JPH02238545A - Protocol testing device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a protocol testing device for testing the conformance of a protocol implemented in a communication terminal or the like to a standard.

(Conventional technology) Tests to verify the conformance of communication protocols implemented in communication terminals, etc., to standards are performed by connecting the protocol test equipment that controls and monitors the test with the system under test via a communication line, and from the protocol test equipment to the system under test. This is performed by monitoring the response from the system under test to the transmitted test data.

For this reason, the protocol testing device requires a protocol processing unit that has the same functions as the protocol under test and is compliant with the standards, and a lower protocol processing unit that is a lower protocol entity than the protocol processing unit. In addition, in order to conduct detailed tests, in addition to test data that has normal protocol control information, it is necessary to send various test data such as abnormal protocol control information or timing-shifted data, and respond accordingly. It is necessary to see the reaction of the system under test. Here, the normal test is
The test is performed according to a test scenario that describes the sequence of test data sent and received between the protocol test equipment and the system under test.

On the other hand, a general protocol processing section installed in a communication terminal, etc., only needs the function of performing normal processing, and does not have the function of generating and sending out data having abnormal protocol control information. For this reason, either a special protocol processing section that can generate and send data with abnormal protocol control information should be prepared for the protocol processing section in the protocol test equipment, or the protocol processing section should be set to normal system. Completely divided into abnormal systems,
Normal systems were processed by the protocol processing section, and test data for abnormal systems was created manually.

Note that a detailed explanation of protocols in general is given in pages 159 to 166 of the ``Data Communication Handbook'' edited by the Institute of Electronics and Communication Engineers and published by Ohmsha in January 1980.

[Problem to be solved by the invention]

As mentioned above, in conventional protocol test equipment, the protocol processing unit is not a general protocol processing unit that can be used in communication terminals, etc., but a special protocol processing unit that can generate and send test data with abnormal protocol control information. If a general protocol processor was used, it would be necessary to completely separate the test procedures into normal and abnormal systems.

For this reason, regarding the implementation of special protocol processing units,
The drawback is that in order to add an abnormality processing function in addition to the normal processing function, a new complex processing function must be created. It is not possible to execute test procedures that include abnormal systems, and furthermore, for abnormal systems, test data to be transmitted must be created independently, making it impossible to conduct detailed tests in accordance with the test scenario.

An object of the present invention is to provide a protocol testing device that can easily create test scenarios in which normal and abnormal systems are mixed, and that can perform detailed tests by eliminating the above-mentioned drawbacks.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a protocol testing device with a disturbance generating section for performing abnormality processing between the protocol processing section and the lower protocol processing section, This disturbance generation section is equipped with a function to perform abnormality processing on test data from the protocol processing section and communication control section.
For this purpose, there is a storage unit that is given and accumulates abnormality processing information that includes the conditions for identifying the test data to be subjected to abnormality processing and the details of the abnormality processing, and a storage unit that stores the abnormality processing information that is passed from the protocol processing unit and the lower protocol processing unit. a comparison monitoring unit that monitors the test data that is generated and determines whether or not to perform abnormality processing by comparing it with the conditions for performing abnormality processing; an abnormality processing unit that performs abnormality processing on the test data; After processing, in preparation for the next process, it is equipped with a change unit that extracts the next abnormality processing information from the storage unit and transfers it to the comparison monitoring unit and the abnormality processing unit, and also updates all of the information in the test scenario to be tested. The details of the abnormality processing and the conditions for carrying out the processing are passed from the test execution management section to the storage section before the test is conducted.

[Effect]

When conducting a test according to a test scenario, the protocol processing section normally processes the test data sent from the test execution management section, creates test data with normal protocol control information, and then sends this test data to the disturbance generation section. The disturbance generation unit monitors the test data, and if the data matches the conditions in the abnormality processing information received before the test, performs abnormality processing and detects whether the data has abnormal protocol control information or The test data with a timing shift is passed to the lower protocol processing unit and sent to the system under test.

