// Copyright (c) Tailscale Inc & AUTHORS // SPDX-License-Identifier: BSD-3-Clause //go:build linux && amd64 && !race package archtest import ( "bytes" "fmt" "os" "os/exec" "strings" "testing" "tailscale.com/util/cibuild" ) func TestInQemu(t *testing.T) { t.Parallel() type Arch struct { Goarch string // GOARCH value Qarch string // qemu name } arches := []Arch{ {"arm", "arm"}, {"arm64", "aarch64"}, {"mips", "mips"}, {"mipsle", "mipsel"}, {"mips64", "mips64"}, {"mips64le", "mips64el"}, {"386", "386"}, } inCI := cibuild.On() for _, arch := range arches { arch := arch t.Run(arch.Goarch, func(t *testing.T) { t.Parallel() qemuUser := "qemu-" + arch.Qarch execVia := qemuUser if arch.Goarch == "386" { execVia = "" // amd64 can run it fine } else { look, err := exec.LookPath(qemuUser) if err != nil { if inCI { t.Fatalf("in CI and qemu not available: %v", err) } t.Skipf("%s not found; skipping test. error was: %v", qemuUser, err) } t.Logf("using %v", look) } cmd := exec.Command("go", "test", "--exec="+execVia, "-v", "tailscale.com/tstest/archtest", ) cmd.Env = append(os.Environ(), "GOARCH="+arch.Goarch) out, err := cmd.CombinedOutput() if err != nil { if strings.Contains(string(out), "fatal error: sigaction failed") && !inCI { t.Skip("skipping; qemu too old. use 5.x.") } t.Errorf("failed: %s", out) } sub := fmt.Sprintf("I am linux/%s", arch.Goarch) if !bytes.Contains(out, []byte(sub)) { t.Errorf("output didn't contain %q: %s", sub, out) } }) } }