var assert = require("assert")
var vec2 = require("../public/assets/javascripts/rectangles/models/vec2.js")

describe('vec2', function(){
  var vec = new vec2(0, 10)
  describe('#intersects()', function(){

    it('intersects itself', function(){
      assert.equal(true, vec.intersects( new vec2(0, 10) ));
    })
    it('intersects w/ same startpoint (shorter)', function(){
      assert.equal(true, vec.intersects( new vec2(0, 5) ));
    })
    it('intersects w/ same startpoint (longer)', function(){
      assert.equal(true, vec.intersects( new vec2(0, 15) ));
    })
    it('intersects w/ same endpoint (shorter)', function(){
      assert.equal(true, vec.intersects( new vec2(5, 10) ));
    })
    it('intersects w/ same endpoint (longer)', function(){
      assert.equal(true, vec.intersects( new vec2(-5, 10) ));
    })
    it('intersects when contained', function(){
      assert.equal(true, vec.intersects( new vec2(-5, 15) ));
    })
    it('does not intersect when before', function(){
      assert.equal(false, vec.intersects( new vec2(-10, -5) ));
    })
    it('does not intersect when after', function(){
      assert.equal(false, vec.intersects( new vec2(15, 20) ));
    })
    it('intersects when only startpoint matches', function(){
      assert.equal(true, vec.intersects( new vec2(-5, 0) ));
    })
    it('intersects when only endpoint matches', function(){
      assert.equal(true, vec.intersects( new vec2(10, 15) ));
    })
  })

  describe('#contains()', function(){
    it('contains itself', function(){
      assert.equal(true, vec.contains( 0 ));
      assert.equal(true, vec.contains( 5 ));
      assert.equal(true, vec.contains( 10 ));
    })
    it('does not contain before or after', function(){
      assert.equal(false, vec.contains( -5 ));
      assert.equal(false, vec.contains( 15 ));
    })
  })

  describe('#containsCenter()', function(){
    it('containsCenter itself', function(){
      assert.equal(true, vec.containsCenter( 5 ));
    })
    it('does not containsCenter its endpoints', function(){
      assert.equal(false, vec.containsCenter( 0 ));
      assert.equal(false, vec.containsCenter( 10 ));
    })
  })

  describe('#containsDisc()', function(){
    it('containsDisc within a radius', function(){
      assert.equal(true, vec.containsDisc( 2, 2 ));
      assert.equal(true, vec.containsDisc( 5, 2 ));
      assert.equal(true, vec.containsDisc( 7, 2 ));
    })
    it('does not containsDisc its endpoints', function(){
      assert.equal(false, vec.containsDisc( 0, 2 ));
      assert.equal(false, vec.containsDisc( 1, 2 ));
      assert.equal(false, vec.containsDisc( 9, 2 ));
      assert.equal(false, vec.containsDisc( 10, 2 ));
    })
    it('does not containsDisc outside points', function(){
      assert.equal(false, vec.containsDisc( -5, 2 ));
      assert.equal(false, vec.containsDisc( -2, 2 ));
      assert.equal(false, vec.containsDisc( 12, 2 ));
      assert.equal(false, vec.containsDisc( 15, 2 ));
    })
  })

  describe('#clampDisc()', function(){
    it('clampDisc clamps on the left', function(){
      assert.equal(2, vec.clampDisc( -1, 2 ));
      assert.equal(2, vec.clampDisc( 0, 2 ));
      assert.equal(2, vec.clampDisc( 1, 2 ));
      assert.equal(2, vec.clampDisc( 2, 2 ));
    })
    it('clampDisc clamps on the right', function(){
      assert.equal(8, vec.clampDisc( 8, 2 ));
      assert.equal(8, vec.clampDisc( 9, 2 ));
      assert.equal(8, vec.clampDisc( 10, 2 ));
      assert.equal(8, vec.clampDisc( 11, 2 ));
    })
    it('clampDisc doesnt clamp in the middle', function(){
      assert.equal(3, vec.clampDisc( 3, 2 ));
      assert.equal(4, vec.clampDisc( 4, 2 ));
      assert.equal(5, vec.clampDisc( 5, 2 ));
    })
  })
})