Furthermore, regarding the test data received from the system under test, it is possible to replace the test data that has been normally processed by the lower protocol processing section with abnormal test data by passing it through the disturbance generating section. Therefore, the protocol processing section can be one that has only the general normal processing functions implemented in normal communication terminals, and the test execution management section must prepare the necessary conditions for abnormal processing in the disturbance generation section before the test. In addition to transmitting the data all at once to the disturbance generating section, the following conditions are extracted for each abnormality process and compared with the test data. Detailed and continuous tests can be easily performed by mixing systems.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a module configuration diagram showing a protocol testing device as an embodiment of the present invention. The protocol test device 1 is connected via a communication line 30 to a system under test 2 in which a protocol under test is implemented.

The protocol test device 1 includes a user interface 11.
, a test scenario creation unit 12 that creates a test scenario that describes a test sequence and conditions necessary for determining whether or not to perform abnormality handling, and a test execution management unit that controls test execution based on the test scenario. Functional modules such as a section 13 and a test result analysis section 14 that analyze test results based on test log information are installed. The test scenario creation unit 12 includes a test scenario file 15 that stores created test scenarios, and a condition file 16 that stores conditions necessary for determining whether or not to perform abnormal processing in the test scenario. is provided. Also, under the test execution management section 13, there is a protocol processing section 17 that has the same function as the protocol under test and only performs normal protocol processing, and a protocol processing section 17 that processes the test data sent from the protocol processing section 17 depending on the conditions. A disturbance generating section 18 that performs or does not perform abnormality processing, and a lower protocol processing section 19 composed of protocol entities lower than the protocol under test are each connected to an interface 26.
27.28. Further, an interface 29 is provided between the test execution management section 13 and the disturbance generation section 18 for transferring abnormality processing information including conditions for determining whether abnormality processing should be performed and the contents of the abnormality processing. There is.

Note that the relationship among the test execution management section 13, protocol processing section 17, disturbance generation section 18, and lower protocol processing section 19 is
Explaining the layered model of SX5003 (basic reference model for interconnection between open systems), the protocol processing unit 17 and disturbance generation unit 18 are entities at the same level as the protocol under test, and the lower protocol processing unit 19 is an entity at a lower level than the protocol under test. This is a protocol entity, and the test execution management unit 13 includes a protocol entity higher than the protocol under test.

The logging unit 20 collects log information necessary for analyzing test results. This log information includes test sequence information actually executed based on the test scenario by the test execution management unit 13, information when the disturbance generation unit 18 performs abnormal processing on test data and replaces it with an abnormal system,
The logging unit 20 includes a log information file 2I for storing collected log information, which includes test data transmitted and received between the protocol test device and the system under test.

FIG. 2 is a detailed configuration diagram of the disturbance generating section 18 of FIG. 1. In FIG. 2, the disturbance generation section 18 transfers the abnormality processing information from the condition file 16 to the test execution management section 13.
The test data (transmission data) sent from the storage unit 22 assigned and accumulated by the protocol processing unit 17 or the test data sent from the lower protocol processing unit 19 (the system under test 2 for transmission data) A comparison monitoring unit 23 monitors the received data (received data received as a response) and compares it with the conditions included in the abnormality processing information in the storage unit 22 to determine whether or not to perform abnormality processing. an abnormality processing unit 24 that performs abnormality processing on the test data according to instructions from the comparison monitoring unit 23 and sends it to the lower protocol processing unit 19 or the protocol processing unit 17;
When the abnormality processing is completed, the change section 25 extracts the next abnormality processing information from the storage section 22 and notifies it to the comparison monitoring section 23 and the abnormality processing section 24. is the test data (transmission data) sent from the protocol processing unit 17, the test data sent from the lower protocol processing unit 19 (response data to the transmission data from the system under test 2), and the lower protocol processing. The test data (transmission data) sent to the section 19, the test data (response data from the system under test 2) sent to the protocol processing section 17, and furthermore, when the abnormality processing section 24 performs abnormal processing, the It has a function of notifying the logging unit 20 of the contents of abnormal processing.

FIG. 3 is a frame configuration diagram of abnormality processing information created by the test scenario creation section 12. The abnormality processing information frame 3 includes frame information 31 including frame identification, frame length, etc., judgment conditions 32 for monitoring test data and determining whether or not to perform abnormality processing, and information to be applied to the test data. It is composed of the contents 33 of the abnormality processing and the data 34 necessary for the abnormality processing, and the abnormality processing information for one test scenario is composed of a plurality of sets of frames 3 as necessary.

