Adding upstream version 4.2.2.upstream/4.2.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 899 insertions, 0 deletions

diff --git a/test/lua/add_packet_field.lua b/test/lua/add_packet_field.lua
new file mode 100644
index 00000000..d1a2a6c9
--- /dev/null
+++ b/test/lua/add_packet_field.lua
@@ -0,0 +1,899 @@
+--[[
+    The tree:add_packet_field() method returns a value and offset in addition to a tree item.
+    This file tests whether the value and offset are correct. As for the value,
+    its correctness is tested in several ways for a given input.
+
+    1. The returned value should match a precomputed value
+
+    2. The returned value should match the value obtained from a Field object
+        right after tree:add_packet_field() is called
+
+    3. The returned value should match the value obtained from a Field object
+        right after tree:add() is called with the same input as tree:add_packet_field()
+
+    4. The returned value should match the value obtained from the corresponding value function
+        called on the input tvbrange
+
+    There are some incompatibilties and limitations due to handling of encodings.
+    Incompatibilities are noted with the text INCOMPATIBILITY in a nearby comment.
+]]
+
+local field_setup = require "field_setup"
+
+--[[
+    This dissector expects a capture with at least one packet on UDP 65333.
+    All the actual test data is synthetic.
+]]--
+local myproto = Proto("test", "Test")
+
+field_data = field_setup(myproto, "test")
+
+function hexlify_string(s)
+    local sep = ""
+    local hx = ""
+    for i=1,#s do
+        hx = hx .. sep .. string.format("%02x", s:byte(i))
+        sep = " "
+    end
+    return hx
+end
+
+--[[
+    Ensure the value is represented in a way that shows up when printed.
+    It is assumed the string representation is relatively short.
+
+    The test suite will report an error if we print invalid utf8 for any reason.
+    We work around this by passing a substitution string used when the real
+    string has invalid utf8. We also print the output bytes in hex after the string,
+    and those bytes are always faithful to the real output.
+]]--
+function format_value_for_print(v, substitution)
+    local t = type(v)
+    local s
+    if t == "string" then
+        local hx = hexlify_string(v)
+        if substitution ~= nil then
+            s = string.format("(invalid utf8) \"%s\" [%s]", substitution, hx)
+        else
+            s = string.format("\"%s\" [%s]", v, hx)
+        end
+
+    else
+        s = tostring(v)
+    end
+    return string.format("(%s) %s", type(v), s)
+end
+
+function format_encoding_for_print(enc)
+
+    local char_enc = "ASCII"
+    if bit.band(enc, ENC_UTF_16) ~= 0 then
+        char_enc = "UTF-16"
+    end
+
+    local enc_enc = "BE"
+    if bit.band(enc, ENC_LITTLE_ENDIAN) ~= 0 then
+        end_enc = "LE"
+    end
+
+    if enc == ENC_ISO_8601_DATE_TIME then
+        char_enc = "ISO_8601"
+        end_enc = "-"
+    end
+
+    return string.format("%s %s", char_enc, end_enc)
+end
+
+function print_test_data(test_data)
+    print(string.format("TEST: using field type: %s", test_data.field_type))
+    if test_data.hexlify then
+        print(string.format("TEST: input was hexlified from: \"%s\"", test_data.original_input))
+    end
+    print(string.format("TEST: using data: [%s]", test_data.input))
+    print(string.format("TEST: using offset: %d", test_data.input_offset))
+    print(string.format("TEST: using encoding: %s", format_encoding_for_print(test_data.encoding)))
+    print()
+end
+
+function general_equality_test(a, b)
+    return a == b
+end
+
+--equal or both nan
+function float_equality_test(a, b)
+    return a == b or (a ~= a and b ~= b)
+end
+
+function recent_field_value(t)
+    local values = {field_data[t].value_field()}
+    return values[#values].value
+end
+
+function add_packet_field_returns_precomputed_value(test_data)
+
+    print(string.format("  EXPECT: precomputed return value: %s", format_value_for_print(test_data.expect_precomputed)))
+    print(string.format("  OUTPUT: add_packet_field returned value: %s", format_value_for_print(test_data.returned_value)))
+
+    if test_data.equality_function(test_data.returned_value, test_data.expect_precomputed) then
+        print("  PASS: the return value is correct")
+        print()
+        return true
+    end
+
+    print("  FAIL: the returned value is incorrect")
+    print()
+    return false
+end
+
+function add_packet_field_then_value_field_returns_expected_value(test_data)
+
+    print(string.format("  EXPECT: value field value %s", format_value_for_print(test_data.expect_add_pf_field_value)))
+    print(string.format("  OUTPUT: value field after tree:add_packet_field() returned: %s",
+        format_value_for_print(test_data.returned_add_pf_field_value)))
+
+    local incompatible = test_data.expect_add_pf_field_value ~= test_data.expect_precomputed
+    if incompatible then
+        print("  WARNING: the value field does not return the same value as the other implementations")
+    end
+    if test_data.equality_function(test_data.returned_add_pf_field_value, test_data.expect_add_pf_field_value) then
+        print("  PASS: the value field is correct")
+        print()
+        return true
+    end
+
+    print("  FAIL: the value field is incorrect")
+    print()
+    return false
+end
+
+function tree_add_then_value_field_returns_expected_value(test_data)
+
+    if test_data.skip_tree_add_test then
+        print("  SKIP: " .. test_data.skip_tree_add_test_message)
+        print()
+        return true
+    end
+
+    print(string.format("  EXPECT: value field value %s", format_value_for_print(test_data.expect_add_field_value)))
+    print(string.format("  OUTPUT: value field after tree:add() returned: %s",
+        format_value_for_print(test_data.returned_add_field_value)))
+
+    local incompatible = test_data.expect_add_field_value ~= test_data.expect_precomputed
+    if incompatible then
+        print("  WARNING: the value field does not return the same value as the other implementations")
+    end
+    if test_data.equality_function(test_data.returned_add_field_value, test_data.expect_add_field_value) then
+        print("  PASS: the value field is correct")
+        print()
+        return true
+    end
+
+    print("  FAIL: the value field is incorrect")
+    print()
+    return false
+
+end
+
+--[[
+    The tvbrange:string() function can return invalid utf8 even when the input is valid.
