Checkerboard challenge - ruby-on-rails

Question

I'm close to solving this challenge, however, I cannot figure out how to refactor my code to get the following spec to pass.
Spec to pass:
Test.assert_equals(checkered_board(2), "\u25A1 \u25A0\n\u25A0 \u25A1")
My error:
Expected: "\u25A1 \u25A0\n\u25A0 \u25A1", instead got: "\u25A1 \u25A0 \n\u25A0 \u25A1 "
My attempt (via visual on repl.it, everything appears correct)
def checkered_board(dimension)
return false unless dimension.integer? && dimension >= 2
checkboard = nil
checker_array = []
count = dimension
while dimension % 2 == 0 && count > 0 # set-up for even number passed in
if count % 2 == 0
checkboard = ("\u25A1 \u25A0 ") * (dimension / 2)
checkboard += "\n"
checker_array << checkboard
count -= 1
else
checkboard = ("\u25A0 \u25A1 ") * (dimension / 2)
if count == 1 #if count is the last number before 0, do not add \n to pass spec
checker_array << checkboard
else
checkboard += "\n"
checker_array << checkboard
end
count -= 1
end
end
while dimension % 2 == 1 && count > 0 # set-up for odd number passed in
if count % 2 == 1
checkboard = ("\u25A0 \u25A1 ") * (dimension / 2)
checkboard += "\u25A0"
if count == 1 #if count is the last number before 0, do not add \n to pass spec
checker_array << checkboard
else
checkboard += "\n"
checker_array << checkboard
end
count -= 1
else
checkboard = ("\u25A1 \u25A0 ") * (dimension / 2)
checkboard += "\u25A1"
checkboard += "\n"
checker_array << checkboard
count -= 1
end
end
checkboard = checker_array.join("")
checkboard
end
What should I add/do to pass how the \n is within the required passing spec?
Thanks

Answer 1

Figured out my own problem and solution is commented in code below
def checkered_board(dimension)
return false unless dimension.is_a?(Integer) && dimension >= 2
checkboard = nil
checker_array = []
spacer = " "
count = dimension
while dimension % 2 == 0 && count > 0 # set-up for even number passed in
if count % 2 == 0
checkboard = ("\u25A1#{spacer}\u25A0#{spacer}") * (dimension / 2)
checkboard = checkboard[0..-2] + "\n" #solution was here
checker_array << checkboard
count -= 1
else
checkboard = ("\u25A0#{spacer}\u25A1#{spacer}") * (dimension / 2)
if count == 1 #if count is the last number before 0, do not add \n to pass spec
checker_array << checkboard[0..-2] #solution was here
else
checkboard = checkboard[0..-2] + "\n" #solution was here
checker_array << checkboard
end
count -= 1
end
end
while dimension % 2 == 1 && count > 0 # set-up for odd number passed in
if count % 2 == 1
checkboard = ("\u25A0#{spacer}\u25A1#{spacer}") * (dimension / 2)
checkboard += "\u25A0"
if count == 1 #if count is the last number before 0, do not add \n to pass spec
checker_array << checkboard[0..-1] #solution was here
else
checkboard += "\n"
checker_array << checkboard
end
count -= 1
else
checkboard = ("\u25A1#{spacer}\u25A0#{spacer}") * (dimension / 2)
checkboard += "\u25A1"
checkboard = checkboard[0..-1] + "\n" #solution was here
checker_array << checkboard
count -= 1
end
end
checkboard = checker_array.join("")
checkboard
end