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Diffstat (limited to 'spec/ruby/core/array/shared/unshift.rb')
-rw-r--r-- | spec/ruby/core/array/shared/unshift.rb | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/spec/ruby/core/array/shared/unshift.rb b/spec/ruby/core/array/shared/unshift.rb new file mode 100644 index 0000000000..367bab4166 --- /dev/null +++ b/spec/ruby/core/array/shared/unshift.rb @@ -0,0 +1,46 @@ +describe :array_unshift, shared: true do + it "prepends object to the original array" do + a = [1, 2, 3] + a.send(@method, "a").should equal(a) + a.should == ['a', 1, 2, 3] + a.send(@method).should equal(a) + a.should == ['a', 1, 2, 3] + a.send(@method, 5, 4, 3) + a.should == [5, 4, 3, 'a', 1, 2, 3] + + # shift all but one element + a = [1, 2] + a.shift + a.send(@method, 3, 4) + a.should == [3, 4, 2] + + # now shift all elements + a.shift + a.shift + a.shift + a.send(@method, 3, 4) + a.should == [3, 4] + end + + it "quietly ignores unshifting nothing" do + [].send(@method).should == [] + end + + it "properly handles recursive arrays" do + empty = ArraySpecs.empty_recursive_array + empty.send(@method, :new).should == [:new, empty] + + array = ArraySpecs.recursive_array + array.send(@method, :new) + array[0..5].should == [:new, 1, 'two', 3.0, array, array] + end + + it "raises a RuntimeError on a frozen array when the array is modified" do + lambda { ArraySpecs.frozen_array.send(@method, 1) }.should raise_error(RuntimeError) + end + + # see [ruby-core:23666] + it "raises a RuntimeError on a frozen array when the array would not be modified" do + lambda { ArraySpecs.frozen_array.send(@method) }.should raise_error(RuntimeError) + end +end |