+]]
+function tvbrange_returns_expected_value(test_data)
+
+    if test_data.tvbr_fn == nil then
+        print("  SKIP: no tvbrange function for this field type")
+        print()
+        return true
+    end
+
+    local tvbr_value, tvbr_fn_printable = test_data.tvbr_fn(test_data.input_tvbrange, test_data.encoding)
+    local pass = test_data.equality_function(tvbr_value, test_data.expect_tvbrange_value)
+    local incompatible = test_data.expect_tvbrange_value ~= test_data.expect_precomputed
+    local tvbr_value_printable = format_value_for_print(tvbr_value)
+    local expect_value_printable = format_value_for_print(test_data.expect_tvbrange_value, test_data.expect_tvbrange_value_printable)
+    if pass then
+        --if the outputs are equal, then the substitute is useable for both
+        tvbr_value_printable = format_value_for_print(tvbr_value, test_data.expect_tvbrange_value_printable)
+    end
+
+    print(string.format("  TEST: using tvbrange function %s", tvbr_fn_printable))
+    print(string.format("  EXPECT: tvbrange value %s", expect_value_printable))
+    print(string.format("  OUTPUT: tvbrange returned %s", tvbr_value_printable))
+    if incompatible then
+        print("  WARNING: the tvbr function is not compatible with the other implementations")
+    end
+
+    if pass then
+        print("  PASS: the the tvbr function works as expected")
+        print()
+        return true
+    end
+
+    print("  FAIL: the the tvbr function works as expected")
+    print()
+    return false
+end
+
+function add_packet_field_returns_correct_offset(test_data)
+
+    print(string.format("  EXPECT: offset %d", test_data.expect_offset))
+    print(string.format("  OUTPUT: add_packet_field returned offset %d", test_data.returned_offset))
+
+    if test_data.returned_offset == test_data.expect_offset then
+        print("  PASS: the returned offset is correct")
+        print()
+        return true
+    end
+
+    print("  FAIL: the returned offset is incorrect")
+    print()
+    return false
+end
+
+function add_packet_field_all_tests(tree, test_data)
+    print_test_data(test_data)
+    local ret = true
+        and add_packet_field_returns_precomputed_value(test_data)
+        and add_packet_field_then_value_field_returns_expected_value(test_data)
+        and tree_add_then_value_field_returns_expected_value(test_data)
+        and tvbrange_returns_expected_value(test_data)
+        and add_packet_field_returns_correct_offset(test_data)
+    return ret
+end
+
+function generate_test_data_for_case(tree, field_type, case, tvbr_fn, equality_function, use_offset)
+
+    local input = case.input
+    if case.hexlify then
+        input = hexlify_string(case.input)
+    end
+
+    local input_byte_length = string.len(input:gsub(" ", "")) / 2
+    local input_offset = 0
+    if use_offset then
+        input = "77 " .. input
+        input_offset = 1
+    end
+
+    local input_tvb = ByteArray.new(input):tvb()
+    local input_tvbrange
+
+    if case.fake_input_length == nil then
+        input_tvbrange = input_tvb(input_offset, input_byte_length)
+    else
+        input_tvbrange = input_tvb(input_offset, case.fake_input_length)
+    end
+
+    local t = field_data[field_type]
+    local add_pf_leaf, returned_value, returned_offset = tree:add_packet_field(t.packet_field, input_tvbrange, case.encoding)
+    local add_pf_field_value = recent_field_value(field_type)
+
+    local add_leaf = nil
+    local add_field_value = nil
+    local skip_tree_add_test_message = nil
+    local skip_tree_add_test = false
+
+    if case.encoding == ENC_ASCII + ENC_BIG_ENDIAN then
+        add_leaf = tree:add(t.packet_field, input_tvbrange)
+        add_field_value = recent_field_value(field_type)
+    elseif case.encoding == ENC_ASCII + ENC_LITTLE_ENDIAN then
+        add_leaf = tree:add_le(t.packet_field, input_tvbrange)
+        add_field_value = recent_field_value(field_type)
+    else
+        skip_tree_add_test = true
+        skip_tree_add_test_message = "tree:add() only uses ASCII encoding"
+    end
+
+    local expect_add_pf_field_value = case.output
+    if case.incompatible_add_pf_field then
+        expect_add_pf_field_value = case.expect_add_pf_field_value
+    end
+
+    local expect_add_field_value = case.output
+    if case.incompatible_add_field then
+        expect_add_field_value = case.expect_add_field_value
+    end
+
+    local expect_tvbrange_value = case.output
+    if case.incompatible_tvbrange then
+        expect_tvbrange_value = case.expect_tvbrange_value
+    end
+
+    local expect_offset = input_byte_length + input_offset
+    if case.variable_input_length then
+        expect_offset = case.input_length + input_offset
+    end
+
+    return {
+        field_type = field_type,
+        hexlify = case.hexlify,
+        original_input = case.input,
+        input = input,
+        input_offset = input_offset,
+        input_tvbrange = input_tvbrange,
+        encoding = case.encoding,
+
+        returned_value = returned_value,
+        returned_offset = returned_offset,
+        returned_add_pf_field_value = add_pf_field_value,
+        returned_add_field_value = add_field_value,
+
+        tvbr_fn = tvbr_fn,
