suite('Stage', function() {
  // ======================================================
  test('instantiate stage with id', function() {
    var container = Konva.document.createElement('div');
    container.id = 'container';

    konvaContainer.appendChild(container);

    var stage = new Konva.Stage({
      container: 'container',
      width: 578,
      height: 200
    });

    assert.equal(stage.getContent().className, 'konvajs-content');
    assert.equal(stage.getContent().getAttribute('role'), 'presentation');
  });

  // ======================================================
  test('test stage buffer canvas and hit buffer canvas', function() {
    var container = Konva.document.createElement('div');
    container.id = 'container';

    konvaContainer.appendChild(container);

    // simulate pixelRatio = 2
    Konva.pixelRatio = 2;

    var stage = new Konva.Stage({
      container: 'container',
      width: 578,
      height: 200
    });

    assert.equal(stage.bufferCanvas.getPixelRatio(), 2);
    assert.equal(stage.bufferHitCanvas.getPixelRatio(), 1);

    // reset
    Konva.pixelRatio = 1;
  });

  // ======================================================
  test('instantiate stage with dom element', function() {
    var container = Konva.document.createElement('div');

    konvaContainer.appendChild(container);

    var stage = new Konva.Stage({
      container: container,
      width: 578,
      height: 200
    });
  });

  // ======================================================
  test('stage instantiation should clear container', function() {
    var container = Konva.document.createElement('div');
    var dummy = Konva.document.createElement('p');

    container.appendChild(dummy);
    konvaContainer.appendChild(container);

    var stage = new Konva.Stage({
      container: container,
      width: 578,
      height: 200
    });

    assert.equal(
      container.getElementsByTagName('p').length,
      0,
      'container should have no p tags'
    );
  });

  // ======================================================
  test('test stage cloning', function() {
    var stage = addStage();
    var layer = new Konva.Layer();
    stage.add(layer);

    var stageClone = stage.clone();
    assert.notEqual(
      stage.getContainer(),
      stageClone.getContainer(),
      'clone should be in different container'
    );

    assert.equal(
      stage.getContainer().childNodes[0].childNodes.length,
      1,
      'container should not have changes'
    );
  });

  // ======================================================
  test('set stage size', function() {
    var stage = addStage();

    var layer = new Konva.Layer();

    var circle = new Konva.Circle({
      x: stage.getWidth() / 2,
      y: stage.getHeight() / 2,
      radius: 70,
      fill: 'green',
      stroke: 'black',
      strokeWidth: 4,
      name: 'myCircle'
    });

    assert.equal(stage.getSize().width, 578);
    assert.equal(stage.getSize().height, 200);
    stage.setSize({ width: 1, height: 2 });
    assert.equal(stage.getSize().width, 1);
    assert.equal(stage.getSize().height, 2);
    stage.setSize({ width: 3, height: 3 });
    assert.equal(stage.getSize().width, 3);
    assert.equal(stage.getSize().height, 3);
    stage.setSize({
      width: 4,
      height: 5
    });
    assert.equal(stage.getSize().width, 4);
    assert.equal(stage.getSize().height, 5);
    stage.setWidth(6);
    assert.equal(stage.getSize().width, 6);
    assert.equal(stage.getSize().height, 5);
    stage.setHeight(7);
    assert.equal(stage.getSize().width, 6);
    assert.equal(stage.getSize().height, 7);
    stage.setSize({ width: 8, height: 9 });
    assert.equal(stage.getSize().width, 8);
    assert.equal(stage.getSize().height, 9);
    stage.setSize({ width: 10, height: 11 });
    assert.equal(stage.getSize().width, 10);
    assert.equal(stage.getSize().height, 11);

    layer.add(circle);
    stage.add(layer);

    stage.setSize({ width: 333, height: 155 });

    assert.equal(stage.getSize().width, 333);
    assert.equal(stage.getSize().height, 155);
    assert.equal(stage.getContent().style.width, '333px');
    assert.equal(stage.getContent().style.height, '155px');
    assert.equal(
      layer.getCanvas()._canvas.width,
      333 * layer.getCanvas().getPixelRatio()
    );
    assert.equal(
      layer.getCanvas()._canvas.height,
      155 * layer.getCanvas().getPixelRatio()
    );
  });

