Jasmine vs NUnit

Free and open source

Free and open source

Free and open source. You pay in engineering time and CI minutes.

Free and open source. You pay in engineering time and CI minutes.

Everything, self-hosted

Everything, self-hosted

Established

OSS community · since 2010

Widely used

.NET Foundation · since 2002

• Self-contained: spies, clocks and matchers with no extra packages.
• Runs directly in a browser without bundling.
• Extremely stable API — old suites keep working.

• The most expressive built-in assertion library in .NET.
• Familiar attribute model for teams migrating from older frameworks.
• Very stable, very long-lived.

• Feels dated; snapshot testing and modern mocking are absent or bolted on.
• Momentum has moved to Jest and Vitest, including within the Angular ecosystem.
• Weaker TypeScript ergonomics than newer runners.

• Shared test-class instances mean state can leak between tests unless you are careful.
• New Microsoft templates default to xUnit, so it is drifting from the mainstream.
• Attribute-heavy style feels dated.

Existing Angular codebases and browser-native test setups.

Existing .NET codebases already standardised on NUnit.