There exist many automated unit test-generator tools for Java with the primary task of generating test cases, comprised of inputs and a corresponding oracle, each of which is explicitly paired with a specific supporti...There exist many automated unit test-generator tools for Java with the primary task of generating test cases, comprised of inputs and a corresponding oracle, each of which is explicitly paired with a specific supporting test implementation. The authors posit that this explicit pairing, or conflating, of test implementation with test case is unnecessary and counter-productive. The authors address this problem by separating the conflated concerns into two distinct tasks: 1) instantiating test implementations and 2) instantiating test cases. This paper focuses on automating the first task in support of the second with the goal of freeing the test engineer to concentrate on test case instantiation. The authors present a new open-source test-preparation tool Obsidian that produces robust, comprehensive, and maintainable unit test implementations. Obsidian, built on the JUnit framework, uses a set of context patterns and associated algorithms combined with information from the Java Reflection API to generate these unit test implementations from Java byte code. These context patterns guide Obsidian to prepare test implementations that guarantee compilation, support exception handling, enable multiple test cases when required, and provide a suitable location for assertions about the test case outcome(s). Obsidian supports regression testing and test-driven development through its novel audits of the testing process.展开更多
Reusing test cases from existing test case library is quite common in the software testing field. Testing practice tells us that there is a strong relationship between the granularity of a function unit under testing ...Reusing test cases from existing test case library is quite common in the software testing field. Testing practice tells us that there is a strong relationship between the granularity of a function unit under testing and that of the test case. A function unit with small granularity usually results in the test cases with the same small granularity. Therefore a test case defined as the function point,i. e.,the smallest size function unit,was provided for the first time.Though test cases with smaller granularity usually have better reusability,the cost of accurately reusing and integrating such test cases is also higher. In order to balance the test case reusability and the cost of test case reuse,a novel test case reuse model based on the function point was proposed in this paper. In this model,a reusable test case for specification-based testing was defined and some reuse strategies and three formal reuse methods were given. Finally,the complete automatic software process was realized by a reusing generation tool. The new method has improved reuse accuracy,while greatly enhances the software productivity.展开更多
文摘There exist many automated unit test-generator tools for Java with the primary task of generating test cases, comprised of inputs and a corresponding oracle, each of which is explicitly paired with a specific supporting test implementation. The authors posit that this explicit pairing, or conflating, of test implementation with test case is unnecessary and counter-productive. The authors address this problem by separating the conflated concerns into two distinct tasks: 1) instantiating test implementations and 2) instantiating test cases. This paper focuses on automating the first task in support of the second with the goal of freeing the test engineer to concentrate on test case instantiation. The authors present a new open-source test-preparation tool Obsidian that produces robust, comprehensive, and maintainable unit test implementations. Obsidian, built on the JUnit framework, uses a set of context patterns and associated algorithms combined with information from the Java Reflection API to generate these unit test implementations from Java byte code. These context patterns guide Obsidian to prepare test implementations that guarantee compilation, support exception handling, enable multiple test cases when required, and provide a suitable location for assertions about the test case outcome(s). Obsidian supports regression testing and test-driven development through its novel audits of the testing process.
基金National Natural Science Foundation of China(No.61262010)
文摘Reusing test cases from existing test case library is quite common in the software testing field. Testing practice tells us that there is a strong relationship between the granularity of a function unit under testing and that of the test case. A function unit with small granularity usually results in the test cases with the same small granularity. Therefore a test case defined as the function point,i. e.,the smallest size function unit,was provided for the first time.Though test cases with smaller granularity usually have better reusability,the cost of accurately reusing and integrating such test cases is also higher. In order to balance the test case reusability and the cost of test case reuse,a novel test case reuse model based on the function point was proposed in this paper. In this model,a reusable test case for specification-based testing was defined and some reuse strategies and three formal reuse methods were given. Finally,the complete automatic software process was realized by a reusing generation tool. The new method has improved reuse accuracy,while greatly enhances the software productivity.
