60 results about "Software reliability testing" patented technology

The invention discloses a method for generating the reliability test data of real time embedded software, belonging to the field of software reliability. The method comprises the following steps of analyzing interfaces and relative environments of tested real-time embedded software and hardware of the tested real-time embedded software, sorting out input and output variables, and establishing a system analysis chart; establishing use types of the input and output variables; establishing use profiles and operation description graphs according to the use condition of a tested system; organizing data and randomly sampling according to the information of the established use profiles and operation description graphs, and then generating software reliability test data. The method of the invention clearly describes the use process and the use input distribution of the software, can more efficiently and automatically generate the software reliability test data, and improves the efficiency of the software reliability test.

The invention discloses a combined test method for combining software reliability tests with hardware reliability tests. The combined test method is used for testing the reliability of software and hardware systems. The combined test method includes analyzing the software and hardware systems and constructing hardware reliability test profiles and software reliability test profiles; enabling software and hardware scenarios to be orthogonal to one another to acquire system task scenarios and determining execution probabilities of the system task scenarios; creating relation matrixes for determining whether the software reliability test profiles and hardware scenario profiles are associated with one another or not; combining corresponding hardware environmental stress test profiles with the associated software reliability test profiles to generate stage child profiles for each system task scenario; organizing the stage child profiles of the same system task to form a periodic child profile, organizing the periodic child profiles according to test cycle periods to generate final combined test profiles; generating test cases according to the combined test profiles and performing the tests. The combined test method has the advantages that the reliability of the systems can be accurately evaluated by the aid of test results generated by the method, and system failure which cannot be discovered in traditional reliability tests can be discovered by the aid of the combined test method.

The invention provides a software reliability accelerated test and evaluation method based on a deformed operational profile as well as a computer-aided tool used in the same, and belongs to the field of software reliability engineering. In the method, the deformed operational profile is constructed, and then software reliability growth and verification accelerated test and evaluation are carried out on tested software based on the profile. By using the tool, a traditional operational profile is constructed by a traditional operational profile construction module, the deformed operational profile is further constructed by a deformed operational profile construction module, a reliability verification accelerated test module and a reliability growth accelerated test module are executed according to selection of a user, and cases in test are generated by an automatic test case generation module. By adopting the software reliability accelerated test and evaluation method provided by the invention, unbiased estimation of reliability parameters between the deformed operational profile and the traditional Musa operational profile is realized and the test efficiency is better; and compared with the traditional test method, the method has the advantages of short test time and accurate test result, thus facilitating understanding and practical operation of engineering personnel.

The invention discloses an embedded software reliability accelerated test method, which comprises the following steps of: by establishing a software task profile, randomly extracting and generating a software task sequence as applied complete and valid test input in actual reliability test; and in the test process, counting and collecting task characteristics and task statuses, entering a controlprocess after the test process is stable, applying a test strategy and finally performing engineering assessment on software reliability. In the method, the test strategy in the control process fulfills the aim of rationally, highly efficiently and acceleratedly testing the reliability, and expands the concept in the embedded software reliability test; the software task sequence generated based on the software task profile can satisfy the description and coverage of complex input conditions and ensures the credibility of reliability test data; and the assessment method is independent of the superposed mathematical distribution of failure data, and is applied to the reliability assessment, without overhigh requirement on accuracy, on embedded software.

The invention provides a software reliability measurement method based on software network structure characteristics, and belongs to the technical field of software complex networks. The method comprises the steps that firstly, a complete software source code of target software is acquired, a software network is constructed, importance calculation is conducted on modules in the software network, and important modules are recognized; Secondly, calculating the structure complexity, the code complexity, the interface complexity and the change frequency of each important module, and further calculating the structure reliability risk, the code reliability risk, the interface reliability risk and the change reliability risk of the software; And finally, the software reliability is measured by integrating the risks in four aspects, and the higher the calculated software reliability value is, the higher the software reliability risk is. According to the method, time-consuming and labor-consuming reliability testing is not needed, software reliability testing is not needed, time and manpower resources are saved, the problem that reliability of an existing software module is difficult to evaluate is solved, and the specific position of a high-risk module can be positioned.

The invention provides a software reliability test data generating method and a computer aided tool of the software reliability test data generating method. According to the method, a software operation profile based on orthogonal test design is constructed and is refined to the input variable level, according to the practical use conditions, the probability information is distributed for the value level of each input variable, in addition, the probability product values of all value level combinations are sequenced, a combined algorithm is adopted for selecting the level combinations meeting the pair coverage requirements from the sequenced level combinations according to the probability product, and the reliability test data is generated by the operation. The computer aided tool comprises an operation mode profile analysis module, an operation profile analysis module, an operation profile generating module, a test data generating module and a view display module, and the software operation profile structure based on the orthogonal test design and the test data generation are realized. Under the conditions of ensuring the reliability test effectiveness, the reliability test efficiency is improved, and better feasibility and effectiveness are realized.

