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Diffstat (limited to 'spec/ruby/core/array/reverse_spec.rb')
-rw-r--r-- | spec/ruby/core/array/reverse_spec.rb | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/spec/ruby/core/array/reverse_spec.rb b/spec/ruby/core/array/reverse_spec.rb new file mode 100644 index 0000000000..a3a6db9506 --- /dev/null +++ b/spec/ruby/core/array/reverse_spec.rb @@ -0,0 +1,42 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes', __FILE__) + +describe "Array#reverse" do + it "returns a new array with the elements in reverse order" do + [].reverse.should == [] + [1, 3, 5, 2].reverse.should == [2, 5, 3, 1] + end + + it "properly handles recursive arrays" do + empty = ArraySpecs.empty_recursive_array + empty.reverse.should == empty + + array = ArraySpecs.recursive_array + array.reverse.should == [array, array, array, array, array, 3.0, 'two', 1] + end + + it "does not return subclass instance on Array subclasses" do + ArraySpecs::MyArray[1, 2, 3].reverse.should be_an_instance_of(Array) + end +end + +describe "Array#reverse!" do + it "reverses the elements in place" do + a = [6, 3, 4, 2, 1] + a.reverse!.should equal(a) + a.should == [1, 2, 4, 3, 6] + [].reverse!.should == [] + end + + it "properly handles recursive arrays" do + empty = ArraySpecs.empty_recursive_array + empty.reverse!.should == [empty] + + array = ArraySpecs.recursive_array + array.reverse!.should == [array, array, array, array, array, 3.0, 'two', 1] + end + + it "raises a RuntimeError on a frozen array" do + lambda { ArraySpecs.frozen_array.reverse! }.should raise_error(RuntimeError) + end +end |