JPS61196647A - System for data communication procedure test - Google Patents

Abstract

PURPOSE:To decide automatically the test by storing the information in the trace buffer and deciding the process realized by means of the pattern generating part by the diagnosing part, so that the processing and the coping executed for the communicating port and the request data from the communicating port can be investigated at the optional time. CONSTITUTION:A communicating system 10 communicates through communicating ports 80-1 and 80-2 and a communicating network 9 with a pattern generating part 30, and simultaneously, registers through the communicating port 80-1 the processed object, data, etc., through a trace buffer registering line to a trace buffer 20. A diagnosing part 50 is started by the request from a diagnosis synchronizing line 6-1, and refers to an action of the communicating system 10 for one transmitting pattern, the request, data, etc., from the communicating port through a trace buffer referring line 3. Further, the part refers to the expected result through an expected result referring line 4-1, compares with the contents of the trace buffer, judges whether or not the transmission is good, and outputs the result through an output line 5 by an output part 60.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a data communication (transmission) procedure (protocol).
The present invention relates to testing, and particularly to a data communication procedure test method suitable for examining the operation of a communication system during abnormal transmission.

[Background of the invention]

Conventionally, the procedures of communication systems were checked using Japanese Patent Laid-Open No. 47
As described in No. 45314, abnormal transmission has been checked by adding a simple external device.

However, such a method does not take into consideration issues such as how to use the additional equipment, reproducibility of the test, and the fact that the test cannot be performed without a human being present.

[Purpose of the invention]

An object of the present invention is to objectively, correctly, and automatically test procedures in data communication (transmission), and to perform arbitrary tests within the environment where a communication system exists, without the need for external accessories such as simulators. It is an object of the present invention to provide a test method that enables testing of transmission patterns, and in particular, allows easy checking of abnormal transmission protocols.

[Summary of the invention]

The present invention relates to processing performed on a communication port.

In order to check the correspondence and request data from the communication port at any time, the diagnostic section stores this information in a trace buffer and determines the transmission process realized by the pattern generation section. , which made it possible for humans to automatically perform judgments that were previously made during testing.

[Embodiments of the invention]

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

FIG. 1 is a block diagram of the present invention. The communication system 10 communicates with the other station (pattern generation unit 30) via the communication port 80-1, 80-2 and the communication network 9, and at the same time, transmits events, data, etc. processed via the communication port 80-1. , is registered in the trace buffer 20 via the trace buffer registration line 2. The pattern generation unit 3o refers to the pattern element via the pattern reference line 4-2, and accordingly connects the communication port 80-2 to the communication port 80-2.
-1 and realizes an arbitrary transmission pattern with the other station (communication system 10) via the communication network 9, and after completing processing for one pattern element, requests diagnosis to the diagnosis section 5o via the diagnosis synchronization line 6. Moreover, the pattern generation section 30
When testing the communication system during transmission, requests the communication system transmission start means 71 to transmit the communication system 10 via the communication activation line 8. The diagnostic unit 50 is activated by a request from the diagnostic synchronization line 6-1, and refers to the operation of the communication system 10 for one transmission pattern, requests from communication ports, data, etc. via the trace buffer reference line 3. Further, the predicted result is referred to via the predicted result reference line 4-1, and compared with the contents of the trace buffer, the quality of the transmission is determined, and the result is outputted by the output section 60 via the output line 5. At the same time, after the determination is completed, the pattern generation section 30 is caused to generate the next pattern via the pattern generation synchronization line 6-2.

The above test is started by the test start means 7o activating the pattern generation section 30, and the test is ended when the pattern generation section 30 detects the end of the pattern.

FIG. 2 shows an example of how the diagnostic unit 50 reads trace data from the trace buffer 2o in FIG.
When it operates, the information will be updated at the same time as it is registered. The reference pointer 2°-2 is set by the diagnostic unit 50 to the buffer 2o.
-1 is updated at the same time as it comes to refer to buffer 20-
Whether 1 is empty or not is determined by the registration pointer 20-3 and
The determination is made by looking at the contents of the reference pointer 20-2.

Similarly, the pattern element and expected result storage section 4 in FIG.
According to this embodiment, a person can test various transmission patterns by only changing the pattern elements and the expected result storage section 60, and furthermore, during the test, , there is no need for humans to be present, and it is effective in improving reliability and reproducibility.

〔Effect of the invention〕

According to the present invention, various test patterns are automatically generated (created) by the pattern generator, so there is no malfunction or erroneous operation due to human intervention, and reliability, reproducibility, and
It has the advantage of being easy to operate. According to the present invention, there is no need to prepare a special simulator, and testing can be performed immediately when a defective part occurs, resulting in high speed of testing. According to the present invention, the test results are automatically diagnosed, so the test can be performed unattended.

[Brief explanation of drawings]

FIG. 1 is a block diagram of the configuration of the present invention, and FIG. 2 is a diagram showing the relationship between the trace buffer and the diagnostic section in FIG. 1. Expected result storage section, 50... Diagnosis section, 60... Output section, 70... Test start means, 71... Communication system transmission start means, 80-1 to 80-2... Communication port, 1
-1.1-2...Communication port input/output line, 2...
Trace buffer registration line, 3... Trace buffer reference line, 4-1... Expected result reference line, 4-
2... Pattern reference line, 5... Output line, 6
-1...Diagnosis synchronization line, 6-2...Pattern generation synchronization line, 7...Communication system transmission start line, 8
...Communication starting line, 20-1...Buffer, 2o
-2... Reference pointer, 20-3... Registration pointer.

Claims (1)

[Claims] 1. A trace buffer that records the communication system to be tested, the processing that the communication system performed on the communication port, and its responses, a pattern generator that generates various test patterns, test patterns, and expected results for those patterns. A storage unit for storing the communication system, a means for starting the pattern generation unit (starter), communication ports connected to the communication system and pattern generation unit, a means for connecting these communication ports (network), and determining the test results. A data communication procedure test method characterized by comprising a diagnostic section and an output section that outputs the results.