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Developer tools · #jasmine
Learn how to use Jasmine's done() callback to properly test asynchronous code, with a worked example, explanation of Jasmine's waiting mechanism, and common pitfalls to avoid.
Learn how Jasmine's done() callback prevents flaky async tests by pausing specs until asynchronous work finishes, with a concrete setTimeout example and practical verification steps.
jasmine.clock().install() replaces native setTimeout, setInterval and Date with a controllable fake clock. Advance virtual time with clock.tick(ms) to test timer-dependent code synchronously, then uninstall to restore natives and avoid spec leakage.
Jasmine spies let you replace real collaborators with lightweight stand‑ins. This guide shows how to use spyOn, createSpy, and createSpyObj, gives a concrete example, discusses trade‑offs, and offers actionable best‑practice tips.