spyCall.calledOn(obj);

Returns true when obj was context (this) for the call.

<<< ../../../.vitepress/tests/docs/spy-call/api/called-on-1.test.js

Using a matcher

calledOn also accepts a matcher spyCall.calledOn(sinon.match(fn)) (see matchers).

<<< ../../../.vitepress/tests/docs/spy-call/api/called-on-2.test.js

See also

• https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/this