FIG. 4 is an explanatory diagram showing the frame structure of test data at each interface 26, 27, 28 in the protocol test device when the test data is transmitted from the protocol test device 1 shown in FIG. 1 to the system under test 2. .

FIG. 4(a) shows the frame structure of the test data passing through the interface 26, which is composed of protocol control information 41 higher than the protocol under test and user data 42. (b) is that of the test data passing through the interface 27, in which the test data (a) has been normally processed by the protocol processing unit 17, and the protocol control information 43 of the protocol under test has been added to the frame of the test data (a). This is the frame configuration. (C) is interface 2
8, the test data (b) is abnormally processed by the disturbance generating unit 18, and the protocol control information 43 of the test data (b) is abnormal protocol control information 43'.
has been replaced by

Note that the test data (b) that is not subjected to abnormality processing by the disturbance generating section 18 passes through the interface 28 as is.

Also, 'fI! The test data as response data received from the test system 2 is test data (b) having normal protocol control information 43 at the interface 28, and abnormality processing has been performed on the test data (b) at the disturbance generating unit 18. In this case, the test data (c) at the interface 27 has abnormal protocol control information 43'.

Next, a test procedure in the protocol test device having such a configuration will be explained.

The test conductor activates the test scenario creation unit 12 in advance, creates a test scenario that describes the test sequence, and if the test scenario includes an abnormal system, creates abnormality processing information,
It is stored in the test scenario file 15 and condition file 16. When conducting a test, the test execution management unit 13 is activated and a test scenario for conducting the test is specified. Test execution management department 1
3, the specified test scenario and the corresponding abnormality processing information are stored in the test scenario file 15 and the condition file 1.
6 and the abnormality processing information included in the entire test scenario is collectively transferred to the storage section 22 of the disturbance generation section 18 through the interface 29.

The test execution management unit 13 creates test data (a) to be sent to the system under test 2 according to the test scenario,
It is sent to the protocol processing unit 17 through the interface 26. The protocol processing section 17 performs normal protocol processing on the test data (a), and transfers the test data (b) containing normal protocol control information to the comparison monitoring section 23 in the disturbance generation section 18 through the interface 27.

In the disturbance generation unit 18, the change unit 25 takes out the first abnormality processing information frame 3 from the storage unit 22, and sets the judgment condition 32.
is transferred to the comparison monitoring section 23, and the abnormality processing details 33 and data 34 necessary for the abnormality processing are transferred to the abnormality processing section 24. The comparison monitoring unit 23 uses the judgment condition 32 transferred from the changing unit 25.
and the test data (b) from the protocol processing section 17, and if the condition included in the test data (b) in advance matches the judgment condition 32, the test data is sent to the abnormality processing section. Pass it to 24.

The abnormality processing unit 24 performs abnormality processing on the test data (b) according to the abnormality processing content 33 transferred from the change unit 25, and removes test data (C) with abnormal protocol control information or timing-shifted tests. Data (b)
is generated and transferred to the lower protocol processing unit 19 through the interface 28, and the change unit 25 is notified that the abnormality processing has been performed. Then, in order to deal with the next abnormal process, the changing unit 25 takes out the next abnormal process information frame 3 from the storage unit 22, sends the judgment condition 32 to the comparison monitoring unit 23, and sends the abnormal process contents 33 and data 34 to the abnormal process unit. Transfer to 24.

If the conditions included in the test data (b) transferred to the disturbance generation section 18 in advance do not match the judgment conditions 32, the test data (b) is transferred to the lower protocol processing section 19 as is. The lower protocol processing section 19 performs a lower layer protocol processing than the protocol under test on the test data transferred from the disturbance generation section 18 and sends the data to the system under test 2 .

In this way, abnormality processing can be continuously and arbitrarily applied to the test data transmitted from the protocol test device.

On the other hand, for test data received as response data from the system under test 2, test data (b) obtained by performing protocol processing of a layer lower than the protocol under test in the lower protocol processing unit 19 is sent to the disturbance generation unit 18. The disturbance generation section 18 performs abnormality processing as necessary using the same method as the test data at the time of transmission, and transfers the obtained test data (c) to the protocol processing section 17.

