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Diffstat (limited to 'spec/ruby/core/array/partition_spec.rb')
-rw-r--r-- | spec/ruby/core/array/partition_spec.rb | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/spec/ruby/core/array/partition_spec.rb b/spec/ruby/core/array/partition_spec.rb new file mode 100644 index 0000000000..787b574c28 --- /dev/null +++ b/spec/ruby/core/array/partition_spec.rb @@ -0,0 +1,43 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes', __FILE__) + +describe "Array#partition" do + it "returns two arrays" do + [].partition {}.should == [[], []] + end + + it "returns in the left array values for which the block evaluates to true" do + ary = [0, 1, 2, 3, 4, 5] + + ary.partition { |i| true }.should == [ary, []] + ary.partition { |i| 5 }.should == [ary, []] + ary.partition { |i| false }.should == [[], ary] + ary.partition { |i| nil }.should == [[], ary] + ary.partition { |i| i % 2 == 0 }.should == [[0, 2, 4], [1, 3, 5]] + ary.partition { |i| i / 3 == 0 }.should == [[0, 1, 2], [3, 4, 5]] + end + + it "properly handles recursive arrays" do + empty = ArraySpecs.empty_recursive_array + empty.partition { true }.should == [[empty], []] + empty.partition { false }.should == [[], [empty]] + + array = ArraySpecs.recursive_array + array.partition { true }.should == [ + [1, 'two', 3.0, array, array, array, array, array], + [] + ] + condition = true + array.partition { condition = !condition }.should == [ + ['two', array, array, array], + [1, 3.0, array, array] + ] + end + + it "does not return subclass instances on Array subclasses" do + result = ArraySpecs::MyArray[1, 2, 3].partition { |x| x % 2 == 0 } + result.should be_an_instance_of(Array) + result[0].should be_an_instance_of(Array) + result[1].should be_an_instance_of(Array) + end +end |