Add ruby image tests

PiperOrigin-RevId: 215009066
Change-Id: I54ab920fa649cf4d0817f7cb8ea76f9126523330

runsc/test/image/BUILD

@@ -11,6 +11,8 @@ go_test(
     data = [
         "latin10k.txt",
         "mysql.sql",
+        "ruby.rb",
+        "ruby.sh",
     ],
     embed = [":image"],
     tags = [

runsc/test/image/image_test.go

@@ -30,6 +30,7 @@ import (
 	"io/ioutil"
 	"net/http"
 	"os"
+	"path/filepath"
 	"strings"
 	"testing"
 	"time"
@@ -256,6 +257,54 @@ func TestTomcat(t *testing.T) {
 	}
 }
 
+func TestRuby(t *testing.T) {
+	if err := testutil.Pull("ruby"); err != nil {
+		t.Fatalf("docker pull failed: %v", err)
+	}
+	d := testutil.MakeDocker("ruby-test")
+
+	dir, err := testutil.PrepareFiles("ruby.rb", "ruby.sh")
+	if err != nil {
+		t.Fatalf("PrepareFiles() failed: %v", err)
+	}
+	if err := os.Chmod(filepath.Join(dir, "ruby.sh"), 0333); err != nil {
+		t.Fatalf("os.Chmod(%q, 0333) failed: %v", dir, err)
+	}
+
+	if _, err := d.Run("-p", "8080", "-v", testutil.MountArg(dir, "/src:ro"), "ruby", "/src/ruby.sh"); err != nil {
+		t.Fatalf("docker run failed: %v", err)
+	}
+	defer d.CleanUp()
+
+	// Find where port 8080 is mapped to.
+	port, err := d.FindPort(8080)
+	if err != nil {
+		t.Fatalf("docker.FindPort(8080) failed: %v", err)
+	}
+
+	// Wait until it's up and running, 'gem install' can take some time.
+	if err := testutil.WaitForHTTP(port, 30*time.Second); err != nil {
+		t.Fatalf("WaitForHTTP() timeout: %v", err)
+	}
+
+	// Ensure that content is being served.
+	url := fmt.Sprintf("http://localhost:%d", port)
+	resp, err := http.Get(url)
+	if err != nil {
+		t.Errorf("error reaching http server: %v", err)
+	}
+	if want := http.StatusOK; resp.StatusCode != want {
+		t.Errorf("wrong response code, got: %d, want: %d", resp.StatusCode, want)
+	}
+	body, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		t.Fatalf("error reading body: %v", err)
+	}
+	if got, want := string(body), "Hello World"; !strings.Contains(got, want) {
+		t.Errorf("invalid body content, got: %q, want: %q", got, want)
+	}
+}
+
 func MainTest(m *testing.M) {
 	testutil.EnsureSupportedDockerVersion()
 	os.Exit(m.Run())

runsc/test/image/ruby.rb

@@ -0,0 +1,23 @@
+# Copyright 2018 Google Inc.
+#
+# 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.
+
+require 'sinatra'
+
+set :bind, "0.0.0.0"
+set :port, 8080
+
+get '/' do
+  'Hello World'
+end
+

runsc/test/image/ruby.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+
+# Copyright 2018 Google Inc.
+#
+# 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.
+
+set -e
+
+gem install sinatra
+ruby /src/ruby.rb

runsc/test/testutil/docker.go

@@ -162,6 +162,11 @@ func (d *Docker) Run(args ...string) (string, error) {
 	return do(a...)
 }
 
+// Logs calls 'docker logs'.
+func (d *Docker) Logs() (string, error) {
+	return do("logs", d.Name)
+}
+
 // Exec calls 'docker exec' with the arguments provided.
 func (d *Docker) Exec(args ...string) (string, error) {
 	a := []string{"exec", d.Name}
@@ -193,12 +198,14 @@ func (d *Docker) Remove() error {
 	return nil
 }
 
-// CleanUp kills and deletes the container.
-func (d *Docker) CleanUp() error {
+// CleanUp kills and deletes the container (best effort).
+func (d *Docker) CleanUp() {
 	if _, err := do("kill", d.Name); err != nil {
-		return fmt.Errorf("error killing container %q: %v", d.Name, err)
+		log.Printf("error killing container %q: %v", d.Name, err)
+	}
+	if err := d.Remove(); err != nil {
+		log.Print(err)
 	}
-	return d.Remove()
 }
 
 // FindPort returns the host port that is mapped to 'sandboxPort'. This calls
@@ -223,7 +230,7 @@ func (d *Docker) WaitForOutput(pattern string, timeout time.Duration) (string, e
 	var out string
 	for exp := time.Now().Add(timeout); time.Now().Before(exp); {
 		var err error
-		out, err = do("logs", d.Name)
+		out, err = d.Logs()
 		if err != nil {
 			return "", err
 		}