AI Software Testing Startups: The Definitive 2026 Guide — QA Enters the Agentic Era

AI agents are now the protagonists of QA. A deep dive into 40+ startups reshaping software testing across four categories in 2026.

[Android] "ES Task Manager" for Memory Release and Task Termination

Using "ES Task Manager" to kill app tasks per screen and check for crashes or broken navigation on resume.

[Android] How to Test In-App Purchases in Debug Build

Sign the debug APK with the release key and use Google Play alpha or beta tracks to test in-app purchases.

Managing Multiple k6 Versions with asdf

Installing and managing multiple k6 load-testing versions on M1 macOS with the asdf-k6 plugin.

Application for load testing of API / Web services built on AWS

When AWS-side approval is or isn't needed for load testing APIs or web services on AWS.

Reading Notes: 'Engineers in VOYAGE ― Technologists Engineering Business' Supervised by VOYAGE GROUP

Reading notes on 'Engineers in VOYAGE,' looking inside VOYAGE GROUP's engineering culture.

Books I Read to Learn About Software Testing and QA Engineering

Books I read to get into software testing and QA engineering while forming a new QA team.

[Ruby] For file uploads, use 'CarrierWave'

Notes on the CarrierWave gem for file uploads in Rails, plus how to test uploads with RSpec.

[CircleCI 2.0] Rails 5.x Fix for bundler: failed to load command: rspec ~ NoMethodError: undefined method `captures' for nil:NilClass Error

Fixing the CircleCI 2.0 rspec captures-nil error on Rails 5.x by dropping the test-split step from config.yml.

[CircleCI 2.0] Rails 5.x + Webpacker Configuration Job Setup Method for Running Rspec Tests

A working config.yml for running Rspec on Rails 5.x + Webpacker on CircleCI 2.0's free plan, with notes on the gotchas.

Free Books for Learning Software Testing and QA (Quality Assurance) in Waterfall Development

Two free Japanese books that helped me get up to speed on software testing and QA in waterfall development.

[iOS] CrashMonkey - Automatic Testing with Random Operations

Trying CrashMonkey for random-operation automated iOS testing, plus fixing the xcode-select startup error.

Sample Module Code for Getting Amazon Cognito Access Token with k6 Load Testing Tool

Sample k6 code that gets an Amazon Cognito access token in setup and runs authenticated load tests.

Load Testing Tool k6 --compatibility-mode=base Sample Code

Sample code for running the k6 load testing tool faster with --compatibility-mode=base.

Load Testing Tool k6 Beginner's Guide Summary

A link roundup of beginner articles, official docs, and follow-up knowledge for the k6 load testing tool.

Picking an OSS Alternative After LocalStack Was Archived — A Comparison of MiniStack, Floci, kumo, fakecloud, and moto

LocalStack's OSS repository was archived and the Community Edition image was rolled into an auth-required unified image, leaving many teams who had built their CI/CD and docker-compose flows around it scrambling for a replacement. This post lines up the newcomers (MiniStack, Floci, kumo, fakecloud) and the durable test-side tools (moto, ElasticMQ, S3Mock, DynamoDB Local), compares them on license, service coverage, and migration cost, and maps each candidate to a workload.

[Mocha] Execution order of before, beforeEach, after, afterEach

The execution order of Mocha's before, beforeEach, afterEach, and after hooks with sample code.

[Mongoose][timekeeper] TypeError: Undefined type `FakeDate` at `fieldName`

Calling new mongoose.Schema inside timekeeper.freeze throws a FakeDate TypeError — cause and fix.

[Node.js] Stubbing Mongoose virtual attributes with sinon

Stub Mongoose virtual attributes from tests with sinon.stub plus stub.withArgs.

NestJS Unit Test and E2E Test File Placement

From NestJS official samples: unit tests go under src/, end-to-end tests go under e2e/.

Is 'Operational acceptance testing (OAT)' Appropriate English for System '動作確認'?

Learning that Operational acceptance testing (OAT) is a decent English equivalent for '動作確認'.

[PHP] Lime Testing Environment Configuration Method

How to grab lime.php and useful reference links for using symfony's Lime testing library.

[PHP] Installing PEAR and PHPUnit on Mac

Installing PEAR and PHPUnit on Mac OS X Mountain Lion.

