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Contents
describe "Array#flatten" do
it "returns a one-dimensional flattening recursively" do
[[[1, [2, 3]], [2, 3, [4, [4, [5, 5]], [1, 2, 3]]], [4]], []].flatten.should == [1, 2, 3, 2, 3, 4, 4, 5, 5, 1, 2, 3, 4]
end
it "takes an optional argument that determines the level of recursion" do
[1, 2, [3, [4, 5]]].flatten(1).should == [1, 2, 3, [4, 5]]
end
it "is not destructive" do
ary = [1, [2, 3]]
ary.flatten
ary.should == [1, [2, 3]]
end
end
describe "Array#flatten!" do
it "modified array to produce a one-dimensional flattening recursively" do
a = [[[1, [2, 3]],[2, 3, [4, [4, [5, 5]], [1, 2, 3]]], [4]], []]
a.flatten!
a.should == [1, 2, 3, 2, 3, 4, 4, 5, 5, 1, 2, 3, 4]
end
it "returns self if made some modifications" do
a = [[[1, [2, 3]],[2, 3, [4, [4, [5, 5]], [1, 2, 3]]], [4]], []]
a.flatten!.should equal(a)
end
it "returns nil if no modifications took place" do
a = [1, 2, 3]
a.flatten!.should == nil
a = [1, [2, 3]]
a.flatten!.should_not == nil
end
it "takes an optional argument that determines the level of recursion" do
[1, 2, [3, [4, 5]]].flatten!(1).should == [1, 2, 3, [4, 5]]
end
end
Version data entries
23 entries across 23 versions & 1 rubygems