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Tutorials, how-tos and deep dives on AI, .NET, C#, cloud and developer tools, written by the community.
Learn how to test form validation and error messages in web applications, including required fields, formats, length limits, business rules, and cross-field validation.
Learn how to identify overlooked edge cases in manual testing using boundary value analysis, unusual inputs, real user behavior, and dependency failures.
Learn a structured approach to exploratory testing when requirements are incomplete, including gathering context, investigating user workflows, identifying risks, and documenting findings.
Learn how to identify slow tests, analyze setup, execution, and teardown costs, track duration trends, and reduce CI pipeline delays without losing coverage.
Learn the differences between smoke testing and sanity testing, when to use each approach, and how they apply to practical QA scenarios.
Learn the differences between functional and regression testing, with e-commerce examples and test cases to help QA teams validate releases.
Learn how to write effective test cases for real-world applications using login examples, test scenarios, positive and negative testing, boundary values, and equivalence partitioning.
Learn how to use Playwright screenshot assertions for visual regression testing, configure comparison thresholds, manage baselines, and test responsive UI layouts.
Learn how Pact contract testing verifies consumer-provider API interactions in .NET microservices, with consumer tests, provider verification, and contract workflow guidance.
Learn how to test payment API retries safely using idempotency keys, simulated network failures, and C# examples to prevent duplicate charges.
Learn how to safely evaluate experimental WinUI controls using feature flags, isolated XAML, UI automation, accessibility checks, and environment-based testing.
Learn how to test distributed workflows when workers crash, including failure injection, process termination, durable state checks, idempotency, and safe recovery.
Configure GitHub Actions to build and test a .NET application on Windows, Linux, and macOS, and diagnose operating-system-specific CI failures.
Learn how to find website accessibility problems before release using Lighthouse, browser tools, automated scans, Playwright, keyboard testing, and practical WCAG checks.
Learn how to capture and inspect Playwright traces to diagnose flaky CI tests using test steps, DOM snapshots, network requests, and console output.
Learn how to mock external HTTP APIs in .NET integration tests with a custom HttpMessageHandler, HttpClient, and xUnit to test successful and error responses reliably.
Learn how to mock external HTTP APIs in .NET integration tests with a custom HttpMessageHandler, including success, error, and not-found response scenarios.
Learn how to capture and inspect Playwright traces to diagnose flaky tests, investigate failures, and identify timing, network, and UI issues in local and CI runs.
Learn how to test .NET WebSocket clients for message handling, fragmented frames, network failures, server shutdowns, and reconnection behavior using unit and integration tests.
Learn how to capture and inspect Playwright traces to diagnose flaky browser tests, investigate timing and network issues, and improve test reliability.
Learn how to test payment retry logic in C# using idempotency keys, explicit payment states, and simulated timeout scenarios to prevent duplicate charges.
Learn how to configure and troubleshoot MSTest UI tests for WinUI 3 applications running in Windows AppContainer, including packaging, permissions, and test-host communication.
Learn how to configure MSTest UI-thread tests for packaged and unpackaged WinUI 3 apps using MSTest.Sdk and Microsoft.Testing.Platform.
Learn how to use MSTest to validate trimmed and Native AOT .NET applications by testing published executables and identifying AOT compatibility issues.
Learn how MSTest UI testing can automate UWP and WinUI 3 desktop workflows, use stable automation identifiers, and avoid flaky tests with condition-based waiting.
Learn how MSTest 4.5 and Microsoft.Testing.Platform run UWP and WinUI 3 UI tests on the application UI dispatcher, including packaged and unpackaged hosting models.
Compare software test automation and Salesforce test automation, including tools, benefits, workflows, challenges, and key differences for businesses.
Learn how to read a C# memory dump with dotnet-dump, analyze heap objects and GC roots, and find production memory retention and leak problems.
Learn how Microsoft.Testing.Platform can help detect flaky tests in .NET CI/CD pipelines using repeatable test execution, diagnostics, reporting, and automated analysis.
Compare GitHub Copilot code review with human review for Azure Repos, evaluating bug detection, false positives, review quality, consistency, and developer productivity.
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