Impose order on test scripts.

The simple test script has gotten out of control. Shard this script into
different pieces and attempt to impose order on overall test structure. This
change helps lay some of the foundations for future improvements.

 * The runsc/test directories are moved into just test/.
 * The runsc/test/testutil package is split into logical pieces.
 * The scripts/ directory contains new top-level targets.
 * Each test is now responsible for building targets it requires.
 * The install functionality is moved into `runsc` itself for simplicity.
 * The existing kokoro run_tests.sh file now just calls all (can be split).

After this change is merged,  I will create multiple distinct workflows for
Kokoro, one for each of the scripts currently targeted by `run_tests.sh` today,
which should dramatically reduce the time-to-run for the Kokoro tests, and
provides a better foundation for further improvements to the infrastructure.

PiperOrigin-RevId: 267081397

1 files changed, 0 insertions, 237 deletions

diff --git a/runsc/test/root/cgroup_test.go b/runsc/test/root/cgroup_test.go
deleted file mode 100644
index 5392dc6e0..000000000
--- a/runsc/test/root/cgroup_test.go
+++ /dev/null
@@ -1,237 +0,0 @@
-// Copyright 2018 The gVisor Authors.
-//
-// 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 root
-
-import (
-	"bufio"
-	"fmt"
-	"io/ioutil"
-	"os"
-	"os/exec"
-	"path/filepath"
-	"strconv"
-	"strings"
-	"testing"
-
-	"gvisor.dev/gvisor/runsc/cgroup"
-	"gvisor.dev/gvisor/runsc/test/testutil"
-)
-
-func verifyPid(pid int, path string) error {
-	f, err := os.Open(path)
-	if err != nil {
-		return err
-	}
-	defer f.Close()
-
-	var gots []int
-	scanner := bufio.NewScanner(f)
-	for scanner.Scan() {
-		got, err := strconv.Atoi(scanner.Text())
-		if err != nil {
-			return err
-		}
-		if got == pid {
-			return nil
-		}
-		gots = append(gots, got)
-	}
-	if scanner.Err() != nil {
-		return scanner.Err()
-	}
-	return fmt.Errorf("got: %s, want: %d", gots, pid)
-}
-
-// TestCgroup sets cgroup options and checks that cgroup was properly configured.
-func TestCgroup(t *testing.T) {
-	if err := testutil.Pull("alpine"); err != nil {
-		t.Fatal("docker pull failed:", err)
-	}
-	d := testutil.MakeDocker("cgroup-test")
-
-	attrs := []struct {
-		arg            string
-		ctrl           string
-		file           string
-		want           string
-		skipIfNotFound bool
-	}{
-		{
-			arg:  "--cpu-shares=1000",
-			ctrl: "cpu",
-			file: "cpu.shares",
-			want: "1000",
-		},
-		{
-			arg:  "--cpu-period=2000",
-			ctrl: "cpu",
-			file: "cpu.cfs_period_us",
-			want: "2000",
-		},
-		{
-			arg:  "--cpu-quota=3000",
-			ctrl: "cpu",
-			file: "cpu.cfs_quota_us",
-			want: "3000",
-		},
-		{
-			arg:  "--cpuset-cpus=0",
-			ctrl: "cpuset",
-			file: "cpuset.cpus",
-			want: "0",
-		},
-		{
-			arg:  "--cpuset-mems=0",
-			ctrl: "cpuset",
-			file: "cpuset.mems",
-			want: "0",
-		},
-		{
-			arg:  "--kernel-memory=100MB",
-			ctrl: "memory",
-			file: "memory.kmem.limit_in_bytes",
-			want: "104857600",
-		},
-		{
-			arg:  "--memory=1GB",
-			ctrl: "memory",
-			file: "memory.limit_in_bytes",
-			want: "1073741824",
-		},
-		{
-			arg:  "--memory-reservation=500MB",
-			ctrl: "memory",
-			file: "memory.soft_limit_in_bytes",
-			want: "524288000",