+        equality_function = equality_function,
+        expect_precomputed = case.output,
+        expect_add_pf_field_value = expect_add_pf_field_value,
+
+        expect_add_field_value = expect_add_field_value,
+        skip_tree_add_test = skip_tree_add_test,
+        skip_tree_add_test_message = skip_tree_add_test_message,
+
+        expect_tvbrange_value = expect_tvbrange_value,
+        expect_tvbrange_value_printable = case.expect_tvbrange_value_printable,
+        expect_offset = expect_offset
+    }
+end
+
+function run_test_cases_all_tests(tree, field_type, test_cases, tvbr_fn, equality_function)
+    local test_data
+    for _ , case in ipairs(test_cases) do
+        test_data = generate_test_data_for_case(tree, field_type, case, tvbr_fn, equality_function, true)
+        if not add_packet_field_all_tests(tree, test_data) then
+            return false
+        end
+
+        test_data = generate_test_data_for_case(tree, field_type, case, tvbr_fn, equality_function, false)
+        if not add_packet_field_all_tests(tree, test_data) then
+            return false
+        end
+    end
+
+    return true
+end
+
+function simple_integer_tests(tree)
+    local uint8_test_cases = {
+        {input = "ff", encoding = ENC_LITTLE_ENDIAN, output = 0xff},
+        {input = "00", encoding = ENC_LITTLE_ENDIAN, output = 0x00},
+        {input = "ff", encoding = ENC_BIG_ENDIAN,    output = 0xff},
+        {input = "00", encoding = ENC_BIG_ENDIAN,    output = 0x00},
+    }
+
+    local uint16_test_cases = {
+        {input = "ff 00", encoding = ENC_LITTLE_ENDIAN, output = 0x00ff},
+        {input = "00 ff", encoding = ENC_LITTLE_ENDIAN, output = 0xff00},
+        {input = "ff 00", encoding = ENC_BIG_ENDIAN,    output = 0xff00},
+        {input = "00 ff", encoding = ENC_BIG_ENDIAN,    output = 0x00ff},
+    }
+
+    local uint24_test_cases = {
+        {input = "ff 00 00", encoding = ENC_LITTLE_ENDIAN, output = 0x0000ff},
+        {input = "00 ff 00", encoding = ENC_LITTLE_ENDIAN, output = 0x00ff00},
+        {input = "00 00 ff", encoding = ENC_LITTLE_ENDIAN, output = 0xff0000},
+        {input = "ff 00 00", encoding = ENC_BIG_ENDIAN,    output = 0xff0000},
+        {input = "00 ff 00", encoding = ENC_BIG_ENDIAN,    output = 0x00ff00},
+        {input = "00 00 ff", encoding = ENC_BIG_ENDIAN,    output = 0x0000ff},
+    }
+
+    local uint32_test_cases = {
+        {input = "ff 00 00 00", encoding = ENC_LITTLE_ENDIAN, output = 0x000000ff},
+        {input = "00 ff 00 00", encoding = ENC_LITTLE_ENDIAN, output = 0x0000ff00},
+        {input = "00 00 ff 00", encoding = ENC_LITTLE_ENDIAN, output = 0x00ff0000},
+        {input = "00 00 00 ff", encoding = ENC_LITTLE_ENDIAN, output = 0xff000000},
+        {input = "ff 00 00 00", encoding = ENC_BIG_ENDIAN,    output = 0xff000000},
+        {input = "00 ff 00 00", encoding = ENC_BIG_ENDIAN,    output = 0x00ff0000},
+        {input = "00 00 ff 00", encoding = ENC_BIG_ENDIAN,    output = 0x0000ff00},
+        {input = "00 00 00 ff", encoding = ENC_BIG_ENDIAN,    output = 0x000000ff},
+    }
+
+    function tvbr_uint (tvbr, encoding)
+        if encoding == ENC_LITTLE_ENDIAN then
+            return tvbr:le_uint(), "le_uint()"
+        else
+            return tvbr:uint(), "uint()"
+        end
+    end
+
+    local int8_test_cases = {
+        {input = "ff", encoding = ENC_LITTLE_ENDIAN, output = -0x01},
+        {input = "00", encoding = ENC_LITTLE_ENDIAN, output =  0x00},
+        {input = "ff", encoding = ENC_BIG_ENDIAN,    output = -0x01},
+        {input = "00", encoding = ENC_BIG_ENDIAN,    output =  0x00},
+    }
+
+    local int16_test_cases = {
+        {input = "ff 00", encoding = ENC_LITTLE_ENDIAN, output =  0x00ff},
+        {input = "00 ff", encoding = ENC_LITTLE_ENDIAN, output = -0x0100},
+        {input = "ff 00", encoding = ENC_BIG_ENDIAN,    output = -0x0100},
+        {input = "00 ff", encoding = ENC_BIG_ENDIAN,    output =  0x00ff},
+    }
+
+    local int24_test_cases = {
+        {input = "ff 00 00", encoding = ENC_LITTLE_ENDIAN, output =  0x0000ff},
+        {input = "00 ff 00", encoding = ENC_LITTLE_ENDIAN, output =  0x00ff00},
+        {input = "00 00 ff", encoding = ENC_LITTLE_ENDIAN, output = -0x010000},
+        {input = "ff 00 00", encoding = ENC_BIG_ENDIAN,    output = -0x010000},
+        {input = "00 ff 00", encoding = ENC_BIG_ENDIAN,    output =  0x00ff00},
+        {input = "00 00 ff", encoding = ENC_BIG_ENDIAN,    output =  0x0000ff},
+    }
+
+    local int32_test_cases = {
+        {input = "ff 00 00 00", encoding = ENC_LITTLE_ENDIAN, output =  0x000000ff},
+        {input = "00 ff 00 00", encoding = ENC_LITTLE_ENDIAN, output =  0x0000ff00},
+        {input = "00 00 ff 00", encoding = ENC_LITTLE_ENDIAN, output =  0x00ff0000},
+        {input = "00 00 00 ff", encoding = ENC_LITTLE_ENDIAN, output = -0x01000000},
+        {input = "ff 00 00 00", encoding = ENC_BIG_ENDIAN,    output = -0x01000000},
+        {input = "00 ff 00 00", encoding = ENC_BIG_ENDIAN,    output =  0x00ff0000},
+        {input = "00 00 ff 00", encoding = ENC_BIG_ENDIAN,    output =  0x0000ff00},
+        {input = "00 00 00 ff", encoding = ENC_BIG_ENDIAN,    output =  0x000000ff},
+    }
+
