public void startDrawingTest()
        {
            MouseEventArgs args  = new MouseEventArgs(MouseButtons.Left, 0, 200, 200, -1);
            BMPLogic       logic = new BMPLogic(400, 400);

            logic.startDrawing(args);
            Assert.Equal(Color.FromArgb(255, 0, 0, 0), logic.getBitmap().GetPixel(200, 200));
            logic.chooseEllipse();
            logic.startDrawing(new MouseEventArgs(MouseButtons.Left, 0, 250, 250, -1));
            Assert.Equal(Color.FromArgb(255, 255, 255, 255), logic.getBitmap().GetPixel(250, 250));
        }
        public void finishDrawingTest()
        {
            MouseEventArgs args  = new MouseEventArgs(MouseButtons.Left, 0, 200, 200, -1);
            BMPLogic       logic = new BMPLogic(400, 400);

            logic.startDrawing(args);
            logic.finishDrawing(new MouseEventArgs(MouseButtons.Left, 0, 250, 250, -1));
            Assert.Equal(Color.FromArgb(255, 0, 0, 0), logic.getBitmap().GetPixel(200, 200));
            Assert.Equal(Color.FromArgb(255, 0, 0, 0), logic.getBitmap().GetPixel(250, 250));
            logic = new BMPLogic(400, 400);
            logic.chooseBrush();
            logic.startDrawing(args);
            logic.finishDrawing(new MouseEventArgs(MouseButtons.Left, 0, 250, 250, -1));
            Assert.Equal(Color.FromArgb(255, 0, 0, 0), logic.getBitmap().GetPixel(200, 200));
            Assert.Equal(Color.FromArgb(255, 0, 0, 0), logic.getBitmap().GetPixel(250, 250));
            logic.chooseEraser();
            logic.startDrawing(args);
            logic.finishDrawing(new MouseEventArgs(MouseButtons.Left, 0, 250, 250, -1));
            Assert.Equal(Color.FromArgb(255, 255, 255, 255), logic.getBitmap().GetPixel(200, 200));
            Assert.Equal(Color.FromArgb(255, 255, 255, 255), logic.getBitmap().GetPixel(250, 250));
            logic = new BMPLogic(400, 400);
            logic.chooseRectangle();
            logic.startDrawing(args);
            logic.finishDrawing(new MouseEventArgs(MouseButtons.Left, 0, 250, 250, -1));
            for (int i = 200; i < 251; i++)
            {
                int j = 200;
                Assert.Equal(Color.FromArgb(255, 0, 0, 0), logic.getBitmap().GetPixel(i, j));
            }
            for (int i = 200; i < 251; i++)
            {
                int j = 250;
                Assert.Equal(Color.FromArgb(255, 0, 0, 0), logic.getBitmap().GetPixel(i, j));
            }
            logic = new BMPLogic(400, 400);
            logic.chooseTriangle();
            logic.startDrawing(args);
            logic.finishDrawing(new MouseEventArgs(MouseButtons.Left, 0, 250, 250, -1));
            Assert.Equal(Color.FromArgb(255, 0, 0, 0), logic.getBitmap().GetPixel(200, 250));
            Assert.Equal(Color.FromArgb(255, 0, 0, 0), logic.getBitmap().GetPixel(250, 250));
            Assert.Equal(Color.FromArgb(255, 0, 0, 0), logic.getBitmap().GetPixel(224, 200));
            logic = new BMPLogic(400, 400);
            logic.chooseEllipse();
            logic.startDrawing(args);
            logic.finishDrawing(new MouseEventArgs(MouseButtons.Left, 0, 250, 250, -1));
            Assert.Equal(Color.FromArgb(255, 0, 0, 0), logic.getBitmap().GetPixel(200, (250 + 200) / 2));
            Assert.Equal(Color.FromArgb(255, 0, 0, 0), logic.getBitmap().GetPixel(250, (250 + 200) / 2));
            Assert.Equal(Color.FromArgb(255, 0, 0, 0), logic.getBitmap().GetPixel((250 + 200) / 2, 200));
            Assert.Equal(Color.FromArgb(255, 0, 0, 0), logic.getBitmap().GetPixel((250 + 200) / 2, 250));
        }
        public void DrawingTest()
        {
            MouseEventArgs args  = new MouseEventArgs(MouseButtons.Left, 0, 200, 200, -1);
            BMPLogic       logic = new BMPLogic(400, 400);

            logic.onWidthChanged(1);
            logic.startDrawing(args);
            logic.draw(new MouseEventArgs(MouseButtons.Left, 0, 250, 250, -1));
            Assert.Equal(Color.FromArgb(255, 0, 0, 0), logic.getBitmap().GetPixel(200, 200));
            Assert.Equal(Color.FromArgb(255, 0, 0, 0), logic.getBitmap().GetPixel(250, 250));
            logic = new BMPLogic(400, 400);
            logic.chooseBrush();
            logic.startDrawing(args);
            logic.draw(new MouseEventArgs(MouseButtons.Left, 0, 250, 250, -1));
            Assert.Equal(Color.FromArgb(255, 0, 0, 0), logic.getBitmap().GetPixel(200, 200));
            Assert.Equal(Color.FromArgb(255, 0, 0, 0), logic.getBitmap().GetPixel(250, 250));
            logic.chooseEraser();
            logic.startDrawing(args);
            logic.draw(new MouseEventArgs(MouseButtons.Left, 0, 250, 250, -1));
            Assert.Equal(Color.FromArgb(255, 255, 255, 255), logic.getBitmap().GetPixel(200, 200));
            Assert.Equal(Color.FromArgb(255, 255, 255, 255), logic.getBitmap().GetPixel(250, 250));
        }