Added a generic dissector validator and some ASTERIX unit tests that use it.

This patch extends the test suite with:
* a way for tests to check if a given byte sequence dissects into an expected dissection result.

Unit tests included:
* ASTERIX I019
* ASTERIX I063
* ASTERIX I065

Change-Id: Ib168382ec15b0b610ff5913806120ba1bf1d1503
Reviewed-on: https://code.wireshark.org/review/31083
Petri-Dish: Peter Wu <peter@lekensteyn.nl>
Tested-by: Petri Dish Buildbot
Reviewed-by: Peter Wu <peter@lekensteyn.nl>

3 files changed, 1618 insertions, 0 deletions

diff --git a/test/suite_dissectors/__init__.py b/test/suite_dissectors/__init__.py
new file mode 100644
index 0000000000..79ccaf1221
--- /dev/null
+++ b/test/suite_dissectors/__init__.py
@@ -0,0 +1,16 @@
+#
+# Copyright (C) 2013 by Gilbert Ramirez <gram@alumni.rice.edu>
+#
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+import os.path
+import unittest
+
+# Run by unittest.defaultTestLoader.discover in test.py
+
+
+def load_tests(loader, standard_tests, pattern):
+    this_dir = os.path.dirname(__file__)
+    package_tests = loader.discover(start_dir=this_dir, pattern='group_*.py')
+    standard_tests.addTests(package_tests)
+    return standard_tests
diff --git a/test/suite_dissectors/dissectorstest.py b/test/suite_dissectors/dissectorstest.py
new file mode 100644
index 0000000000..7c799d8795
--- /dev/null
+++ b/test/suite_dissectors/dissectorstest.py
@@ -0,0 +1,119 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+#
+# Wireshark dissector tests
+# By Atli Guðmundsson <atli@tern.is>
+#
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+# Standard modules
+import inspect
+import json
+
+# Wireshark modules
+import fixtures
+import subprocesstest
+
+
+class _dissection_validator_real:
+    '''
+    Collects a set of byte bundles, matching json objects and a protocol
+    name and verifies that a byte bundle converts into the matching json
+    object using the following execution chain:
+
+        byte bundle -> text2pcap -> tshark <protocol> -> json
+
+    Note: The idea for this approach came about when it was realized that
+    calling text2pcap and tshark for each byte bundle resulted in
+    unacceptable overhead during execution of the unittests.
+    '''
+
+    def __init__(self, protocol, request, cmd_tshark, cmd_text2pcap):
+        self.dissection_list = []
+        self.protocol = protocol
+        self.cmd_tshark = cmd_tshark
+        self.cmd_text2pcap = cmd_text2pcap
+        self.test_case = request.instance
+
+    def add_dissection(self, byte_list, expected_result, line_no=None):
+        '''Adds a byte bundle and an expected result to the set of byte
+        bundles to verify.
+
+        byte bundles must be iterable.'''
+
+        hex_string = ' '.join('{:02x}'.format(ele) for ele in bytes(byte_list))
+
+        if line_no is None:
+            caller = inspect.getframeinfo(inspect.stack()[1][0])
+            line_no = caller.lineno
+
+        self.dissection_list.append((line_no, hex_string, expected_result))
+
+# Uncomment the following lines to record in a text file all the dissector byte
+# bundles, in the order they are presented:
+#
+#         with open("full.txt", 'a') as f:
+#             f.write("0 {}\n".format(hex_string))
+
+# Then use the following command to convert full.txt into a pcap file,
+# replacing <port> with the default port of your protocol:
+#       # text2pcap -u <port>,<port> full.txt out.pcap
+
+    def check_dissections(self):
+        '''Processes and verifies all added byte bundles and their expected
+        results. At the end of processing the current set is emptied.'''
+
+        text_file = self.test_case.filename_from_id('txt')
+        pcap_file = self.test_case.filename_from_id('pcap')
+
+        # create our text file of hex encoded messages
+        with open(text_file, 'w') as f:
+            for line_no, hex_string, expected_result in self.dissection_list:
+                f.write("0 {}\n".format(hex_string))
+
+        # generate our pcap file by feeding the messages to text2pcap
+        self.test_case.runProcess((
+            self.cmd_text2pcap,
+            '-u', '1234,1234',
+            text_file, pcap_file
+        ))
+
+        # generate our dissection from our pcap file
+        tshark_proc = self.test_case.runProcess((
+            self.cmd_tshark,
+            '-r', pcap_file,
+            '-T', 'json',
+            '-d', 'udp.port==1234,{}'.format(self.protocol),
+            '-J', self.protocol
+        ))
+
+        dissections = json.loads(tshark_proc.stdout_str)
+        for (line_no, hex_string, expected_result), dissection in zip(self.dissection_list, dissections):
+
+            # strip away everything except the protocol
+            result = dissection['_source']['layers']
+            self.test_case.assertIn(self.protocol, result)
+            result = result[self.protocol]
+
+            # verify that the dissection is as expected
+            self.test_case.assertEqual(
+                expected_result,
+                result,
+                "expected != result, while dissecting [{}] from line {}.".format(hex_string, line_no))
+
+        # cleanup for next test
+        self.dissection_list = []
+
+
+@fixtures.fixture
+def dissection_validator(request, cmd_tshark, cmd_text2pcap):
+
+    def generate_validator(protocol):
+        retval = _dissection_validator_real(
+            protocol,
+            request,
+            cmd_tshark,
+            cmd_text2pcap)
+        return retval
+
+    return generate_validator
diff --git a/test/suite_dissectors/group_asterix.py b/test/suite_dissectors/group_asterix.py
new file mode 100644
index 0000000000..44e21178c7
--- /dev/null
+++ b/test/suite_dissectors/group_asterix.py
@@ -0,0 +1,1483 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+#
+# Wireshark ASTERIX dissector tests
+# By Atli Guðmundsson <atli@tern.is>
+#
+# SPDX-License-Identifier: GPL-2.0-or-later
+#
+'''ASTERIX dissector tests'''
+
+# Standard modules
+import inspect
+
+# Wireshark modules
+import fixtures
+import subprocesstest
+import suite_dissectors.dissectorstest
+
+
+@fixtures.mark_usefixtures('test_env')
+@fixtures.uses_fixtures
+class case_asterix(subprocesstest.SubprocessTestCase):
+
+    def test_for_asterix(self, dissection_validator):
+        '''Verifies that the asterix dissector is installed and accessible'''
+
+        tester = dissection_validator('asterix')
+        tester.add_dissection(
+            [0x13, 0x00, 0x03],
+            {
+                "asterix.category": "19",
+                "asterix.length": "3"
+            }
+        )
+        tester.check_dissections()
+
+
+class _asterix_validator_real:
+
+    def __init__(self, category, dissection_validator):
+        self.category = category
