}

var encodeTests = []encodeTest{
	{[]rune{1, 2, 3, 4}, []uint16{1, 2, 3, 4}},
	{[]rune{0xffff, 0x10000, 0x10001, 0x12345, 0x10ffff},
		[]uint16{0xffff, 0xd800, 0xdc00, 0xd800, 0xdc01, 0xd808, 0xdf45, 0xdbff, 0xdfff}},
	{[]rune{'a', 'b', 0xd7ff, 0xd800, 0xdfff, 0xe000, 0x110000, -1},
		[]uint16{'a', 'b', 0xd7ff, 0xfffd, 0xfffd, 0xe000, 0xfffd, 0xfffd}},
}

func TestEncode(t *testing.T) {
	for _, tt := range encodeTests {

// Test range over strings.

package main

import (
	"fmt"
	"os"
	"unicode/utf8"
)

func main() {
	s := "\000\123\x00\xca\xFE\u0123\ubabe\U0000babe\U0010FFFFx"
	expect := []rune{0, 0123, 0, 0xFFFD, 0xFFFD, 0x123, 0xbabe, 0xbabe, 0x10FFFF, 'x'}
	offset := 0
	var i int
	var c rune
	ok := true
	cnum := 0
	for i, c = range s {
		r, size := utf8.DecodeRuneInString(s[i:len(s)]) // check it another way

      }
    }

    // Test that 0xFFFE and 0xFFFF are replaced with 0xFFFD
    assertEscaping(xmlEscaper, "\uFFFD", '\uFFFE');
    assertEscaping(xmlEscaper, "\uFFFD", '\uFFFF');

    assertEquals(
        "0xFFFE is forbidden and should be replaced during escaping",
        "[\uFFFD]",
        xmlEscaper.escape("[\ufffe]"));
    assertEquals(
        "0xFFFF is forbidden and should be replaced during escaping",

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

package main

func main() {
	nchar := 0
	a := []rune{'日', '本', '語', 0xFFFD}
	for _, char := range "日本語\xc0" {
		if nchar >= len(a) {
			println("BUG")
			break
		}
		if char != a[nchar] {
			println("expected", a[nchar], "got", char)
			println("BUG")
			break
		}
		nchar++

      }
    }

    // Test that 0xFFFE and 0xFFFF are replaced with 0xFFFD
    assertEscaping(xmlEscaper, "\uFFFD", '\uFFFE');
    assertEscaping(xmlEscaper, "\uFFFD", '\uFFFF');

    assertEquals(
        "0xFFFE is forbidden and should be replaced during escaping",
        "[\uFFFD]",
        xmlEscaper.escape("[\ufffe]"));
    assertEquals(
        "0xFFFF is forbidden and should be replaced during escaping",

        (0x20 - 1)     | _
        (0xd7ff + 1)   | _
        (0xe000 - 1)   | _
        (0xfffd + 1)   | _
        (0x10000 - 1)  | _
        (0x10ffff + 1) | _
    }

    def "identifies legal character"() {
        expect:
        //	Char	   ::=   	#x9 | #xA | #xD | [#x20-#xD7FF] | [#xE000-#xFFFD] | [#x10000-#x10FFFF]
        //	/* any Unicode character, excluding the surrogate blocks, FFFE, and FFFF. */

   * element content or {@link #xmlAttributeEscaper} in attribute values.
   *
   * <p>This escaper substitutes {@code 0xFFFD} for non-whitespace control characters and the
   * character values {@code 0xFFFE} and {@code 0xFFFF} which are not permitted in XML. For more
   * detail see section <a href="http://www.w3.org/TR/2008/REC-xml-20081126/#charsets">2.2</a> of
   * the XML specification.
   *

   * element content or {@link #xmlAttributeEscaper} in attribute values.
   *
   * <p>This escaper substitutes {@code 0xFFFD} for non-whitespace control characters and the
   * character values {@code 0xFFFE} and {@code 0xFFFF} which are not permitted in XML. For more
   * detail see section <a href="http://www.w3.org/TR/2008/REC-xml-20081126/#charsets">2.2</a> of
   * the XML specification.
   *

        } else if (c < 0x20) {
            return false;
        } else if (c <= 0xD7FF) {
            return true;
        } else if (c < 0xE000) {
            return false;
        } else if (c <= 0xFFFD) {
            return true;
        } else if (c < 0x10000) {
            return false;
        } else if (c <= 0x10FFFF) {
            return true;
        }
        return false;
    }

        char c;
        for (int i = 0; i < in.length(); i++) {
            c = in.charAt(i);
            if (c == 0x9 || c == 0xA || c == 0xD || c >= 0x20 && c <= 0xD7FF || c >= 0xE000 && c <= 0xFFFD
                    || c >= 0x10000 && c <= 0x10FFFF) {
                buf.append(c);
            }
        }
        return buf.toString().trim();
    }