test/integration: add test helper to avoid race conditions

We were seeing a race in this test code since the require.NoError() and
require.Eventually() would write to the same testing.T state on separate
goroutines. Hopefully this helper function should cover the cases when we want
to require.NoError() inside a require.Eventually() without causing a race.

Signed-off-by: Andrew Keesler <akeesler@vmware.com>
Co-authored-by: Margo Crawford <margaretc@vmware.com>
Co-authored-by: Monis Khan <i@monis.app>

test/integration/kubeclient_test.go

@@ -258,16 +258,15 @@ func hasOwnerRef(t *testing.T, obj metav1.Object, ref metav1.OwnerReference) {
 func isEventuallyDeleted(t *testing.T, f func() error) {
 	t.Helper()
 
-	require.Eventually(t, func() bool {
+	library.RequireEventuallyWithoutError(t, func() (bool, error) {
 		err := f()
 		switch {
 		case err == nil:
-			return false
+			return false, nil
 		case errors.IsNotFound(err):
-			return true
+			return true, nil
 		default:
-			require.NoError(t, err)
+			return false, err
-			return false
 		}
 	}, time.Minute, time.Second)
 }

test/library/assertions.go

@@ -0,0 +1,26 @@
+// Copyright 2021 the Pinniped contributors. All Rights Reserved.
+// SPDX-License-Identifier: Apache-2.0
+
+package library
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/require"
+	"k8s.io/apimachinery/pkg/util/wait"
+)
+
+// RequireEventuallyWithoutError is a wrapper around require.Eventually() that allows the caller to
+// return an error from the condition function. If the condition function returns an error at any
+// point, the assertion will immediately fail.
+func RequireEventuallyWithoutError(
+	t *testing.T,
+	f func() (bool, error),
+	waitFor time.Duration,
+	tick time.Duration,
+	msgAndArgs ...interface{},
+) {
+	t.Helper()
+	require.NoError(t, wait.PollImmediate(tick, waitFor, f), msgAndArgs...)
+}