By such a method, test data is continuously transmitted and received between the protocol test device 1 and the system under test 2, and during that time, the interface 26 and the
The test data frame and transmission/reception timing in 8.
Furthermore, the logging section 20 collects the contents of the abnormality processing when the abnormality processing is performed, and accumulates this information in the log file 21.

After the test is conducted, the test result analysis section 14 analyzes the test results based on the log information in the log information file 21.
Determine whether the protocol under test complies with the standard.

[Effects of the Invention] I7 As explained above, according to the present invention, in the protocol testing device, a disturbance generating section is provided between the protocol processing section and the lower protocol processing section, and the discriminating of test data is performed prior to the test execution. By transmitting an abnormality processing information frame consisting of conditions and abnormality processing details to the disturbance generation section, there is no need to prepare a special protocol processing section to generate the abnormality-related test data required for the test. Tests for abnormal systems can be easily performed, and there is no need for communication regarding abnormal handling between the test execution management section and the disturbance generating section during test execution, and test procedures including abnormal systems can be performed easily. It has the advantage of being able to carry out detailed and efficient continuous testing using exactly the same method as for normal systems.

[Brief explanation of drawings]

FIG. 1 is a module configuration diagram showing a protocol test device as an embodiment of the present invention, FIG. 2 is a configuration diagram showing details of the disturbance generating section in FIG. 1, and FIG. 3 is a frame configuration of abnormality processing information. 4 is a frame configuration diagram of test data at each interface in the protocol testing device shown in FIG. 1. Explanation of symbols 1... Protocol test device, 2... System under test, 11... User interface, 12... Test scenario creation section, 13... Test execution management section, 14...
Test result analysis department, 15...Test scenario file, 1
6... Condition file, 17... Protocol processing section,
18... Disturbance generating section, 19... Lower protocol processing section, 20... Logging section, 21... Log information file, 22... Storage section, 23... Comparison monitoring section, 24.
... Abnormality processing section, 25... Change section, 26, 27, 28
．． 29...Interface, 30...Communication line, 3
... Abnormality processing information frame, 32 ... Judgment condition, 3
3... Abnormal processing content, 34... Data, 41.43
...Protocol control information, 42...User data. Agent Patent Attorney Akio Namiki

Claims (1)

[Claims] 1) A system under test that is interconnected via a communication line with a system under test that implements a protocol under test, and transmits and receives test data to and from the system under test according to a test scenario created in advance. In a protocol testing device that tests the conformance of a protocol implemented in a system under test to standards, (a) when a test scenario is specified during test execution, the contents of the abnormality handling and the conditions for performing the abnormality handling are specified. and abnormal processing information, including the above, is read out from the file in accordance with the scenario and transferred to the disturbance generation section, and at the same time, test data to be sent to the system under test is created according to the test scenario and sent to the protocol processing section. (b) the protocol processing unit which performs normal protocol processing on the test data sent from the test execution management unit and transfers it to the disturbance generation unit; (c) the protocol processing unit; The test data transferred from the test execution management section is transferred to the lower protocol processing section with or without abnormality processing according to the conditions included in the abnormality processing information sent in advance from the test execution management section. (d) the lower protocol processing unit that performs protocol processing on a layer lower than the protocol under test on the test data transferred from the disturbance generation unit and sends it to the system under test; As transmission data sent from the lower-level protocol processing unit to the system under test and response data from the system under test to the transmission data, the lower-level protocol processing unit;
Received data received from the system under test via the opposite path, such as the disturbance generation unit and the protocol processing unit, and data indicating the test procedure executed by the test execution management unit are collected for test result analysis. A protocol test device comprising: a logging section; 2) In the protocol testing device according to claim 1, the disturbance generation section includes a storage section that stores a plurality of sets of abnormality processing information sent collectively from the test execution management section, and an abnormality processing section; Compare the test data transferred from the protocol processing section with a set of abnormality processing information passed from the storage section, and if conditions for performing abnormality processing match, pass the test data to the abnormality processing section. a comparison monitoring unit that performs abnormality processing according to the content included in the abnormality processing information; and a comparison monitoring unit that detects when abnormality processing is performed in the abnormality processing unit and transmits the next set of abnormality processing from the storage unit. A protocol testing device comprising: an abnormality processing information changing section that extracts information and passes it to the comparison monitoring section.