spyCall.returned(value);

Returns true, when the spied function returned the provided value on this call.

Uses deep comparison for objects and arrays. Use spyCall.returned(sinon.match.same(obj)) for strict comparison (see matchers).

import t from "tap";
import sinon from "sinon";

t.test(
  `spyCall.returned returns true,
    when spied function returned value on this call`,
  (t) => {
    const pie = "apple pie";
    const f = sinon.fake.returns(pie);

    f();

    const sc = f.firstCall;

    t.ok(sc.returned(pie));

    t.end();
  }
);