Add integration test

test/integration/docker_network_test.go

@@ -0,0 +1,59 @@
+// +build integration
+
+/*
+Copyright 2020 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"
+	"os/exec"
+	"testing"
+)
+
+func TestDockerNetworkFlag(t *testing.T) {
+	if !KicDriver() {
+		t.Skip("only runs with docker driver")
+	}
+
+	tests := []struct {
+		description string
+		flag        string
+	}{
+		{
+			description: "create custom network",
+			flag:        "--docker-network=\"\"",
+		}, {
+			description: "use default bridge network",
+			flag:        "--docker-network=bridge",
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.description, func(t *testing.T) {
+			profile := UniqueProfileName("docker-network")
+			ctx, cancel := context.WithTimeout(context.Background(), Minutes(5))
+			defer Cleanup(t, profile, cancel)
+
+			startArgs := []string{"start", "-p", profile, test.flag}
+			c := exec.CommandContext(ctx, Target(), startArgs...)
+			rr, err := Run(t, c)
+			if err != nil {
+				t.Fatalf("%v failed: %v\n%v", rr.Command(), err, rr.Output())
+			}
+		})
+	}
+}