  // ======================================================
  test('get stage DOM', function() {
    var stage = addStage();

    assert.equal(stage.getContent().className, 'konvajs-content');
  });

  test('try to move stage ', function() {
    var stage = addStage();
    var container = document.createElement('div');
    var wrap = stage.container().parentNode;
    wrap.appendChild(container);

    stage.container(container);

    assert.equal(stage.container(), container);

    assert.equal(stage.content, container.children[0]);
  });

  test('clone stage ', function() {
    var stage = addStage();
    var layer = new Konva.Layer();
    stage.add(layer);

    var shape = new Konva.Circle({
      x: stage.width() / 2,
      y: stage.height() / 2,
      radius: 70,
      strokeWidth: 4,
      fill: 'red',
      stroke: 'black'
    });
    layer.add(shape);
    layer.draw();

    var container = document.createElement('div');
    var wrap = stage.container().parentNode;
    wrap.appendChild(container);

    var clone = stage.clone();
    clone.container(container);

    assert.equal(clone.container(), container);

    assert.equal(clone.content, container.children[0]);
  });

  // ======================================================
  test('stage getIntersection()', function() {
    var stage = addStage();
    var layer = new Konva.Layer();

    var redCircle = new Konva.Circle({
      x: 380,
      y: stage.getHeight() / 2,
      radius: 70,
      strokeWidth: 4,
      fill: 'red',
      stroke: 'black'
    });

    var greenCircle = new Konva.Circle({
      x: 300,
      y: stage.getHeight() / 2,
      radius: 70,
      strokeWidth: 4,
      fill: 'green',
      stroke: 'black'
    });

    layer.add(redCircle);
    layer.add(greenCircle);
    stage.add(layer);

    assert.equal(
      stage.getIntersection({ x: 300, y: 100 }),
      greenCircle,
      'shape should be greenCircle'
    );
    assert.equal(
      stage.getIntersection({ x: 380, y: 100 }),
      redCircle,
      'shape should be redCircle'
    );
    assert.equal(
      stage.getIntersection({ x: 100, y: 100 }),
      null,
      'shape should be null'
    );
  });

  // ======================================================
  test('layer getIntersection() with selector', function() {
    var stage = addStage();
    var layer = new Konva.Layer({
      name: 'layer'
    });

    var group = new Konva.Group({
      name: 'group'
    });

    var circle = new Konva.Circle({
      x: stage.getWidth() / 2,
      y: stage.getHeight() / 2,
      radius: 70,
      strokeWidth: 4,
      fill: 'red',
      stroke: 'black'
    });

    group.add(circle);
    layer.add(group);
    stage.add(layer);

    assert.equal(
      stage.getIntersection(
        { x: stage.width() / 2, y: stage.height() / 2 },
        'Circle'
      ),
      circle,
      'intersection with shape selector'
    );
    assert.equal(
      stage.getIntersection(
        { x: stage.width() / 2, y: stage.height() / 2 },
        '.group'
      ),
      group,
      'intersection with group selector'
    );
    assert.equal(
      stage.getIntersection(
        { x: stage.width() / 2, y: stage.height() / 2 },
        'Stage'
      ),
      stage,
      'intersection with stage selector'
    );
  });

  // ======================================================
  test('stage getIntersection() edge detection', function() {
    var stage = addStage();
    var layer = new Konva.Layer();

    var redCircle = new Konva.Circle({
      x: 380,
      y: stage.getHeight() / 2,
      radius: 70,
      strokeWidth: 4,
      fill: 'red',
      stroke: 'black'
    });

    var greenCircle = new Konva.Circle({
      x: 300,
      y: stage.getHeight() / 2,
      radius: 70,
      strokeWidth: 4,
      fill: 'green',
      stroke: 'black'
    });

    stage.on('contentMousemove', function() {
      var pos = stage.getPointerPosition();
      var shape = stage.getIntersection(pos);
      if (!shape) {
        //console.log(pos);
      }
    });

    layer.add(redCircle);
    layer.add(greenCircle);
    stage.add(layer);

    assert.equal(
      stage.getIntersection({ x: 370, y: 93 }),
      greenCircle,
      'shape should be greenCircle'
    );
    assert.equal(
      stage.getIntersection({ x: 371, y: 93 }),
      greenCircle,
      'shape should be greenCircle'
    );
    assert.equal(
      stage.getIntersection({ x: 372, y: 93 }),
      redCircle,
      'shape should be redCircle'
    );
  });

