Software fault injection method based on historical defect data mining

Abstract

The invention discloses a software fault injection method based on historical defect data mining. The software fault injection method comprises the steps that A, inquiring entity element records of software; B, querying defect data; establishing and storing an association relationship between the defects and the injection fault types; C, initializing parameters of the hidden Markov model; trainingthe model by using the data to obtain a model with optimal parameters; D, acquiring entity elements contained in the software change content; E, substituting the optimal parameter model and the entity elements into a Viterbi algorithm to calculate an optimal possible result; and F, outputting an injection fault type and associated defect data, and designing a fault injection strategy. According to the invention, the design of a fault injection strategy is driven by mining and analyzing objective data; according to the method, the defects that the robustness, the fault tolerance, the disastertolerance and the service high availability faults of the software system are most likely to occur due to the fact that testing personnel are guided to inject the faults into a specific software module in a targeted mode are overcome, the working efficiency of fault injection is improved, and the working result has high accuracy and credibility.

Description

technical field [0001] The invention relates to the field of computer software development and software testing, in particular to a software fault injection method based on historical defect data mining. Background technique [0002] Software fault injection refers to the use of specific tools and techniques to construct or trigger one or some defects of the software system, so that the software system is in a fault state. After the fault occurs, observe the short-term and long-term operating status of the software system and evaluate the software system. Whether it has robustness, fault tolerance, disaster tolerance and high availability of services. Generally speaking, the principle of software fault injection is to use specific tools to modify the program execution statements of the software system, data in the database or data in the memory to simulate the occurrence of software defects. The techniques of software fault injection mainly include debugger injection, devic...

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Problems solved by technology

This approach has a huge workload, low efficiency, and will be affected by the experience of the testers. It is more random, and the quality of work is difficult to guarantee.

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