Function toCustomMatch

e2e/custom-matcher-stack-trace/__tests__/sync.test.js:10–21

(callback, expectation)

'use strict';

function toCustomMatch(callback, expectation) {
  const actual = callback();

  if (actual === expectation) {
    return {pass: true};
  } else {
    return {
      message: () => `Expected "${expectation}" but got "${actual}"`,
      pass: false,
    };
  }
}

expect.extend({
  toCustomMatch,