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* 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
50 lines
1.4 KiB
Ruby
50 lines
1.4 KiB
Ruby
require File.expand_path('../../../spec_helper', __FILE__)
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require File.expand_path('../fixtures/classes', __FILE__)
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describe "Array#unshift" do
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it "prepends object to the original array" do
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a = [1, 2, 3]
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a.unshift("a").should equal(a)
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a.should == ['a', 1, 2, 3]
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a.unshift().should equal(a)
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a.should == ['a', 1, 2, 3]
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a.unshift(5, 4, 3)
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a.should == [5, 4, 3, 'a', 1, 2, 3]
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# shift all but one element
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a = [1, 2]
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a.shift
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a.unshift(3, 4)
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a.should == [3, 4, 2]
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# now shift all elements
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a.shift
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a.shift
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a.shift
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a.unshift(3, 4)
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a.should == [3, 4]
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end
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it "quietly ignores unshifting nothing" do
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[].unshift().should == []
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[].unshift(*[]).should == []
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end
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it "properly handles recursive arrays" do
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empty = ArraySpecs.empty_recursive_array
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empty.unshift(:new).should == [:new, empty]
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array = ArraySpecs.recursive_array
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array.unshift(:new)
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array[0..5].should == [:new, 1, 'two', 3.0, array, array]
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end
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it "raises a RuntimeError on a frozen array when the array is modified" do
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lambda { ArraySpecs.frozen_array.unshift(1) }.should raise_error(RuntimeError)
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end
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# see [ruby-core:23666]
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it "raises a RuntimeError on a frozen array when the array would not be modified" do
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lambda { ArraySpecs.frozen_array.unshift }.should raise_error(RuntimeError)
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end
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end
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