+        self.validator = dissection_validator("asterix")
+
+    def add_dissection(self, byte_list, field, expected_message, line_no=None):
+        '''pre-wrap asterix category messages with proper asterix structure'''
+
+        total_length = len(byte_list) + 3
+        byte_list = [
+            self.category,
+            (total_length // 256) % 256,
+            total_length % 256
+        ] + byte_list
+        expected_result = {
+            "asterix.category": "{}".format(self.category),
+            "asterix.length": "{}".format(total_length),
+            "asterix.message":
+            {
+                "asterix.fspec": "",
+                field: expected_message
+            }
+        }
+        if line_no is None:
+            caller = inspect.getframeinfo(inspect.stack()[1][0])
+            line_no = caller.lineno
+        self.validator.add_dissection(byte_list, expected_result, line_no)
+
+    def check_dissections(self):
+        self.validator.check_dissections()
+
+
+@fixtures.fixture
+def asterix_validator(dissection_validator):
+
+    def generate_asterix_validator(category):
+        retval = _asterix_validator_real(category, dissection_validator)
+        return retval
+
+    return generate_asterix_validator
+
+
+@fixtures.mark_usefixtures('test_env')
+@fixtures.uses_fixtures
+class case_category_019(subprocesstest.SubprocessTestCase):
+    '''
+    Unittest case for ASTERIX Category 019
+
+    Online specification:
+    https://www.eurocontrol.int/publications/cat019-multilateration-system-status-messages-part-18
+
+    Part 18 : Category 019 (1.3)
+    Multilateration System
+    Status Messages
+
+    Standard User Application Profile
+
+    FRN Data Item Information                                Length
+     1  I019/010  Data Source Identifier                      2
+     2  I019/000  Message Type                                1
+     3  I019/140  Time of Day                                 3
+     4  I019/550  System Status                               1
+     5  I019/551  Tracking Processor Detailed Status          1
+     6  I019/552  Remote Sensor Detailed Status               1+
+     7  I019/553  Reference Transponder Detailed Status       1+
+    FX   -        Field Extension Indicator                   -
+     8  I019/600  Position of the MLT System Reference point  8
+     9  I019/610  Height of the MLT System Reference point    2
+    10  I019/620  WGS-84 Undulation                           1
+    11   -        Spare                                       -
+    12   -        Spare                                       -
+    13  RE        Reserved Expansion Field                    -
+    14  SP        Special Purpose Field                       -
+    FX   -        Field Extension Indicator                   -
+    '''
+
+    maxDiff = None
+
+    def test_for_fields(self, asterix_validator):
+        '''verifies existence of all fields and their maximum value'''
+
+        validator = asterix_validator(19)
+
+        validator.add_dissection(
+            [0x80, 0xff, 0x00],
+            "asterix.019_010",
+            {
+                "asterix.SAC": "255",
+                "asterix.SIC": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x80, 0x00, 0xff],
+            "asterix.019_010",
+            {
+                "asterix.SAC": "0",
+                "asterix.SIC": "255"
+            }
+        )
+        validator.add_dissection(
+            [0x40, 0x03],
+            "asterix.019_000",
+            {
+                "asterix.019_000_MT": "3"
+            }
+        )
+        validator.add_dissection(
+            [0x20, 0xa8, 0xbf, 0xff],
+            "asterix.019_140",
+            {
+                "asterix.TOD": "86399.9921875"
+            }
+        )
+        validator.add_dissection(
+            [0x10, 0xc0],
+            "asterix.019_550",
+            {
+                "asterix.019_550_NOGO": "3",
+                "asterix.019_550_OVL": "0",
+                "asterix.019_550_TSV": "0",
+                "asterix.019_550_TTF": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x10, 0x20],
+            "asterix.019_550",
+            {
+                "asterix.019_550_NOGO": "0",
+                "asterix.019_550_OVL": "1",
+                "asterix.019_550_TSV": "0",
+                "asterix.019_550_TTF": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x10, 0x10],
+            "asterix.019_550",
+            {
+                "asterix.019_550_NOGO": "0",
+                "asterix.019_550_OVL": "0",
+                "asterix.019_550_TSV": "1",
+                "asterix.019_550_TTF": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x10, 0x08],
+            "asterix.019_550",
+            {
+                "asterix.019_550_NOGO": "0",
+                "asterix.019_550_OVL": "0",
+                "asterix.019_550_TSV": "0",
+                "asterix.019_550_TTF": "1"
+            }
+        )
+        validator.add_dissection(
+            [0x08, 0x80],
+            "asterix.019_551",
+            {
+                "asterix.019_551_SP1_EXEC": "1",
+                "asterix.019_551_SP1_GOOD": "0",
+                "asterix.019_551_SP2_EXEC": "0",
+                "asterix.019_551_SP2_GOOD": "0",
+                "asterix.019_551_SP3_EXEC": "0",
+                "asterix.019_551_SP3_GOOD": "0",
+                "asterix.019_551_SP4_EXEC": "0",
+                "asterix.019_551_SP4_GOOD": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x08, 0x40],
+            "asterix.019_551",
+            {
+                "asterix.019_551_SP1_EXEC": "0",
+                "asterix.019_551_SP1_GOOD": "1",
+                "asterix.019_551_SP2_EXEC": "0",
+                "asterix.019_551_SP2_GOOD": "0",
+                "asterix.019_551_SP3_EXEC": "0",
+                "asterix.019_551_SP3_GOOD": "0",
+                "asterix.019_551_SP4_EXEC": "0",
+                "asterix.019_551_SP4_GOOD": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x08, 0x20],
+            "asterix.019_551",
+            {
+                "asterix.019_551_SP1_EXEC": "0",
+                "asterix.019_551_SP1_GOOD": "0",
+                "asterix.019_551_SP2_EXEC": "1",
+                "asterix.019_551_SP2_GOOD": "0",
+                "asterix.019_551_SP3_EXEC": "0",
+                "asterix.019_551_SP3_GOOD": "0",
+                "asterix.019_551_SP4_EXEC": "0",
+                "asterix.019_551_SP4_GOOD": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x08, 0x10],
+            "asterix.019_551",
+            {
+                "asterix.019_551_SP1_EXEC": "0",
+                "asterix.019_551_SP1_GOOD": "0",
+                "asterix.019_551_SP2_EXEC": "0",
+                "asterix.019_551_SP2_GOOD": "1",
