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require File.expand_path('../../../spec_helper', __FILE__)
describe "Float#numerator" do
before :all do
@numbers = [
29871.2722891,
999.1**99.928888,
-72628191273.22,
29282.2827,
-2927.00091,
12.0,
Float::MAX,
]
end
it "converts self to a Rational object then returns its numerator" do
@numbers.each do |number|
number.infinite?.should be_nil
number.numerator.should == Rational(number).numerator
end
end
it "returns 0 for 0.0" do
0.0.numerator.should == 0
end
it "returns NaN for NaN" do
nan_value.numerator.nan?.should be_true
end
it "returns Infinity for Infinity" do
infinity_value.numerator.infinite?.should == 1
end
it "returns -Infinity for -Infinity" do
(-infinity_value).numerator.infinite?.should == -1
end
end
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