spyCall.calledImmediatelyBefore(otherCall)

Returns true, when the spy call occurred before another call, and no calls to any spy occurred in between.

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

t.test(
  `spyCall.calledImmediatelyBefore returns true,
    when instance is called immediately before the argument`,
  (t) => {
    const f1 = sinon.fake();
    const f2 = sinon.fake();

    f1();
    f2();

    const f1Call = f1.firstCall;
    const f2Call = f2.firstCall;

    t.end();
  }
);

t.test(
  `spyCall.calledImmediatelyBefore returns true,
    when instance is not called immediately before the argument`,
  (t) => {
    const f1 = sinon.fake();
    const f2 = sinon.fake();

    f1();
    f1();
    f2();

    const f1Call = f1.firstCall;
    const f2Call = f2.firstCall;

    t.notOk(f1Call.calledImmediatelyBefore(f2Call));

    t.end();
  }
);