PHPUnit

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Handling PHPUnit Deprecations and Upgrades in Legacy Projects Cleanly

Maxim Mironjuk - March 29, 2026

Anyone lifting a grown PHP project onto PHPUnit 10 or 11 runs into a flood of deprecation notices, changed assertion signatures, and removed interfaces. This article shows a structured path through the migration, without endangering the running test suite and without having to touch every test class at once.

PHPUnit Testing/E2E

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Detecting and Systematically Eliminating Flaky Tests in PHPUnit

Maxim Mironjuk - March 29, 2026

A test that sometimes passes and sometimes fails is worse than no test at all. It erodes trust in the entire test suite, forces manual re-runs and hides real regressions behind noise. Flaky tests arise from specific root causes, and every single one of them can be fixed for good.

Magento Docker PHPUnit

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PHPUnit Magento Integration Tests: Setup and Execution

Maxim Mironjuk - March 21, 2026

Anyone building Magento modules without integration tests only notices regressions in staging or in production. The Magento Test Framework provides a complete environment with real database isolation, automatic fixture management and the full Magento DI container, provided it is set up correctly.

GraphQl PHPUnit REST-API

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Testing GraphQL and REST Endpoints in Magento with PHPUnit

Maxim Mironjuk - March 17, 2026

Magento 2 exposes complex business logic through REST and GraphQL APIs. Anyone implementing custom endpoints, schema extensions, or API policies needs reliable integration tests, not manual Postman clicking, not "works on staging, fingers crossed".

Magento PHPUnit Testing/E2E

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Unit Test vs. Integration Test vs. Functional Test in PHP Projects

Maxim Mironjuk - March 08, 2026

Most PHP projects either have too many unit tests for code that depends on database state, or too few tests at the right level. The test pyramid is not an academic concept, it is a practical tool for deciding which test type solves which problem most efficiently.

PHPUnit PHP

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Using PHPStan, Psalm and PHPUnit Together as a Quality Chain

Maxim Mironjuk - January 22, 2026

PHPUnit finds runtime errors, but only if the corresponding tests exist. PHPStan and Psalm find type errors statically, before the code is ever executed. Only the combination of both approaches closes the gaps that each tool leaves open on its own. This article shows how to integrate PHPStan, Psalm and PHPUnit as a continuous quality chain in PHP projects.

Magento PHPUnit PHP

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Architecture Tests with PHPUnit: Checking Dependencies and Module Boundaries

Maxim Mironjuk - January 18, 2026

Architecture rules that only exist in documents get broken. With PHPUnit, PHP-Arch and the Reflection API, layer boundaries, module dependencies and design rules can be formulated as executable tests, tests that fire immediately when a class calls into the wrong layer or a module introduces a forbidden dependency.

PHPUnit REST-API PHP

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PHPUnit Test Strategies for APIs and DTO Mapping

Maxim Mironjuk - January 16, 2026

REST APIs and DTO mapping are two of the most common sources of bugs in PHP projects, and two of the hardest areas to test when the strategy is missing. Contract tests, schema validation and clean HTTP stubbing patterns make API tests reproducible, fast and meaningful.

Magento PHPUnit Testing/E2E

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Applying TDD in PHP Realistically Instead of Just Talking About It

Maxim Mironjuk - January 01, 2026

Test-Driven Development is often either demonized or praised as a cure-all. The reality in PHP projects is more nuanced: TDD works brilliantly for certain classes of problems and creates unnecessary overhead for others. This article shows where the difference lies, with code, not theory.

Magento PHPUnit Testing/E2E

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PHPUnit Parallel Test Execution and Its Pitfalls

Maxim Mironjuk - December 23, 2025

Parallel PHPUnit runs save time, but they place demands on database isolation, fixture design and configuration that many teams only discover after the first painful race condition. This article shows how to set up paratest correctly, why shared state is the most common source of errors, and how to make test suites genuinely parallel-safe.