piskel/test/js/rendering/OnionSkinRendererTest.js
2014-12-27 15:02:41 +01:00

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describe("Onion Skin Renderer test", function() {
var BLACK = '#000000';
var WHITE = '#ffffff';
var TRANS = Constants.TRANSPARENT_COLOR;
beforeEach(function() {});
afterEach(function() {});
it("renders correctly :)", function() {
var fakeRenderer = createMockRenderer();
var layer = createMockLayer();
var piskelController = createMockPiskelController();
piskelController.currentLayer_ = layer;
var onionSkinRenderer = new pskl.rendering.OnionSkinRenderer(fakeRenderer, piskelController);
// create frame
var previousFrame = pskl.model.Frame.fromPixelGrid(test.testutils.toFrameGrid([
[BLACK, TRANS],
[TRANS, TRANS]
]));
var nextFrame = pskl.model.Frame.fromPixelGrid(test.testutils.toFrameGrid([
[TRANS, TRANS],
[TRANS, BLACK]
]));
piskelController.currentFrameIndex_ = 1;
layer.frames = [previousFrame, {}, nextFrame];
// initial state, all counters at 0
expect(fakeRenderer.clearCounter_).toBe(0);
expect(fakeRenderer.renderCounter_).toBe(0);
// First rendering, should call clear + render
onionSkinRenderer.render();
expect(fakeRenderer.clearCounter_).toBe(1);
expect(fakeRenderer.renderCounter_).toBe(1);
test.testutils.frameEqualsGrid(fakeRenderer.renderedFrame_, [
[BLACK, TRANS],
[TRANS, BLACK]
]);
// Second rendering, nothing changed, should not clear or render
onionSkinRenderer.render();
expect(fakeRenderer.clearCounter_).toBe(1);
expect(fakeRenderer.renderCounter_).toBe(1);
// remove one frame
layer.frames = [previousFrame, {}];
onionSkinRenderer.render();
expect(fakeRenderer.clearCounter_).toBe(2);
expect(fakeRenderer.renderCounter_).toBe(2);
test.testutils.frameEqualsGrid(fakeRenderer.renderedFrame_, [
[BLACK, TRANS],
[TRANS, TRANS]
]);
// remove the other frame
layer.frames = [{}];
piskelController.currentFrameIndex_ = 0;
onionSkinRenderer.render();
// nothing to render, but the underlying renderer should still be cleared
expect(fakeRenderer.clearCounter_).toBe(3);
expect(fakeRenderer.renderCounter_).toBe(2);
});
var createMockLayer = function () {
return {
frames : [],
getFrameAt : function (index) {
return this.frames[index];
}
};
};
var createMockPiskelController = function () {
return {
currentFrameIndex_ : 1,
currentLayer_ : null,
getLayers : function () {
return [this.currentLayer_];
},
getCurrentFrameIndex : function () {
return this.currentFrameIndex_;
},
getCurrentLayer : function () {
return this.currentLayer_;
}
};
};
var createMockRenderer = function () {
return {
clearCounter_ : 0,
clear : function () {
this.clearCounter_++;
},
renderedFrame_ : null,
renderCounter_ : 0,
render : function (frame) {
this.renderCounter_++;
this.renderedFrame_ = frame;
},
getZoom : function () {
return 1;
},
getGridWidth : function () {
return 0;
},
getOffset : function () {
return {x:0,y:0};
},
getDisplaySize : function () {
return {width:10,height:10};
}
};
};
});