Software Testing Short Course

Learn software testing to write reliable code that catches bugs before they reach users and costs you time and money. Testing is a core professional skill that separates junior developers from senior engineers who ship with confidence. This course covers unit testing, integration testing, end-to-end testing, assertions, mocking, test-driven development, and code coverage.. Master software testing through bite-sized, swipeable learning tiles — designed for busy people who want to learn on the go.

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About This Software Testing Course

This Software Testing short course on SkillTiles breaks down everything you need to know into 10 structured milestones, each packed with bite-sized learning tiles you can swipe through in under 15 seconds each.

Whether you're a complete beginner or looking to refresh your knowledge, this online software testing course uses AI-powered content to adapt to your learning pace. Each tile delivers a focused concept, example, or quiz — making it perfect for commutes, coffee breaks, or quick study sessions.

Covering 70 key topics across 10 milestones, this course takes you from foundations to practical application. Earn badges as you complete each milestone and track your progress on your learning dashboard.

Course Curriculum

Testing Fundamentals

Unit tests, mocks, and TDD

why test?unit vs integration vs e2ewriting your first testassertions and matchersmocking and spyingtest-driven developmentcode coverage

Unit Testing

Test individual functions and modules

what makes a good unit testAAA pattern (Arrange, Act, Assert)testing pure functionstesting with side effectsparameterized teststest naming conventionstest isolation principles

Mocking & Stubbing

Isolate dependencies in tests

what are mocks, stubs, and spiesmocking modulesmocking API callsmocking timerspartial mockingwhen to mock vs when not tomock verification

Integration Testing

Test components working together

integration vs unit testsdatabase testing strategiesAPI integration teststesting with Dockertest fixtures and factorieshandling external servicesCI pipeline integration tests

End-to-End Testing

Test complete user workflows

Playwright basicsCypress overviewpage object modelhandling async operationsvisual regression testingcross-browser testingflaky test management

Test-Driven Development

Write tests before code

red-green-refactor cyclewriting the first failing testminimal implementationrefactoring with confidenceTDD for new featuresTDD for bug fixeswhen TDD works best

Testing React/UI

Test frontend components

React Testing Librarytesting user interactionstesting hookssnapshot testingaccessibility testingtesting formstesting async components

API Testing

Validate REST and GraphQL APIs

Postman/Insomnia testingsupertest for Node.jscontract testing basicsschema validationload testing overviewAPI test automationtesting webhooks

Code Quality

Measure and improve code quality

code coverage metricsmutation testingstatic analysis toolslinting and formattingcode review for testabilitytechnical debt trackingquality gates in CI

Test Strategy

Build an effective test suite

testing pyramidtest categorizationwhat to test vs what not totesting in productionfeature flags and testingtest maintenance strategiesbuilding a testing culture