+                "asterix.019_551_SP3_EXEC": "0",
+                "asterix.019_551_SP3_GOOD": "0",
+                "asterix.019_551_SP4_EXEC": "0",
+                "asterix.019_551_SP4_GOOD": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x08, 0x08],
+            "asterix.019_551",
+            {
+                "asterix.019_551_SP1_EXEC": "0",
+                "asterix.019_551_SP1_GOOD": "0",
+                "asterix.019_551_SP2_EXEC": "0",
+                "asterix.019_551_SP2_GOOD": "0",
+                "asterix.019_551_SP3_EXEC": "1",
+                "asterix.019_551_SP3_GOOD": "0",
+                "asterix.019_551_SP4_EXEC": "0",
+                "asterix.019_551_SP4_GOOD": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x08, 0x04],
+            "asterix.019_551",
+            {
+                "asterix.019_551_SP1_EXEC": "0",
+                "asterix.019_551_SP1_GOOD": "0",
+                "asterix.019_551_SP2_EXEC": "0",
+                "asterix.019_551_SP2_GOOD": "0",
+                "asterix.019_551_SP3_EXEC": "0",
+                "asterix.019_551_SP3_GOOD": "1",
+                "asterix.019_551_SP4_EXEC": "0",
+                "asterix.019_551_SP4_GOOD": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x08, 0x02],
+            "asterix.019_551",
+            {
+                "asterix.019_551_SP1_EXEC": "0",
+                "asterix.019_551_SP1_GOOD": "0",
+                "asterix.019_551_SP2_EXEC": "0",
+                "asterix.019_551_SP2_GOOD": "0",
+                "asterix.019_551_SP3_EXEC": "0",
+                "asterix.019_551_SP3_GOOD": "0",
+                "asterix.019_551_SP4_EXEC": "1",
+                "asterix.019_551_SP4_GOOD": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x08, 0x01],
+            "asterix.019_551",
+            {
+                "asterix.019_551_SP1_EXEC": "0",
+                "asterix.019_551_SP1_GOOD": "0",
+                "asterix.019_551_SP2_EXEC": "0",
+                "asterix.019_551_SP2_GOOD": "0",
+                "asterix.019_551_SP3_EXEC": "0",
+                "asterix.019_551_SP3_GOOD": "0",
+                "asterix.019_551_SP4_EXEC": "0",
+                "asterix.019_551_SP4_GOOD": "1"
+            }
+        )
+        validator.add_dissection(
+            [0x04, 0x00],
+            "asterix.019_552",
+            {
+                "asterix.counter": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x04, 0x01, 0xff, 0x00],
+            "asterix.019_552",
+            {
+                "asterix.counter": "1",
+                "asterix.019_552":
+                {
+                    "asterix.019_552_RS_Identification": "255",
+                    "asterix.019_552_Receiver_1090_MHz": "0",
+                    "asterix.019_552_Transmitter_1030_MHz": "0",
+                    "asterix.019_552_Transmitter_1090_MHz": "0",
+                    "asterix.019_552_RS_Status": "0",
+                    "asterix.019_552_RS_Operational": "0"
+                }
+            }
+        )
+        validator.add_dissection(
+            [0x04, 0x01, 0x00, 0x40],
+            "asterix.019_552",
+            {
+                "asterix.counter": "1",
+                "asterix.019_552":
+                {
+                    "asterix.019_552_RS_Identification": "0",
+                    "asterix.019_552_Receiver_1090_MHz": "1",
+                    "asterix.019_552_Transmitter_1030_MHz": "0",
+                    "asterix.019_552_Transmitter_1090_MHz": "0",
+                    "asterix.019_552_RS_Status": "0",
+                    "asterix.019_552_RS_Operational": "0"
+                }
+            }
+        )
+        validator.add_dissection(
+            [0x04, 0x01, 0x00, 0x20],
+            "asterix.019_552",
+            {
+                "asterix.counter": "1",
+                "asterix.019_552":
+                {
+                    "asterix.019_552_RS_Identification": "0",
+                    "asterix.019_552_Receiver_1090_MHz": "0",
+                    "asterix.019_552_Transmitter_1030_MHz": "1",
+                    "asterix.019_552_Transmitter_1090_MHz": "0",
+                    "asterix.019_552_RS_Status": "0",
+                    "asterix.019_552_RS_Operational": "0"
+                }
+            }
+        )
+        validator.add_dissection(
+            [0x04, 0x01, 0x00, 0x10],
+            "asterix.019_552",
+            {
+                "asterix.counter": "1",
+                "asterix.019_552":
+                {
+                    "asterix.019_552_RS_Identification": "0",
+                    "asterix.019_552_Receiver_1090_MHz": "0",
+                    "asterix.019_552_Transmitter_1030_MHz": "0",
+                    "asterix.019_552_Transmitter_1090_MHz": "1",
+                    "asterix.019_552_RS_Status": "0",
+                    "asterix.019_552_RS_Operational": "0"
+                }
+            }
+        )
+        validator.add_dissection(
+            [0x04, 0x01, 0x00, 0x08],
+            "asterix.019_552",
+            {
+                "asterix.counter": "1",
+                "asterix.019_552":
+                {
+                    "asterix.019_552_RS_Identification": "0",
+                    "asterix.019_552_Receiver_1090_MHz": "0",
+                    "asterix.019_552_Transmitter_1030_MHz": "0",
+                    "asterix.019_552_Transmitter_1090_MHz": "0",
+                    "asterix.019_552_RS_Status": "1",
+                    "asterix.019_552_RS_Operational": "0"
+                }
+            }
+        )
+        validator.add_dissection(
+            [0x04, 0x01, 0x00, 0x04],
+            "asterix.019_552",
+            {
+                "asterix.counter": "1",
+                "asterix.019_552":
+                {
+                    "asterix.019_552_RS_Identification": "0",
+                    "asterix.019_552_Receiver_1090_MHz": "0",
+                    "asterix.019_552_Transmitter_1030_MHz": "0",
+                    "asterix.019_552_Transmitter_1090_MHz": "0",
+                    "asterix.019_552_RS_Status": "0",
+                    "asterix.019_552_RS_Operational": "1"
+                }
+            }
+        )
+        validator.add_dissection(
+            [0x04, 0x03, 0x12, 0x34, 0x56, 0x78, 0x9a, 0x0c],
+            "asterix.019_552",
+            {
+                "asterix.counter": "3",
+                "asterix.019_552":
+                {
+                    "asterix.019_552_RS_Identification": "18",
+                    "asterix.019_552_Receiver_1090_MHz": "0",
+                    "asterix.019_552_Transmitter_1030_MHz": "1",
+                    "asterix.019_552_Transmitter_1090_MHz": "1",
+                    "asterix.019_552_RS_Status": "0",
+                    "asterix.019_552_RS_Operational": "1"
