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Contents
-module(difference_of_squares_tests).
-include_lib("eunit/include/eunit.hrl").
-define(assertSumOfSquares(Expected, Number), ?assertEqual(Expected, difference_of_squares:sum_of_squares(Number))).
-define(assertSquareOfSums(Expected, Number), ?assertEqual(Expected, difference_of_squares:square_of_sums(Number))).
-define(assertDifference(Expected, Number), ?assertEqual(Expected, difference_of_squares:difference_of_squares(Number))).
%% Square the sum of the numbers up to the given number
square_of_sums_5_test() ->
?assertSquareOfSums( 225, 5 ).
square_of_sums_10_test() ->
?assertSquareOfSums( 3025, 10 ).
square_of_sums_100_test() ->
?assertSquareOfSums( 25502500, 100 ).
%% Sum the squares of the numbers up to the given number
sum_of_square_5_test() ->
?assertSumOfSquares( 55, 5 ).
sum_of_square_10_test() ->
?assertSumOfSquares( 385, 10 ).
sum_of_square_100_test() ->
?assertSumOfSquares( 338350, 100 ).
%% Subtract sum of squares from square of sums
difference_of_squares_0_test() ->
?assertDifference( 0, 0 ).
difference_of_squares_5_test() ->
?assertDifference( 170, 5 ).
difference_of_squares_10_test() ->
?assertDifference( 2640, 10 ).
difference_of_squares_100_test() ->
?assertDifference( 25164150, 100 ).
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84 entries across 84 versions & 1 rubygems