Created runsc and docker integration tests.

Moved some of the docker image functions to testutil.go.
Test runsc commands create, start, stop, pause, and resume.

PiperOrigin-RevId: 204138452
Change-Id: Id00bc58d2ad230db5e9e905eed942187e68e7c7b

1 files changed, 148 insertions, 0 deletions

diff --git a/runsc/test/integration/integration_test.go b/runsc/test/integration/integration_test.go
new file mode 100644
index 000000000..09d845bfc
--- /dev/null
+++ b/runsc/test/integration/integration_test.go
@@ -0,0 +1,148 @@
+// 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.
+
+// Package image provides end-to-end integration tests for runsc. These tests require
+// docker and runsc to be installed on the machine. To set it up, run:
+//
+//     ./runsc/test/install.sh [--runtime <name>]
+//
+// The tests expect the runtime name to be provided in the RUNSC_RUNTIME
+// environment variable (default: runsc-test).
+//
+// Each test calls docker commands to start up a container, and tests that it is
+// behaving properly, with various runsc commands. The container is killed and deleted
+// at the end.
+
+package integration
+
+import (
+	"fmt"
+	"net"
+	"net/http"
+	"os"
+	"testing"
+	"time"
+
+	"gvisor.googlesource.com/gvisor/runsc/test/testutil"
+)
+
+// This container is a docker image for the Flask microframework hello world application.
+const container = "python-hello-test"
+
+// httpRequestSucceeds sends a request to a given url and checks that the status is OK.
+func httpRequestSucceeds(client http.Client, url string) error {
+	// Ensure that content is being served.
+	resp, err := client.Get(url)
+	if err != nil {
+		return fmt.Errorf("error reaching http server: %v", err)
+	}
+	if want := http.StatusOK; resp.StatusCode != want {
+		return fmt.Errorf("wrong response code, got: %d, want: %d", resp.StatusCode, want)
+	}
+	return nil
+}
+
+// TestLifeCycle tests a basic Create/Start/Stop docker container life cycle.
+func TestLifeCycle(t *testing.T) {
+	d := testutil.MakeDocker(container)
+
+	// Test docker create.
+	if out, err := d.Do("create", "--runtime", d.Runtime, "--name", d.Name, "-p", "8080", "google/python-hello"); err != nil {
+		t.Fatalf("docker create failed: %v\nout: %s", err, out)
+	}
+
+	// Test docker start.
+	if out, err := d.Do("start", d.Name); err != nil {
+		d.CleanUp()
+		t.Fatalf("docker start failed: %v\nout: %s", err, out)
+	}
+
+	// Test docker stop.
+	if out, err := d.Do("stop", d.Name); err != nil {
+		d.CleanUp()
+		t.Fatalf("docker stop failed: %v\nout: %s", err, out)
+	}
+
+	// Test removing the container.
+	if out, err := d.Do("rm", d.Name); err != nil {
+		t.Fatalf("docker rm failed: %v\nout: %s", err, out)
+	}
+}
+
+func TestPauseResume(t *testing.T) {
+	d := testutil.MakeDocker(container)
+	if out, err := d.Run("-p", "8080", "google/python-hello"); err != nil {
+		t.Fatalf("docker run failed: %v\nout: %s", err, out)
+	}
+	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.
+	if err := d.WaitForHTTP(port, 5*time.Second); err != nil {
+		t.Fatalf("docker.WaitForHTTP() timeout: %v", err)
+	}
+
+	timeout := time.Duration(2 * time.Second)
+	client := http.Client{
+		Timeout: timeout,
+	}
+
+	url := fmt.Sprintf("http://localhost:%d", port)
+	// Check that container is working.
+	if err := httpRequestSucceeds(client, url); err != nil {
+		t.Errorf("http request failed: %v", err)
+	}
+
+	// Pause container.
+	if out, err := d.Do("pause", d.Name); err != nil {
+		t.Fatalf("docker pause failed: %v\nout: %s", err, out)
+	}
+
+	// Check if container is paused.
+	switch _, err := client.Get(url); v := err.(type) {
+	case nil:
+		t.Errorf("http req expected to fail but it succeeded")
+	case net.Error:
+		if !v.Timeout() {
+			t.Errorf("http req got error %v, wanted timeout", v)
+		}
+	default:
+		t.Errorf("http req got unexpected error %v", v)
+	}
+
+	// Resume container.
+	if out, err := d.Do("unpause", d.Name); err != nil {
+		t.Fatalf("docker unpause failed: %v\nout: %s", err, out)
+	}
+
+	// Wait until it's up and running.
+	if err := d.WaitForHTTP(port, 5*time.Second); err != nil {
+		t.Fatalf("docker.WaitForHTTP() timeout: %v", err)
+	}
+
+	// Check if container is working again.
+	if err := httpRequestSucceeds(client, url); err != nil {
+		t.Errorf("http request failed: %v", err)
+	}
+}
+
+func MainTest(m *testing.M) {
+	testutil.EnsureSupportedDockerVersion()
+	os.Exit(m.Run())
+}