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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
77 lines
2.3 KiB
Ruby
77 lines
2.3 KiB
Ruby
require File.expand_path('../../../spec_helper', __FILE__)
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require File.expand_path('../shared/to_i', __FILE__)
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describe "Integer#round" do
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it_behaves_like(:integer_to_i, :round)
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ruby_version_is ""..."2.5" do
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it "rounds itself as a float if passed a positive precision" do
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[2, -4, 10**70, -10**100].each do |v|
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v.round(42).should eql(v.to_f)
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end
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end
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end
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ruby_version_is "2.5" do
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it "returns itself if passed a positive precision" do
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[2, -4, 10**70, -10**100].each do |v|
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v.round(42).should eql(v)
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end
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end
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end
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it "returns itself if passed zero" do
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[2, -4, 10**70, -10**100].each do |v|
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v.round(0).should eql(v)
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end
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end
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# redmine:5228
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it "returns itself rounded if passed a negative value" do
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+249.round(-2).should eql(+200)
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-249.round(-2).should eql(-200)
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(+25 * 10**70 - 1).round(-71).should eql(+20 * 10**70)
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(-25 * 10**70 + 1).round(-71).should eql(-20 * 10**70)
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end
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it "returns itself rounded to nearest if passed a negative value" do
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+250.round(-2).should eql(+300)
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-250.round(-2).should eql(-300)
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(+25 * 10**70).round(-71).should eql(+30 * 10**70)
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(-25 * 10**70).round(-71).should eql(-30 * 10**70)
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end
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platform_is_not wordsize: 32 do
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it "raises a RangeError when passed a big negative value" do
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lambda { 42.round(fixnum_min) }.should raise_error(RangeError)
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end
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end
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it "raises a RangeError when passed Float::INFINITY" do
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lambda { 42.round(Float::INFINITY) }.should raise_error(RangeError)
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end
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it "raises a RangeError when passed a beyond signed int" do
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lambda { 42.round(1<<31) }.should raise_error(RangeError)
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end
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it "raises a TypeError when passed a String" do
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lambda { 42.round("4") }.should raise_error(TypeError)
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end
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it "raises a TypeError when its argument cannot be converted to an Integer" do
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lambda { 42.round(nil) }.should raise_error(TypeError)
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end
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it "calls #to_int on the argument to convert it to an Integer" do
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obj = mock("Object")
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obj.should_receive(:to_int).and_return(0)
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42.round(obj)
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end
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it "raises a TypeError when #to_int does not return an Integer" do
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obj = mock("Object")
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obj.stub!(:to_int).and_return([])
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lambda { 42.round(obj) }.should raise_error(TypeError)
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end
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end
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