GENERATING TEST CASES OF COMPOSITE SERVICES BASED ON OWL-S AND EH-CPN

2010 ◽  
Vol 20 (07) ◽  
pp. 921-941 ◽  
Author(s):  
BIXIN LI ◽  
SHUNHUI JI ◽  
DONG QIU ◽  
JU CAI
Keyword(s):  
Web Services ◽  
Web Service ◽  
Complex Function ◽  
Control Flow ◽  
Test Sequence ◽  
Test Cases ◽  
Automatic Integration ◽  
Flow Information ◽  
Composite Services ◽  
Service Reuse

In web service times, the techniques for composing services are based on service reuse and automatic integration. A new web service will be generated by composing some existing web services. These web services cooperate with each other to provide a new more complex function. It is necessary and very important to test the interaction behavior between any two web services during composition. In this paper, a kind of enhanced hierarchical color petri-net (or EH-CPN) is introduced to generate test cases for testing the interaction, where EH-CPN is transformed from OWL-S document, and both control flow and data flow information in EH-CPN are analyzed and used to generate an executable test sequence, and further test cases are created by combining the test sequence and test data in an XML file.

Ensuring Customised Transactional Reliability of Composite Services

2013 ◽  
pp. 203-232 ◽  
Author(s):  
Sami Bhiri ◽  
Walid Gaaloul ◽  
Claude Godart ◽  
Olivier Perrin ◽  
Maciej Zaremba ◽  
...  
Keyword(s):  
Web Services ◽  
Web Service ◽  
Control Structure ◽  
Point Of View ◽  
Workflow Patterns ◽  
Composite Services ◽  
Transactional Models ◽  
Transactional Approach

Web services are defined independently of any execution context. Due to their inherent autonomy and heterogeneity, it is difficult to examine the behaviour of composite services, especially in case of failures. This paper is interested in ensuring composite services reliability. Reliable composition is defined as a composition where all instance executions are correct from a transactional and business point of view. In this paper, the authors propose a transactional approach for ensuring reliable Web service compositions. The approach integrates the expressivity power of workflow models and the reliability of Advanced Transactional Models (ATM). This method offers flexibility for designers to specify their requirements in terms of control structure, using workflow patterns, and execution correctness. Contrary to ATM, the authors start from the designers’ specifications to define the appropriate transactional mechanisms that ensure correct executions according to their requirements.

scholarly journals Bootstrapping Automated Testing for RESTful Web Services

2021 ◽  
pp. 46-66
Author(s):  
Yixiong Chen ◽  
Yang Yang ◽  
Zhanyao Lei ◽  
Mingyuan Xia ◽  
Zhengwei Qi
Keyword(s):  
Web Services ◽  
Web Service ◽  
State Of The Art ◽  
Automated Testing ◽  
Test Cases ◽  
Proof Of Concept ◽  
Fine Grained ◽  
Testing Tools ◽  
Restful Web Services ◽  
Restful Services

AbstractModern RESTful services expose RESTful APIs to integrate with diversified applications. Most RESTful API parameters are weakly typed, which greatly increases the possible input value space. This poses difficulties for automated testing tools to generate effective test cases to reveal web service defects related to parameter validation. We call this phenomenon the type collapse problem. To remedy this problem, we introduce FET (Format-encoded Type) techniques, including the FET, the FET lattice, and the FET inference to model fine-grained information for API parameters. Enhanced by FET techniques, automated testing tools can generate targeted test cases. We demonstrate Leif, a trace-driven fuzzing tool, as a proof-of-concept implementation of FET techniques. Experiment results on 27 commercial services show that FET inference precisely captures documented parameter definitions, which helps Leif to discover 11 new bugs and reduce $$72\% \sim 86\%$$ 72 % ∼ 86 % fuzzing time as compared to state-of-the-art fuzzers.

Enhancing Security Modeling for Web Services Using Delegation and Pass-On

2010 ◽  
Vol 7 (1) ◽  
pp. 1-21 ◽  
Author(s):  
Wei She ◽  
I-Ling Yen ◽  
Bhavani Thuraisingham
Keyword(s):  
Web Services ◽  
Web Service ◽  
Information Flow ◽  
Security Model ◽  
Security Issues ◽  
Web Service Security ◽  
Security Models ◽  
Composite Services ◽  
Service Environments ◽  
Security Standards

In recent years, security issues in web service environments have been widely studied and various security standards and models have been proposed. However, most of these standards and models focus on individual web services and do not consider the security issues in composite services. In this article, the authors propose an enhanced security model to control the information flow in service chains. It extends the basic web service security models by introducing the concepts of delegation and pass-on. Based on these concepts, new certificates, certificate chains, delegation and pass-on policies, and how they are used to control the information flow are discussed. The authors also introduce a case study from a healthcare information system to illustrate the protocols.

