191 lines
5.7 KiB
Go
191 lines
5.7 KiB
Go
// Copyright 2018 Google Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// Package image provides end-to-end integration tests for runsc. These tests require
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// docker and runsc to be installed on the machine. To set it up, run:
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//
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// ./runsc/test/install.sh [--runtime <name>]
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//
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// The tests expect the runtime name to be provided in the RUNSC_RUNTIME
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// environment variable (default: runsc-test).
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//
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// Each test calls docker commands to start up a container, and tests that it is
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// behaving properly, with various runsc commands. The container is killed and deleted
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// at the end.
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package integration
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import (
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"fmt"
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"net"
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"net/http"
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"os"
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"strings"
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"testing"
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"time"
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"gvisor.googlesource.com/gvisor/runsc/test/testutil"
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)
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// httpRequestSucceeds sends a request to a given url and checks that the status is OK.
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func httpRequestSucceeds(client http.Client, server string, port int) error {
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url := fmt.Sprintf("http://%s:%d", server, port)
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// Ensure that content is being served.
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resp, err := client.Get(url)
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if err != nil {
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return fmt.Errorf("error reaching http server: %v", err)
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}
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if want := http.StatusOK; resp.StatusCode != want {
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return fmt.Errorf("wrong response code, got: %d, want: %d", resp.StatusCode, want)
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}
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return nil
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}
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// TestLifeCycle tests a basic Create/Start/Stop docker container life cycle.
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func TestLifeCycle(t *testing.T) {
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if err := testutil.Pull("nginx"); err != nil {
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t.Fatal("docker pull failed:", err)
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}
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d := testutil.MakeDocker("lifecycle-test")
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if err := d.Create("-p", "80", "nginx"); err != nil {
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t.Fatal("docker create failed:", err)
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}
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if err := d.Start(); err != nil {
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d.CleanUp()
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t.Fatal("docker start failed:", err)
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}
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// Test that container is working
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port, err := d.FindPort(80)
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if err != nil {
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t.Fatal("docker.FindPort(80) failed: ", err)
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}
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if err := testutil.WaitForHTTP(port, 5*time.Second); err != nil {
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t.Fatal("WaitForHTTP() timeout:", err)
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}
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client := http.Client{Timeout: time.Duration(2 * time.Second)}
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if err := httpRequestSucceeds(client, "localhost", port); err != nil {
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t.Error("http request failed:", err)
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}
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if err := d.Stop(); err != nil {
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d.CleanUp()
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t.Fatal("docker stop failed:", err)
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}
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if err := d.Remove(); err != nil {
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t.Fatal("docker rm failed:", err)
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}
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}
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func TestPauseResume(t *testing.T) {
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if !testutil.IsPauseResumeSupported() {
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t.Log("Pause/resume is not supported, skipping test.")
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return
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}
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if err := testutil.Pull("google/python-hello"); err != nil {
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t.Fatal("docker pull failed:", err)
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}
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d := testutil.MakeDocker("pause-resume-test")
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if out, err := d.Run("-p", "8080", "google/python-hello"); err != nil {
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t.Fatalf("docker run failed: %v\nout: %s", err, out)
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}
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defer d.CleanUp()
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// Find where port 8080 is mapped to.
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port, err := d.FindPort(8080)
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if err != nil {
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t.Fatal("docker.FindPort(8080) failed:", err)
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}
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// Wait until it's up and running.
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if err := testutil.WaitForHTTP(port, 20*time.Second); err != nil {
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t.Fatal("WaitForHTTP() timeout:", err)
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}
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// Check that container is working.
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client := http.Client{Timeout: time.Duration(2 * time.Second)}
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if err := httpRequestSucceeds(client, "localhost", port); err != nil {
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t.Error("http request failed:", err)
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}
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if err := d.Pause(); err != nil {
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t.Fatal("docker pause failed:", err)
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}
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// Check if container is paused.
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switch _, err := client.Get(fmt.Sprintf("http://localhost:%d", port)); v := err.(type) {
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case nil:
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t.Errorf("http req expected to fail but it succeeded")
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case net.Error:
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if !v.Timeout() {
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t.Errorf("http req got error %v, wanted timeout", v)
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}
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default:
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t.Errorf("http req got unexpected error %v", v)
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}
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if err := d.Unpause(); err != nil {
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t.Fatal("docker unpause failed:", err)
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}
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// Wait until it's up and running.
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if err := testutil.WaitForHTTP(port, 20*time.Second); err != nil {
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t.Fatal("WaitForHTTP() timeout:", err)
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}
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// Check if container is working again.
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if err := httpRequestSucceeds(client, "localhost", port); err != nil {
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t.Error("http request failed:", err)
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}
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}
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// Create client and server that talk to each other using the local IP.
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func TestConnectToSelf(t *testing.T) {
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d := testutil.MakeDocker("connect-to-self-test")
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// Creates server that replies "server" and exists. Sleeps at the end because
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// 'docker exec' gets killed if the init process exists before it can finish.
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if _, err := d.Run("ubuntu:trusty", "/bin/sh", "-c", "echo server | nc -l -p 8080 && sleep 1"); err != nil {
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t.Fatal("docker run failed:", err)
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}
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defer d.CleanUp()
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// Finds IP address for host.
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ip, err := d.Exec("/bin/sh", "-c", "cat /etc/hosts | grep ${HOSTNAME} | awk '{print $1}'")
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if err != nil {
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t.Fatal("docker exec failed:", err)
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}
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ip = strings.TrimRight(ip, "\n")
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// Runs client that sends "client" to the server and exits.
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reply, err := d.Exec("/bin/sh", "-c", fmt.Sprintf("echo client | nc %s 8080", ip))
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if err != nil {
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t.Fatal("docker exec failed:", err)
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}
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// Ensure both client and server got the message from each other.
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if want := "server\n"; reply != want {
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t.Errorf("Error on server, want: %q, got: %q", want, reply)
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}
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if err := d.WaitForOutput("^client\n$", 1*time.Second); err != nil {
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t.Fatal("docker.WaitForOutput(client) timeout:", err)
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}
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}
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func MainTest(m *testing.M) {
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testutil.EnsureSupportedDockerVersion()
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os.Exit(m.Run())
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}
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