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-rw-r--r--spec/rubyspec/core/array/partition_spec.rb43
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diff --git a/spec/rubyspec/core/array/partition_spec.rb b/spec/rubyspec/core/array/partition_spec.rb
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+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