WebFuzzing/EvoMaster
Oct 2024 – Feb 2026
12 Months active
Languages Used
JavaKotlinMarkdownThriftSQL
Technical Skills
End-to-End TestingJavaJava DevelopmentKotlin DevelopmentSoftware TestingTest Automation
Man Zhang
PROFILE
Man Zhang
Over the past year, Man Zhang engineered core features and reliability improvements for the WebFuzzing/EvoMaster repository, focusing on automated test generation, scheduling, and flakiness detection for backend systems. He designed and evolved APIs, implemented robust schedule task orchestration, and stabilized RPC and database test infrastructure using Java and Kotlin. His work included cross-language support, advanced DTO design, and migration of JSON processing from Gson to Jackson. By addressing test flakiness, enhancing configuration management, and expanding end-to-end coverage, Man delivered a more maintainable, scalable, and reliable testing platform, reducing operational risk and supporting broader integration scenarios for fuzzer-driven quality assurance.
Overall Statistics
Feature vs Bugs
62%Features
Repository Contributions
180Total
Bugs
32
Commits
180
Features
53
Lines of code
10,971
Activity Months12
Your Network
18 peopleShared Repositories
18
Work History
February 2026
42 Commits • 16 Features
Feb 1, 2026February 2026 (WebFuzzing/EvoMaster) focused on strengthening configurability, reliability, and cross-language support while expanding test coverage and stability. Key business value was delivered through a more automated, configurable pipeline, expanded language support, and significantly reduced risk from flaky tests and misconfigurations. Key features delivered include the following. Documentation and Configuration Improvements, API and Configuration Enhancements, Cross-language Support (Python and JavaScript), and expanded testing infrastructure with unit tests, BB end-to-end tests, and EMTestUtils refactor. In addition, several robustness and stability improvements were implemented via seeds/config updates and CFG improvements. This combination reduces onboarding time, accelerates deployment, and lowers the cost of quality assurance. Overall impact: Improved configurability and automation reduce operational overhead; broader language support opens new integration scenarios; test stability and coverage reduce release risk and increase confidence in EvoMaster as a reliable tooling option for fuzzer-driven testing. Technologies/skills demonstrated: Java, Python, JavaScript support; API design and configuration management (setOption, config updates); test engineering (unit tests, e2e tests, test utilities); environment handling utilities; CFG/config robustness; documentation discipline.
42 Commits • 16 Features
Feb 1, 2026February 2026 (WebFuzzing/EvoMaster) focused on strengthening configurability, reliability, and cross-language support while expanding test coverage and stability. Key business value was delivered through a more automated, configurable pipeline, expanded language support, and significantly reduced risk from flaky tests and misconfigurations. Key features delivered include the following. Documentation and Configuration Improvements, API and Configuration Enhancements, Cross-language Support (Python and JavaScript), and expanded testing infrastructure with unit tests, BB end-to-end tests, and EMTestUtils refactor. In addition, several robustness and stability improvements were implemented via seeds/config updates and CFG improvements. This combination reduces onboarding time, accelerates deployment, and lowers the cost of quality assurance. Overall impact: Improved configurability and automation reduce operational overhead; broader language support opens new integration scenarios; test stability and coverage reduce release risk and increase confidence in EvoMaster as a reliable tooling option for fuzzer-driven testing. Technologies/skills demonstrated: Java, Python, JavaScript support; API design and configuration management (setOption, config updates); test engineering (unit tests, e2e tests, test utilities); environment handling utilities; CFG/config robustness; documentation discipline.
February 2026
January 2026
27 Commits • 11 Features
Jan 1, 2026January 2026: Delivered a Flakiness Detection Framework for EvoMaster enabling configurable flakiness checks, a FlakinessDetector singleton, and HTTP action flakiness identification with unit tests. Enhanced test reliability with Flaky Test Handling, flaky assertions in JUnit, end-to-end tests, list tests, and plain-text response handling, plus runnable usage example. Migrated JSON processing from Gson to Jackson; added initial project documentation; renamed API for clarity (detectFlakiness -> handleFlakiness); introduced flakyPhase and derive features. Fixed critical bugs across core module, line separators, and flaky tests. Overall, these changes improve reliability, observability, and developer productivity, while delivering clearer APIs and better data handling.