Result Refinement in Web Services Retrieval Based on Multiple Instances Learning

2011 ◽  
pp. 340-357 ◽  
Author(s):  
Yanzhen Zou ◽  
Lu Zhang ◽  
Yan Li ◽  
Bing Xie ◽  
Hong Mei
Keyword(s):  
Web Services ◽  
Web Service ◽  
Experimental Results ◽  
Retrieval Process ◽  
New Approach ◽  
Critical Step ◽  
Uddi Registry ◽  
Service Reuse

Web services retrieval is a critical step for reusing existing services in the SOA paradigm. In the UDDI registry, traditional category-based approaches have been used to locate candidate services. However, these approaches usually achieve relatively low precision because some candidate Web Services in the result set cannot provide actually suitable operations for users. In this article, we present a new approach to improve this kind of category-based Web Services retrieval process that can refine the coarse matching results step by step. The refinement is based on the idea that operation specification is very important to service reuse. Therefore, a Web Service is investigated via multiple instances view in our approach, which indicates that a service is labeled as positive if and only if at least one operation provided by this service is usable to the user. Otherwise, it is labeled as negative. Experimental results demonstrate that our approach can increase the retrieval precision to a certain extent after one or two rounds of refinement.

Towards a High-Availability-Driven Service Composition Framework

2013 ◽  
pp. 221-243 ◽  
Author(s):  
Jonathan Lee ◽  
Shang-Pin Ma ◽  
Shin-Jie Lee ◽  
Chia-Ling Wu ◽  
Chiung-Hon Leon Lee
Keyword(s):  
Web Services ◽  
Web Service ◽  
Service Composition ◽  
Service Discovery ◽  
Service Management ◽  
High Availability ◽  
Main Trend ◽  
Service Oriented ◽  
Composite Services ◽  
Delivery Approach

Service-Oriented Computing (SOC), a main trend in software engineering, promotes the construction of applications based on the notion of services. SOC has recently attracted a great deal of attention from researchers, and has been comprehensively adopted by industry. However, service composition enabling the aggregation of existing services into composite services still imposes a great challenge to service-oriented technology. Web service composition requires component Web services to be available in request, to behave correctly in operation, and to be replaceable flexibly in failure. Although availability of Web services plays a crucial role in building robust SOC-based applications, it has been largely neglected, especially for service composition. In this chapter, we propose a service composition framework that integrates a set of composition-based service discovery mechanisms, a user-oriented service delivery approach, as well as a service management mechanism for composite services.

Towards a High-Availability-Driven Service Composition Framework

2014 ◽  
pp. 1498-1520
Author(s):  
Jonathan Lee ◽  
Shang-Pin Ma ◽  
Shin-Jie Lee ◽  
Chia-Ling Wu ◽  
Chiung-Hon Leon Lee
Keyword(s):  
Web Services ◽  
Web Service ◽  
Service Composition ◽  
Service Discovery ◽  
Service Management ◽  
High Availability ◽  
Main Trend ◽  
Service Oriented ◽  
Composite Services ◽  
Delivery Approach

Service-Oriented Computing (SOC), a main trend in software engineering, promotes the construction of applications based on the notion of services. SOC has recently attracted a great deal of attention from researchers, and has been comprehensively adopted by industry. However, service composition enabling the aggregation of existing services into composite services still imposes a great challenge to service-oriented technology. Web service composition requires component Web services to be available in request, to behave correctly in operation, and to be replaceable flexibly in failure. Although availability of Web services plays a crucial role in building robust SOC-based applications, it has been largely neglected, especially for service composition. In this chapter, we propose a service composition framework that integrates a set of composition-based service discovery mechanisms, a user-oriented service delivery approach, as well as a service management mechanism for composite services.