+    function tvbr_int(tvbr, encoding)
+        if encoding == ENC_LITTLE_ENDIAN then
+            return tvbr:le_int(), "le_int()"
+        else
+            return tvbr:int(), "int()"
+        end
+    end
+
+    return true
+        and run_test_cases_all_tests(tree, "uint8",  uint8_test_cases,  tvbr_uint, general_equality_test)
+        and run_test_cases_all_tests(tree, "uint16", uint16_test_cases, tvbr_uint, general_equality_test)
+        and run_test_cases_all_tests(tree, "uint24", uint24_test_cases, tvbr_uint, general_equality_test)
+        and run_test_cases_all_tests(tree, "uint32", uint32_test_cases, tvbr_uint, general_equality_test)
+
+        and run_test_cases_all_tests(tree, "int8",  int8_test_cases,  tvbr_int, general_equality_test)
+        and run_test_cases_all_tests(tree, "int16", int16_test_cases, tvbr_int, general_equality_test)
+        and run_test_cases_all_tests(tree, "int24", int24_test_cases, tvbr_int, general_equality_test)
+        and run_test_cases_all_tests(tree, "int32", int32_test_cases, tvbr_int, general_equality_test)
+end
+
+function integer64_tests(tree)
+
+    local uint64_test_cases = {
+        {input = "ff 00 00 00 00 00 00 00", encoding = ENC_LITTLE_ENDIAN, output = UInt64(0x000000ff, 0x00000000)},
+        {input = "00 ff 00 00 00 00 00 00", encoding = ENC_LITTLE_ENDIAN, output = UInt64(0x0000ff00, 0x00000000)},
+        {input = "00 00 ff 00 00 00 00 00", encoding = ENC_LITTLE_ENDIAN, output = UInt64(0x00ff0000, 0x00000000)},
+        {input = "00 00 00 ff 00 00 00 00", encoding = ENC_LITTLE_ENDIAN, output = UInt64(0xff000000, 0x00000000)},
+        {input = "00 00 00 00 ff 00 00 00", encoding = ENC_LITTLE_ENDIAN, output = UInt64(0x00000000, 0x000000ff)},
+        {input = "00 00 00 00 00 ff 00 00", encoding = ENC_LITTLE_ENDIAN, output = UInt64(0x00000000, 0x0000ff00)},
+        {input = "00 00 00 00 00 00 ff 00", encoding = ENC_LITTLE_ENDIAN, output = UInt64(0x00000000, 0x00ff0000)},
+        {input = "00 00 00 00 00 00 00 ff", encoding = ENC_LITTLE_ENDIAN, output = UInt64(0x00000000, 0xff000000)},
+        {input = "ff 00 00 00 00 00 00 00", encoding = ENC_BIG_ENDIAN,    output = UInt64(0x00000000, 0xff000000)},
+        {input = "00 ff 00 00 00 00 00 00", encoding = ENC_BIG_ENDIAN,    output = UInt64(0x00000000, 0x00ff0000)},
+        {input = "00 00 ff 00 00 00 00 00", encoding = ENC_BIG_ENDIAN,    output = UInt64(0x00000000, 0x0000ff00)},
+        {input = "00 00 00 ff 00 00 00 00", encoding = ENC_BIG_ENDIAN,    output = UInt64(0x00000000, 0x000000ff)},
+        {input = "00 00 00 00 ff 00 00 00", encoding = ENC_BIG_ENDIAN,    output = UInt64(0xff000000, 0x00000000)},
+        {input = "00 00 00 00 00 ff 00 00", encoding = ENC_BIG_ENDIAN,    output = UInt64(0x00ff0000, 0x00000000)},
+        {input = "00 00 00 00 00 00 ff 00", encoding = ENC_BIG_ENDIAN,    output = UInt64(0x0000ff00, 0x00000000)},
+        {input = "00 00 00 00 00 00 00 ff", encoding = ENC_BIG_ENDIAN,    output = UInt64(0x000000ff, 0x00000000)},
+    }
+
+    function tvbr_uint(tvbr, encoding)
+        if encoding == ENC_LITTLE_ENDIAN then
+            return tvbr:le_uint64(), "le_uint64()"
+        else
+            return tvbr:uint64(), "uint64()"
+        end
+    end
+
+    local int64_test_cases = {
+        {input = "ff 00 00 00 00 00 00 00", encoding = ENC_LITTLE_ENDIAN, output = Int64(0x000000ff, 0x00000000)},
+        {input = "00 ff 00 00 00 00 00 00", encoding = ENC_LITTLE_ENDIAN, output = Int64(0x0000ff00, 0x00000000)},
+        {input = "00 00 ff 00 00 00 00 00", encoding = ENC_LITTLE_ENDIAN, output = Int64(0x00ff0000, 0x00000000)},
+        {input = "00 00 00 ff 00 00 00 00", encoding = ENC_LITTLE_ENDIAN, output = Int64(0xff000000, 0x00000000)},
+        {input = "00 00 00 00 ff 00 00 00", encoding = ENC_LITTLE_ENDIAN, output = Int64(0x00000000, 0x000000ff)},
+        {input = "00 00 00 00 00 ff 00 00", encoding = ENC_LITTLE_ENDIAN, output = Int64(0x00000000, 0x0000ff00)},
+        {input = "00 00 00 00 00 00 ff 00", encoding = ENC_LITTLE_ENDIAN, output = Int64(0x00000000, 0x00ff0000)},
+        {input = "00 00 00 00 00 00 00 ff", encoding = ENC_LITTLE_ENDIAN, output = Int64(0x00000000, 0xff000000)},
+        {input = "ff 00 00 00 00 00 00 00", encoding = ENC_BIG_ENDIAN,    output = Int64(0x00000000, 0xff000000)},
+        {input = "00 ff 00 00 00 00 00 00", encoding = ENC_BIG_ENDIAN,    output = Int64(0x00000000, 0x00ff0000)},
+        {input = "00 00 ff 00 00 00 00 00", encoding = ENC_BIG_ENDIAN,    output = Int64(0x00000000, 0x0000ff00)},
+        {input = "00 00 00 ff 00 00 00 00", encoding = ENC_BIG_ENDIAN,    output = Int64(0x00000000, 0x000000ff)},
+        {input = "00 00 00 00 ff 00 00 00", encoding = ENC_BIG_ENDIAN,    output = Int64(0xff000000, 0x00000000)},
+        {input = "00 00 00 00 00 ff 00 00", encoding = ENC_BIG_ENDIAN,    output = Int64(0x00ff0000, 0x00000000)},
+        {input = "00 00 00 00 00 00 ff 00", encoding = ENC_BIG_ENDIAN,    output = Int64(0x0000ff00, 0x00000000)},
+        {input = "00 00 00 00 00 00 00 ff", encoding = ENC_BIG_ENDIAN,    output = Int64(0x000000ff, 0x00000000)},
+    }
+
+    function tvbr_int(tvbr, encoding)
+        if encoding == ENC_LITTLE_ENDIAN then
