import {createSnapToZero} from '../../../src/ol/rotationconstraint.js';


describe('ol.rotationconstraint', function() {

  describe('SnapToZero', function() {

    it('returns expected rotation value', function() {
      const rotationConstraint = createSnapToZero(0.3);

      expect(rotationConstraint(0.1)).to.eql(0);
      expect(rotationConstraint(0.2)).to.eql(0);
      expect(rotationConstraint(0.3)).to.eql(0);
      expect(rotationConstraint(0.4)).to.eql(0.4);

      expect(rotationConstraint(-0.1)).to.eql(0);
      expect(rotationConstraint(-0.2)).to.eql(0);
      expect(rotationConstraint(-0.3)).to.eql(0);
      expect(rotationConstraint(-0.4)).to.eql(-0.4);
    });

  });
});