+                },
+                "asterix.019_552":
+                {
+                    "asterix.019_552_RS_Identification": "86",
+                    "asterix.019_552_Receiver_1090_MHz": "1",
+                    "asterix.019_552_Transmitter_1030_MHz": "1",
+                    "asterix.019_552_Transmitter_1090_MHz": "1",
+                    "asterix.019_552_RS_Status": "1",
+                    "asterix.019_552_RS_Operational": "0"
+                },
+                "asterix.019_552":
+                {
+                    "asterix.019_552_RS_Identification": "154",
+                    "asterix.019_552_Receiver_1090_MHz": "0",
+                    "asterix.019_552_Transmitter_1030_MHz": "0",
+                    "asterix.019_552_Transmitter_1090_MHz": "0",
+                    "asterix.019_552_RS_Status": "1",
+                    "asterix.019_552_RS_Operational": "1"
+                }
+            }
+        )
+        validator.add_dissection(
+            [0x02, 0xc0],
+            "asterix.019_553",
+            {
+                "asterix.019_553_Ref_Trans_1_Status": "3",
+                "asterix.019_553_Ref_Trans_2_Status": "0",
+                "asterix.FX": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x02, 0x0c],
+            "asterix.019_553",
+            {
+                "asterix.019_553_Ref_Trans_1_Status": "0",
+                "asterix.019_553_Ref_Trans_2_Status": "3",
+                "asterix.FX": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x02, 0x01, 0x01, 0x0c],
+            "asterix.019_553",
+            {
+                "asterix.019_553_Ref_Trans_1_Status": "0",
+                "asterix.019_553_Ref_Trans_2_Status": "0",
+                "asterix.019_553_Ref_Trans_3_Status": "0",
+                "asterix.019_553_Ref_Trans_4_Status": "0",
+                "asterix.019_553_Ref_Trans_5_Status": "0",
+                "asterix.019_553_Ref_Trans_6_Status": "3",
+                "asterix.FX": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x80, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],
+            "asterix.019_600",
+            {
+                "asterix.019_600_Latitude": "90",
+                "asterix.019_600_Longitude": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x80, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],
+            "asterix.019_600",
+            {
+                "asterix.019_600_Latitude": "-90",
+                "asterix.019_600_Longitude": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x80, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00],
+            "asterix.019_600",
+            {
+                "asterix.019_600_Latitude": "0",
+                "asterix.019_600_Longitude": "180"
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x80, 0x00, 0x00, 0x00, 0x00, 0xc0, 0x00, 0x00, 0x00],
+            "asterix.019_600",
+            {
+                "asterix.019_600_Latitude": "0",
+                "asterix.019_600_Longitude": "-180"
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x40, 0x7f, 0xff],
+            "asterix.019_610",
+            {
+                "asterix.019_610_Height": "8191.75"
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x40, 0x80, 0x00],
+            "asterix.019_610",
+            {
+                "asterix.019_610_Height": "-8192"
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x20, 0x7f],
+            "asterix.019_620",
+            {
+                "asterix.019_620_Undulation": "127"
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x20, 0x81],
+            "asterix.019_620",
+            {
+                "asterix.019_620_Undulation": "-127"
+            }
+        )
+
+        validator.check_dissections()
+
+    def test_undefined_value_handling(self, asterix_validator):
+        '''verifies that the dissector can dissect undefined field values by setting
+        the maximum value of bits or by setting all undefined bits'''
+
+        validator = asterix_validator(19)
+
+        validator.add_dissection(
+            [0x40, 0xff],
+            "asterix.019_000",
+            {
+                "asterix.019_000_MT": "255"
+            }
+        )
+        validator.add_dissection(
+            [0x20, 0xff, 0xff, 0xff],
+            "asterix.019_140",
+            {
+                "asterix.TOD": "131071.9921875"
+            }
+        )
+        validator.add_dissection(
+            [0x10, 0x07],
+            "asterix.019_550",
+            {
+                "asterix.019_550_NOGO": "0",
+                "asterix.019_550_OVL": "0",
+                "asterix.019_550_TSV": "0",
+                "asterix.019_550_TTF": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x04, 0x01, 0x00, 0x83],
+            "asterix.019_552",
+            {
+                "asterix.counter": "1",
+                "asterix.019_552":
+                {
+                    "asterix.019_552_RS_Identification": "0",
+                    "asterix.019_552_Receiver_1090_MHz": "0",
+                    "asterix.019_552_Transmitter_1030_MHz": "0",
+                    "asterix.019_552_Transmitter_1090_MHz": "0",
+                    "asterix.019_552_RS_Status": "0",
+                    "asterix.019_552_RS_Operational": "0"
+                }
+            }
+        )
+        validator.add_dissection(
+            [0x02, 0x32],
+            "asterix.019_553",
+            {
+                "asterix.019_553_Ref_Trans_1_Status": "0",
+                "asterix.019_553_Ref_Trans_2_Status": "0",
+                "asterix.FX": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x02, 0x33, 0x33, 0x32],
+            "asterix.019_553",
+            {
+                "asterix.019_553_Ref_Trans_1_Status": "0",
+                "asterix.019_553_Ref_Trans_2_Status": "0",
+                "asterix.019_553_Ref_Trans_3_Status": "0",
+                "asterix.019_553_Ref_Trans_4_Status": "0",
+                "asterix.019_553_Ref_Trans_5_Status": "0",
+                "asterix.019_553_Ref_Trans_6_Status": "0",
+                "asterix.FX": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x80, 0x7f, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00],
+            "asterix.019_600",
+            {
+                "asterix.019_600_Latitude": "359.999999832362",
+                "asterix.019_600_Longitude": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x80, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00],
+            "asterix.019_600",
+            {
+                "asterix.019_600_Latitude": "-360",
+                "asterix.019_600_Longitude": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x80, 0x00, 0x00, 0x00, 0x00, 0x7f, 0xff, 0xff, 0xff],
+            "asterix.019_600",
+            {