+            return tvbr:le_int64(), "le_int64()"
+        else
+            return tvbr:int64(), "int64()"
+        end
+    end
+
+    return true
+        and run_test_cases_all_tests(tree, "uint64", uint64_test_cases, tvbr_uint, general_equality_test)
+        and run_test_cases_all_tests(tree, "int64",  int64_test_cases,  tvbr_int, general_equality_test)
+end
+
+function string_tests(tree)
+
+    local ABC_ascii =   "41 42 43"
+    local ABCzD_ascii = "41 42 43 00 44"
+
+    local SHARK_16_little =   "b5 30 e1 30"
+    local SHARKzSA_16_little = "b5 30 e1 30 00 00 b5 30"
+
+    local SHARK_16_big =   "30 b5 30 e1"
+    local SHARKzSA_16_big = "30 b5 30 e1 00 00 30 b5"
+
+    local string_test_cases = {
+        {input = ABC_ascii, encoding = ENC_ASCII, output = "ABC"},
+
+        {input = ABCzD_ascii, encoding = ENC_ASCII, output = "ABC"},
+
+        {input = SHARK_16_little, encoding = ENC_ASCII, output = "�0�0"},
+
+        {input = SHARK_16_little, encoding = ENC_UTF_16 + ENC_LITTLE_ENDIAN, output = "サメ"},
+
+        {input = SHARKzSA_16_little, encoding = ENC_UTF_16 + ENC_LITTLE_ENDIAN, output = "サメ"},
+
+        {input = SHARK_16_big, encoding = ENC_UTF_16 + ENC_BIG_ENDIAN, output = "サメ"},
+
+        {input = SHARKzSA_16_big, encoding = ENC_UTF_16 + ENC_BIG_ENDIAN, output = "サメ"},
+    }
+
+    function tvbr_string(tvbr, encoding)
+        return tvbr:string(encoding), string.format("string(%s)", format_encoding_for_print(encoding))
+    end
+
+    --[[
+        stringz computes its own input length by looking for null
+        the input length includes the null, which is 2 bytes for utf16
+    ]]--
+    local stringz_tests = {
+
+        {input = ABCzD_ascii, encoding = ENC_ASCII, output = "ABC",
+            variable_input_length = true, input_length = 4
+        },
+
+        {input = SHARKzSA_16_little, encoding = ENC_UTF_16 + ENC_LITTLE_ENDIAN, output = "サメ",
+            variable_input_length = true, input_length = 6,
+        },
+
+        {input = SHARKzSA_16_big, encoding = ENC_UTF_16 + ENC_BIG_ENDIAN, output = "サメ",
+            variable_input_length = true, input_length = 6,
+        },
+    }
+
+    function tvbr_stringz(tvbr, encoding)
+        return tvbr:stringz(encoding), string.format("stringz(%s)", format_encoding_for_print(encoding))
+    end
+
+    local ustring_tests = {
+        {input = SHARK_16_big, encoding = ENC_UTF_16 + ENC_BIG_ENDIAN, output = "サメ"},
+        {input = SHARKzSA_16_big, encoding = ENC_UTF_16 + ENC_BIG_ENDIAN, output = "サメ"},
+    }
+
+    function tvbr_ustring(tvbr, encoding)
+        return tvbr:ustring(), "ustring()"
+    end
+
+    local le_ustring_tests = {
+        {input = SHARK_16_little, encoding = ENC_UTF_16 + ENC_LITTLE_ENDIAN, output = "サメ"},
+        {input = SHARKzSA_16_little, encoding = ENC_UTF_16 + ENC_LITTLE_ENDIAN, output = "サメ"},
+    }
+
+    function tvbr_le_ustring(tvbr, encoding)
+        return tvbr:le_ustring(), "le_ustring()"
+    end
+
+    local ustringz_tests = {
+        {input = SHARKzSA_16_big, encoding = ENC_UTF_16 + ENC_BIG_ENDIAN, output = "サメ",
+            variable_input_length = true, input_length = 6
+        },
+    }
+
+    function tvbr_ustringz(tvbr, encoding)
+        return tvbr:ustringz(), "ustringz()"
+    end
+
+    local le_ustringz_tests = {
+        {input = SHARKzSA_16_little, encoding = ENC_UTF_16 + ENC_LITTLE_ENDIAN, output = "サメ",
+            variable_input_length = true, input_length = 6
+        },
+    }
+
+    function tvbr_le_ustringz(tvbr, encoding)
+        return tvbr:le_ustringz(), "le_ustringz()"
+    end
+
+    return true
+        and run_test_cases_all_tests(tree, "string",  string_test_cases,  tvbr_string,      general_equality_test)
+        and run_test_cases_all_tests(tree, "stringz", stringz_tests,      tvbr_stringz,     general_equality_test)
+        and run_test_cases_all_tests(tree, "string",  ustring_tests,      tvbr_ustring,     general_equality_test)
+        and run_test_cases_all_tests(tree, "string",  le_ustring_tests,   tvbr_le_ustring,  general_equality_test)
+        and run_test_cases_all_tests(tree, "stringz", ustringz_tests,     tvbr_ustringz,    general_equality_test)
+        and run_test_cases_all_tests(tree, "stringz", le_ustringz_tests,  tvbr_le_ustringz, general_equality_test)
+end
+
+function bool_char_tests(tree)
+
+    local bool_tests = {
+        {input = "ff", encoding = ENC_BIG_ENDIAN, output = true},
+        {input = "00", encoding = ENC_BIG_ENDIAN, output = false},
+        {input = "01", encoding = ENC_BIG_ENDIAN, output = true},
+        {input = "ff", encoding = ENC_LITTLE_ENDIAN, output = true},
+        {input = "00", encoding = ENC_LITTLE_ENDIAN, output = false},
+        {input = "01", encoding = ENC_LITTLE_ENDIAN, output = true},
+    }
+
+    local char_tests = {
+        {input = "ff", encoding = ENC_BIG_ENDIAN, output = 0xff},
+        {input = "00", encoding = ENC_BIG_ENDIAN, output = 0x00},
+        {input = "30", encoding = ENC_BIG_ENDIAN, output = 0x30},
+        {input = "ff", encoding = ENC_LITTLE_ENDIAN, output = 0xff},
+        {input = "00", encoding = ENC_LITTLE_ENDIAN, output = 0x00},
+        {input = "30", encoding = ENC_LITTLE_ENDIAN, output = 0x30},