January 2026
27 Commits • 11 Features
Jan 1, 2026January 2026: Delivered a Flakiness Detection Framework for EvoMaster enabling configurable flakiness checks, a FlakinessDetector singleton, and HTTP action flakiness identification with unit tests. Enhanced test reliability with Flaky Test Handling, flaky assertions in JUnit, end-to-end tests, list tests, and plain-text response handling, plus runnable usage example. Migrated JSON processing from Gson to Jackson; added initial project documentation; renamed API for clarity (detectFlakiness -> handleFlakiness); introduced flakyPhase and derive features. Fixed critical bugs across core module, line separators, and flaky tests. Overall, these changes improve reliability, observability, and developer productivity, while delivering clearer APIs and better data handling.
November 2025
1 Commits
Nov 1, 2025In November 2025, delivered a reliability improvement for EvoMaster's database test generation by correcting the handling of equivalent foreign key table names during database resets, increasing stability of generated tests.
1 Commits
Nov 1, 2025In November 2025, delivered a reliability improvement for EvoMaster's database test generation by correcting the handling of equivalent foreign key table names during database resets, increasing stability of generated tests.
November 2025
September 2025
4 Commits • 1 Features
Sep 1, 2025Month: 2025-09 — EvoMaster (WebFuzzing). Focused on strengthening object-field modeling and impact analysis to reduce false positives/negatives and support future fixed-field handling. Key features delivered: - Additional Fields Support in ObjectGene: introduced isAdditionalField to identify additional fields; adjusted RestResourceIndividualDisabledHMTest to skip checks for these fields; added a filter to exclude flexible genes from the flatView operation in the same test class. Commit: 042539884312978791092c06b6b2c71673522c41. Major bugs fixed: - ObjectGeneImpact: fix and refine impact calculation for fixed fields, and plan for future handling of fixed-field genes. Refined impact analysis to focus on fixed fields, excluding additional properties for future implementation; ensure synchronization of impact applies only to fixed fields of an ObjectGene; includes future-oriented TODO for handling genes within fixed fields. Commits: 7d0964daf95c89e3e0ffcc3dd7aeb87096f107bc; d6602467edb9ad6baaecb8d7d82d3169d6602c66; b439ae3124a4906da726250a06e069696a7ee083. Overall impact and accomplishments: - Improved accuracy and stability of object-field impact analysis, aligning with product requirements and reducing test noise. This work lays groundwork for future enhancements to fixed-field gene handling and more predictable API testing outcomes. Technologies/skills demonstrated: - Java/back-end engineering, object-model improvements (ObjectGene), targeted test adjustments (RestResourceIndividualDisabledHMTest), and traceable commit-based changes across features and fixes.
September 2025
4 Commits • 1 Features
Sep 1, 2025Month: 2025-09 — EvoMaster (WebFuzzing). Focused on strengthening object-field modeling and impact analysis to reduce false positives/negatives and support future fixed-field handling. Key features delivered: - Additional Fields Support in ObjectGene: introduced isAdditionalField to identify additional fields; adjusted RestResourceIndividualDisabledHMTest to skip checks for these fields; added a filter to exclude flexible genes from the flatView operation in the same test class. Commit: 042539884312978791092c06b6b2c71673522c41. Major bugs fixed: - ObjectGeneImpact: fix and refine impact calculation for fixed fields, and plan for future handling of fixed-field genes. Refined impact analysis to focus on fixed fields, excluding additional properties for future implementation; ensure synchronization of impact applies only to fixed fields of an ObjectGene; includes future-oriented TODO for handling genes within fixed fields. Commits: 7d0964daf95c89e3e0ffcc3dd7aeb87096f107bc; d6602467edb9ad6baaecb8d7d82d3169d6602c66; b439ae3124a4906da726250a06e069696a7ee083. Overall impact and accomplishments: - Improved accuracy and stability of object-field impact analysis, aligning with product requirements and reducing test noise. This work lays groundwork for future enhancements to fixed-field gene handling and more predictable API testing outcomes. Technologies/skills demonstrated: - Java/back-end engineering, object-model improvements (ObjectGene), targeted test adjustments (RestResourceIndividualDisabledHMTest), and traceable commit-based changes across features and fixes.
