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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
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