+    }
+
+    return true
+        and run_test_cases_all_tests(tree, "boolean", bool_tests, nil, general_equality_test)
+        and run_test_cases_all_tests(tree, "char", char_tests, nil, general_equality_test)
+end
+
+function float_tests(tree)
+
+    local be_float = {
+        {input = "3c 00 00 00", encoding = ENC_BIG_ENDIAN, output =  0.0078125},
+        {input = "bd a0 00 00", encoding = ENC_BIG_ENDIAN, output = -0.078125},
+        {input = "3f 48 00 00", encoding = ENC_BIG_ENDIAN, output =  0.78125},
+        {input = "c0 fa 00 00", encoding = ENC_BIG_ENDIAN, output = -7.8125},
+        {input = "42 9c 40 00", encoding = ENC_BIG_ENDIAN, output =  78.125},
+        {input = "c4 43 50 00", encoding = ENC_BIG_ENDIAN, output = -781.25},
+        {input = "45 f4 24 00", encoding = ENC_BIG_ENDIAN, output =  7812.5},
+        {input = "c7 98 96 80", encoding = ENC_BIG_ENDIAN, output = -78125.0},
+        {input = "49 3e bc 20", encoding = ENC_BIG_ENDIAN, output =  781250.0},
+        {input = "ca ee 6b 28", encoding = ENC_BIG_ENDIAN, output = -7812500.0},
+        {input = "00 00 00 00", encoding = ENC_BIG_ENDIAN, output =  0.0},
+        {input = "80 00 00 00", encoding = ENC_BIG_ENDIAN, output = -0.0},
+        {input = "7f c0 00 00", encoding = ENC_BIG_ENDIAN, output =  0/0},
+        {input = "7f 80 00 00", encoding = ENC_BIG_ENDIAN, output =  1/0},
+        {input = "ff 80 00 00", encoding = ENC_BIG_ENDIAN, output = -1/0},
+    }
+
+    local le_float = {
+        {input = "00 00 00 3c", encoding = ENC_LITTLE_ENDIAN, output =  0.0078125},
+        {input = "00 00 a0 bd", encoding = ENC_LITTLE_ENDIAN, output = -0.078125},
+        {input = "00 00 48 3f", encoding = ENC_LITTLE_ENDIAN, output =  0.78125},
+        {input = "00 00 fa c0", encoding = ENC_LITTLE_ENDIAN, output = -7.8125},
+        {input = "00 40 9c 42", encoding = ENC_LITTLE_ENDIAN, output =  78.125},
+        {input = "00 50 43 c4", encoding = ENC_LITTLE_ENDIAN, output = -781.25},
+        {input = "00 24 f4 45", encoding = ENC_LITTLE_ENDIAN, output =  7812.5},
+        {input = "80 96 98 c7", encoding = ENC_LITTLE_ENDIAN, output = -78125.0},
+        {input = "20 bc 3e 49", encoding = ENC_LITTLE_ENDIAN, output =  781250.0},
+        {input = "28 6b ee ca", encoding = ENC_LITTLE_ENDIAN, output = -7812500.0},
+        {input = "00 00 00 00", encoding = ENC_LITTLE_ENDIAN, output =  0.0},
+        {input = "00 00 00 80", encoding = ENC_LITTLE_ENDIAN, output = -0.0},
+        {input = "00 00 c0 7f", encoding = ENC_LITTLE_ENDIAN, output =  0/0},
+        {input = "00 00 80 7f", encoding = ENC_LITTLE_ENDIAN, output =  1/0},
+        {input = "00 00 80 ff", encoding = ENC_LITTLE_ENDIAN, output = -1/0},
+    }
+
+    local be_double = {
+        {input = "3f 80 00 00 00 00 00 00", encoding = ENC_BIG_ENDIAN, output =  0.0078125},
+        {input = "bf e9 00 00 00 00 00 00", encoding = ENC_BIG_ENDIAN, output = -0.78125},
+        {input = "40 88 6a 00 00 00 00 00", encoding = ENC_BIG_ENDIAN, output =  781.25},
+        {input = "c0 f3 12 d0 00 00 00 00", encoding = ENC_BIG_ENDIAN, output = -78125.0},
+        {input = "41 92 a0 5f 20 00 00 00", encoding = ENC_BIG_ENDIAN, output =  78125000.0},
+        {input = "c1 fd 1a 94 a2 00 00 00", encoding = ENC_BIG_ENDIAN, output = -7812500000.0},
+        {input = "42 9c 6b f5 26 34 00 00", encoding = ENC_BIG_ENDIAN, output =  7812500000000.0},
+        {input = "c3 06 34 57 85 d8 a0 00", encoding = ENC_BIG_ENDIAN, output = -781250000000000.0},
+        {input = "43 a5 af 1d 78 b5 8c 40", encoding = ENC_BIG_ENDIAN, output =  7.8125e+17},
+        {input = "c4 10 f0 cf 06 4d d5 92", encoding = ENC_BIG_ENDIAN, output = -7.8125e+19},
+        {input = "00 00 00 00 00 00 00 00", encoding = ENC_BIG_ENDIAN, output =  0.0},
+        {input = "80 00 00 00 00 00 00 00", encoding = ENC_BIG_ENDIAN, output = -0.0},
+        {input = "7f f8 00 00 00 00 00 00", encoding = ENC_BIG_ENDIAN, output =  0/0},
+        {input = "7f f0 00 00 00 00 00 00", encoding = ENC_BIG_ENDIAN, output =  1/0},
+        {input = "ff f0 00 00 00 00 00 00", encoding = ENC_BIG_ENDIAN, output = -1/0},
+    }
+
+    local le_double = {
+        {input = "00 00 00 00 00 00 80 3f", encoding = ENC_LITTLE_ENDIAN, output =  0.0078125},
+        {input = "00 00 00 00 00 00 e9 bf", encoding = ENC_LITTLE_ENDIAN, output = -0.78125},
+        {input = "00 00 00 00 00 6a 88 40", encoding = ENC_LITTLE_ENDIAN, output =  781.25},
+        {input = "00 00 00 00 d0 12 f3 c0", encoding = ENC_LITTLE_ENDIAN, output = -78125.0},
+        {input = "00 00 00 20 5f a0 92 41", encoding = ENC_LITTLE_ENDIAN, output =  78125000.0},
+        {input = "00 00 00 a2 94 1a fd c1", encoding = ENC_LITTLE_ENDIAN, output = -7812500000.0},
+        {input = "00 00 34 26 f5 6b 9c 42", encoding = ENC_LITTLE_ENDIAN, output =  7812500000000.0},
+        {input = "00 a0 d8 85 57 34 06 c3", encoding = ENC_LITTLE_ENDIAN, output = -781250000000000.0},
+        {input = "40 8c b5 78 1d af a5 43", encoding = ENC_LITTLE_ENDIAN, output =  7.8125e+17},
+        {input = "92 d5 4d 06 cf f0 10 c4", encoding = ENC_LITTLE_ENDIAN, output = -7.8125e+19},
+        {input = "00 00 00 00 00 00 00 00", encoding = ENC_LITTLE_ENDIAN, output =  0.0},
