spy.calledOnceWithExactly

Returns true, when the fake, spy or stub was called exactly once in total and that one call was using the exact provided arguments and no others.

import tap from "tap";
import * as sinon from "sinon";

tap.test("spy.calledOnceWithExactly", (t) => {
  const spy = sinon.spy();

  t.notOk(
    spy.calledOnceWithExactly("apple pie"),
    "returns false when spy has not been called"
  );

  spy("apple pie");
  t.ok(
    spy.calledOnceWithExactly("apple pie"),
    "returns true when spy was called exactly once with exact arguments"
  );

  spy("apple pie");
  t.notOk(
    spy.calledOnceWithExactly("apple pie"),
    "returns false when spy was called more than once"
  );

  // reset the history of everything
  sinon.resetHistory();

  spy("apple pie", "blueberry pie");
  t.notOk(
    spy.calledOnceWithExactly("apple pie"),
    "returns false when arguments don't match exactly"
  );

  t.end();
});

Resetting calledOnceWithExactly to default

You can reset calledOnceWithExactly in three different ways:

• spy.resetHistory
• sinon.resetHistory
• sinon.reset