+                "asterix.019_600_Latitude": "0",
+                "asterix.019_600_Longitude": "359.999999832362"
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x80, 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00],
+            "asterix.019_600",
+            {
+                "asterix.019_600_Latitude": "0",
+                "asterix.019_600_Longitude": "-360"
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x20, 0x80],
+            "asterix.019_620",
+            {
+                "asterix.019_620_Undulation": "-128"
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x10],
+            "asterix.spare",
+            ""
+        )
+        validator.add_dissection(
+            [0x01, 0x08],
+            "asterix.spare",
+            ""
+        )
+        validator.add_dissection(
+            [0x01, 0x04, 0x02, 0x00],
+            "asterix.019_RE",
+            {
+                "asterix.re_field_len": "2",
+                "asterix.fspec": ""
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x04, 0x10, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88,
+             0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff],
+            "asterix.019_RE",
+            {
+                "asterix.fspec": "",
+                "asterix.re_field_len": "16"
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x02, 0x01],
+            "asterix.019_SP",
+            ""
+        )
+        validator.add_dissection(
+            [0x01, 0x02, 0x10, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88,
+             0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff],
+            "asterix.019_SP",
+            ""
+        )
+
+        validator.check_dissections()
+
+
+@fixtures.mark_usefixtures('test_env')
+@fixtures.uses_fixtures
+class case_category_063(subprocesstest.SubprocessTestCase):
+    '''
+    Unittest case for ASTERIX Category 063
+
+    Online specification:
+    https://www.eurocontrol.int/publications/cat063-sensor-status-messages-part-10
+
+    Part 10: Category 63 (1.4)
+    Sensor Status Messages
+
+    Standard User Application Profile
+
+    FRN Data Item Information                                Length
+     1  I063/010  Data Source Identifier                      2
+     2  I063/015  Service Identification                      1
+     3  I063/030  Time of Message                             3
+     4  I063/050  Sensor Identifier                           2
+     5  I063/060  Sensor Configuration and Status             1+1
+     6  I063/070  Time Stamping Bias                          2
+     7  I063/080  SSR/Mode S Range Gain and Bias              4
+    FX   -        Field extension indicator                   -
+     8  I063/081  SSR/Mode S Azimuth Bias                     2
+     9  I063/090  PSR Range Gain and Bias                     4
+    10  I063/091  PSR Azimuth Bias                            2
+    11  I063/092  PSR Elevation Bias                          2
+    12   -        spare                                       -
+    13  RE        Reserved Expansion Field                    1+1+
+    14  SP        Special Purpose Field                       1+1+
+    FX   -        Field extension indicator                   -
+    '''
+
+    maxDiff = None
+
+    def test_for_fields(self, asterix_validator):
+        '''verifies existence of all fields and their maximum value'''
+
+        validator = asterix_validator(63)
+
+        validator.add_dissection(
+            [0x80, 0xff, 0x00],
+            "asterix.063_010",
+            {
+                "asterix.SAC": "255",
+                "asterix.SIC": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x80, 0x00, 0xff],
+            "asterix.063_010",
+            {
+                "asterix.SAC": "0",
+                "asterix.SIC": "255"
+            }
+        )
+        validator.add_dissection(
+            [0x40, 0xff],
+            "asterix.063_015",
+            {
+                "asterix.063_015_SI": "255"
+            }
+        )
+        validator.add_dissection(
+            [0x20, 0xa8, 0xbf, 0xff],
+            "asterix.063_030",
+            {
+                "asterix.TOD": "86399.9921875"
+            }
+        )
+        validator.add_dissection(
+            [0x10, 0xff, 0x00],
+            "asterix.063_050",
+            {
+                "asterix.SAC": "255",
+                "asterix.SIC": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x10, 0x00, 0xff],
+            "asterix.063_050",
+            {
+                "asterix.SAC": "0",
+                "asterix.SIC": "255"
+            }
+        )
+        validator.add_dissection(
+            [0x08, 0xc0],
+            "asterix.063_060",
+            {
+                "asterix.063_060_CON": "3",
+                "asterix.063_060_PSR": "0",
+                "asterix.063_060_SSR": "0",
+                "asterix.063_060_MDS": "0",
+                "asterix.063_060_ADS": "0",
+                "asterix.063_060_MLT": "0",
+                "asterix.FX": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x08, 0x20],
+            "asterix.063_060",
+            {
+                "asterix.063_060_CON": "0",
+                "asterix.063_060_PSR": "1",
+                "asterix.063_060_SSR": "0",
+                "asterix.063_060_MDS": "0",
+                "asterix.063_060_ADS": "0",
+                "asterix.063_060_MLT": "0",
+                "asterix.FX": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x08, 0x10],
+            "asterix.063_060",
+            {
+                "asterix.063_060_CON": "0",
+                "asterix.063_060_PSR": "0",
+                "asterix.063_060_SSR": "1",
+                "asterix.063_060_MDS": "0",
+                "asterix.063_060_ADS": "0",
+                "asterix.063_060_MLT": "0",
+                "asterix.FX": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x08, 0x08],
+            "asterix.063_060",
+            {
+                "asterix.063_060_CON": "0",
+                "asterix.063_060_PSR": "0",
+                "asterix.063_060_SSR": "0",
+                "asterix.063_060_MDS": "1",
+                "asterix.063_060_ADS": "0",
+                "asterix.063_060_MLT": "0",
+                "asterix.FX": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x08, 0x04],
+            "asterix.063_060",
+            {
+                "asterix.063_060_CON": "0",
+                "asterix.063_060_PSR": "0",
+                "asterix.063_060_SSR": "0",
+                "asterix.063_060_MDS": "0",
+                "asterix.063_060_ADS": "1",
+                "asterix.063_060_MLT": "0",
+                "asterix.FX": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x08, 0x02],
+            "asterix.063_060",
+            {
+                "asterix.063_060_CON": "0",
