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Contents
describe Integer, "#trimorphic?" do
TRIMORPHIC = [0,1,4,5,6,9,24,25,49,51,75,76,99,125,249,251,375,
376,499,501,624,625,749,751,875,999,1249,3751,
4375,4999,5001,5625,6249,8751,9375,9376,9999,
18751,31249,40625,49999,50001,59375,68751,81249,
90624,90625]
it "returns true for trimorphic numbers" do
TRIMORPHIC.each do |number|
number.should be_trimorphic
end
end
it "returns false for non-trimorphic numbers" do
[2,3,7, 8752, 906266, 33333].each do |number|
number.should_not be_trimorphic
end
end
it "returns false for negative numbers" do
[2,3,4,7,9,8752, 906266, 33333].each do |number|
(-number).should_not be_trimorphic
end
end
end
Version data entries
36 entries across 36 versions & 1 rubygems