solution.js

// 15: destructuring - assign (solution)
// To do: make all tests pass, leave the assert lines unchanged!

describe('assign object property values to new variables while destructuring', () => {

  describe('for simple objects', function() {
    it('use a colon after the property name, like so `propertyName: newName`', () => {
      const {x: y} = {x: 1};
      assert.equal(y, 1);
    });

    it('assign a new name and give it a default value using `= <default value>`', () => {
      const {x: y=42} = {y: 23};
      assert.equal(y, 42);
    });
  });

  describe('for function parameter names', function() {
    it('do it the same way, with a colon behind it', () => {
      const fn = ({x: y}) => {
        assert.equal(y, 1);
      };
      fn({x: 1});
    });

    it('giving it a default value is possible too, like above', () => {
      const fn = ({x: y=3}) => {
        assert.equal(y, 3);
      };
      fn({});
    });
  });

});