The invention belongs to the technical field of software reliability models, and particularly relates to an imperfect debugging software reliability model with the fault detection rate reduced and changed. The invention discloses an imperfect debugging software reliability model for fault detection rate reduction change. The imperfect debugging software reliability model comprises the following steps: (1) setting model assuming conditions; (2) according to the assumption in the step (1), obtaining an imperfect debugging software reliability module (shown in the description) of the fault detection rate reduction change. The invention adopts the above technology. The method has the advantages that the method is simple and easy to implement; According to the scheme, it is assumed that in thesoftware testing process, the fault detection rate is gradually decreased and changed along with the testing time, fault introduction is nonlinearly changed along with the testing time, and a corresponding software reliability model which is inperfectly debugged is provided.

The embodiment of the invention discloses a method for analyzing software reliability and a system thereof capable of analyzing the reliability of software effectively. The method comprises the following steps: obtaining and screening the number of defects during the software test period; fitting the screened defects in chronological order to obtain a fitting result; performing a trend analysis on the obtained fitting result, obtaining the failure frequency of the software under the test condition.

The invention provides a method for testing software reliability. The method comprises the following: step 1, establishing software-reliability test scenes; and step 2, testing software reliability in the software-reliability test scenes. Therefore, on the basis of software test work in general meaning, the method has further expansion and promotion, establishes an independent test-quality evaluation mechanism oriented to reliability innovatively according to production versions, can control production quality more effectively and reduce the production risk and hidden trouble of software product versions by establishing a strict test output-permission evaluation mechanism and utilizing means and methods for testing the production versions.

The invention discloses a joint reliability test section construction method for a software and hardware hybrid system. The method comprises a total of 12 steps: the software and hardware hybrid system is analyzed; a comprehensive task section of the software and hardware hybrid system is determined; a hardware task section is determined; an environment section is determined; an electromagnetic section is determined; a hardware reliability test section is determined; a software task section is determined; a software-related function section is determined; a software-related operation section is determined; a software reliability test section is determined; probabilistic scenario information is determined; and the hardware reliability test section and the software reliability test section are combined. The influences of electromagnetic interference stress on the hardware and software hybrid system can be considered, the actual use situation of the software and hardware hybrid system canbe more truly reflected, and the reliability test of the software and hardware hybrid system based on the reliability test section detects the software and hardware hybrid system comprehensive faultappearing during the actual use process, and reliability identification test of the software and hardware hybrid system is more facilitated.

The invention relates to a software reliability testing method and device based on code tracking, belongs to the technical field of software testing, and solves the problems that in the prior art, code tracking is lacked, and static information extraction is not suitable for detecting the consistency of a model and a code. The method comprises the steps of tracking from a reliability strategy model to the code to obtain a reliability strategy code, wherein tracking comprises positioning and mapping; acquiring a Log file based on reliability strategy code instrumentation, wherein the Log filecomprises execution path information of the reliability strategy code; constructing a code LTS based on the Log file; constructing a reliability strategy UML time sequence diagram model; converting the reliability strategy UML time sequence diagram model into a model LTS; extracting branch paths of the code LTS as code paths, and extracting all branch paths of the model LTS as model paths; and judging whether the model path is matched with the code path. Code tracking and an accurate model and code dynamic consistency checking method are realized.

The invention provides a test data generation method for software reliability, which comprises the steps of software failure mode analysis, software space analysis, mapping and test data generation. According to a software failure mode obtained at an early stage of a development phase and analysis of the software space, the software input variable, the output variable, the value space of the variable, the value rules and the constraint conditions of the variable in the value space are determined, then the failure mode is mapped to the software space, finally, the test data are generated basedon the mapping function of the failure mode and the software space according to the possible input of the software when the software is in use. The early information of the development phase is utilized, so the ability of expose defects of the test case is improved and the repetition of the test case is reduced.

The invention discloses a method and device for improving software compatibility testing. The method includes: during the installation of software needed by a user, monitoring a reference log generated according to the installation process log and testing process log of the software to determine a dependence package which needs to be installed; downloading and installing the determined dependencepackage. The method has the advantages that the dependence package which needs to be installed can be determined by monitoring the installation process log and the testing process log, then the determined dependence package can be downloaded and installed, manual intervention is not needed, the installation efficiency of the dependence package is increased, and accordingly the software compatibility testing is improved.