public void ReturnsGridReferenceForTriangleF11Coordinates() { Grid grid = new Grid(60, 60, 10); Triangle triangle = new Triangle(); triangle.AddAngleCoordinate(new Coordinate(50, 60)); triangle.AddTopLeftCoordinate(new Coordinate(50, 50)); triangle.AddBottomRightCoordinate(new Coordinate(60, 60)); GridReferenceByTriangleCalculator calculator = new GridReferenceByTriangleCalculator(); GridReference gridReference = calculator.Calculate(grid, triangle); Assert.Equal(11, gridReference.Column); Assert.Equal('F', gridReference.Row); }