package net

import (
	"bytes"
	"runtime"
	"testing"
	"time"
)

func TestRawConnReadWrite(t *testing.T) {
	switch runtime.GOOS {
	case "plan9", "js", "wasip1":
		t.Skipf("not supported on %s", runtime.GOOS)
	}

	t.Run("TCP", func(t *testing.T) {
		handler := func(ls *localServer, ln Listener) {
			c, err := ln.Accept()
			if err != nil {
				t.Error(err)
				return
			}

	cxx, err := exec.Command("go", "env", "CXX").CombinedOutput()
	if err != nil {
		t.Fatalf("go env CXX failed: %s", err)
	}
	args, err := quoted.Split(string(cxx))
	if err != nil {
		t.Skipf("could not parse 'go env CXX' output %q: %s", string(cxx), err)
	}
	if len(args) == 0 {
		t.Skip("no C++ compiler")
	}
	testenv.MustHaveExecPath(t, string(args[0]))
}

var (
	swigOnce sync.Once

	{"unix", "/path/to/somewhere"},
	{"unixgram", "/path/to/somewhere"},
	{"unixpacket", "/path/to/somewhere"},
}

func TestDialError(t *testing.T) {
	switch runtime.GOOS {
	case "plan9":
		t.Skipf("%s does not have full support of socktest", runtime.GOOS)
	}

	origTestHookLookupIP := testHookLookupIP
	defer func() { testHookLookupIP = origTestHookLookupIP }()

import "C"
import "testing"

func testPPC64CallStubs(t *testing.T) {
	// Verify the trampolines run on the testing machine. If they
	// do not, or are missing, a crash is expected.
	if C.TestPPC64Stubs() != 0 {
		t.Skipf("This test requires binutils 2.35 or newer.")
	}

	}
	if id != buildID {
		t.Fatalf("buildID in hello binary = %q, want %q", id, buildID)
	}

	switch {
	case !testenv.HasCGO():
		t.Skipf("skipping - no cgo, so assuming external linking not available")
	case runtime.GOOS == "plan9":
		t.Skipf("skipping - external linking not supported")
	}

	tg.run("build", "-ldflags", "-buildid="+buildID+" -linkmode=external", "-o", tg.path("hello2.exe"), tg.path("hello.go"))

	"testing"
)

// Set to true for debugging (linux only).
const fixedTestDir = false

func TestCoverageApis(t *testing.T) {
	if testing.Short() {
		t.Skipf("skipping test: too long for short mode")
	}
	if !goexperiment.CoverageRedesign {
		t.Skipf("skipping new coverage tests (experiment not enabled)")
	}
	testenv.MustHaveGoBuild(t)
	dir := t.TempDir()
	if fixedTestDir {
		dir = "/tmp/qqqzzz"
		os.RemoveAll(dir)

	// layers.
	a200 := strings.Repeat("a", 200)
	dirname := filepath.Join(t.TempDir(), a200, a200)

	err := os.MkdirAll(dirname, 0o700)
	if err != nil {
		t.Skipf("MkdirAll failed: %v", err)
	}
	err = os.Chdir(dirname)
	if err != nil {
		t.Skipf("Chdir failed: %v", err)
	}
	// Change out of the temporary directory so that we don't inhibit its
	// removal during test cleanup.
	defer os.Chdir(`\`)

	// TODO when the dust clears, figure out what this should actually test.
	t.Skipf("reflect and reflectlite are out of sync for now")
	reflectDir := filepath.Join(runtime.GOROOT(), "src", "reflect")
	if _, err := os.Stat(reflectDir); os.IsNotExist(err) {
		// On some mobile builders, the test binary executes on a machine without a
		// complete GOROOT source tree.
		t.Skipf("GOROOT source not present")
	}

	var wg sync.WaitGroup

	Failed() bool
	Fatal(args ...any)
	Fatalf(format string, args ...any)
	Helper()
	Log(args ...any)
	Logf(format string, args ...any)
	Name() string
	Setenv(key, value string)
	Skip(args ...any)
	SkipNow()
	Skipf(format string, args ...any)
	Skipped() bool
	TempDir() string
}

var FmtSprintf func(format string, a ...any) string

	if testing.Short() {
		t.Skip("skipping in short mode")
	}

	if runtime.GOOS == "darwin" || runtime.GOOS == "ios" {
		t.Skipf("skipping flaky test on %s; see golang.org/issue/18202", runtime.GOOS)
	}

	if runtime.GOARCH == "mips" || runtime.GOARCH == "mips64" {
		t.Skipf("skipping on %s", runtime.GOARCH)
	}

	attempts := 1000
	threads := 4

	// Restrict the number of attempts based on RLIMIT_NPROC.