ISO/IEC TR 13233:1995
(Main)Information technology — Interpretation of accreditation requirements in ISO/IEC Guide 25 — Accreditation of Information Technology and Telecommunications testing laboratories for software and protocol testing services
Information technology — Interpretation of accreditation requirements in ISO/IEC Guide 25 — Accreditation of Information Technology and Telecommunications testing laboratories for software and protocol testing services
Provides guidance for assessors and testing laboratories on the specific interpretation of the accreditation requirements applicable to testing (including validation of means of testing and test tools) in the field of information Technology and Telecommunications (IT&T), specifically in relation to software and protocol testing services. Does not apply to the accreditation of inspection, certification and quality assurance assessment activities.
Technologies de l'information — Interprétation des exigences d'accréditation dans le Guide ISO/CEI 25 — Accréditation des laboratoires d'essais pour les technologies de l'information et les télécommunications pour logiciels et services de contrôle de protocole
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TECHNICAL ISO/IEC
TR 13233
REPORT
First edition
1995-12-15
Information technology - Interpretation
of accreditation requirements in ISO/IEC
Accreditation of Information
Guide 25 -
Technology and Telecommunications
testing laboratories for software and
protocol testing services
In terprg ta tion des exigences d’acckdita tion
Technologies de I ‘information -
1 dans le Guide ISO/CEI 25 - Acckditation des laboratoires d’essais pour /es
technologies de I’information et /es t&?communications pour logiciels et
services de con tr6le de protocole
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ISOAEC TR 13233: 1995 (E)
Page
Contents
................................... iv
Foreword
.................................
v
introduction.
.................... I
0 Scope of this Technical Report
.................................. 3
1 Scope
3
...............................
2 References
3
...............................
3 Definitions.
.................... 4
4 Organization and management
........... 4
Use of commercial reference implementations
4.A
5
.........................
4.B Proficiency testing.
...................
6
5 Quality system, audit and review
7
......................
5.A Maintenance procedures
........... 8
Documentation of MOT and test tool validation
5.B
............................... 9
6 Personnel.
...................... 9
6.A Maintaining Competence
.................
.I0
7 Accommodation and environment
................... .I 0
7.A Separation of data partitions
...................
.I 1
7.B Identification of environment
.................. .I2
7.C Remote testing over a network
.......... .I3
7.0 Checking the testing or validation environment
................. .I4
8 Equipment and reference materials
......... .I4
8.A Means of testing and test tool validation records
.... .I5
8.8 Procedures for handling errors in the MOT and test tools
................. .16
8.C MOT and test tool maintenance.
.................... .I 7
8.D Identification of equipment
9 Validation and traceability (Measurement traceability and calibration)
. . 17
.m .m. .
..... ..........
...................... .I 7
9.A The validation concept
0 ISO/I EC 1995
All rights reserved. Unless otherwise specified, no part of this publication may be
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photocopying and microfilm, without permission in writing from the publisher.
ISO/IEC Copyright Office l Case Postale 56 l CH-1211 Geneve 20 l Switzerland
Printed in Switzerland
ii
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0 ISOAEC ISOAEC TR 13233: 1995 (E)
...................
-20
9-B MOT and test tool validation
................
9-B-l Use of reference implementations -21
....... -24
9-C Validation of test software in the system under test
............................
-25
9-D Traceability
.................... -25
9.D.l Traceability of validations
....................
-26
9.D.2 Traceability of test results
.................... -26
9.D.3 Traceability of test cases
.....................
-27
9.0.4 Traceability of test tools
........................ -27
9-E Confidence checks
.... -28
9-F Calibration of test tools used to measure software timers
........... .28
10 Test methods (Calibration and test methods)
...................
-29
10-A Introduction to test methods
................. -29
10-B Repeatability and reproducibility
............... -32
10-C Internationally agreed test methods.
....................
-33
10-D Measurement uncertainty.
....................
10-E Configuration management -34
. .34
I I Handling of test items (Handling of calibration and test items).
.... -35
11 .A Protection against viruses and other agents of corruption
...............................
.36
12 Records.
\
.............. -36
12-A Confidentiality and integrity of records
....................... .37
13 Certificates and reports
............................
-38
13-A Objectivity.
............... -41
13.B Clear and unambiguous test reports
.............. .42
14 Sub-contracting of calibration or testing
..............
15 Outside support services and supplies. .42
........ -42
15-A Provision of MOT and test tool validation services
..............................
16 Complaints .42
Annexes
..........................