+                "asterix.063_060_PSR": "0",
+                "asterix.063_060_SSR": "0",
+                "asterix.063_060_MDS": "0",
+                "asterix.063_060_ADS": "0",
+                "asterix.063_060_MLT": "1",
+                "asterix.FX": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x08, 0x01, 0x80],
+            "asterix.063_060",
+            {
+                "asterix.063_060_CON": "0",
+                "asterix.063_060_PSR": "0",
+                "asterix.063_060_SSR": "0",
+                "asterix.063_060_MDS": "0",
+                "asterix.063_060_ADS": "0",
+                "asterix.063_060_MLT": "0",
+                "asterix.063_060_OPS": "1",
+                "asterix.063_060_ODP": "0",
+                "asterix.063_060_OXT": "0",
+                "asterix.063_060_MSC": "0",
+                "asterix.063_060_TSV": "0",
+                "asterix.063_060_NPW": "0",
+                "asterix.FX": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x08, 0x01, 0x40],
+            "asterix.063_060",
+            {
+                "asterix.063_060_CON": "0",
+                "asterix.063_060_PSR": "0",
+                "asterix.063_060_SSR": "0",
+                "asterix.063_060_MDS": "0",
+                "asterix.063_060_ADS": "0",
+                "asterix.063_060_MLT": "0",
+                "asterix.063_060_OPS": "0",
+                "asterix.063_060_ODP": "1",
+                "asterix.063_060_OXT": "0",
+                "asterix.063_060_MSC": "0",
+                "asterix.063_060_TSV": "0",
+                "asterix.063_060_NPW": "0",
+                "asterix.FX": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x08, 0x01, 0x20],
+            "asterix.063_060",
+            {
+                "asterix.063_060_CON": "0",
+                "asterix.063_060_PSR": "0",
+                "asterix.063_060_SSR": "0",
+                "asterix.063_060_MDS": "0",
+                "asterix.063_060_ADS": "0",
+                "asterix.063_060_MLT": "0",
+                "asterix.063_060_OPS": "0",
+                "asterix.063_060_ODP": "0",
+                "asterix.063_060_OXT": "1",
+                "asterix.063_060_MSC": "0",
+                "asterix.063_060_TSV": "0",
+                "asterix.063_060_NPW": "0",
+                "asterix.FX": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x08, 0x01, 0x10],
+            "asterix.063_060",
+            {
+                "asterix.063_060_CON": "0",
+                "asterix.063_060_PSR": "0",
+                "asterix.063_060_SSR": "0",
+                "asterix.063_060_MDS": "0",
+                "asterix.063_060_ADS": "0",
+                "asterix.063_060_MLT": "0",
+                "asterix.063_060_OPS": "0",
+                "asterix.063_060_ODP": "0",
+                "asterix.063_060_OXT": "0",
+                "asterix.063_060_MSC": "1",
+                "asterix.063_060_TSV": "0",
+                "asterix.063_060_NPW": "0",
+                "asterix.FX": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x08, 0x01, 0x08],
+            "asterix.063_060",
+            {
+                "asterix.063_060_CON": "0",
+                "asterix.063_060_PSR": "0",
+                "asterix.063_060_SSR": "0",
+                "asterix.063_060_MDS": "0",
+                "asterix.063_060_ADS": "0",
+                "asterix.063_060_MLT": "0",
+                "asterix.063_060_OPS": "0",
+                "asterix.063_060_ODP": "0",
+                "asterix.063_060_OXT": "0",
+                "asterix.063_060_MSC": "0",
+                "asterix.063_060_TSV": "1",
+                "asterix.063_060_NPW": "0",
+                "asterix.FX": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x08, 0x01, 0x04],
+            "asterix.063_060",
+            {
+                "asterix.063_060_CON": "0",
+                "asterix.063_060_PSR": "0",
+                "asterix.063_060_SSR": "0",
+                "asterix.063_060_MDS": "0",
+                "asterix.063_060_ADS": "0",
+                "asterix.063_060_MLT": "0",
+                "asterix.063_060_OPS": "0",
+                "asterix.063_060_ODP": "0",
+                "asterix.063_060_OXT": "0",
+                "asterix.063_060_MSC": "0",
+                "asterix.063_060_TSV": "0",
+                "asterix.063_060_NPW": "1",
+                "asterix.FX": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x04, 0xff, 0xff],
+            "asterix.063_070",
+            {
+                "asterix.063_070_TSB": "65535"
+            }
+        )
+        validator.add_dissection(
+            [0x02, 0x7f, 0xff, 0x00, 0x00],
+            "asterix.063_080",
+            {
+                "asterix.063_080_SRG": "0.32767",
+                "asterix.063_080_SRB": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x02, 0x80, 0x00, 0x00, 0x00],
+            "asterix.063_080",
+            {
+                "asterix.063_080_SRG": "-0.32768",
+                "asterix.063_080_SRB": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x02, 0x00, 0x00, 0x7f, 0xff],
+            "asterix.063_080",
+            {
+                "asterix.063_080_SRG": "0",
+                "asterix.063_080_SRB": "255.9921875"
+            }
+        )
+        validator.add_dissection(
+            [0x02, 0x00, 0x00, 0x80, 0x00],
+            "asterix.063_080",
+            {
+                "asterix.063_080_SRG": "0",
+                "asterix.063_080_SRB": "-256"
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x80, 0x7f, 0xff],
+            "asterix.063_081",
+            {
+                "asterix.063_081_SAB": "179.994506835938"
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x80, 0x80, 0x00],
+            "asterix.063_081",
+            {
+                "asterix.063_081_SAB": "-180"
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x40, 0x7f, 0xff, 0x00, 0x00],
+            "asterix.063_090",
+            {
+                "asterix.063_090_PRG": "0.32767",
+                "asterix.063_090_PRB": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x40,  0x80, 0x00, 0x00, 0x00],
+            "asterix.063_090",
+            {
+                "asterix.063_090_PRG": "-0.32768",
+                "asterix.063_090_PRB": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x40, 0x00, 0x00, 0x7f, 0xff],
+            "asterix.063_090",
+            {
+                "asterix.063_090_PRG": "0",
+                "asterix.063_090_PRB": "255.9921875"
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x40, 0x00, 0x00, 0x80, 0x00],
+            "asterix.063_090",
+            {
+                "asterix.063_090_PRG": "0",
+                "asterix.063_090_PRB": "-256"
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x20, 0x7f, 0xff],