  // ======================================================
  test('test getAllIntersections', function() {
    var stage = addStage();
    var layer = new Konva.Layer();

    var redCircle = new Konva.Circle({
      x: 380,
      y: stage.getHeight() / 2,
      radius: 70,
      strokeWidth: 4,
      fill: 'red',
      stroke: 'black',
      id: 'redCircle'
    });

    var greenCircle = new Konva.Circle({
      x: 300,
      y: stage.getHeight() / 2,
      radius: 70,
      strokeWidth: 4,
      fill: 'green',
      stroke: 'black',
      id: 'greenCircle'
    });

    layer.add(redCircle);
    layer.add(greenCircle);
    stage.add(layer);

    // test individual shapes
    assert.equal(
      stage.getAllIntersections({ x: 266, y: 114 }).length,
      1,
      '17) getAllIntersections should return one shape'
    );
    assert.equal(
      stage.getAllIntersections({ x: 266, y: 114 })[0].getId(),
      'greenCircle',
      '19) first intersection should be greenCircle'
    );

    assert.equal(
      stage.getAllIntersections({ x: 414, y: 115 }).length,
      1,
      '18) getAllIntersections should return one shape'
    );
    assert.equal(
      stage.getAllIntersections({ x: 414, y: 115 })[0].getId(),
      'redCircle',
      '20) first intersection should be redCircle'
    );

    assert.equal(
      stage.getAllIntersections({ x: 350, y: 118 }).length,
      2,
      '1) getAllIntersections should return two shapes'
    );
    assert.equal(
      stage.getAllIntersections({ x: 350, y: 118 })[0].getId(),
      'redCircle',
      '2) first intersection should be redCircle'
    );
    assert.equal(
      stage.getAllIntersections({ x: 350, y: 118 })[1].getId(),
      'greenCircle',
      '3) second intersection should be greenCircle'
    );

    // hide green circle.  make sure only red circle is in result set
    greenCircle.hide();
    layer.draw();

    assert.equal(
      stage.getAllIntersections({ x: 350, y: 118 }).length,
      1,
      '4) getAllIntersections should return one shape'
    );
    assert.equal(
      stage.getAllIntersections({ x: 350, y: 118 })[0].getId(),
      'redCircle',
      '5) first intersection should be redCircle'
    );

    // show green circle again.  make sure both circles are in result set
    greenCircle.show();
    layer.draw();

    assert.equal(
      stage.getAllIntersections({ x: 350, y: 118 }).length,
      2,
      '6) getAllIntersections should return two shapes'
    );
    assert.equal(
      stage.getAllIntersections({ x: 350, y: 118 })[0].getId(),
      'redCircle',
      '7) first intersection should be redCircle'
    );
    assert.equal(
      stage.getAllIntersections({ x: 350, y: 118 })[1].getId(),
      'greenCircle',
      '8) second intersection should be greenCircle'
    );

    // hide red circle.  make sure only green circle is in result set
    redCircle.hide();
    layer.draw();

    assert.equal(
      stage.getAllIntersections({ x: 350, y: 118 }).length,
      1,
      '9) getAllIntersections should return one shape'
    );
    assert.equal(
      stage.getAllIntersections({ x: 350, y: 118 })[0].getId(),
      'greenCircle',
      '10) first intersection should be greenCircle'
    );

    // show red circle again.  make sure both circles are in result set
    redCircle.show();
    layer.draw();

    assert.equal(
      stage.getAllIntersections({ x: 350, y: 118 }).length,
      2,
      '11) getAllIntersections should return two shapes'
    );
    assert.equal(
      stage.getAllIntersections({ x: 350, y: 118 })[0].getId(),
      'redCircle',
      '12) first intersection should be redCircle'
    );
    assert.equal(
      stage.getAllIntersections({ x: 350, y: 118 })[1].getId(),
      'greenCircle',
      '13) second intersection should be greenCircle'
    );

    // test from layer
    assert.equal(
      layer.getAllIntersections({ x: 350, y: 118 }).length,
      2,
      '14) getAllIntersections should return two shapes'
    );
    assert.equal(
      layer.getAllIntersections({ x: 350, y: 118 })[0].getId(),
      'redCircle',
      '15) first intersection should be redCircle'
    );
    assert.equal(
      layer.getAllIntersections({ x: 350, y: 118 })[1].getId(),
      'greenCircle',
      '16) second intersection should be greenCircle'
    );
  });