Event Report: "Test Automation Cases That Reflect QA Engineers' Thinking"

How realistic is the dream of "automating all tests with AI"? From the importance of "expected quality" and complex test automation cases for phone services, I gained grounded insights into practical AI utilization.

Ruby on Rails + Rspec + Capybara Initial Setup

Set up RSpec and Capybara in Rails 5 and run your first Feature test end-to-end.

[Ruby][FactoryGirl] Could not find a valid mapping for #<User

A record of running into the "Could not find a valid mapping for User" error with FactoryGirl and Devise.

[Rails][FactoryGirl] Error: Factory already registered: xxx

A short note on the "Factory already registered: xxx" error raised by FactoryGirl.

[Ruby on Rails] How to Skip Creating Test::Unit Files When Creating an App

Use `rails new APP -T` to skip Test::Unit file generation in Rails 3.2 when you plan to use RSpec.

[Ruby on Rails] File Upload Methods in RSpec

A list of file-upload helper methods available when testing Rails controllers with RSpec.

Ruby on Rails4 + Mongoid + RSpec

Bootstrapping a Rails 4 app with Mongoid and RSpec, including DatabaseCleaner wiring.

Reading Notes: 'Amazon Web Services Load Testing Introduction - Understanding How to Draw Out Cloud Performance' by Narikawa Taruha

Reading notes on 'Amazon Web Services Load Testing Introduction' — a starting point for load testing on AWS.

Reading Notes『マンガでわかるソフトウェアテスト入門 テスターちゃん Vol.1』(Introduction to Software Testing with Manga: Tester-chan Vol.1) by Mineo Matsutani

Reading notes on 'Tester-chan Vol.1' — a manga-format introduction to software testing, recommended for non-engineers.

[RSpec] How to Send Ajax Requests in Controller Tests

A short memo on using RSpec's xhr helper to send Ajax GET and POST requests in controller specs.

[RSpec] Various ways to use Devise in test code

Rails + RSpec notes on testing Devise-protected controllers by stubbing current_user in a before block.

[RSpec] Specifying Seed File Loading Path with SeedFu.fixture_paths for SeedFu.seed

A spec_helper snippet showing how to load seeds from multiple directories via SeedFu.fixture_paths before RSpec runs.

[RSpec] Stubbing Constants with stub_const

How to stub constants in RSpec with stub_const, including nested constants under a Class or Module.

[RSpec] Stubbing Time.now

A tiny snippet for stubbing Time.now in Rails + RSpec to return a fixed timestamp.

[RSpec] Differences between stub and mock

A link roundup of references that helped me get stubs vs. mocks straight in RSpec.

[RSpec] How to Test Private Methods

How to test private methods in Rails + RSpec by invoking them via Object#send.

[Ruby] Convenient gem 'faker' for creating sample data

A short memo of reference links for 'faker', a Ruby gem that makes test and sample data generation easy.

[Ruby] Use 'sunspot' for full-text search engine Solr

Reference links for the sunspot gem, which connects Rails apps to the Solr full-text search engine, including RSpec testing tips.

[Ruby] RSpec Beginner Articles Summary

A curated list of beginner references for RSpec, grouped by topic (views, requests, syntax, config).

A Systematic Guide to Software Testing Types — ISTQB-Based Test Levels, Types & Techniques

A systematic overview of software testing types based on the ISTQB framework. Covers test levels (unit, integration, system, system integration, acceptance), test types (functional, non-functional, regression), test design techniques, and the test pyramid.

Specification-Driven Code Generation with LLMs — An Empirical Study on Telling AI What to Build

A look at an empirical study applying specification-driven approaches to LLM code generation. The CURRANTE VSCode extension enforces a spec-test-implement workflow, enabling quantitative analysis of how human intervention patterns affect generated code quality.

How to Transpile ES6 to ES5 with webpack + Babel

Sample webpack + Babel setup to transpile ES6 to ES5 for use with the k6 load testing tool.

How to Test Windows 10 + Internet Explorer 11 on macOS [VirtualBox Edition]

Set up a Windows 10 + IE11 testing VM on macOS with VirtualBox.

xk6-cognito verification -> Got errors and it didn't work

Trying the xk6-cognito k6 module ended in a context.Context conversion error — here's the reproduction and known issue.