diff --git a/klogr_helper_test.go b/klogr_helper_test.go
new file mode 100644
index 00000000..8ae119f1
--- /dev/null
+++ b/klogr_helper_test.go
@@ -0,0 +1,35 @@
+/*
+Copyright 2023 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package klog_test
+
+import (
+	"testing"
+
+	"k8s.io/klog/v2"
+)
+
+func testVerbosity(t *testing.T, logger klog.Logger) {
+	// This runs with -v=5 -vmodule=klog_helper_test=10.
+	logger.V(11).Info("v11 not visible from klogr_helper_test.go")
+	if logger.V(11).Enabled() {
+		t.Error("V(11).Enabled() in klogr_helper_test.go should have returned false.")
+	}
+	logger.V(10).Info("v10 visible from klogr_helper_test.go")
+	if !logger.V(10).Enabled() {
+		t.Error("V(10).Enabled() in klogr_helper_test.go should have returned true.")
+	}
+}
diff --git a/klogr_test.go b/klogr_test.go
new file mode 100644
index 00000000..19975031
--- /dev/null
+++ b/klogr_test.go
@@ -0,0 +1,67 @@
+/*
+Copyright 2023 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package klog_test
+
+import (
+	"bytes"
+	"flag"
+	"regexp"
+	"testing"
+
+	"k8s.io/klog/v2"
+)
+
+func TestVerbosity(t *testing.T) {
+	state := klog.CaptureState()
+	defer state.Restore()
+
+	var fs flag.FlagSet
+	klog.InitFlags(&fs)
+	if err := fs.Set("v", "5"); err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if err := fs.Set("vmodule", "klogr_helper_test=10"); err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if err := fs.Set("logtostderr", "false"); err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	var buffer bytes.Buffer
+	klog.SetOutput(&buffer)
+	logger := klog.Background()
+
+	// -v=5 is in effect here.
+	logger.V(6).Info("v6 not visible from klogr_test.go")
+	if logger.V(6).Enabled() {
+		t.Error("V(6).Enabled() in klogr_test.go should have returned false.")
+	}
+	logger.V(5).Info("v5 visible from klogr_test.go")
+	if !logger.V(5).Enabled() {
+		t.Error("V(5).Enabled() in klogr_test.go should have returned true.")
+	}
+
+	// Now test with -v=5 -vmodule=klogr_helper_test=10.
+	testVerbosity(t, logger)
+
+	klog.Flush()
+	expected := `^.*v5 visible from klogr_test.go.*
+.*v10 visible from klogr_helper_test.go.*
+`
+	if !regexp.MustCompile(expected).Match(buffer.Bytes()) {
+		t.Errorf("Output did not match regular expression.\nOutput:\n%s\n\nRegular expression:\n%s\n", buffer.String(), expected)
+	}
+}