  // ======================================================
  test('test getAllIntersections for text', function() {
    var stage = addStage();
    var layer = new Konva.Layer();

    var text = new Konva.Text({
      x: 0,
      y: 0,
      text: 'Hello world',
      fontSize: 50,
      name: 'intersectText'
    });

    layer.add(text);
    stage.add(layer);

    // test individual shapes
    assert.equal(
      stage.getAllIntersections({ x: 10, y: 10 }).length,
      1,
      '17) getAllIntersections should return one shape'
    );
  });

  // ======================================================
  test('Should not throw on clip for stage', function() {
    // no asserts, because we check throw
    var stage = addStage({
      clipFunc: () => {}
    });
    var layer = new Konva.Layer();

    var text = new Konva.Text({
      x: 0,
      y: 0,
      text: 'Hello world',
      fontSize: 50,
      name: 'intersectText'
    });

    layer.add(text);
    stage.add(layer);
  });

  // ======================================================
  test('scale stage after add layer', function() {
    var stage = addStage();
    var layer = new Konva.Layer();
    var circle = new Konva.Circle({
      x: stage.getWidth() / 2,
      y: stage.getHeight() / 2,
      radius: 70,
      fill: 'green',
      stroke: 'black',
      strokeWidth: 4
    });

    layer.add(circle);
    stage.add(layer);

    stage.setScale({ x: 0.5, y: 0.5 });

    assert.equal(stage.getScale().x, 0.5, 'stage scale x should be 0.5');
    assert.equal(stage.getScale().y, 0.5, 'stage scale y should be 0.5');
    stage.draw();
  });

  // ======================================================
  test('scale stage before add shape', function() {
    var stage = addStage();
    var layer = new Konva.Layer();
    var circle = new Konva.Circle({
      x: stage.getWidth() / 2,
      y: stage.getHeight() / 2,
      radius: 70,
      fill: 'green',
      stroke: 'black',
      strokeWidth: 4
    });

    stage.setScale({ x: 0.5, y: 0.5 });

    assert.equal(stage.getScale().x, 0.5, 'stage scale x should be 0.5');
    assert.equal(stage.getScale().y, 0.5, 'stage scale y should be 0.5');

    layer.add(circle);
    stage.add(layer);
  });

  // ======================================================
  test('remove stage', function() {
    var stage = addStage();
    var layer = new Konva.Layer();
    var circle = new Konva.Circle({
      x: stage.getWidth() / 2,
      y: stage.getHeight() / 2,
      radius: 70,
      fill: 'green',
      stroke: 'black',
      strokeWidth: 4
    });

    layer.add(circle);
    stage.add(layer);

    // remove should have no effect, and should cause no JS error
    stage.remove();
  });

  // ======================================================
  test('destroy stage', function() {
    var container = Konva.document.createElement('div');

    konvaContainer.appendChild(container);

    var stage = new Konva.Stage({
      container: container,
      width: 578,
      height: 200,
      id: 'stageFalconId',
      name: 'stageFalconName'
    });

    var layer = new Konva.Layer();
    var circle = new Konva.Circle({
      x: stage.getWidth() / 2,
      y: stage.getHeight() / 2,
      radius: 70,
      fill: 'green',
      stroke: 'black',
      strokeWidth: 4,
      id: 'circleFalconId',
      name: 'circleFalconName'
    });

    layer.add(circle);
    stage.add(layer);

    assert.equal(
      Konva.ids.stageFalconId._id,
      stage._id,
      'stage id should be in global ids map'
    );
    assert.equal(
      Konva.names.stageFalconName[0]._id,
      stage._id,
      'stage name should be in global names map'
    );
    assert.equal(
      Konva.ids.circleFalconId._id,
      circle._id,
      'circle id should be in global ids map'
    );
    assert.equal(
      Konva.names.circleFalconName[0]._id,
      circle._id,
      'circle name should be in global names map'
    );

    stage.destroy();

    assert.equal(
      Konva.ids.stageFalconId,
      undefined,
      'stage should no longer be in ids map'
    );
    assert.equal(
      Konva.names.stageFalconName,
      undefined,
      'stage should no longer be in names map'
    );
    assert.equal(
      Konva.ids.circleFalconId,
      undefined,
      'circle should no longer be in ids map'
    );
    assert.equal(
      Konva.names.circleFalconName,
      undefined,
      'circle should no longer be in names map'
    );
    assert.equal(
      Konva.stages.indexOf(stage) === -1,
      true,
      'stage should not be in stages array'
    );
  });

