Author: Himanshu Mandhyan
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What is a mock server? How it works, setup and tools
A mock server answers your app’s API calls with responses you control, so you can build and test without waiting on the real backend. Here is how it works and how to set one up.
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Functional vs regression testing: Key differences
Functional testing checks that a feature works the way the requirements say. Regression testing checks that features which already worked still work after a code change. Put simply, functional testing asks "does this work?" and regression testing asks "did we just break something?" The two get mixed up because they often use the same test…
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Automated functional testing: How it works and tools
Automated functional testing means using scripts or tools to check that each feature of an application does what the requirements say, without a person clicking through every step. The tool sends the inputs, compares the result with what was expected and flags anything that breaks, on every build if you want it to. That is…
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Regression Testing vs Integration Testing: Key Differences
Here is a situation most backend teams have lived through. A developer changes how the user service formats dates. It is a tiny change: one line, a cleaner ISO format, every unit test still green. The pull request gets approved in five minutes. Two days later, the billing service starts failing to generate invoices, because…
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Integration Testing vs Functional Testing: Key Differences
Ask five engineers whether a test is "functional" or "integration" and you will probably get three answers. That is not because people are confused. It is because the same test can honestly be both. Here is the short version. Integration testing checks that components work together. Functional testing checks that the software does what the…
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14 best API mocking tools in 2026 (open source and paid)
Your frontend is ready, but the backend endpoint it depends on ships next sprint. Your QA team wants to test a payment flow, but the third party sandbox is down again. Your CI pipeline fails twice a week because a staging database returned different data. All three problems have the same fix: an API mocking…
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10 best BDD testing tools in 2026 (compared by language)
For years, picking a BDD testing tool was a two-option decision: Cucumber if you wrote Java, JavaScript, or Ruby, and SpecFlow if you lived in .NET. That changed when SpecFlow reached end of life in December 2024, and newer stacks like Playwright and Go now have their own BDD options. This guide compares the 10…
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Bruno API testing: a complete guide (2026)
Bruno is an open source, offline-first API client that stores your API collections as plain text files inside your Git repo. It gives you a fast GUI for building and sending REST, GraphQL, gRPC, and WebSocket requests, plus a scripting layer for writing tests against the responses. This guide covers Bruno API testing from install…
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What Is a Test Bed in Software Testing? A Practitioner’s Guide
Every tester has lost an afternoon to an environment that would not behave. The code was fine. The suite was fine. The problem was the ground the tests ran on. That ground has a name, and getting it right is quietly one of the highest leverage things a QA team can do. It is called…
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Bug Life Cycle in Software Testing: Every Stage Explained (2026)
The bug life cycle (defect life cycle) is the sequence of states a defect moves through from discovery to closure. Typical stages are New, Assigned, Open, Fixed, Retest, and Closed, with additional paths for Reopened, Deferred, or Rejected bugs. It gives teams a shared, trackable workflow for managing defects to resolution. Every bug that gets…