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require File.expand_path('../../../spec_helper', __FILE__)
describe "Numeric#abs2" do
before :each do
@numbers = [
0,
0.0,
1,
20,
bignum_value,
278202.292871,
72829,
3.333333333333,
0.1,
infinity_value
].map { |n| [-n, n] }.flatten
end
it "returns the square of the absolute value of self" do
@numbers.each do |number|
number.abs2.should eql(number.abs ** 2)
end
end
it "calls #* on self" do
number = mock_numeric('numeric')
number.should_receive(:*).and_return(:result)
number.abs2.should == :result
end
it "returns NaN when self is NaN" do
nan_value.abs2.nan?.should be_true
end
end
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