  // ======================================================
  test('scale stage with no shapes', function() {
    var stage = addStage();

    var layer = new Konva.Layer();

    stage.add(layer);
    stage.setScaleX(0.5);

    stage.draw();
  });

  // ======================================================
  test('test stage.getStage()', function() {
    var stage = addStage();

    assert.notEqual(stage.getStage(), undefined);

    //console.log(stage.getStage());
  });

  test('add multiple layers to stage', function() {
    var stage = addStage();
    var layer1 = new Konva.Layer();
    var layer2 = new Konva.Layer();
    var layer3 = new Konva.Layer();
    stage.add(layer1, layer2, layer3);
    assert.equal(stage.getLayers().length, 3, 'stage has exactly three layers');
  });
  // ======================================================
  test('test drag and click', function() {
    var stage = addStage();
    var layer = new Konva.Layer();
    var rect = new Konva.Rect({
      x: 50,
      y: 50,
      width: 50,
      height: 50,
      fill: 'red',
      draggable: true
    });

    layer.add(rect);
    stage.add(layer);

    rect.on('dblclick', function() {
      assert(false, 'double click fired');
    });

    var y = 60;

    // simulate dragging
    stage.simulateMouseDown({
      x: 60,
      y: y
    });

    stage.simulateMouseMove({
      x: 61,
      y: y
    });

    stage.simulateMouseMove({
      x: 62,
      y: y
    });

    stage.simulateMouseMove({
      x: 63,
      y: y
    });

    stage.simulateMouseMove({
      x: 64,
      y: y
    });

    stage.simulateMouseUp({
      x: 65,
      y: y
    });

    assert.equal(Konva.isDragging(), false);
    assert.equal(Konva.DD.node, undefined);
    // simulate click
    stage.simulateMouseDown({
      x: 66,
      y: y
    });

    stage.simulateMouseUp({
      x: 66,
      y: y
    });
    assert.equal(Konva.isDragging(), false);
    assert.equal(Konva.DD.node, undefined);
  });

  // ======================================================
  test('do not trigger stage click after dragend', function() {
    var stage = addStage();
    var layer = new Konva.Layer();
    var rect = new Konva.Rect({
      x: 0,
      y: 0,
      width: 50,
      height: 50,
      fill: 'red',
      draggable: true
    });

    layer.add(rect);
    stage.add(layer);

    var clicks = 0;

    stage.on('click', function() {
      debugger;
      clicks += 1;
    });

    // simulate dragging
    stage.simulateMouseDown({
      x: 25,
      y: 25
    });

    stage.simulateMouseMove({
      x: 100,
      y: 100
    });

    // move rect out of mouse
    rect.x(-30);
    rect.y(-30);

    stage.simulateMouseUp({
      x: 100,
      y: 100
    });

    assert.equal(clicks, 0);
  });

  test('can listen click on empty areas', function() {
    var stage = addStage();
    var layer = new Konva.Layer();
    stage.add(layer);

    var dblicks = 0;
    var clicks = 0;
    var mousedowns = 0;
    var mouseups = 0;
    var mousemoves = 0;

    stage.on('mousedown', function(e) {
      mousedowns += 1;
      assert.equal(e.target, stage);
      assert.equal(e.currentTarget, stage);
    });

    stage.on('mousemove', function(e) {
      mousemoves += 1;
      assert.equal(e.target, stage);
      assert.equal(e.currentTarget, stage);
    });

    stage.on('mouseup', function(e) {
      mouseups += 1;
      assert.equal(e.target, stage);
      assert.equal(e.currentTarget, stage);
    });

    stage.on('click', function(e) {
      clicks += 1;
      assert.equal(e.target, stage);
      assert.equal(e.currentTarget, stage);
    });

    stage.on('dblclick', function(e) {
      dblicks += 1;
      assert.equal(e.target, stage);
      assert.equal(e.currentTarget, stage);
    });

