}
	}
}

// Test that the rune splitter returns same sequence of runes (not bytes) as for range string.
func TestScanRune(t *testing.T) {
	for n, test := range scanTests {
		buf := strings.NewReader(test)
		s := NewScanner(buf)
		s.Split(ScanRunes)
		var i, runeCount int
		var expect rune
		// Use a string range loop to validate the sequence of runes.
		for i, expect = range test {
			if !s.Scan() {

	b.lastRuneSize = -1
	return nil
}

// ReadRune reads a single UTF-8 encoded Unicode character and returns the
// rune and its size in bytes. If the encoded rune is invalid, it consumes one byte
// and returns unicode.ReplacementChar (U+FFFD) with a size of 1.
func (b *Reader) ReadRune() (r rune, size int, err error) {
	for b.r+utf8.UTFMax > b.w && !utf8.FullRune(b.buf[b.r:b.w]) && b.err == nil && b.w-b.r < len(b.buf) {

		}
	})
	if n > 0 {
		t.Errorf("allocations occurred while appending")
	}
}

func TestRuneIO(t *testing.T) {
	const NRune = 1000
	// Built a test slice while we write the data
	b := make([]byte, utf8.UTFMax*NRune)
	var buf Buffer
	n := 0
	for r := rune(0); r < NRune; r++ {
		size := utf8.EncodeRune(b[n:], r)
		nbytes, err := buf.WriteRune(r)
		if err != nil {
			t.Fatalf("WriteRune(%U) error: %s", r, err)

			if (len(args) == 1) != (configDumpFile == "") {
				cmd.Println(cmd.UsageString())
				return fmt.Errorf("cluster requires pod name or --file parameter")
			}
			return nil
		},
		RunE: func(c *cobra.Command, args []string) error {
			kubeClient, err := ctx.CLIClient()
			if err != nil {
				return err
			}
			var configWriter *configdump.ConfigWriter
			if len(args) == 1 {

import (
	"testing"
)

func TestNewRequestID(t *testing.T) {
	// Ensure that it returns an alphanumeric result of length 16.
	id := mustGetRequestID(UTCNow())

	if len(id) != 16 {
		t.Fail()
	}

	var e rune
	for _, char := range id {
		e = char

		// Ensure that it is alphanumeric, in this case, between 0-9 and A-Z.
		if !(('0' <= e && e <= '9') || ('A' <= e && e <= 'Z')) {
			t.Fail()
		}
	}

		if res != tc.resultExpected || ok != tc.matchExpected {
			t.Errorf("Matcher Case %d failed", i)
		}
	}

	evalCases := []struct {
		iText, iPat   string
		iEsc          rune
		matchExpected bool
		errExpected   error
	}{
		{"abcd", "abc", runeZero, false, nil},
		{"abcd", "abcd", runeZero, true, nil},
		{"abcd", "abc_", runeZero, true, nil},
		{"abcd", "_bdd", runeZero, false, nil},

				return fmt.Errorf("at least one of the --revision or --purge flags must be set")
			}
			if len(args) > 0 {
				return fmt.Errorf("istioctl operator remove does not take arguments")
			}
			return nil
		},
		RunE: func(cmd *cobra.Command, args []string) error {
			client, err := ctx.CLIClient()
			if err != nil {
				return err
			}
			l := clog.NewConsoleLogger(cmd.OutOrStdout(), cmd.OutOrStderr(), installerScope)

			return nil, err2
		}

		inferTypeAsString(escapeVal)

		escapeStr, ok := escapeVal.ToString()
		if !ok {
			err := errLikeNonStrArg
			return nil, errLikeInvalidInputs(err)
		}

		if len([]rune(escapeStr)) > 1 {
			err := errLikeInvalidEscape
			return nil, errLikeInvalidInputs(err)
		}
	}

	matchResult, err := evalSQLLike(s, patternStr, escape)
	if err != nil {
		return nil, err
	}

	s, ok := v.ToString()
	if !ok {
		err := fmt.Errorf("%s/%s expects a string argument", sqlFnCharLength, sqlFnCharacterLength)
		return nil, errIncorrectSQLFunctionArgumentType(err)
	}
	return FromInt(int64(len([]rune(s)))), nil
}

func lowerCase(v *Value) (*Value, error) {
	inferTypeAsString(v)
	s, ok := v.ToString()
	if !ok {
		err := fmt.Errorf("%s expects a string argument", sqlFnLower)

			}
			if istiodReset && stackTraceLevel != "" {
				logCmd.Println(logCmd.UsageString())
				return fmt.Errorf("--stack-trace-level cannot be combined with --reset")
			}
			return nil
		},
		RunE: func(logCmd *cobra.Command, args []string) error {
			client, err := ctx.CLIClientWithRevision(opts.Revision)
			if err != nil {
				return fmt.Errorf("failed to create k8s client: %v", err)
			}