diff options
Diffstat (limited to 'spec/rubyspec/core/enumerable/min_by_spec.rb')
-rw-r--r-- | spec/rubyspec/core/enumerable/min_by_spec.rb | 81 |
1 files changed, 0 insertions, 81 deletions
diff --git a/spec/rubyspec/core/enumerable/min_by_spec.rb b/spec/rubyspec/core/enumerable/min_by_spec.rb deleted file mode 100644 index 24fe995f09..0000000000 --- a/spec/rubyspec/core/enumerable/min_by_spec.rb +++ /dev/null @@ -1,81 +0,0 @@ -require File.expand_path('../../../spec_helper', __FILE__) -require File.expand_path('../fixtures/classes', __FILE__) -require File.expand_path('../shared/enumerable_enumeratorized', __FILE__) - -describe "Enumerable#min_by" do - it "returns an enumerator if no block" do - EnumerableSpecs::Numerous.new(42).min_by.should be_an_instance_of(Enumerator) - end - - it "returns nil if #each yields no objects" do - EnumerableSpecs::Empty.new.min_by {|o| o.nonesuch }.should == nil - end - - it "returns the object for whom the value returned by block is the smallest" do - EnumerableSpecs::Numerous.new(*%w[3 2 1]).min_by {|obj| obj.to_i }.should == '1' - EnumerableSpecs::Numerous.new(*%w[five three]).min_by {|obj| obj.length }.should == 'five' - end - - it "returns the object that appears first in #each in case of a tie" do - a, b, c = '2', '1', '1' - EnumerableSpecs::Numerous.new(a, b, c).min_by {|obj| obj.to_i }.should equal(b) - end - - it "uses min.<=>(current) to determine order" do - a, b, c = (1..3).map{|n| EnumerableSpecs::ReverseComparable.new(n)} - - # Just using self here to avoid additional complexity - EnumerableSpecs::Numerous.new(a, b, c).min_by {|obj| obj }.should == c - end - - it "is able to return the minimum for enums that contain nils" do - enum = EnumerableSpecs::Numerous.new(nil, nil, true) - enum.min_by {|o| o.nil? ? 0 : 1 }.should == nil - enum.min_by {|o| o.nil? ? 1 : 0 }.should == true - end - - it "gathers whole arrays as elements when each yields multiple" do - multi = EnumerableSpecs::YieldsMulti.new - multi.min_by {|e| e.size}.should == [1, 2] - end - - it_behaves_like :enumerable_enumeratorized_with_origin_size, :min_by - - context "when called with an argument n" do - before :each do - @enum = EnumerableSpecs::Numerous.new(101, 55, 1, 20, 33, 500, 60) - end - - context "without a block" do - it "returns an enumerator" do - @enum.min_by(2).should be_an_instance_of(Enumerator) - end - end - - context "with a block" do - it "returns an array containing the minimum n elements based on the block's value" do - result = @enum.min_by(3) { |i| i.to_s } - result.should == [1, 101, 20] - end - - context "on a enumerable of length x where x < n" do - it "returns an array containing the minimum n elements of length n" do - result = @enum.min_by(500) { |i| i.to_s } - result.length.should == 7 - end - end - - context "when n is negative" do - it "raises an ArgumentError" do - lambda { @enum.min_by(-1) { |i| i.to_s } }.should raise_error(ArgumentError) - end - end - end - - context "when n is nil" do - it "returns the minimum element" do - @enum.min_by(nil) { |i| i.to_s }.should == 1 - end - end - end -end |