    // simulate dragging
    stage.simulateMouseDown({
      x: 60,
      y: 10
    });

    stage.simulateMouseMove({
      x: 60,
      y: 10
    });

    stage.simulateMouseUp({
      x: 65,
      y: 10
    });

    assert.equal(mousedowns, 1, 'first mousedown registered');
    assert.equal(mouseups, 1, 'first mouseup registered');
    assert.equal(clicks, 1, 'first click registered');
    assert.equal(mousemoves, 1, 'first mousemove registered');
    assert.equal(dblicks, 0, 'no  dbclicks registered');

    stage.simulateMouseDown({
      x: 60,
      y: 10
    });

    stage.simulateMouseUp({
      x: 65,
      y: 10
    });

    assert.equal(mousedowns, 2, 'second mousedown registered');
    assert.equal(mouseups, 2, 'seconds mouseup registered');
    assert.equal(clicks, 2, 'seconds click registered');
    assert.equal(dblicks, 1, 'first dbclick registered');
  });

  test('test can listen taps on empty areas', function() {
    var stage = addStage();
    var layer = new Konva.Layer();
    stage.add(layer);

    var dbltaps = 0;
    var taps = 0;
    var touchstarts = 0;
    var touchends = 0;
    var touchmoves = 0;

    stage.on('touchstart', function(e) {
      touchstarts += 1;
      assert.equal(e.target, stage);
      assert.equal(e.currentTarget, stage);
    });

    stage.on('touchend', function(e) {
      touchends += 1;
      assert.equal(e.target, stage);
      assert.equal(e.currentTarget, stage);
    });

    stage.on('touchmove', function(e) {
      touchmoves += 1;
      assert.equal(e.target, stage);
      assert.equal(e.currentTarget, stage);
    });

    stage.on('tap', function(e) {
      taps += 1;
      assert.equal(e.target, stage);
      assert.equal(e.currentTarget, stage);
    });

    stage.on('dbltap', function(e) {
      dbltaps += 1;
      assert.equal(e.target, stage);
      assert.equal(e.currentTarget, stage);
    });

    var top = stage.content.getBoundingClientRect().top;
    // simulate dragging
    stage._touchstart({
      touches: [
        {
          clientX: 100,
          clientY: 100 + top
        }
      ]
    });

    stage._touchmove({
      touches: [
        {
          clientX: 100,
          clientY: 100 + top
        }
      ]
    });

    stage._touchend({
      touches: []
    });

    assert.equal(touchstarts, 1, 'first touchstart registered');
    assert.equal(touchends, 1, 'first touchends registered');
    assert.equal(taps, 1, 'first tap registered');
    assert.equal(touchmoves, 1, 'first touchmove registered');
    assert.equal(dbltaps, 0, 'no  dbltap registered');

    stage._touchstart({
      touches: [
        {
          clientX: 100,
          clientY: 100 + top
        }
      ]
    });

    stage._touchend({
      touches: []
    });

    assert.equal(touchstarts, 2, 'first touchstart registered');
    assert.equal(touchends, 2, 'first touchends registered');
    assert.equal(taps, 2, 'first tap registered');
    assert.equal(dbltaps, 1, 'dbltap registered');
  });

  test('pass context and wheel events to shape', function() {
    var stage = addStage();
    var layer = new Konva.Layer();
    stage.add(layer);

    var rect = new Konva.Rect({
      x: 50,
      y: 50,
      width: 100,
      height: 100,
      fill: 'red'
    });
    layer.add(rect);
    layer.draw();

    var contextmenus = 0;
    var wheels = 0;

    // test on empty
    stage.on('contextmenu', function(e) {
      contextmenus += 1;
      assert.equal(e.target, stage);
      assert.equal(e.currentTarget, stage);
    });

    stage.on('wheel', function(e) {
      wheels += 1;
      assert.equal(e.target, stage);
      assert.equal(e.currentTarget, stage);
    });

    var top = stage.content.getBoundingClientRect().top;
    stage._contextmenu({
      clientX: 0,
      clientY: top + 0
    });
    stage._wheel({
      clientX: 0,
      clientY: top + 0
    });

    assert.equal(contextmenus, 1, 'first contextment registered');
    assert.equal(wheels, 1, 'first wheel registered');

    stage.off('contextmenu');
    stage.off('wheel');