+            "asterix.063_091",
+            {
+                "asterix.063_091_PAB": "179.994506835938"
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x20, 0x80, 0x00],
+            "asterix.063_091",
+            {
+                "asterix.063_091_PAB": "-180"
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x10, 0x7f, 0xff],
+            "asterix.063_092",
+            {
+                "asterix.063_092_PEB": "179.994506835938"
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x10, 0x80, 0x00],
+            "asterix.063_092",
+            {
+                "asterix.063_092_PEB": "-180"
+            }
+        )
+
+        validator.check_dissections()
+
+    def test_undefined_value_handling(self, asterix_validator):
+        '''verifies that the dissector can dissect undefined field values by
+        setting the maximum value of bits or by setting all undefined bits'''
+
+        validator = asterix_validator(63)
+
+        validator.add_dissection(
+            [0x01, 0x08],
+            "asterix.spare",
+            ""
+        )
+        validator.add_dissection(
+            [0x01, 0x04, 0x02, 0x00],
+            "asterix.063_RE",
+            {
+                "asterix.re_field_len": "2",
+                "asterix.fspec": ""
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x04, 0x10, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88,
+             0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff],
+            "asterix.063_RE",
+            {
+                "asterix.fspec": "",
+                "asterix.re_field_len": "16"
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x02, 0x01],
+            "asterix.063_SP",
+            ""
+        )
+        validator.add_dissection(
+            [0x01, 0x02, 0x10, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88,
+             0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff],
+            "asterix.063_SP",
+            ""
+        )
+
+        validator.check_dissections()
+
+
+@fixtures.mark_usefixtures('test_env')
+@fixtures.uses_fixtures
+class case_category_065(subprocesstest.SubprocessTestCase):
+    '''
+    Unittest case for ASTERIX Category 065
+
+    Online specification:
+    https://www.eurocontrol.int/publications/cat065-surveillance-data-processing-system-sdps-service-status-messages-part-15
+    https://www.eurocontrol.int/publications/cat065-coding-rules-reserved-expansion-field-part-15-appendix
+
+    Part 15 Category 65 (1.4)
+    SDPS Service Status Reports
+
+    Standard User Application Profile
+
+    FRN Data Item Information                                Length
+     1  I065/010  Data Source Identifier                      2
+     2  I065/000  Message Type                                1
+     3  I065/015  Service Identification                      1
+     4  I065/030  Time of Message                             3
+     5  I065/020  Batch Number                                1
+     6  I065/040  SDPS Configuration and Status               1
+     7  I065/050  Service Status Report                       1
+    FX   -        Field extension indicator                   -
+     8   -        Spare                                       -
+     9   -        Spare                                       -
+    10   -        Spare                                       -
+    11   -        Spare                                       -
+    12   -        Spare                                       -
+    13  RE        Reserved Expansion Field                    1+1+
+    14  SP        Special Purpose Field                       1+1+
+    FX   -        Field extension indicator                   -
+    '''
+
+    maxDiff = None
+
+    def test_for_fields(self, asterix_validator):
+        '''verifies existence of all fields and their maximum value'''
+
+        validator = asterix_validator(65)
+
+        validator.add_dissection(
+            [0x80, 0xff, 0x00],
+            "asterix.065_010",
+            {
+                "asterix.SAC": "255",
+                "asterix.SIC": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x80, 0x00, 0xff],
+            "asterix.065_010",
+            {
+                "asterix.SAC": "0",
+                "asterix.SIC": "255"
+            }
+        )
+        validator.add_dissection(
+            [0x40, 0x03],
+            "asterix.065_000",
+            {
+                "asterix.065_000_MT": "3"
+            }
+        )
+        validator.add_dissection(
+            [0x20, 0xff],
+            "asterix.065_015",
+            {
+                "asterix.065_015_SI": "255"
+            }
+        )
+        validator.add_dissection(
+            [0x10, 0xa8, 0xbf, 0xff],
+            "asterix.065_030",
+            {
+                "asterix.TOD": "86399.9921875"
+            }
+        )
+        validator.add_dissection(
+            [0x08, 0xff],
+            "asterix.065_020",
+            {
+                "asterix.065_020_BTN": "255"
+            }
+        )
+        validator.add_dissection(
+            [0x04, 0xc0],
+            "asterix.065_040",
+            {
+                "asterix.065_040_NOGO": "3",
+                "asterix.065_040_OVL": "0",
+                "asterix.065_040_TSV": "0",
+                "asterix.065_040_PSS": "0",
+                "asterix.065_040_STTN": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x04, 0x20],
+            "asterix.065_040",
+            {
+                "asterix.065_040_NOGO": "0",
+                "asterix.065_040_OVL": "1",
+                "asterix.065_040_TSV": "0",
+                "asterix.065_040_PSS": "0",
+                "asterix.065_040_STTN": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x04, 0x10],
+            "asterix.065_040",
+            {
+                "asterix.065_040_NOGO": "0",
+                "asterix.065_040_OVL": "0",
+                "asterix.065_040_TSV": "1",
+                "asterix.065_040_PSS": "0",
+                "asterix.065_040_STTN": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x04, 0x0c],
+            "asterix.065_040",
+            {
+                "asterix.065_040_NOGO": "0",
+                "asterix.065_040_OVL": "0",
+                "asterix.065_040_TSV": "0",
+                "asterix.065_040_PSS": "3",
+                "asterix.065_040_STTN": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x04, 0x02],
+            "asterix.065_040",
+            {
+                "asterix.065_040_NOGO": "0",
+                "asterix.065_040_OVL": "0",
+                "asterix.065_040_TSV": "0",
+                "asterix.065_040_PSS": "0",
+                "asterix.065_040_STTN": "1"
+            }
+        )
+        validator.add_dissection(
+            [0x02, 0xff],
+            "asterix.065_050",
