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* For easier modifications of ruby/spec by MRI developers. * .gitignore: track changes under spec. * spec/mspec, spec/rubyspec: add in-tree mspec and ruby/spec. These files can therefore be updated like any other file in MRI. Instructions are provided in spec/README. [Feature #13156] [ruby-core:79246] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58595 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
50 lines
1.2 KiB
Ruby
50 lines
1.2 KiB
Ruby
require File.expand_path('../../../../spec_helper', __FILE__)
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describe :numeric_polar, shared: true do
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before :each do
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@pos_numbers = [
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1,
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3898172610**9,
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987.18273,
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Float::MAX,
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Rational(13,7),
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infinity_value,
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]
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@neg_numbers = @pos_numbers.map {|n| -n}
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@numbers = @pos_numbers + @neg_numbers
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@numbers.push(0, 0.0)
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end
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it "returns a two-element Array" do
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@numbers.each do |number|
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number.polar.should be_an_instance_of(Array)
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number.polar.size.should == 2
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end
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end
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it "sets the first value to the absolute value of self" do
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@numbers.each do |number|
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number.polar.first.should == number.abs
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end
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end
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it "sets the last value to 0 if self is positive" do
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(@numbers - @neg_numbers).each do |number|
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number.should >= 0
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number.polar.last.should == 0
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end
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end
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it "sets the last value to Pi if self is negative" do
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@neg_numbers.each do |number|
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number.should < 0
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number.polar.last.should == Math::PI
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end
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end
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it "returns [NaN, NaN] if self is NaN" do
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nan_value.polar.size.should == 2
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nan_value.polar.first.nan?.should be_true
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nan_value.polar.last.nan?.should be_true
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end
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end
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