tailscale/tstest/integration/integration.go
Christine Dodrill 14c1113d2b
tstest/integration/vms: copy locally built binaries (#2006)
Instead of pulling packages from pkgs.tailscale.com, we should use the
tailscale binaries that are local to this git commit. This exposes a bit
of the integration testing stack in order to copy the binaries
correctly.

This commit also bumps our version of github.com/pkg/sftp to the latest
commit.

If you run into trouble with yaml, be sure to check out the
commented-out alpine linux image complete with instructions on how to
use it.

Updates #1988

Signed-off-by: Christine Dodrill <xe@tailscale.com>
2021-05-31 11:35:01 -04:00

101 lines
2.7 KiB
Go

// Copyright (c) 2021 Tailscale Inc & AUTHORS All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package integration contains Tailscale integration tests.
//
// This package is considered internal and the public API is subject
// to change without notice.
package integration
import (
"os"
"os/exec"
"path"
"path/filepath"
"runtime"
"strings"
"sync"
"testing"
"time"
"tailscale.com/version"
)
// Binaries are the paths to a tailscaled and tailscale binary.
// These can be shared by multiple nodes.
type Binaries struct {
Dir string // temp dir for tailscale & tailscaled
Daemon string // tailscaled
CLI string // tailscale
}
// BuildTestBinaries builds tailscale and tailscaled, failing the test
// if they fail to compile.
func BuildTestBinaries(t testing.TB) *Binaries {
td := t.TempDir()
build(t, td, "tailscale.com/cmd/tailscaled", "tailscale.com/cmd/tailscale")
return &Binaries{
Dir: td,
Daemon: filepath.Join(td, "tailscaled"+exe()),
CLI: filepath.Join(td, "tailscale"+exe()),
}
}
// buildMu limits our use of "go build" to one at a time, so we don't
// fight Go's built-in caching trying to do the same build concurrently.
var buildMu sync.Mutex
func build(t testing.TB, outDir string, targets ...string) {
buildMu.Lock()
defer buildMu.Unlock()
t0 := time.Now()
defer func() { t.Logf("built %s in %v", targets, time.Since(t0).Round(time.Millisecond)) }()
goBin := findGo(t)
cmd := exec.Command(goBin, "install")
if version.IsRace() {
cmd.Args = append(cmd.Args, "-race")
}
cmd.Args = append(cmd.Args, targets...)
cmd.Env = append(os.Environ(), "GOARCH="+runtime.GOARCH, "GOBIN="+outDir)
errOut, err := cmd.CombinedOutput()
if err == nil {
return
}
if strings.Contains(string(errOut), "when GOBIN is set") {
// Fallback slow path for cross-compiled binaries.
for _, target := range targets {
outFile := filepath.Join(outDir, path.Base(target)+exe())
cmd := exec.Command(goBin, "build", "-o", outFile, target)
cmd.Env = append(os.Environ(), "GOARCH="+runtime.GOARCH)
if errOut, err := cmd.CombinedOutput(); err != nil {
t.Fatalf("failed to build %v with %v: %v, %s", target, goBin, err, errOut)
}
}
return
}
t.Fatalf("failed to build %v with %v: %v, %s", targets, goBin, err, errOut)
}
func findGo(t testing.TB) string {
goBin := filepath.Join(runtime.GOROOT(), "bin", "go"+exe())
if fi, err := os.Stat(goBin); err != nil {
if os.IsNotExist(err) {
t.Fatalf("failed to find go at %v", goBin)
}
t.Fatalf("looking for go binary: %v", err)
} else if !fi.Mode().IsRegular() {
t.Fatalf("%v is unexpected %v", goBin, fi.Mode())
}
return goBin
}
func exe() string {
if runtime.GOOS == "windows" {
return ".exe"
}
return ""
}