# File test/lexertest.rb, line 89
  def test_nextstring
    str1 = "str\""
    lex = JSON::Lexer.new(str1)
    assert(lex.nextstring('"') == "str", "string processing has problems")
    str2 = '\b\t\n\f\r"'
    lex = JSON::Lexer.new(str2)
    assert(lex.nextstring('"') == "\b\t\n\f\r", "escape sequence processing has bugs")
    # UTF8 conversion tests for escape sequences
    str3 = '\u1234"'
    lex = JSON::Lexer.new(str3)
    assert(lex.nextstring('"') == "\341\210\224", "Unicode escape sequence processing has bugs")
  end