require 'spec_helper'

module Mork
  describe Grid do
    let(:grid) { Grid.new(:default) }

    describe "#initialize" do
      it "returns a Grid object" do
        grid.should be_a(Grid)
      end
    end
    
    describe "#cell_x" do
      context "for 1st-column questions" do
        it "returns the distance from the registration frame of the left edge of the 1st choice" do
          grid.send(:cell_x,0,0).should == 7.5
        end
        
        it "returns the distance from the registration frame of the left edge of the 2nd choice" do
          grid.send(:cell_x,0,1).should == 14.5
        end
      end

      context "for 4th-column questions" do
        it "returns the distance from the registration frame of the left edge of the 1st choice" do
          grid.send(:cell_x,120,0).should == 157.5
        end
        
        it "returns the distance from the registration frame of the left edge of the 2nd choice" do
          grid.send(:cell_x,120,1).should == 164.5
        end
      end
    end
    
    describe "#cell_y" do
      it "returns the distance from the registration frame of the top edge of the 1st row of cells" do
        grid.send(:cell_y,0).should == 33.5
      end
      
      it "returns the distance from the registration frame of the 40th row of cells" do
        grid.send(:cell_y,39).should == 267.5
      end
    end
    
    describe "#cell_xy" do
      it "returns the left and top distances from the registration frame of a sample cell" do
        x, y = grid.send(:cell_xy,54, 3)
        x.should == 78.5
        y.should == 117.5
      end
    end
  end
end

# describe "#question_area" do
#   before(:each) do
#     grid.reg_marks(@image)
#   end
#   it "returns a hash" do
#     grid.question_area(1).should be_an_instance_of(Hash)
#   end
#   
#   it "returns the location in pixels of the first question patch" do
#     c = grid.question_area(1)
#     c[:x].should be_within(4).of(90)
#     c[:y].should be_within(4).of(388)
#   end
#   it "returns the location in pixels of the 40th question patch" do
#     c = grid.question_area(40)
#     c[:x].should be_within(4).of(90)
#     c[:y].should be_within(4).of(3120)
#   end
# 
#   it "returns the location in pixels of the 121th question patch" do
#     c = grid.question_area(121)
#     c[:x].should be_within(4).of(1887)
#     c[:y].should be_within(4).of(388)
#   end
# 
#   it "returns the location in pixels of the last question patch" do
#     c = grid.question_area(160)
#     c[:x].should be_within(4).of(1887)
#     c[:y].should be_within(4).of(3120)
#   end
# end