How would you diagnose and optimize slow Angular component tests?
Source: angular.devadvanced
Tests Angular test economics and runner overhead. Strong answers profile with Vitest, swap Karma for jsdom/happy-dom, mock services, and reduce TestBed recompilation via targeted imports.
Tests whether you understand Angular testing economics beyond generic advice. A strong response starts by profiling with Vitest reporters to isolate slow suites, then migrates from Karma to jsdom or happy-dom for Node-based execution, mocks heavy services and HTTP to avoid real I/O, and minimizes TestBed recompilation by importing only required declarations or using setupFiles and providersFile for global configuration.
Read the original → angular.dev
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- #testing
- #performance
- #vitest
- #senior
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