+        {input = "00 00 00 00 00 00 00 80", encoding = ENC_LITTLE_ENDIAN, output = -0.0},
+        {input = "00 00 00 00 00 00 f8 7f", encoding = ENC_LITTLE_ENDIAN, output =  0/0},
+        {input = "00 00 00 00 00 00 f0 7f", encoding = ENC_LITTLE_ENDIAN, output =  1/0},
+        {input = "00 00 00 00 00 00 f0 ff", encoding = ENC_LITTLE_ENDIAN, output = -1/0},
+    }
+
+    function tvbr_float(tvbr, encoding)
+        return tvbr:float(), "float()"
+    end
+
+    function tvbr_le_float(tvbr, encoding)
+        return tvbr:le_float(), "le_float()"
+    end
+
+    return true
+        and run_test_cases_all_tests(tree, "float", be_float, tvbr_float, float_equality_test)
+        and run_test_cases_all_tests(tree, "double", be_double, tvbr_float, float_equality_test)
+        and run_test_cases_all_tests(tree, "float", le_float, tvbr_le_float, float_equality_test)
+        and run_test_cases_all_tests(tree, "double", le_double, tvbr_le_float, float_equality_test)
+end
+
+function address_tests(tree)
+
+    --INCOMPATIBILITY: value fields always assume big-endian encoding for IPv4 addresses
+    local ipv4_test_cases = {
+        {input = "01 00 00 00", encoding = ENC_LITTLE_ENDIAN, output    = Address.ip("0.0.0.1"),
+            incompatible_add_pf_field = true, expect_add_pf_field_value = Address.ip("1.0.0.0"),
+            incompatible_add_field = true, expect_add_field_value = Address.ip("1.0.0.0")
+        },
+        {input = "00 02 00 00", encoding = ENC_LITTLE_ENDIAN, output    = Address.ip("0.0.2.0"),
+            incompatible_add_pf_field = true, expect_add_pf_field_value = Address.ip("0.2.0.0"),
+            incompatible_add_field = true, expect_add_field_value = Address.ip("0.2.0.0")
+        },
+        {input = "00 00 03 00", encoding = ENC_LITTLE_ENDIAN, output    = Address.ip("0.3.0.0"),
+            incompatible_add_pf_field = true, expect_add_pf_field_value = Address.ip("0.0.3.0"),
+            incompatible_add_field = true, expect_add_field_value = Address.ip("0.0.3.0")
+        },
+        {input = "00 00 00 04", encoding = ENC_LITTLE_ENDIAN, output    = Address.ip("4.0.0.0"),
+            incompatible_add_pf_field = true, expect_add_pf_field_value = Address.ip("0.0.0.4"),
+            incompatible_add_field = true, expect_add_field_value = Address.ip("0.0.0.4")
+        },
+        {input = "01 00 00 00", encoding = ENC_BIG_ENDIAN,    output    = Address.ip("1.0.0.0")},
+        {input = "00 02 00 00", encoding = ENC_BIG_ENDIAN,    output    = Address.ip("0.2.0.0")},
+        {input = "00 00 03 00", encoding = ENC_BIG_ENDIAN,    output    = Address.ip("0.0.3.0")},
+        {input = "00 00 00 04", encoding = ENC_BIG_ENDIAN,    output    = Address.ip("0.0.0.4")},
+    }
+
+    function tvbr_ipv4 (tvbr, encoding)
+        if encoding == ENC_LITTLE_ENDIAN then
+            return tvbr:le_ipv4(), "le_ipv4()"
+        else
+            return tvbr:ipv4(), "ipv4()"
+        end
+    end
+
+    local ipv6_test_cases = {
+        {encoding = ENC_BIG_ENDIAN, input = "0000 0000 0000 0000 0000 0000 0000 00ff",
+                      output = Address.ipv6("0000:0000:0000:0000:0000:0000:0000:00ff")},
+        {encoding = ENC_BIG_ENDIAN, input = "0000 0000 0000 0000 0000 0000 0000 ff00",
+                      output = Address.ipv6("0000:0000:0000:0000:0000:0000:0000:ff00")},
+        {encoding = ENC_BIG_ENDIAN, input = "0000 0000 0000 0000 0000 0000 00ff 0000",
+                      output = Address.ipv6("0000:0000:0000:0000:0000:0000:00ff:0000")},
+        {encoding = ENC_BIG_ENDIAN, input = "0000 0000 0000 0000 0000 0000 ff00 0000",
+                      output = Address.ipv6("0000:0000:0000:0000:0000:0000:ff00:0000")},
+        {encoding = ENC_BIG_ENDIAN, input = "0000 0000 0000 0000 0000 00ff 0000 0000",
+                      output = Address.ipv6("0000:0000:0000:0000:0000:00ff:0000:0000")},
+        {encoding = ENC_BIG_ENDIAN, input = "0000 0000 0000 0000 0000 ff00 0000 0000",
+                      output = Address.ipv6("0000:0000:0000:0000:0000:ff00:0000:0000")},
+        {encoding = ENC_BIG_ENDIAN, input = "0000 0000 0000 0000 00ff 0000 0000 0000",
+                      output = Address.ipv6("0000:0000:0000:0000:00ff:0000:0000:0000")},
+        {encoding = ENC_BIG_ENDIAN, input = "0000 0000 0000 0000 ff00 0000 0000 0000",
+                      output = Address.ipv6("0000:0000:0000:0000:ff00:0000:0000:0000")},
+        {encoding = ENC_BIG_ENDIAN, input = "0000 0000 0000 00ff 0000 0000 0000 0000",
+                      output = Address.ipv6("0000:0000:0000:00ff:0000:0000:0000:0000")},
+        {encoding = ENC_BIG_ENDIAN, input = "0000 0000 0000 ff00 0000 0000 0000 0000",
+                      output = Address.ipv6("0000:0000:0000:ff00:0000:0000:0000:0000")},
+        {encoding = ENC_BIG_ENDIAN, input = "0000 0000 00ff 0000 0000 0000 0000 0000",
+                      output = Address.ipv6("0000:0000:00ff:0000:0000:0000:0000:0000")},
+        {encoding = ENC_BIG_ENDIAN, input = "0000 0000 ff00 0000 0000 0000 0000 0000",
+                      output = Address.ipv6("0000:0000:ff00:0000:0000:0000:0000:0000")},
+        {encoding = ENC_BIG_ENDIAN, input = "0000 00ff 0000 0000 0000 0000 0000 0000",
