Open Access
A Consumer-Driven Contract-Based Approach to Verifying User Interface Integration in Microservices Architectures
4
Department of Computer Science, University of Ghana, Accra, Ghana
Abstract
Context: Microservices Architectures (MSA) enhance deployment velocity and service autonomy, but traditional End-to-End (E2E) User Interface (UI) testing often reintroduces systemic coupling, leading to slow feedback cycles and high-test flakiness. This friction undermines the core benefits of MSA.
Objective: This research proposes and evaluates a novel, Consumer-Driven Contract (CDC) testing frameworkâthe CDC-UI Hybrid Modelâto strategically replace brittle E2E tests for verifying UI-to-backend integration in MSA environments. The goal is to harmonize testing across service boundaries and the presentation layer, accelerating the feedback loop.
Methodology: The study introduces a two-layer contract strategy: standard service-to-service CDC, complemented by a dedicated UI-Consumer Contract where the UI layer defines its expectations of the Backend-for-Frontend (BFF)/API Gateway. A simulated MSA case study was used to compare a baseline E2E-heavy approach against the proposed CDC-UI hybrid model, measuring key indicators such as test execution time, flakiness rate, and defect detection efficacy.
Results: The implementation of the CDC-UI Hybrid Model yielded a notable reduction in overall integration test execution time and a significant decrease in the test suite's non-deterministic flakiness. The approach successfully shifted the detection of UI-backend integration faults earlier in the development pipeline, correlating with a lower Defect Escape Rate.
Conclusion: The CDC-UI Hybrid Model provides a highly effective and pragmatic solution for validating UI integration in microservices. It aligns strategically with modern testing practices, dramatically improving test stability and accelerating the feedback loop, thereby preserving team autonomy and realizing the velocity potential of distributed architectures.
Keywords
Microservices Architecture,
Contract Testing,
Consumer-Driven Contracts,
User Interface Testing
References
Harsh Bhasin, Esha Khanna, and Sudha. âBlack Box Testing based on Requirement Analysis and Design Specificationsâ. In: International Journal of Computer Applications 87.18 (2014), pp. 36â40.
MDN contributors. HTTP response status codes. Feb. 2022.
Vahid Garousi and Junji Zhi. âA survey of software testing practices in Canadaâ. In: Journal of Systems and Software 86.5 (2013), pp. 1354â1376.
J.R. Horgan, S. London, and M.R. Lyu. âAchieving software quality with testing coverage measuresâ. In: Computer 27.9 (1994), pp. 60â69.
IBM. What is software testing?
Irena JovanoviÄ. âSoftware testing methods and techniquesâ. In: The IPSI BgD Transactions on Internet Research 30 (2006).
Chandra Jha, A. (2025). VXLAN/BGP EVPN for Trading: Multicast Scaling Challenges for Trading Colocations. International Journal of Computational and Experimental Science and Engineering, 11(3). https://doi.org/10.22399/ijcesen.3478
Mohd Ehmer Khan. âDifferent forms of software testing techniques for finding errorsâ. In: International Journal of Computer Science Issues (IJCSI) 7.3 (2010), p. 24.
Mohd. Ehmer Khan and Farmeena Khan. âA Comparative Study of White Box, Black Box and Grey Box Testing Techniquesâ. In: (IJACSA) International Journal of Advanced Computer Science and Applications 3.6 (2012), pp. 12â15.
Charles M. Kozierok. The TCP/IP-Guide: A comprehensive, illustrated internet protocols reference. No Starch Press, 2009.
Jyri LehvÀ. Testing Integrations with Consumer-Driven Contract Tests. eng. 2019.
Jyri LehvĂ€, Niko MĂ€kitalo, and Tommi Mikkonen. âConsumer-Driven Contract Tests for Microservices: A Case Studyâ. In: Product-Focused Software Process Improvement. Ed. by Xavier Franch, Tomi MĂ€nnistö, and Silverio MartĂnez-FernĂĄndez. Cham: Springer International Publishing, 2019.
James Lewis and Martin Fowler. Microservices a definition of this new architectural term. Mar. 2014.
Lu Luo. âSoftware testing techniquesâ. In: Institute for software research international Carnegie mellon university Pittsburgh, PA 15232.1-19 (2001), p. 19.
Qingzhou Luo et al. âAn Empirical Analysis of Flaky Testsâ. In: Proceedings of the 22nd ACM SIGSOFT International Symposium on Foundations of Software Engineering. FSE 2014. Hong Kong, China: Association for Computing Machinery, 2014.
Y.K. Malaiya. âAntirandom testing: getting the most out of black-box testingâ. In: Proceedings of Sixth International Symposium on Software Reliability Engineering. ISSREâ95. 1995, pp. 86â95.