    // test on shape
    stage.on('contextmenu', function(e) {
      contextmenus += 1;
      assert.equal(e.target, rect);
      assert.equal(e.currentTarget, stage);
    });

    stage.on('wheel', function(e) {
      wheels += 1;
      assert.equal(e.target, rect);
      assert.equal(e.currentTarget, stage);
    });
    stage._contextmenu({
      clientX: 60,
      clientY: top + 60
    });
    stage._wheel({
      clientX: 60,
      clientY: top + 60
    });

    assert.equal(contextmenus, 2, 'second contextment registered');
    assert.equal(wheels, 2, 'second wheel registered');
  });

  test('make sure it does not trigger too many events', function() {
    var stage = addStage();
    var layer = new Konva.Layer();
    stage.add(layer);
    var rect = new Konva.Rect({
      width: stage.width(),
      height: stage.height()
    });
    layer.add(rect);
    layer.draw();

    var dblicks = 0;
    var clicks = 0;
    var mousedowns = 0;
    var mouseups = 0;

    stage.on('mousedown', function(e) {
      mousedowns += 1;
      assert.equal(e.target, rect);
      assert.equal(e.currentTarget, stage);
    });

    stage.on('mouseup', function(e) {
      mouseups += 1;
      assert.equal(e.target, rect);
      assert.equal(e.currentTarget, stage);
    });

    stage.on('click', function(e) {
      clicks += 1;
      assert.equal(e.target, rect);
      assert.equal(e.currentTarget, stage);
    });

    stage.on('dblclick', function(e) {
      dblicks += 1;
      assert.equal(e.target, rect);
      assert.equal(e.currentTarget, stage);
    });

    // simulate dragging
    stage.simulateMouseDown({
      x: 60,
      y: 10
    });

    stage.simulateMouseUp({
      x: 65,
      y: 10
    });

    assert.equal(mousedowns, 1, 'first mousedown registered');
    assert.equal(mouseups, 1, 'first mouseup registered');
    assert.equal(clicks, 1, 'first click registered');
    assert.equal(dblicks, 0, 'no  dbclicks registered');

    stage.simulateMouseDown({
      x: 60,
      y: 10
    });

    stage.simulateMouseUp({
      x: 65,
      y: 10
    });

    assert.equal(mousedowns, 2, 'second mousedown registered');
    assert.equal(mouseups, 2, 'seconds mouseup registered');
    assert.equal(clicks, 2, 'seconds click registered');
    assert.equal(dblicks, 1, 'first dbclick registered');
  });

  test('test mouseover event on stage', function() {
    var stage = addStage();
    var layer = new Konva.Layer();
    stage.add(layer);
    var rect1 = new Konva.Rect({
      x: 50,
      y: 50,
      width: 50,
      height: 50,
      fill: 'red'
    });
    layer.add(rect1);

    var rect2 = new Konva.Rect({
      x: 100,
      y: 100,
      width: 50,
      height: 50,
      fill: 'red'
    });
    layer.add(rect2);
    layer.draw();

    var mouseover = 0;

    stage.on('mouseover', function(e) {
      mouseover += 1;

      if (mouseover === 1) {
        assert.equal(e.target, stage);
        assert.equal(e.currentTarget, stage);
      }
      if (mouseover === 2) {
        assert.equal(e.target, rect1);
      }
      if (mouseover === 3) {
        assert.equal(e.target, rect2);
      }
    });

    stage._mouseover({
      clientX: 0,
      clientY: 0
    });

    assert.equal(mouseover, 1, 'initial over');
    stage.simulateMouseMove({
      x: 10,
      y: 10
    });

    assert.equal(mouseover, 1, 'moved inside stage - no new over events');

    stage.simulateMouseMove({
      x: 60,
      y: 60
    });

    assert.equal(mouseover, 2, 'moved into inner shape, trigger new mouseover');

    stage.simulateMouseMove({
      x: 110,
      y: 110
    });

    assert.equal(
      mouseover,
      3,
      'moved into second shape, trigger new mouseover'
    );

    stage.simulateMouseMove({
      x: 10,
      y: 10
    });

    assert.equal(
      mouseover,
      4,
      'moved to empty space shape, trigger new mouseover'
    );
  });

  test('toCanvas in sync way', function() {
    var stage = addStage();
    var layer = new Konva.Layer();
    var circle = new Konva.Circle({
      x: stage.width() / 2,
      y: stage.height() / 2,
      fill: 'black',
      radius: 50
    });
    layer.add(circle);
    stage.add(layer);