+                      output = Address.ipv6("0000:00ff:0000:0000:0000:0000:0000:0000")},
+        {encoding = ENC_BIG_ENDIAN, input = "0000 ff00 0000 0000 0000 0000 0000 0000",
+                      output = Address.ipv6("0000:ff00:0000:0000:0000:0000:0000:0000")},
+        {encoding = ENC_BIG_ENDIAN, input = "00ff 0000 0000 0000 0000 0000 0000 0000",
+                      output = Address.ipv6("00ff:0000:0000:0000:0000:0000:0000:0000")},
+        {encoding = ENC_BIG_ENDIAN, input = "ff00 0000 0000 0000 0000 0000 0000 0000",
+                      output = Address.ipv6("ff00:0000:0000:0000:0000:0000:0000:0000")},
+    }
+
+    function tvbr_ipv6 (tvbr, encoding)
+        return tvbr:ipv6(), "ipv6()"
+    end
+
+    local ether_test_cases = {
+        {input = "ff 00 00 00 00 00", encoding = 0, output = Address.ether("ff:00:00:00:00:00")},
+        {input = "00 ff 00 00 00 00", encoding = 0, output = Address.ether("00:ff:00:00:00:00")},
+        {input = "00 00 ff 00 00 00", encoding = 0, output = Address.ether("00:00:ff:00:00:00")},
+        {input = "00 00 00 ff 00 00", encoding = 0, output = Address.ether("00:00:00:ff:00:00")},
+        {input = "00 00 00 00 ff 00", encoding = 0, output = Address.ether("00:00:00:00:ff:00")},
+        {input = "00 00 00 00 00 ff", encoding = 0, output = Address.ether("00:00:00:00:00:ff")},
+    }
+
+    function tvbr_ether (tvbr, encoding)
+        return tvbr:ether(), "ether()"
+    end
+
+    return true
+        and run_test_cases_all_tests(tree, "ipv4", ipv4_test_cases, tvbr_ipv4, general_equality_test)
+        and run_test_cases_all_tests(tree, "ipv6", ipv6_test_cases, tvbr_ipv6, general_equality_test)
+        and run_test_cases_all_tests(tree, "ether", ether_test_cases, tvbr_ether, general_equality_test)
+end
+
+function time_tests(tree)
+
+    local time_cases = {
+        {input ="00 01 02 03", encoding = ENC_BIG_ENDIAN,    output = NSTime(0x00010203,0)},
+        {input ="03 02 01 00", encoding = ENC_LITTLE_ENDIAN, output = NSTime(0x00010203,0)},
+        {input ="00 01 02 03 04 05 06 07", encoding = ENC_BIG_ENDIAN,    output = NSTime(0x00010203, 0x04050607)},
+        {input ="03 02 01 00 07 06 05 04", encoding = ENC_LITTLE_ENDIAN, output = NSTime(0x00010203, 0x04050607)},
+    }
+
+    local string_cases = {
+        {input = "1994-11-05T13:15:30Z",      encoding = ENC_ISO_8601_DATE_TIME, output = NSTime(784041330, 0),
+            hexlify=true},
+        {input = "1994-11-05T13:15:30Z12345", encoding = ENC_ISO_8601_DATE_TIME, output = NSTime(784041330, 0),
+            hexlify=true, variable_input_length = true, input_length = 20},
+    }
+
+    function tvbr_nstime(tvbr, encoding)
+        if encoding == ENC_LITTLE_ENDIAN then
+            return tvbr:le_nstime(), "le_nstime()"
+        else
+            return tvbr:nstime(encoding), string.format("nstime(%s)", format_encoding_for_print(encoding))
+        end
+    end
+
+    return true
+        and run_test_cases_all_tests(tree, "relative_time", time_cases, tvbr_nstime, general_equality_test)
+        and run_test_cases_all_tests(tree, "absolute_time", time_cases, tvbr_nstime, general_equality_test)
+        and run_test_cases_all_tests(tree, "absolute_time", string_cases, tvbr_nstime, general_equality_test)
+end
+
+function bytearray_tests(tree)
+
+    local bytes_tests = {
+        {input = "00 01 02 03 ff", encoding = 0, output = ByteArray.new("00 01 02 03 ff")}
+    }
+
+    function tvbr_bytes(tvbr, encoding)
+        return tvbr:bytes(), "bytes()"
+    end
+
+    local varbytes_tests = {
+        {input = "04 00 01 02 ff",          encoding = ENC_BIG_ENDIAN,
+            output = ByteArray.new("00 01 02 ff"), fake_input_length = 1},
+        {input = "00 04 00 01 02 ff",       encoding = ENC_BIG_ENDIAN,
+            output = ByteArray.new("00 01 02 ff"), fake_input_length = 2},
+        {input = "00 00 00 04 00 01 02 ff", encoding = ENC_BIG_ENDIAN,
+            output = ByteArray.new("00 01 02 ff"), fake_input_length = 4},
+    }
+
+    return true
+        and run_test_cases_all_tests(tree, "bytes", bytes_tests, tvbr_bytes, general_equality_test)
+        and run_test_cases_all_tests(tree, "oid", bytes_tests, tvbr_bytes, general_equality_test)
+        and run_test_cases_all_tests(tree, "rel_oid", bytes_tests, tvbr_bytes, general_equality_test)
+        and run_test_cases_all_tests(tree, "system_id", bytes_tests, tvbr_bytes, general_equality_test)
+        and run_test_cases_all_tests(tree, "uint_bytes", varbytes_tests, nil, general_equality_test)
+end
+
+function run_all_tests(tree)
+    return true
+        and simple_integer_tests(tree)
+        and integer64_tests(tree)
+        and string_tests(tree)
+        and bool_char_tests(tree)
+        and float_tests(tree)
+        and address_tests(tree)
+        and time_tests(tree)
+        and bytearray_tests(tree)
+end
+
+local has_run = false
+function myproto.dissector(tvb, pkt, root)
+    if has_run then
+        return
+    end
+    has_run = true
+    local tree = root:add(myproto, tvb(0))
+    if run_all_tests(tree) then
+        print("All tests passed!")
+        print()
+    end
+end
+
+DissectorTable.get("udp.port"):add(65333, myproto)