"internal/platform"
	"os"
	"os/exec"
	"path/filepath"
	"runtime"
	"strconv"
	"strings"
	"sync"
	"testing"
)

// Save the original environment during init for use in checks. A test
// binary may modify its environment before calling HasExec to change its
// behavior (such as mimicking a command-line tool), and that modified
// environment might cause environment checks to behave erratically.
var origEnv = os.Environ()

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Distpack creates the tgz and zip files for a Go distribution.
// It writes into GOROOT/pkg/distpack:
//
//   - a binary distribution (tgz or zip) for the current GOOS and GOARCH
//   - a source distribution that is independent of GOOS/GOARCH
//   - the module mod, info, and zip files for a distribution in module form

	// to be code signed correctly.
	//
	// Apple's codesign_allocate (a helper utility for
	// the codesign utility) can do this fine itself if
	// it is run on a dynamic Mach-O binary. However,
	// when it is run on a pure (non-cgo) Go binary, where
	// the linkedit section is mostly empty, it fails to
	// account for the extra padding that it itself adds
	// when adding the LC_CODE_SIGNATURE load command

The GOMEMLIMIT variable sets a soft memory limit for the runtime. This memory limit
includes the Go heap and all other memory managed by the runtime, and excludes
external memory sources such as mappings of the binary itself, memory managed in
other languages, and memory held by the operating system on behalf of the Go
program. GOMEMLIMIT is a numeric value in bytes with an optional unit suffix.

            is KtVariableDeclaration ->
                parent.initializer == child

            // Binary expressions always use both operands.
            is KtBinaryExpression ->
                parent.left == child || parent.right == child

            // Binary expressions with type RHS always use its operand.
            is KtBinaryExpressionWithTypeRHS ->
                parent.left == child

}

type buildexe struct {
	once sync.Once
	exe  string
	err  error
}

func runTestProg(t *testing.T, binary, name string, env ...string) string {
	if *flagQuick {
		t.Skip("-quick")
	}

	testenv.MustHaveGoBuild(t)
	t.Helper()

	exe, err := buildTestProg(t, binary)
	if err != nil {
		t.Fatal(err)
	}

	return runBuiltTestProg(t, exe, name, env...)
}

# Istio CNI Node Agent

The Istio CNI Node Agent is responsible for several things

- Install an Istio CNI plugin binary on each node's filesystem, updating that node's CNI config in e.g (`/etc/cni/net.d`), and watching the config and binary paths to reinstall if things are modified.

	numBytes, err := base64.StdEncoding.Decode(mysteryBinaryBytes, []byte(encodedMysteryBinary))
	if err != nil {
		t.Fatalf("Unexpected error decoding binary payload: %v", err)
	}

	if numBytes != 125 {
		t.Fatalf("Unexpected decoded binary size: expected 125, got %v", numBytes)
	}

	cases := []struct {
		name    string
		payload map[string]FileProjection
		success bool
	}{
		{

	}
	// Read header
	switch binary.LittleEndian.Uint16(data[0:2]) {
	case poolMetaFormat:
	default:
		return fmt.Errorf("poolMeta: unknown format: %d", binary.LittleEndian.Uint16(data[0:2]))
	}
	switch binary.LittleEndian.Uint16(data[2:4]) {
	case poolMetaVersion:
	default:
		return fmt.Errorf("poolMeta: unknown version: %d", binary.LittleEndian.Uint16(data[2:4]))
	}

	// OK, parse data.

		var prev uint64
		for {
			if _, err := io.ReadFull(c, buf); err != nil {
				if err == io.EOF {
					break
				}
				t.Errorf("unexpected Read error: %v", err)
			}

			v := binary.LittleEndian.Uint64(buf)
			binary.LittleEndian.PutUint64(buf, v+1)
			if prev != 0 && prev+2 != v {
				t.Errorf("mismatching value: got %d, want %d", v, prev+2)
			}
			prev = v
			if v == 1000 {
				break
			}