Adding unit tests for kube-scheduler Config Complete() method.

cmd/kube-scheduler/app/config/BUILD

@@ -1,4 +1,4 @@
-load("@io_bazel_rules_go//go:def.bzl", "go_library")
+load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test")
 
 go_library(
     name = "go_default_library",
@@ -33,3 +33,13 @@ filegroup(
     tags = ["automanaged"],
     visibility = ["//visibility:public"],
 )
+
+go_test(
+    name = "go_default_test",
+    srcs = ["config_test.go"],
+    embed = [":go_default_library"],
+    deps = [
+        "//staging/src/k8s.io/apiserver/pkg/server:go_default_library",
+        "//vendor/github.com/google/go-cmp/cmp:go_default_library",
+    ],
+)

cmd/kube-scheduler/app/config/config_test.go

@@ -0,0 +1,67 @@
+/*
+Copyright 2018 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 config
+
+import (
+	"testing"
+
+	"github.com/google/go-cmp/cmp"
+	apiserver "k8s.io/apiserver/pkg/server"
+)
+
+func TestConfigComplete(t *testing.T) {
+	scenarios := []struct {
+		name   string
+		want   *Config
+		config *Config
+	}{
+		{
+			name: "SetInsecureServingName",
+			want: &Config{
+				InsecureServing: &apiserver.DeprecatedInsecureServingInfo{
+					Name: "healthz",
+				},
+			},
+			config: &Config{
+				InsecureServing: &apiserver.DeprecatedInsecureServingInfo{},
+			},
+		},
+		{
+			name: "SetMetricsInsecureServingName",
+			want: &Config{
+				InsecureMetricsServing: &apiserver.DeprecatedInsecureServingInfo{
+					Name: "metrics",
+				},
+			},
+			config: &Config{
+				InsecureMetricsServing: &apiserver.DeprecatedInsecureServingInfo{},
+			},
+		},
+	}
+
+	for _, scenario := range scenarios {
+		t.Run(scenario.name, func(t *testing.T) {
+			cc := scenario.config.Complete()
+
+			returnValue := cc.completedConfig.Config
+
+			if diff := cmp.Diff(scenario.want, returnValue); diff != "" {
+				t.Errorf("Complete(): Unexpected return value (-want, +got): %s", diff)
+			}
+		})
+	}
+}