Towards efficient measuring of web services API coverage

Hummer, Waldemar; Raz, Orna; Dustdar, Schahram

doi:10.1145/1985394.1985398

Cited by 3 publications

(2 citation statements)

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“…TeCoS aims at providing a holistic view of SBAs by providing various coverage metrics, thereby operating both on the level of the service API and on the service composition level. In previous work, we have presented how TeCoS collects and stores invocation messages at runtime in order to compute API coverage metrics of single services , whereas in this paper, the focus is on achieving test coverage for composed services. The task of TeCoS is to provide the data necessary to construct the composition model, as well as to generate and execute the composition test cases.…”

Section: Implementation: the Tecos Frameworkmentioning

confidence: 99%

Testing of data‐centric and event‐based dynamic service compositions

Hummer

Raz

Shehory

et al. 2013

Software Testing Verif & Rel

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SUMMARYThis paper addresses integration testing of data‐centric and event‐based dynamic service compositions. The compositions under test define abstract services that are replaced by concrete candidate services at runtime. Testing all possible instantiations of a composition leads to combinatorial explosion and is often infeasible. We consider data dependencies between services as potential points of failure and introduce the k‐node data flow test coverage metric, which helps to significantly reduce the number of test combinations. We formulate a combinatorial optimization problem for generating minimal sets of test cases. On the basis of this formalization, we present a mapping to the model of FoCuS, a coverage analysis tool. FoCuS efficiently computes near‐optimal solutions, which are used to automatically generate test instances. The proposed approach is applicable to various composition paradigms. We illustrate the end‐to‐end practicability based on an integrated scenario, which uses two diverse composition techniques: on the one hand, the Web Services Business Process Execution Language and on the other hand, WS‐Aggregation, a platform for event‐based service composition. Copyright © 2013 John Wiley & Sons, Ltd.

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Section: Implementation: the Tecos Frameworkmentioning

confidence: 99%

Testing of data‐centric and event‐based dynamic service compositions

Hummer

Raz

Shehory

et al. 2013

Software Testing Verif & Rel

Self Cite

View full text Add to dashboard Cite

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“…Furthermore, we consider only the rate of input requests and not their input data. We assume that input requests can be partitioned into homogeneous classes, achieving a desired level of test coverage [14]. We argue that these choices ease the search but provide good levels of expressiveness and flexibility.…”

Section: Search Formalizationmentioning

confidence: 99%

Testing elastic systems with surrogate models

Gambi

Hummer

Dustdar

2013

2013 1st International Workshop on Combining Modelling and Search-Based Software Engineering (CMSBSE)

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Abstract-We combine search-based test case generation and surrogate models for black-box system testing of elastic systems. We aim to efficiently generate tests that expose functional errors and performance problems related to system elasticity.Elastic systems dynamically change their resources allocation to provide consistent quality of service in face of workload fluctuations. However, their ability to adapt could be a double edged sword if not properly designed: They may fail to acquire the right amount of resources or even fail to release them. Blackbox system testing may expose such problems by stimulating system elasticity with suitable sequences of interactions. However, finding such sequences is far from trivial because the number of possible combinations of requests over time is unbounded.In this paper, we analyze the problem of generating test cases for elastic systems, we cast it as a search-based optimization combined with surrogate models, and present the conceptual framework that supports its execution.

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