+            {
+                "asterix.065_050_REP": "255"
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x04, 0x02, 0x00],
+            "asterix.065_RE",
+            {
+                "asterix.re_field_len": "2",
+                "asterix.fspec": ""
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x04, 0x0a, 0x80, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+             0x00],
+            "asterix.065_RE",
+            {
+                "asterix.re_field_len": "10",
+                "asterix.fspec": "",
+                "asterix.065_RE_SRP":
+                {
+                    "asterix.065_RE_SRP_Latitude": "90",
+                    "asterix.065_RE_SRP_Longitude": "0"
+                }
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x04, 0x0a, 0x80, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+             0x00],
+            "asterix.065_RE",
+            {
+                "asterix.re_field_len": "10",
+                "asterix.fspec": "",
+                "asterix.065_RE_SRP":
+                {
+                    "asterix.065_RE_SRP_Latitude": "-90",
+                    "asterix.065_RE_SRP_Longitude": "0"
+                }
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x04, 0x0a, 0x80, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00,
+             0x00],
+            "asterix.065_RE",
+            {
+                "asterix.re_field_len": "10",
+                "asterix.fspec": "",
+                "asterix.065_RE_SRP":
+                {
+                    "asterix.065_RE_SRP_Latitude": "0",
+                    "asterix.065_RE_SRP_Longitude": "180"
+                }
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x04, 0x0a, 0x80, 0x00, 0x00, 0x00, 0x00, 0xc0, 0x00, 0x00,
+             0x00],
+            "asterix.065_RE",
+            {
+                "asterix.re_field_len": "10",
+                "asterix.fspec": "",
+                "asterix.065_RE_SRP":
+                {
+                    "asterix.065_RE_SRP_Latitude": "0",
+                    "asterix.065_RE_SRP_Longitude": "-180"
+                }
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x04, 0x04, 0x40, 0xff, 0xfc],
+            "asterix.065_RE",
+            {
+                "asterix.re_field_len": "4",
+                "asterix.fspec": "",
+                "asterix.065_RE_ARL":
+                {
+                    "asterix.065_RE_ARL_ARL": "65532"
+                }
+            }
+        )
+
+        validator.check_dissections()
+
+    def test_undefined_value_handling(self, asterix_validator):
+        '''verifies that the dissector can dissect undefined field values by
+        setting the maximum value of bits or by setting all undefined bits'''
+
+        validator = asterix_validator(65)
+
+        validator.add_dissection(
+            [0x40, 0xff],
+            "asterix.065_000",
+            {
+                "asterix.065_000_MT": "255"
+            }
+        )
+        validator.add_dissection(
+            [0x10, 0xff, 0xff, 0xff],
+            "asterix.065_030",
+            {
+                "asterix.TOD": "131071.9921875"
+            }
+        )
+        validator.add_dissection(
+            [0x04, 0x01],
+            "asterix.065_040",
+            {
+                "asterix.065_040_NOGO": "0",
+                "asterix.065_040_OVL": "0",
+                "asterix.065_040_TSV": "0",
+                "asterix.065_040_PSS": "0",
+                "asterix.065_040_STTN": "0"
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x80],
+            "asterix.spare",
+            ""
+        )
+        validator.add_dissection(
+            [0x01, 0x40],
+            "asterix.spare",
+            ""
+        )
+        validator.add_dissection(
+            [0x01, 0x20],
+            "asterix.spare",
+            ""
+        )
+        validator.add_dissection(
+            [0x01, 0x10],
+            "asterix.spare",
+            ""
+        )
+        validator.add_dissection(
+            [0x01, 0x08],
+            "asterix.spare",
+            ""
+        )
+        validator.add_dissection(
+            [0x01, 0x04, 0x0a, 0x80, 0x7f, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00,
+             0x00],
+            "asterix.065_RE",
+            {
+                "asterix.re_field_len": "10",
+                "asterix.fspec": "",
+                "asterix.065_RE_SRP":
+                {
+                    "asterix.065_RE_SRP_Latitude": "359.999999832362",
+                    "asterix.065_RE_SRP_Longitude": "0"
+                }
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x04, 0x0a, 0x80, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+             0x00],
+            "asterix.065_RE",
+            {
+                "asterix.re_field_len": "10",
+                "asterix.fspec": "",
+                "asterix.065_RE_SRP":
+                {
+                    "asterix.065_RE_SRP_Latitude": "-360",
+                    "asterix.065_RE_SRP_Longitude": "0"
+                }
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x04, 0x0a, 0x80, 0x00, 0x00, 0x00, 0x00, 0x7f, 0xff, 0xff,
+             0xff],
+            "asterix.065_RE",
+            {
+                "asterix.re_field_len": "10",
+                "asterix.fspec": "",
+                "asterix.065_RE_SRP":
+                {
+                    "asterix.065_RE_SRP_Latitude": "0",
+                    "asterix.065_RE_SRP_Longitude": "359.999999832362"
+                }
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x04, 0x0a, 0x80, 0x00, 0x00, 0x00, 0x00, 0x80, 0x00, 0x00,
+             0x00],
+            "asterix.065_RE",
+            {
+                "asterix.re_field_len": "10",
+                "asterix.fspec": "",
+                "asterix.065_RE_SRP":
+                {
+                    "asterix.065_RE_SRP_Latitude": "0",
+                    "asterix.065_RE_SRP_Longitude": "-360"
+                }
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x04, 0x04, 0x40, 0xff, 0xff],
+            "asterix.065_RE",
+            {
+                "asterix.re_field_len": "4",
+                "asterix.fspec": "",
+                "asterix.065_RE_ARL":
+                {
+                    "asterix.065_RE_ARL_ARL": "65535"
+                }
+            }
+        )
+        validator.add_dissection(
+            [0x01, 0x02, 0x01],
+            "asterix.065_SP",
+            ""
+        )
+        validator.add_dissection(
+            [0x01, 0x02, 0x10, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88,
+             0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff],
+            "asterix.065_SP",
+            ""
+        )
+
+        validator.check_dissections()