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Versions: 83
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Contents
require File.dirname(File.join(__rhoGetCurrentDir(), __FILE__)) + '/../../spec_helper'
describe "Fixnum#**" do
it "returns self raised to the given power" do
(2 ** 0).should == 1
(2 ** 1).should == 2
(2 ** 2).should == 4
(9 ** 0.5).to_s.should == '3.0'
(5 ** -1).to_f.to_s.should == '0.2'
(2 ** 40).should == 1099511627776
end
conflicts_with :Rational do
# ruby_bug "ruby-dev:32084", "1.8.6.138" do
# it "returns Infinity for 0**-1" do
# (0**-1).should be_kind_of(Float)
# (0**-1).infinite?.should == 1
# end
# end
it "raises a TypeError when given a non-Integer" do
lambda {
(obj = mock('10')).should_receive(:to_int).any_number_of_times.and_return(10)
13 ** obj
}.should raise_error(TypeError)
lambda { 13 ** "10" }.should raise_error(TypeError)
lambda { 13 ** :symbol }.should raise_error(TypeError)
end
end
end
Version data entries
83 entries across 83 versions & 1 rubygems