update dependencies

Signed-off-by: hongming <talonwan@yunify.com>

vendor/k8s.io/component-base/metrics/testutil/testutil.go

@@ -0,0 +1,70 @@
+/*
+Copyright 2019 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 testutil
+
+import (
+	"fmt"
+	"io"
+
+	"github.com/prometheus/client_golang/prometheus/testutil"
+
+	apimachineryversion "k8s.io/apimachinery/pkg/version"
+	"k8s.io/component-base/metrics"
+)
+
+// CollectAndCompare registers the provided Collector with a newly created
+// pedantic Registry. It then does the same as GatherAndCompare, gathering the
+// metrics from the pedantic Registry.
+func CollectAndCompare(c metrics.Collector, expected io.Reader, metricNames ...string) error {
+	return testutil.CollectAndCompare(c, expected, metricNames...)
+}
+
+// GatherAndCompare gathers all metrics from the provided Gatherer and compares
+// it to an expected output read from the provided Reader in the Prometheus text
+// exposition format. If any metricNames are provided, only metrics with those
+// names are compared.
+func GatherAndCompare(g metrics.Gatherer, expected io.Reader, metricNames ...string) error {
+	return testutil.GatherAndCompare(g, expected, metricNames...)
+}
+
+// CustomCollectAndCompare registers the provided StableCollector with a newly created
+// registry. It then does the same as GatherAndCompare, gathering the
+// metrics from the pedantic Registry.
+func CustomCollectAndCompare(c metrics.StableCollector, expected io.Reader, metricNames ...string) error {
+	registry := metrics.NewKubeRegistry()
+	registry.CustomMustRegister(c)
+
+	return GatherAndCompare(registry, expected, metricNames...)
+}
+
+// NewFakeKubeRegistry creates a fake `KubeRegistry` that takes the input version as `build in version`.
+// It should only be used in testing scenario especially for the deprecated metrics.
+// The input version format should be `major.minor.patch`, e.g. '1.18.0'.
+func NewFakeKubeRegistry(ver string) metrics.KubeRegistry {
+	backup := metrics.BuildVersion
+	defer func() {
+		metrics.BuildVersion = backup
+	}()
+
+	metrics.BuildVersion = func() apimachineryversion.Info {
+		return apimachineryversion.Info{
+			GitVersion: fmt.Sprintf("v%s-alpha+1.12345", ver),
+		}
+	}
+
+	return metrics.NewKubeRegistry()
+}