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require File.expand_path(File.dirname(__FILE__) + '/edgecase')
# You need to write the triangle method in the file 'triangle.rb'
require 'triangle.rb'
class AboutTriangleProject2 < EdgeCase::Koan
# The first assignment did not talk about how to handle errors.
# Let's handle that part now.
def test_illegal_triangles_throw_exceptions
assert_raise(TriangleError) do triangle(0, 0, 0) end
assert_raise(TriangleError) do triangle(3, 4, -5) end
assert_raise(TriangleError) do triangle(1, 1, 3) end
assert_raise(TriangleError) do triangle(2, 4, 2) end
#HINT: for tips, see