May 2025
5 Commits • 2 Features
May 1, 2025May 2025 monthly summary for WebFuzzing/EvoMaster focused on stability, robustness, and test resilience. Delivered three core items across SutController, database schema extraction, and JSON/RPC parsing/testing. These changes reduce operational risk in test orchestration, improve data handling reliability, and strengthen resilience to unknown inputs in RPC workflows, delivering business value through more consistent test results and easier maintenance.
5 Commits • 2 Features
May 1, 2025May 2025 monthly summary for WebFuzzing/EvoMaster focused on stability, robustness, and test resilience. Delivered three core items across SutController, database schema extraction, and JSON/RPC parsing/testing. These changes reduce operational risk in test orchestration, improve data handling reliability, and strengthen resilience to unknown inputs in RPC workflows, delivering business value through more consistent test results and easier maintenance.
May 2025
April 2025
11 Commits • 2 Features
Apr 1, 2025April 2025 highlights for WebFuzzing/EvoMaster focused on delivering robust task analysis, hardened RPC validation, and strengthened SQL initialization/testing to improve reliability, traceability, and test coverage.
April 2025
11 Commits • 2 Features
Apr 1, 2025April 2025 highlights for WebFuzzing/EvoMaster focused on delivering robust task analysis, hardened RPC validation, and strengthened SQL initialization/testing to improve reliability, traceability, and test coverage.
March 2025
19 Commits • 2 Features
Mar 1, 2025March 2025 performance review for WebFuzzing/EvoMaster: Focused on reliability, correctness, and test infrastructure. Key features delivered include improved resource binding accuracy and a refactored test initialization workflow; major bugs fixed include robust schedule task execution and stabilized foreign key/impact logic. The work increases system resilience, lowers risk of cascading failures, and accelerates CI feedback with stronger observability and test coverage.
19 Commits • 2 Features
Mar 1, 2025March 2025 performance review for WebFuzzing/EvoMaster: Focused on reliability, correctness, and test infrastructure. Key features delivered include improved resource binding accuracy and a refactored test initialization workflow; major bugs fixed include robust schedule task execution and stabilized foreign key/impact logic. The work increases system resilience, lowers risk of cascading failures, and accelerates CI feedback with stronger observability and test coverage.
March 2025
February 2025
11 Commits • 2 Features
Feb 1, 2025February 2025 (WebFuzzing/EvoMaster): Focused on stabilizing the RPC test infrastructure and laying groundwork for cross-protocol scheduling. Delivered concrete reliability improvements across RPCEndpoints and the test-generation pipeline, improved error handling and logging, addressed null-safety and type-mapping issues, and initiated planning to extend scheduling to REST and GraphQL. These efforts reduce test flakiness, accelerate feedback, and position the platform for more scalable and balanced test workloads.
February 2025
11 Commits • 2 Features
Feb 1, 2025February 2025 (WebFuzzing/EvoMaster): Focused on stabilizing the RPC test infrastructure and laying groundwork for cross-protocol scheduling. Delivered concrete reliability improvements across RPCEndpoints and the test-generation pipeline, improved error handling and logging, addressed null-safety and type-mapping issues, and initiated planning to extend scheduling to REST and GraphQL. These efforts reduce test flakiness, accelerate feedback, and position the platform for more scalable and balanced test workloads.
January 2025
31 Commits • 12 Features
Jan 1, 2025January 2025 Monthly Summary for WebFuzzing/EvoMaster: Delivered a key feature for calculating string similarity scores using a table name, stabilized the codebase with targeted merge-related and general fixes, and advanced the orchestration of scheduled tasks through API evolution and cross-layer fixes. Strengthened test coverage and reliability with new tests and updated E2E/test suites, and improved documentation for maintainability. Overall impact: improved matching accuracy and data quality, more reliable task automation, and higher code quality, enabling faster delivery cycles and reduced production risk. Technologies/skills demonstrated: API design and evolution, cross-component debugging, end-to-end testing and test generation, driver/remote invocation patterns, code documentation and maintainability practices.
31 Commits • 12 Features
Jan 1, 2025January 2025 Monthly Summary for WebFuzzing/EvoMaster: Delivered a key feature for calculating string similarity scores using a table name, stabilized the codebase with targeted merge-related and general fixes, and advanced the orchestration of scheduled tasks through API evolution and cross-layer fixes. Strengthened test coverage and reliability with new tests and updated E2E/test suites, and improved documentation for maintainability. Overall impact: improved matching accuracy and data quality, more reliable task automation, and higher code quality, enabling faster delivery cycles and reduced production risk. Technologies/skills demonstrated: API design and evolution, cross-component debugging, end-to-end testing and test generation, driver/remote invocation patterns, code documentation and maintainability practices.
