Then, in spec/cucumber/steps/request.js, implement the following step definition:

When(/^set the HTTP header field (?:"|')?([\w-]+)(?:"|')? to (?:"|')?(.+)(?:"|')?$/, function (headerName, value) {
  this.request.set(headerName, value);
});

When(/^sets the Authorization header to a valid token$/, function () {
  this.request.set('Authorization', `Bearer ${this.token}`);
});

When(/^sets the Authorization header to a token with wrong signature$/, function () {
  // Appending anything to the end of the signature will invalidate it
  const tokenWithInvalidSignature = `${this.token}a`;
  this.request.set('Authorization', `Bearer ${tokenWithInvalidSignature}`);
});