Add offline integration test

test/integration/offline_test.go

+// +build integration
+
+/*
+Copyright 2016 The Kubernetes Authors All rights reserved.
+
+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 integration
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"os/exec"
+	"testing"
+	"time"
+)
+
+func TestOffline(t *testing.T) {
+	MaybeParallel(t)
+
+	t.Run("group", func(t *testing.T) {
+		for _, runtime := range []string{"docker", "crio", "containerd"} {
+			t.Run(runtime, func(t *testing.T) {
+				MaybeParallel(t)
+				WaitForStartSlot(t)
+
+				if runtime != "docker" && NoneDriver() {
+					t.Skipf("skipping %s - incompatible with none driver", t.Name())
+				}
+
+				profile := UniqueProfileName(fmt.Sprintf("offline-%s", runtime))
+				ctx, cancel := context.WithTimeout(context.Background(), 15*time.Minute)
+				defer CleanupWithLogs(t, profile, cancel)
+
+				startArgs := append([]string{"start", "-p", profile, "--alsologtostderr", "-v=1", "--wait=true", "--container-runtime", runtime})
+				c := exec.CommandContext(ctx, Target(), startArgs...)
+				env := os.Environ()
+				env = append(env, "HTTP_PROXYS=172.1.1.1")
+				env = append(env, "DOCKER_HOST=172.1.1.1")
+				rr, err := Run(t, c)
+				if err != nil {
+					// Fatal so that we may collect logs before stop/delete steps
+					t.Fatalf("%s failed: %v", rr.Args, err)
+				}
+			})
+		}
+	})
+}