proxy: Add tests for kube-proxy config defaulting

Signed-off-by: Christopher M. Luciano <[email protected]>

pkg/proxy/apis/config/v1alpha1/BUILD

@@ -3,6 +3,7 @@ package(default_visibility = ["//visibility:public"])
 load(
     "@io_bazel_rules_go//go:def.bzl",
     "go_library",
+    "go_test",
 )
 
 go_library(
@@ -43,3 +44,15 @@ filegroup(
     srcs = [":package-srcs"],
     tags = ["automanaged"],
 )
+
+go_test(
+    name = "go_default_test",
+    srcs = ["defaults_test.go"],
+    embed = [":go_default_library"],
+    deps = [
+        "//staging/src/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
+        "//staging/src/k8s.io/component-base/config/v1alpha1:go_default_library",
+        "//staging/src/k8s.io/kube-proxy/config/v1alpha1:go_default_library",
+        "//vendor/github.com/google/go-cmp/cmp:go_default_library",
+    ],
+)

pkg/proxy/apis/config/v1alpha1/defaults_test.go

@@ -0,0 +1,117 @@
+/*
+Copyright 2020 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 v1alpha1
+
+import (
+	"testing"
+	"time"
+
+	"github.com/google/go-cmp/cmp"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	componentbaseconfig "k8s.io/component-base/config/v1alpha1"
+	kubeproxyconfigv1alpha1 "k8s.io/kube-proxy/config/v1alpha1"
+)
+
+func TestDefaultsKubeProxyConfiguration(t *testing.T) {
+	masqBit := int32(14)
+	oomScore := int32(-999)
+	ctMaxPerCore := int32(32768)
+	ctMin := int32(131072)
+	testCases := []struct {
+		name     string
+		original *kubeproxyconfigv1alpha1.KubeProxyConfiguration
+		expected *kubeproxyconfigv1alpha1.KubeProxyConfiguration
+	}{
+		{
+			name:     "empty-config",
+			original: &kubeproxyconfigv1alpha1.KubeProxyConfiguration{},
+			expected: &kubeproxyconfigv1alpha1.KubeProxyConfiguration{
+				FeatureGates:       map[string]bool{},
+				BindAddress:        "0.0.0.0",
+				HealthzBindAddress: "0.0.0.0:10256",
+				MetricsBindAddress: "127.0.0.1:10249",
+				ClientConnection: componentbaseconfig.ClientConnectionConfiguration{
+					ContentType: "application/vnd.kubernetes.protobuf",
+					QPS:         5,
+					Burst:       10,
+				},
+				IPTables: kubeproxyconfigv1alpha1.KubeProxyIPTablesConfiguration{
+					MasqueradeBit: &masqBit,
+					MasqueradeAll: false,
+					SyncPeriod:    metav1.Duration{Duration: 30 * time.Second},
+					MinSyncPeriod: metav1.Duration{Duration: 1 * time.Second},
+				},
+				IPVS: kubeproxyconfigv1alpha1.KubeProxyIPVSConfiguration{
+					SyncPeriod: metav1.Duration{Duration: 30 * time.Second},
+				},
+				OOMScoreAdj:    &oomScore,
+				UDPIdleTimeout: metav1.Duration{Duration: 250 * time.Millisecond},
+				Conntrack: kubeproxyconfigv1alpha1.KubeProxyConntrackConfiguration{
+					MaxPerCore:            &ctMaxPerCore,
+					Min:                   &ctMin,
+					TCPEstablishedTimeout: &metav1.Duration{Duration: 24 * time.Hour},
+					TCPCloseWaitTimeout:   &metav1.Duration{Duration: 1 * time.Hour},
+				},
+				ConfigSyncPeriod: metav1.Duration{Duration: 15 * time.Minute},
+			},
+		},
+		{
+			name: "metrics and healthz address with no port",
+			original: &kubeproxyconfigv1alpha1.KubeProxyConfiguration{
+				MetricsBindAddress: "127.0.0.1",
+				HealthzBindAddress: "127.0.0.1",
+			},
+			expected: &kubeproxyconfigv1alpha1.KubeProxyConfiguration{
+				FeatureGates:       map[string]bool{},
+				BindAddress:        "0.0.0.0",
+				HealthzBindAddress: "127.0.0.1:10256",
+				MetricsBindAddress: "127.0.0.1:10249",
+				ClientConnection: componentbaseconfig.ClientConnectionConfiguration{
+					ContentType: "application/vnd.kubernetes.protobuf",
+					QPS:         5,
+					Burst:       10,
+				},
+				IPTables: kubeproxyconfigv1alpha1.KubeProxyIPTablesConfiguration{
+					MasqueradeBit: &masqBit,
+					MasqueradeAll: false,
+					SyncPeriod:    metav1.Duration{Duration: 30 * time.Second},
+					MinSyncPeriod: metav1.Duration{Duration: 1 * time.Second},
+				},
+				IPVS: kubeproxyconfigv1alpha1.KubeProxyIPVSConfiguration{
+					SyncPeriod: metav1.Duration{Duration: 30 * time.Second},
+				},
+				OOMScoreAdj:    &oomScore,
+				UDPIdleTimeout: metav1.Duration{Duration: 250 * time.Millisecond},
+				Conntrack: kubeproxyconfigv1alpha1.KubeProxyConntrackConfiguration{
+					MaxPerCore:            &ctMaxPerCore,
+					Min:                   &ctMin,
+					TCPEstablishedTimeout: &metav1.Duration{Duration: 24 * time.Hour},
+					TCPCloseWaitTimeout:   &metav1.Duration{Duration: 1 * time.Hour},
+				},
+				ConfigSyncPeriod: metav1.Duration{Duration: 15 * time.Minute},
+			},
+		},
+	}
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			SetDefaults_KubeProxyConfiguration(tc.original)
+			if diff := cmp.Diff(tc.expected, tc.original); diff != "" {
+				t.Errorf("Got unexpected defaults (-want, +got):\n%s", diff)
+			}
+		})
+	}
+}