-		},
-		{
-			arg:            "--memory-swap=2GB",
-			ctrl:           "memory",
-			file:           "memory.memsw.limit_in_bytes",
-			want:           "2147483648",
-			skipIfNotFound: true, // swap may be disabled on the machine.
-		},
-		{
-			arg:  "--memory-swappiness=5",
-			ctrl: "memory",
-			file: "memory.swappiness",
-			want: "5",
-		},
-		{
-			arg:  "--blkio-weight=750",
-			ctrl: "blkio",
-			file: "blkio.weight",
-			want: "750",
-		},
-	}
-
-	args := make([]string, 0, len(attrs))
-	for _, attr := range attrs {
-		args = append(args, attr.arg)
-	}
-
-	args = append(args, "alpine", "sleep", "10000")
-	if err := d.Run(args...); err != nil {
-		t.Fatal("docker create failed:", err)
-	}
-	defer d.CleanUp()
-
-	gid, err := d.ID()
-	if err != nil {
-		t.Fatalf("Docker.ID() failed: %v", err)
-	}
-	t.Logf("cgroup ID: %s", gid)
-
-	// Check list of attributes defined above.
-	for _, attr := range attrs {
-		path := filepath.Join("/sys/fs/cgroup", attr.ctrl, "docker", gid, attr.file)
-		out, err := ioutil.ReadFile(path)
-		if err != nil {
-			if os.IsNotExist(err) && attr.skipIfNotFound {
-				t.Logf("skipped %s/%s", attr.ctrl, attr.file)
-				continue
-			}
-			t.Fatalf("failed to read %q: %v", path, err)
-		}
-		if got := strings.TrimSpace(string(out)); got != attr.want {
-			t.Errorf("arg: %q, cgroup attribute %s/%s, got: %q, want: %q", attr.arg, attr.ctrl, attr.file, got, attr.want)
-		}
-	}
-
-	// Check that sandbox is inside cgroup.
-	controllers := []string{
-		"blkio",
-		"cpu",
-		"cpuset",
-		"memory",
-		"net_cls",
-		"net_prio",
-		"devices",
-		"freezer",
-		"perf_event",
-		"pids",
-		"systemd",
-	}
-	pid, err := d.SandboxPid()
-	if err != nil {
-		t.Fatalf("SandboxPid: %v", err)
-	}
-	for _, ctrl := range controllers {
-		path := filepath.Join("/sys/fs/cgroup", ctrl, "docker", gid, "cgroup.procs")
-		if err := verifyPid(pid, path); err != nil {
-			t.Errorf("cgroup control %q processes: %v", ctrl, err)
-		}
-	}
-}
-
-func TestCgroupParent(t *testing.T) {
-	if err := testutil.Pull("alpine"); err != nil {
-		t.Fatal("docker pull failed:", err)
-	}
-	d := testutil.MakeDocker("cgroup-test")
-
-	parent := testutil.RandomName("runsc")
-	if err := d.Run("--cgroup-parent", parent, "alpine", "sleep", "10000"); err != nil {
-		t.Fatal("docker create failed:", err)
-	}
-	defer d.CleanUp()
-	gid, err := d.ID()
-	if err != nil {
-		t.Fatalf("Docker.ID() failed: %v", err)
-	}
-	t.Logf("cgroup ID: %s", gid)
-
-	// Check that sandbox is inside cgroup.
-	pid, err := d.SandboxPid()
-	if err != nil {
-		t.Fatalf("SandboxPid: %v", err)
-	}
-
-	// Finds cgroup for the sandbox's parent process to check that cgroup is
-	// created in the right location relative to the parent.
-	cmd := fmt.Sprintf("grep PPid: /proc/%d/status | sed 's/PPid:\\s//'", pid)
-	ppid, err := exec.Command("bash", "-c", cmd).CombinedOutput()
-	if err != nil {
-		t.Fatalf("Executing %q: %v", cmd, err)
-	}
-	cgroups, err := cgroup.LoadPaths(strings.TrimSpace(string(ppid)))
-	if err != nil {
-		t.Fatalf("cgroup.LoadPath(%s): %v", ppid, err)
-	}
-	path := filepath.Join("/sys/fs/cgroup/memory", cgroups["memory"], parent, gid, "cgroup.procs")
-	if err := verifyPid(pid, path); err != nil {
-		t.Errorf("cgroup control %q processes: %v", "memory", err)
-	}
-}