mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
1d15d5f080
* Other ruby implementations use the spec/ruby directory. [Misc #13792] [ruby-core:82287] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59979 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
53 lines
1.6 KiB
Ruby
53 lines
1.6 KiB
Ruby
require File.expand_path('../../../spec_helper', __FILE__)
|
|
|
|
describe "Integer#gcdlcm" do
|
|
it "returns [self, self] if self is equal to the argument" do
|
|
1.gcdlcm(1).should == [1, 1]
|
|
398.gcdlcm(398).should == [398, 398]
|
|
end
|
|
|
|
it "returns an Array" do
|
|
36.gcdlcm(6).should be_kind_of(Array)
|
|
4.gcdlcm(20981).should be_kind_of(Array)
|
|
end
|
|
|
|
it "returns a two-element Array" do
|
|
36.gcdlcm(876).size.should == 2
|
|
29.gcdlcm(17).size.should == 2
|
|
end
|
|
|
|
it "returns the greatest common divisor of self and argument as the first element" do
|
|
10.gcdlcm(5)[0].should == 10.gcd(5)
|
|
200.gcdlcm(20)[0].should == 200.gcd(20)
|
|
end
|
|
|
|
it "returns the least common multiple of self and argument as the last element" do
|
|
10.gcdlcm(5)[1].should == 10.lcm(5)
|
|
200.gcdlcm(20)[1].should == 200.lcm(20)
|
|
end
|
|
|
|
it "accepts a Bignum argument" do
|
|
bignum = 91999**99
|
|
bignum.should be_kind_of(Bignum)
|
|
99.gcdlcm(bignum).should == [99.gcd(bignum), 99.lcm(bignum)]
|
|
end
|
|
|
|
it "works if self is a Bignum" do
|
|
bignum = 9999**89
|
|
bignum.should be_kind_of(Bignum)
|
|
bignum.gcdlcm(99).should == [bignum.gcd(99), bignum.lcm(99)]
|
|
end
|
|
|
|
it "raises an ArgumentError if not given an argument" do
|
|
lambda { 12.gcdlcm }.should raise_error(ArgumentError)
|
|
end
|
|
|
|
it "raises an ArgumentError if given more than one argument" do
|
|
lambda { 12.gcdlcm(30, 20) }.should raise_error(ArgumentError)
|
|
end
|
|
|
|
it "raises a TypeError unless the argument is an Integer" do
|
|
lambda { 39.gcdlcm(3.8) }.should raise_error(TypeError)
|
|
lambda { 45872.gcdlcm([]) }.should raise_error(TypeError)
|
|
end
|
|
end
|