electron/spec/api-deprecations-spec.js

const assert = require('assert');
const deprecations = require('electron').deprecations;

describe('deprecations', function() {
  beforeEach(function() {
    deprecations.setHandler(null);
    process.throwDeprecation = true;
  });

  it('allows a deprecation handler function to be specified', function() {
    var messages = [];

    deprecations.setHandler(function (message) {
      messages.push(message);
    });

    require('electron').webFrame.registerUrlSchemeAsSecure('some-scheme');

    assert.deepEqual(messages, ['registerUrlSchemeAsSecure is deprecated. Use registerURLSchemeAsSecure instead.']);
  });

  it('throws an exception if no deprecation handler is specified', function() {
    assert.throws(function() {
      require('electron').webFrame.registerUrlSchemeAsPrivileged('some-scheme');
    }, "registerUrlSchemeAsPrivileged is deprecated. Use registerURLSchemeAsPrivileged instead.");
  });
});