January 2025
December 2024
2 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary for WebFuzzing/EvoMaster focusing on testing enhancements for the Fake Mock Object Service. Delivered feature: Fake Mock Object Service Testing Enhancements, including a new RPC to retrieve completed tasks and an updated backdoor method to accept a schedule task parameter. This work included dependency updates to the Thrift compiler/library to enable testing enhancements and data handling for the fake service. No production bugs reported this month; primary work targeted reliability and data-flow improvements in test mocks. Overall impact includes improved test coverage, faster iteration cycles, and more realistic mock scenarios.
December 2024
2 Commits • 1 Features
Dec 1, 2024December 2024 monthly summary for WebFuzzing/EvoMaster focusing on testing enhancements for the Fake Mock Object Service. Delivered feature: Fake Mock Object Service Testing Enhancements, including a new RPC to retrieve completed tasks and an updated backdoor method to accept a schedule task parameter. This work included dependency updates to the Thrift compiler/library to enable testing enhancements and data handling for the fake service. No production bugs reported this month; primary work targeted reliability and data-flow improvements in test mocks. Overall impact includes improved test coverage, faster iteration cycles, and more realistic mock scenarios.
November 2024
24 Commits • 4 Features
Nov 1, 2024November 2024 — WebFuzzing/EvoMaster: Implemented core schedule task framework, strengthened test infrastructure, and fixed critical issues to boost reliability and observability. Key features include new Schedule Task DTOs and lifecycle with execution tracking, Schedule Task Actions and Clusters, core schedule task processing and RPC wiring, and a configurable Schedule Task sampling mechanism. Major bug fixes addressed updates to schedule tasks, RPC test outputs, generic fixes, and null-check issues. The work delivers tangible business value: more predictable scheduling, improved test coverage, easier maintenance, and clearer task-tracking signals, enabling faster iteration and more reliable test runs. Technologies demonstrated include advanced DTO design, immutable state handling via extraInfo, RPC path integration, seeded task support, and robust test/refactor practices.
24 Commits • 4 Features
Nov 1, 2024November 2024 — WebFuzzing/EvoMaster: Implemented core schedule task framework, strengthened test infrastructure, and fixed critical issues to boost reliability and observability. Key features include new Schedule Task DTOs and lifecycle with execution tracking, Schedule Task Actions and Clusters, core schedule task processing and RPC wiring, and a configurable Schedule Task sampling mechanism. Major bug fixes addressed updates to schedule tasks, RPC test outputs, generic fixes, and null-check issues. The work delivers tangible business value: more predictable scheduling, improved test coverage, easier maintenance, and clearer task-tracking signals, enabling faster iteration and more reliable test runs. Technologies demonstrated include advanced DTO design, immutable state handling via extraInfo, RPC path integration, seeded task support, and robust test/refactor practices.
November 2024
October 2024
3 Commits
Oct 1, 20242024-10 — WebFuzzing/EvoMaster: Focused on stabilizing the test suite for Spring RPC Thrift services. Implemented deterministic seeds, improved seeding logic, and added descriptive test target IDs to reduce flakiness and enhance traceability. These changes yielded more reliable test generation, faster CI feedback, and improved maintainability of the test infrastructure.
October 2024
3 Commits
Oct 1, 20242024-10 — WebFuzzing/EvoMaster: Focused on stabilizing the test suite for Spring RPC Thrift services. Implemented deterministic seeds, improved seeding logic, and added descriptive test target IDs to reduce flakiness and enhance traceability. These changes yielded more reliable test generation, faster CI feedback, and improved maintainability of the test infrastructure.
Activity
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Quality Metrics
Correctness84.2%
Maintainability84.4%
Architecture80.6%
Performance75.6%
AI Usage21.4%
Skills & Technologies
Programming Languages
JavaKotlinMarkdownSQLThrift
Technical Skills
API DesignAPI DevelopmentAPI IntegrationAPI TestingAPI developmentAPI testingBackend DevelopmentBug FixingCode GenerationCode OrganizationCode RefactoringConfiguration ManagementCore JavaDTO DesignData Transfer Objects
Repositories Contributed To
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