Sha256: 2eda567dd6c23eac57bef0ac951ceba6978a52295164b67253d9d2b03d91ae05
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Size: 558 Bytes
Versions: 12
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Stored size: 558 Bytes
Contents
describe "Enumerable#group_by" do
it "returns a hash with values grouped according to the block" do
grouped = [:foo, :bar, :baz].group_by { |word| word[0, 1].to_sym }
grouped.should == { :f => [:foo], :b => [:bar, :baz] }
end
it "returns an empty hash for empty enumerables" do
[].group_by { |x| x }.should == {}
end
it "allows nil as a valid key" do
grouped = [[nil, :foo], [nil, :baz], [42, 100]].group_by { |arr| arr.first }
grouped[nil].should == [[nil, :foo], [nil, :baz]]
grouped[42].should == [[42, 100]]
end
end
Version data entries
12 entries across 12 versions & 1 rubygems