B. Meyer. âApplying âdesign by contractââ. In: Computer 25.10 (1992), pp. 40â51.
Elliot Murray. Dockerized Pact Broker. Aug. 2020.
Elliot Murray. Gotchas. Aug. 2020.
Elliot Murray and joklek. Contract Tests vs Functional Tests. Jan. 2021.
Florian Nagel and Martin Leucker. âAnalysis of Consumer-driven contract tests with asynchronous communication between microservicesâ. In: (Dec. 2019).
Srinivas Nidhra and Jagruthi Dondeti. âBlack box and white box testing techniques-a literature reviewâ. In: International Journal of Embedded Systems and Applications (IJESA) 2.2 (2012), pp. 29â50
Infrastructure as Code (IaC) Best Practices for Multi-Cloud Deployments in Enterprises. (2025). International Journal of Networks and Security, 5(01), 174-186. https://doi.org/10.55640/ijns-05-01-10
Charlene OâHanlon. âA Conversation with Werner Vogels: Learning from the Amazon Technology Platform: Many Think of Amazon as âThat Hugely Successful Online Bookstore.â You Would Expect Amazon CTO Werner Vogels to Embrace This Distinction, but in Fact It Causes Him Some Concern.â In: Queue 4.4 (May 2006), pp. 14â22.
C. Pautasso et al. âMicroservices in Practice, Part 1: Reality Check and Service Designâ. In: IEEE Software 34.01 (Jan. 2017), pp. 91â98.
G. Purna Sudhakar. âA model of critical success factors for software projectsâ. In: Journal of Enterprise Information Management 25.6 (2012), pp. 537â558.
SMK Quadri and Sheikh Umar Farooq. âSoftware testingâgoals, principles, and limitationsâ. In: International Journal of Computer Applications 6.9 (2010), p. 1.
Sagar Kesarpu. (2025). Contract Testing with PACT: Ensuring Reliable API Interactions in Distributed Systems. The American Journal of Engineering and Technology, 7(06), 14â23. https://doi.org/10.37547/tajet/Volume07Issue06-03
Chris Richardson. Pattern: Decompose by business capability.
Ahmad Salman et al. âAn Empirical Investigation of the Impact of the Communication and Employee Motivation on the Project Success Using Agile Framework and Its Effect on the Software Development Businessâ. In: Business Perspectives and Research 9.1 (2021), pp. 46â61.
Abhijit A Sawant, Pranit H Bari, and PM Chawan. âSoftware testing techniques and strategiesâ. In: International Journal of Engineering Research and Applications (IJERA) 2.3 (2012), pp. 980â986.
Dharmendra Shadija, Mo Rezai, and Richard Hill. âTowards an understanding of microservicesâ. In: 2017 23rd International Conference on Automation and Computing (ICAC). 2017, pp. 1â6.
Beth Skurrie. Matching. Aug. 2020.
Beth Skurrie, Matt Fellows, and Elliot Murray. Getting started. Mar. 2021.
Beth Skurrie, Matt Fellows, and Elliot Murray. How Pact works. May 2021.
Beth Skurrie, Matt Fellows, and Elliot Murray. Webhooks. Oct. 2021.
Beth Skurrie and Elliot Murray. When to use Pact. July 2020.
Beth Skurrie, Elliot Murray, and obinna240. Can I Deploy. Nov. 2021.
Beth Skurrie et al. FAQ. Mar. 2022.
Beth Skurrie et al. Writing Consumer tests. Jan. 2021.
Johannes Thönes. âMicroservicesâ. In: IEEE Software 32.1 (2015), pp. 113â116.
Unit testing best practices with .NET Core and .NET Standard. Nov. 2021.
Markos Viggiato et al. Microservices in Practice: A Survey Study. 2018. arXiv: 1808.04836 [cs.SE].
Ham Vocke. The Practical Test Pyramid. Feb. 2018.
