text: import chai from 'chai';
  import merge from 'settings/merge';
  
  const { assert } = chai;
  
  describe('settings merge', () => {
    it('provides empty object with no input', () => {
      const actual = merge('', undefined);
      const expected = {};
  
      assert.deepEqual(actual, expected);
    });
  
    it('passes default config', () => {
      const actual = merge({ hello: 'world' }, {});
      const expected = { hello: 'world' };
  
      assert.deepEqual(actual, expected);
    });
  
    it('passes custom config', () => {
      const actual = merge({}, { hello: 'world' });
      const expected = { hello: 'world' };
  
      assert.deepEqual(actual, expected);
    });
  
    it('merges objects', () => {
      const actual = merge({ hello: 'world' }, { foo: 'bar' });
      const expected = { hello: 'world', foo: 'bar' };
  
      assert.deepEqual(actual, expected);
    });
  
    it('overwrites default keys with custom keys', () => {
      const actual = merge({ foo: 'bar' }, { foo: 'baz' });
      const expected = { foo: 'baz' };
  
      assert.deepEqual(actual, expected);
    });
  
    it('merges deep objects', () => {
      const actual = merge({ foo: { bar: { baz: { text: 'text' } } } }, { foo: { bar: {} } });
      const expected = { foo: { bar: { baz: { text: 'text' } } } };
  
      assert.deepEqual(actual, expected);
    });
  });
  