {
assert.Equal(
continue
}
// Expect the restart count to be the same as it was before the test.
if !assert.Equal(
t,
previousRestartCount,
currentRestartCount,
"pod namespace/name/container %s has restarted %d times (original count was %d)",
key,
"container %s has restarted %d times (original count was %d)",
key.String(),
currentRestartCount,
previousRestartCount,
)
) {
// Attempt to dump the logs from the previous container that crashed.
dumpContainerLogs(ctx, t, kubeClient, key.namespace, key.pod, key.container, true)
}
}
})
}
func getRestartCounts(t *testing.T, namespace, labelSelector string) map[string]int32 {
t.Helper()
type containerRestartKey struct {
namespace string
pod string
container string
}
kubeClient := NewKubernetesClientset(t)
ctx, cancel := context.WithTimeout(context.Background(), 60*time.Second)
defer cancel()
func (k containerRestartKey) String() string {
return fmt.Sprintf("%s/%s/%s", k.namespace, k.pod, k.container)
}
type containerRestartMap map[containerRestartKey]int32
func getRestartCounts(ctx context.Context, t *testing.T, kubeClient kubernetes.Interface, namespace, labelSelector string) containerRestartMap {
t.Helper()
pods, err := kubeClient.CoreV1().Pods(namespace).List(ctx, metav1.ListOptions{LabelSelector: labelSelector})
require.NoError(t, err)
restartCounts := make(map[string]int32)
restartCounts := make(containerRestartMap)
for _, pod := range pods.Items {
for _, container := range pod.Status.ContainerStatuses {
key := fmt.Sprintf("%s/%s/%s", pod.Namespace, pod.Name, container.Name)
key := containerRestartKey{
namespace: pod.Namespace,
pod: pod.Name,
container: container.Name,
}
restartCounts[key] = container.RestartCount
}
}

41
test/library/dumplogs.go
View File

@ -6,12 +6,15 @@ package library
import (
"bufio"
"context"
"fmt"
"testing"
"time"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/kubernetes"
)
// DumpLogs is meant to be called in a `defer` to dump the logs of components in the cluster on a test failure.
@ -25,25 +28,37 @@ func DumpLogs(t *testing.T, namespace string, labelSelector string) {
ctx, cancel := context.WithTimeout(context.Background(), 60*time.Second)
defer cancel()
logTailLines := int64(40)
pods, err := kubeClient.CoreV1().Pods(namespace).List(ctx, metav1.ListOptions{LabelSelector: labelSelector})
require.NoError(t, err)
for _, pod := range pods.Items {
for _, container := range pod.Status.ContainerStatuses {
t.Logf("pod %s/%s container %s restarted %d times:", pod.Namespace, pod.Name, container.Name, container.RestartCount)
req := kubeClient.CoreV1().Pods(namespace).GetLogs(pod.Name, &corev1.PodLogOptions{
Container: container.Name,
TailLines: &logTailLines,
})
logReader, err := req.Stream(ctx)
require.NoError(t, err)
scanner := bufio.NewScanner(logReader)
for scanner.Scan() {
t.Logf("%s/%s/%s > %s", pod.Namespace, pod.Name, container.Name, scanner.Text())
if container.RestartCount > 0 {
dumpContainerLogs(ctx, t, kubeClient, pod.Namespace, pod.Name, container.Name, true)
}
require.NoError(t, scanner.Err())
dumpContainerLogs(ctx, t, kubeClient, pod.Namespace, pod.Name, container.Name, false)
}
}
}
func dumpContainerLogs(ctx context.Context, t *testing.T, kubeClient kubernetes.Interface, namespace, pod, container string, prev bool) {
logTailLines := int64(40)
shortName := fmt.Sprintf("%s/%s/%s", namespace, pod, container)
logReader, err := kubeClient.CoreV1().Pods(namespace).GetLogs(pod, &corev1.PodLogOptions{
Container: container,
TailLines: &logTailLines,
Previous: prev,
}).Stream(ctx)
if !assert.NoErrorf(t, err, "failed to stream logs for container %s", shortName) {
return
}
scanner := bufio.NewScanner(logReader)
for scanner.Scan() {
prefix := shortName
if prev {
prefix += " (previous)"
}
t.Logf("%s > %s", prefix, scanner.Text())
}
assert.NoError(t, scanner.Err(), "failed to read logs from container %s", shortName)
}

15
test/library/env.go
View File

@ -7,6 +7,7 @@ import (
"io/ioutil"
"os"
"strings"
"sync"
"testing"
"github.com/stretchr/testify/require"
@ -73,9 +74,17 @@ func (e *TestEnv) ProxyEnv() []string {
return []string{"http_proxy=" + e.Proxy, "https_proxy=" + e.Proxy, "no_proxy=127.0.0.1"}
}
// memoizedTestEnvsByTest maps *testing.T pointers to *TestEnv. It exists so that we don't do all the
// environment parsing N times per test and so that any implicit assertions happen only once.
var memoizedTestEnvsByTest sync.Map //nolint: gochecknoglobals
// IntegrationEnv gets the integration test environment from OS environment variables. This
// method also implies SkipUnlessIntegration().
func IntegrationEnv(t *testing.T) *TestEnv {
if existing, exists := memoizedTestEnvsByTest.Load(t); exists {
return existing.(*TestEnv)
}
t.Helper()
SkipUnlessIntegration(t)
@ -96,8 +105,12 @@ func IntegrationEnv(t *testing.T) *TestEnv {
require.NoErrorf(t, err, "capabilities specification was invalid YAML")
loadEnvVars(t, &result)
result.t = t
memoizedTestEnvsByTest.Store(t, &result)
// In every integration test, assert that no pods in our namespaces restart during the test.
assertNoRestartsDuringTest(t, result.ConciergeNamespace, "")
assertNoRestartsDuringTest(t, result.SupervisorNamespace, "")
return &result
}