Most read articles by the same author(s)
- Mr. Raman Kumar, Intelligent Supply Chain Management Using Artificial Intelligence: Models, Challenges, And Future Prospects , International Journal of Modern Computer Science and IT Innovations: Vol. 3 No. 09 (2026): Volume 03 Issue 09
- Mohammad Shuab Siddique , Debugging Billion-Core AI Clusters: Distributed Crash Diagnosis for Heterogeneous Accelerator Systems , International Journal of Modern Computer Science and IT Innovations: Vol. 3 No. 09 (2026): Volume 03 Issue 09
- Chinedu Emmanuel Okafor, A Comprehensive Architecture for Enhancing IoT Security Through Zero Trust Principles , International Journal of Modern Computer Science and IT Innovations: Vol. 3 No. 09 (2026): Volume 03 Issue 09
- Martin Schneider, Diego MartĂnez, A Comparative Benchmark Analysis of Transactional and Analytical Performance in PostgreSQL and MySQL , International Journal of Modern Computer Science and IT Innovations: Vol. 2 No. 10 (2025): Volume 02 Issue 10
- Adrian Miguel Santos, Clarisse Mae Reyes, Integrated Analytical Approaches in Computer Science and Information Technology Systems , International Journal of Modern Computer Science and IT Innovations: Vol. 3 No. 09 (2026): Volume 03 Issue 09
- Mr. Sachin Manekar, A Survey of Retrieval-Augmented Language Models for Knowledge-Intensive Text Applications , International Journal of Modern Computer Science and IT Innovations: Vol. 3 No. 09 (2026): Volume 03 Issue 09
- Serhii Yakhin , Resilience and Scale in .NET Microservices via Message Brokers for Ensuring Fault Tolerance and Scalability in .NET Microservices , International Journal of Modern Computer Science and IT Innovations: Vol. 3 No. 09 (2026): Volume 03 Issue 09
- Sergei Beliachkov , An Authorâs Taxonomy of Customer-Observable Security Controls in SaaS Platforms , International Journal of Modern Computer Science and IT Innovations: Vol. 3 No. 09 (2026): Volume 03 Issue 09
- Rahul van Dijk, Advancing Circular Business Models through Big Data and Technological Integration: Pathways for Sustainable Value Creation , International Journal of Modern Computer Science and IT Innovations: Vol. 2 No. 12 (2025): Volume 02 Issue 12
- Dr. Ahmed R. Mostafa, Prof. Mahmoud A. Taha, AFFORDABLE VISION-BASED SYSTEMS FOR REAL-TIME CHESSBOARD DIGITIZATION , International Journal of Modern Computer Science and IT Innovations: Vol. 2 No. 01 (2025): Volume 02 Issue 01
Similar Articles
- Oleksandr Orlov, Engineering Compliant Enterprise Systems: Architectural Constraints and Quality Practices in Regulated Industries , International Journal of Modern Computer Science and IT Innovations: Vol. 3 No. 07 (2026): Volume 03 Issue 07
- Dr. Rohan S. Whitaker, Predictive and Intelligent HVAC Systems: Integrative Frameworks for Performance, Maintenance, and Energy Optimization , International Journal of Modern Computer Science and IT Innovations: Vol. 2 No. 10 (2025): Volume 02 Issue 10
- Dr. Alejandro MartĂnez, Explainable Artificial Intelligence As A Foundation For Trust, Sustainability, And Responsible Decision-Making Across Business And Healthcare Ecosystems , International Journal of Modern Computer Science and IT Innovations: Vol. 3 No. 01 (2026): Volume 03 Issue 01
- Dr. Mateo Alvarez, SaaS-Driven Digital Transformation and Customer Retention in Hospitality Ecosystems: A Multitheoretical and Socio-Technical Reinterpretation of Service Value Creation , International Journal of Modern Computer Science and IT Innovations: Vol. 2 No. 12 (2025): Volume 02 Issue 12
- Dr. Chinedu Okafor, Dr. Amina Ibrahim Bello, Preparing National Security Systems for the Quantum Era: A Roadmap for Post-Quantum Cryptographic Migration , International Journal of Modern Computer Science and IT Innovations: Vol. 3 No. 08 (2026): Volume 03 Issue 08
- Victor P. Ionescu, EXPLAINABLE ARTIFICIAL INTELLIGENCE AS A FOUNDATION FOR SUSTAINABLE, TRUSTWORTHY, AND HUMAN-CENTRIC DECISION-MAKING ACROSS CONSUMER, SUPPLY CHAIN, AND HEALTHCARE DOMAINS , International Journal of Modern Computer Science and IT Innovations: Vol. 3 No. 02 (2026): Volume 03 Issue 02
- Dr. Markus Vogel, Large Language ModelâDriven Digital Twins for Lean-Aware Manufacturing Execution System Optimization in Industry 4.0 Environments , International Journal of Modern Computer Science and IT Innovations: Vol. 3 No. 01 (2026): Volume 03 Issue 01
- Aarav Mehta, Priya Sharma, Adaptive Identity Security Framework for Agentic AI Systems: Architecture, Implementation, and Performance Evaluation , International Journal of Modern Computer Science and IT Innovations: Vol. 3 No. 09 (2026): Volume 03 Issue 09
- Oliver P. Harrington, Reconceptualizing Enterprise Application Frameworks: ASP.NET Core and the Structural Foundations of Cross-Platform Development , International Journal of Modern Computer Science and IT Innovations: Vol. 2 No. 12 (2025): Volume 02 Issue 12
- Mohammad Shuab Siddique , Debugging Billion-Core AI Clusters: Distributed Crash Diagnosis for Heterogeneous Accelerator Systems , International Journal of Modern Computer Science and IT Innovations: Vol. 3 No. 09 (2026): Volume 03 Issue 09
You may also start an advanced similarity search for this article.