Enhancing Security Modeling for Web Services Using Delegation and Pass-On

2012 ◽  
pp. 286-307
Author(s):  
Wei She ◽  
I-Ling Yen ◽  
Bhavani Thuraisingham
Keyword(s):  
Web Services ◽  
Web Service ◽  
Information Flow ◽  
Security Model ◽  
Security Issues ◽  
Web Service Security ◽  
Security Models ◽  
Composite Services ◽  
Service Environments ◽  
Security Standards

In recent years, security issues in web service environments have been widely studied and various security standards and models have been proposed. However, most of these standards and models focus on individual web services and do not consider the security issues in composite services. In this article, the authors propose an enhanced security model to control the information flow in service chains. It extends the basic web service security models by introducing the concepts of delegation and pass-on. Based on these concepts, new certificates, certificate chains, delegation and pass-on policies, and how they are used to control the information flow are discussed. The authors also introduce a case study from a healthcare information system to illustrate the protocols.

scholarly journals SERVICE-ORIENTED DESIGN: A MULTI-VIEWPOINT APPROACH

2004 ◽  
Vol 13 (04) ◽  
pp. 337-368 ◽  
Author(s):  
REMCO DIJKMAN ◽  
MARLON DUMAS
Keyword(s):  
Web Services ◽  
Control Flow ◽  
Proof Of Concept ◽  
Static Verification ◽  
Verification Tool ◽  
Proposed Model ◽  
Service Oriented ◽  
Composite Services ◽  
Interface Behaviour ◽  
The Web

As the technology associated with the "Web Services" trend gains significant adoption, the need for a corresponding design approach becomes increasingly important. This paper introduces a foundational model for designing (composite) services. The innovation of this model lies in the identification of four interrelated viewpoints (interface behaviour, provider behaviour, choreography, and orchestration) and their formalization from a control-flow perspective in terms of Petri nets. By formally capturing the interrelationships between these viewpoints, the proposal enables the static verification of the consistency of composite services designed in a cooperative and incremental manner. A proof-of-concept simulation and verification tool has been developed to test the possibilities of the proposed model.

scholarly journals TFCWS: Testing Framework for composite web services.

2014 ◽  
Vol 13 (4) ◽  
pp. 4405-4415
Author(s):  
Deepali Diwase ◽  
Pujashree Vidap
Keyword(s):  
Web Services ◽  
Web Service ◽  
Response Times ◽  
Source Code ◽  
The Internet ◽  
Test Case ◽  
Test Cases ◽  
Testing Framework ◽  
Composite Web Service ◽  
Composite Web Services

In every business domain Web Services are more popular solutions to implement the software. Composite web service can be created by combining basic web services. Many unreliable web services are deployed on the internet. Hence, testing is required to ensure reliability. Software testers have great challenges to test web services. Source code of web services is unavailable. The Testing Framework is used to test web services without knowledge of its internal structure. In this paper, we have proposed a Testing Framework for Composite Web Services (TFCWS). It generates report which shows the total number of test cases executed for each web service with pass or fail status of each test case. It calculates the throughput of web service and response time of each test case. We have used web services response times for analysis of TFCWS, Soap UI and Storm.

The Framework for Testing of Web Services through Actions in Addition to Scripts

2014 ◽  
Vol 490-491 ◽  
pp. 1617-1623
Author(s):  
R. Deeptha ◽  
Rajeswari Mukesh
Keyword(s):  
Web Services ◽  
Web Service ◽  
Susceptibility Testing ◽  
Test Case Generation ◽  
Test Case ◽  
Test Cases ◽  
Testing Framework ◽  
Testing Tool ◽  
Current Scenario ◽  
Web Services Testing

.As Web Services draw modules within and across enterprises, dynamically and belligerently testing Web Services has become crucial. Comprehensive Functional, Concert, Interoperability and Susceptibility Testing form the Pillars of Web Services Testing. Only by adopting a comprehensive testing department, enterprises can safeguard that their Web Services is robust, scalable, interoperable, and secure. Overall functionality of web services would be informal towards test. But, only if we methodically trust the applications components (services) before we combine them to complete the application. In current scenario web service technology comprehends various testing apparatuses for manipulating and generating the test cases. But these tools and approaches were negotiating security and execution time and consume more resources. The existing methodologies will generate test cases for the low end web services and limited number of requests, due to these constraints we built new testing framework. In this paper we introduced the new basis with testing of actions, scripts and link for web services by the use of test cases. For this approach we used SOAP web services with SOA. The test case generation and testing reports will gives the accurate testing results and test cases. These test cases are generated using Java JUnit testing tool. We implemented our approach in a java based platform for efficient and secure manner.

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