A .43
Glossary of Terms
............................. .52
B Bibliography
.
iil
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0 ISOAEC
ISOIIEC TR 13233: 1995 (E)
Foreword
IS0 (the International Organization for Standardization) and IEC (the In-
ternational Electrotechnical Commission) form the specialized system for
worldwide standardization. National bodies that are members of IS0 or IEC
participate in the development of International Standards through technical
committees established by the respective organization to deal with
particular fields of technical activity. IS0 and IEC technical committees
collaborate in fields of mutual interest. Other international organizations,
governmental and non-governmental, in liaison with IS0 and IEC, also take
part in the work. ’
In the field of information technology, IS0 and IEC have established a joint
technical committee, lSO/IEC JTC 1.
The main task of technical committees is to prepare International Standards,
but in exceptional circumstances a technical committee may propose the
publication of a Technical Report of one of the following types:
- type 1, when the required support cannot be obtained for the pub-
lication of an International Standard, despite repeated efforts;
- type 2, when the subject is still under technical development or where
for any other reason there is the future but not immediate possibility of
an agreement on an International Standard;
- type 3, when a technical committee has collected data of a different
kind from that which is normally published as an International
Standard (“state of the art”, for example).
Technical Reports of types 1 and 2 are subject to review within three years
of publication, to decide whether they can be transformed into International
Standards. Technical Reports of type 3 do not necessarily have to be
reviewed until the data they provide are considered to be no longer valid or
useful.
lSO/IEC TR 13233, which is a Technical Report of type 3, was prepared by
Technical Committee lSO/IEC JTC 1, information technology.
iv
---------------------- Page: 4 ----------------------
0 ISOAEC ISOAEC TR 13233: 1995 (E)
Introduction
The general requirements for accreditation of laboratories are specified in ISO/
IEC Guide 25. The requirements are designed to apply to all types of objective
testing and therefore need to be interpreted in respect of the type of testing
concerned and the techniques involved.
This document is a Technical Report Type 3, which provides the interpretation
of the requirements for testing laboratories operating in the Information
Technology and Telecommunications (IT&T) field. It clarifies the criteria an
\
accreditation body should adopt when assessing the technical competence of
IT&T testing laboratories to provide the relevant testing services. The adoption
of a common international interpretation will ensure that the accreditation
services are consistent and harmonised on a world-wide basis. Additionally, it
will increase the confidence in the services provided by accredited testing
laboratories and facilitate the process of mutual recognition and international
harmonisation. Thus, the widest possible acceptance of this interpretation is
being sought.
The body of this Technical Report is divided into two columns: the left column
giving the relevant requirements from ISO/IEC Guide 25, the interpretation of
those to be used in assessments, and relevant definitions, ordered according
to the relevant clauses of ISO/IEC Guide 25; and the right column giving
associated guidance and examples to help readers to understand how to apply
the interpretations in specific subject areas (e.g. OSI testing, product data
exchange testing or compiler testing).
The interpretive text uses the same clause numbering as ISO/IEC Guide 25.
Each clause contains a summary of the ISO/IEC Guide 25 subclauses,
indicating whether interpretive text is provided or whether the subclause is
referenced in the interpretive text. References to interpretive text subclauses
are also provided as appropriate. This summary is followed by any interpretive
text required, each subclause of which is designated by the clause number
followed by a capital letter, assigned in alphabetical order (e.g. the interpretive
text for clause 4 may be found in subclauses 4.A and 4.B, etc.).
A glossary of terms is provided in Annex A, giving the definitions of terms as
used in this Technical Report, where possible based upon definitions given in
International Standards, ISO/IEC Guides or other similar documents. A
bibliography is provided in Annex B.
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TECHNICAL REPORT@ ISOAEC ISOAEC TR 13233: 1995 (E)
Information technology - Interpretation of accreditation
requirements in ISOAEC Guide 25 - Accreditation of
Information Technology and Telecommunications
testing laboratories for software and protocol testing
services
0 Scope of this Technical Report
0.1 This Technical Report provides guidance for assessors and testing laboratories on the specific
interpretation of the accreditation requirements applicable to testing (including validation of means of testing
and test tools) in the field of Information Technology and Telecommunications (IT&T), specifically in relation
to software and protocol testing services. This Technical Report does not apply to the accreditation of
inspection, certification and quality assurance assessment activities.
0.2 However, ISOAEC Guide 25 and any other applicable ISOAEC Guides take precedence over the
interpretation given in this Technical Report.
0.3 This Technical Report covers the use by accredited testing laboratories of services for the validation
of means of testing (MOT) and test tools, and also applies to the possibility of accreditation of MOT and test
tool validation services, because such a validation service is just a specialised form of software testing
service.
NOTE - In many areas of IT&T, it may be impractical to require the use of accredited MOT and test tool validation
services, both economically and given the state of the art in the particular area. It is important to recognise that the mere
existence of an applicable accredited validation service does not mean that relevant accredited testing laboratories
should be required to use it, as other suitable forms of MOT and test tool validation may exist. Other factors outside the
scope of this Technical Report will determine if and when use of accredited MOT and test tool validation services might
become a requirement.
