import {create, fromTransform} from '../../../../src/ol/vec/mat4.js';


describe('mat4', function() {

  describe('mat4.create()', function() {
    it('returns the expected matrix', function() {
      expect(create()).to.eql(
        [1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1]);
    });
  });

  describe('mat4.fromTransform()', function() {
    it('sets the expected transform on the matrix', function() {
      const transform = [1, 2, 3, 4, 5, 6];
      const result = create();
      expect(fromTransform(result, transform)).to.eql(
        [1, 2, 0, 0, 3, 4, 0, 0, 0, 0, 1, 0, 5, 6, 0, 1]);
      expect(result).to.eql(
        [1, 2, 0, 0, 3, 4, 0, 0, 0, 0, 1, 0, 5, 6, 0, 1]);
    });
  });

});