    compareCanvases(stage.toCanvas(), layer.toCanvas(), 200);
  });

  test('toDataURL with hidden layer', function() {
    var stage = addStage();
    var layer = new Konva.Layer();
    var circle = new Konva.Circle({
      x: stage.width() / 2,
      y: stage.height() / 2,
      fill: 'red',
      radius: 50
    });
    layer.add(circle);
    stage.add(layer);

    var stageDataUrl = stage.toDataURL();
    layer.visible(false);
    assert.equal(stage.toDataURL() === stageDataUrl, false);
  });

  test('toDataURL works as toCanvas', function() {
    var stage = addStage();
    var layer = new Konva.Layer();
    var circle = new Konva.Circle({
      x: stage.width() / 2,
      y: stage.height() / 2,
      fill: 'red',
      radius: 50
    });
    layer.add(circle);
    stage.add(layer);

    assert.equal(stage.toDataURL(), stage.toCanvas().toDataURL());
  });

  test('toDataURL should no relate on stage size', function() {
    var stage = addStage();
    var layer = new Konva.Layer();
    var circle = new Konva.Circle({
      x: stage.width() / 2,
      y: stage.height() / 2,
      fill: 'red',
      radius: stage.height() * 0.6
    });
    layer.add(circle);
    stage.add(layer);

    compareCanvases(stage.toCanvas(circle.getClientRect()), circle.toCanvas());
  });

  test('toCanvas with large size', function() {
    var stage = addStage();
    var layer = new Konva.Layer();

    var radius = stage.height() / 2 + 10;
    var circle = new Konva.Circle({
      x: stage.height() / 2,
      y: stage.height() / 2,
      fill: 'black',
      radius: radius
    });
    layer.add(circle);
    stage.add(layer);

    var stageCanvas = stage.toCanvas({
      x: -10,
      y: -10,
      width: stage.height() + 20,
      height: stage.height() + 20
    });

    var canvas = createCanvas();
    canvas.width = radius * 2;
    canvas.height = radius * 2;
    var context = canvas.getContext('2d');
    context.beginPath();
    context.arc(radius, radius, radius, 0, 2 * Math.PI);
    context.fillStyle = 'black';
    context.fill();
    compareCanvases(stageCanvas, canvas, 100);
  });

  test('check hit graph with stage listening property', function() {
    var stage = addStage();
    var layer = new Konva.Layer();
    stage.add(layer);
    showHit(layer);
    var circle = new Konva.Circle({
      fill: 'green',
      radius: 50
    });
    layer.add(circle);

    var pos = {
      x: stage.width() / 2,
      y: stage.height() / 2
    };
    circle.position(pos);
    stage.draw();

    // try to detect circle via hit graph
    assert.equal(stage.getIntersection(pos), circle, 'has circle');

    // disable hit graph
    stage.listening(false);
    stage.draw();
    assert.equal(!!stage.getIntersection(pos), false, 'no circle');

    // enable it again
    stage.listening(true);
    stage.draw();
    assert.equal(stage.getIntersection(pos), circle, 'circle again');
  });

  test('toDataURL should use pixelRatio 1 by default', function(done) {
    var stage = addStage();

    var url = stage.toDataURL();
    var image = new window.Image();
    image.onload = function() {
      assert.equal(image.width, stage.width());
      assert.equal(image.height, stage.height());
      done();
    };
    image.src = url;
  });

  test('show a warning if the stage has too many layers', function() {
    var stage = addStage();
    var oldWarn = Konva.Util.warn;
    var called = false;
    Konva.Util.warn = function() {
      called = true;
    };

    // let say 5 is max number
    stage.add(new Konva.Layer());
    stage.add(new Konva.Layer());
    stage.add(new Konva.Layer());
    stage.add(new Konva.Layer());
    stage.add(new Konva.Layer());
    stage.add(new Konva.Layer());
    stage.add(new Konva.Layer());

    Konva.Util.warn = oldWarn;
    assert.equal(called, true);
  });

  // test.only('Warn when styles or stage are applied', function() {
  //   var stage = addStage();
  //   // var layer = new Konva.Layer();
  //   // stage.add(layer);
  //   var container = stage.content;
  //   console.log(
  //     getComputedStyle(container).width,
  //     getComputedStyle(container).height
  //   );
  // });
});