0.4 The aim is that it should be generally applicable across the whole software and protocol testing area,
whenever accreditation to ISOAEC Guide 25 applies. However, it does not cover all the requirements of
ISOAEC Guide 25. Laboratories are reminded that, in order to obtain and maintain accreditation, they shall
fully comply with ISOAEC Guide 25. This Technical Report interprets the ISOAEC Guide 25 requirements
in this field; it does not in any way replace them. Furthermore, there may be other interpretations of ISOAEC
Guide 25 which are sector independent, maybe focusing on just one aspect of accreditation, in which case
such generally applicable interpretations continue to apply, and are not replaced by this interpretation.
0.5 This interpretation applies to conformance testing and other types of objective testing of software.
Specific guidance is provided for OSI, telecommunications protocols, product data exchange (as defined by
IS0 TCI 84), graphics, POSIX and compilers. The testing of physical properties of hardware is outside the
scope of this interpretation, but may be covered elsewhere. Evaluation of systems and products, as in IT&T
Security and Software Quality evaluation (ISOAEC 9126), is also not included in the scope of this
interpretation. Safety-critical software and general application software testing are also not included in this
edition.
0.6 Specific text is given in this interpretation for conformance testing. However, the general
interpretations given in this Technical Report are applicable to all types of objective testing, including
measuring some objective aspects of performance (e.g. as in compiler testing for some programming
1
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ISOAEC TR 13233: 1995 (E) 0 ISOAEC
languages) and types of testing that are particular to a single area within the IT&T field. Analysis by the test
operator in order to produce the final result for a test case, in accordance with procedures that lead to
objective results, is included in this interpretation.
NOTES
1 Normally, each i ndividual test case in a test suite (set of test cases) will be desig ned to yield a test ict, that is a
statement of pass fail or inconclusive.
2 Conformance testing involves testing the implementation against the conformance requirements specified in one or
more standards (or other normative specifications). The standards against which implementations are tested for
conformance will often be International Standards, although they may be ITU-T Recommendations, regional or national
standards, or even a manufacturer’s specification when the manufacturer is seeking independent confirmation that the
implementation conforms.
3 The test cases to be used in conformance testing may also be standardized, but (in the fields of software and protocol
testing) are usually distinct from the standards which specify the requirements to which implementations are supposed
to conform.
4 Each test verdict should be made with respect to the purpose of the test case and the requirements of the relevant
standard(s). Optionally, a particular test suite may specify various classes of pass, fail or inconclusive test verdict (e.g.
fail class 1: severe non-conformance; fail class 2: invalid behaviour but satisfied the test purpose), but this does not alter
the general points about test verdicts.
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0 ISOAEC
ISO/IEC TR 13233: 1995 (E)
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in this As far as possible standard definitions are used. Even
Additional definitions are required
where this is not possible, the intent is not to standardize
Technical Report; for these, see Annex A.
new definitions but rather to explain the meaning of terms
as used in this Technical Report.
The complexity of MOT and test tools varies from one area
The distinction between a means of testing (MOT)
of software testing to another. For example, in OSI and
and a test tool is important in this interpretation.
telecommunications protocol testing, each MOT is a very
For the purposes of this Technical Report, a
complex hardware and software system which plays a
means of testing is hardware and/or software,
major part in the testing, whereas in compiler testing, in
addition to the test suite (of programs) itself, only a few
and the procedures for its use, including the
ancillary software test tools are used.
executable test suite itself, used to carry out the
testing required. In an accredited testing service,
the MOT is run under the control of the testing
laboratory.
For the purposes of this Technical Report, a test
tool is hardware and/or software, excluding the
test suite itself, used to carry out or assist in
carrying out the testing required. It may be
concerned with running the test cases, analysing
the results, or both. Those concerned with running
the test cases may also involve parameterization,
selection or even generation of the test cases.
4 Organization and management
4.1 No IT&T specific interpretation is required
for subclause 4.1 of ISO/IEC Guide 25.
4.2 ISO/IEC Guide 25 subclause 4.2 is
interpreted in 4.A and 4.B.
4.A Use of commercial reference implementations
In ISO/IEC Guide 25, subclause 4.2, requires the
following:
‘The laboratory shall . . .
b) have arrangements to ensure its personnel
are free from any commercial, financial and
other pressures which might adversely affect
the quality of their work;
c) be organized in such a way that confidence
in its independence of judgement and integrity
is maintained at all times;
In IT&T, these requirements shall be interpreted
as follows.
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0 ISOAEC ISO/IEC TR 13233: 1995 (E)
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Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.