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* For easier modifications of ruby/spec by MRI developers. * .gitignore: track changes under spec. * spec/mspec, spec/rubyspec: add in-tree mspec and ruby/spec. These files can therefore be updated like any other file in MRI. Instructions are provided in spec/README. [Feature #13156] [ruby-core:79246] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58595 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
63 lines
2.1 KiB
Ruby
63 lines
2.1 KiB
Ruby
describe :enumerable_take, shared: true do
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before :each do
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@values = [4,3,2,1,0,-1]
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@enum = EnumerableSpecs::Numerous.new(*@values)
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end
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it "returns the first count elements if given a count" do
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@enum.send(@method, 2).should == [4, 3]
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@enum.send(@method, 4).should == [4, 3, 2, 1] # See redmine #1686 !
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end
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it "returns an empty array when passed count on an empty array" do
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empty = EnumerableSpecs::Empty.new
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empty.send(@method, 0).should == []
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empty.send(@method, 1).should == []
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empty.send(@method, 2).should == []
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end
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it "returns an empty array when passed count == 0" do
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@enum.send(@method, 0).should == []
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end
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it "returns an array containing the first element when passed count == 1" do
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@enum.send(@method, 1).should == [4]
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end
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it "raises an ArgumentError when count is negative" do
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lambda { @enum.send(@method, -1) }.should raise_error(ArgumentError)
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end
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it "returns the entire array when count > length" do
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@enum.send(@method, 100).should == @values
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@enum.send(@method, 8).should == @values # See redmine #1686 !
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end
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it "tries to convert the passed argument to an Integer using #to_int" do
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obj = mock('to_int')
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obj.should_receive(:to_int).and_return(3).at_most(:twice) # called twice, no apparent reason. See redmine #1554
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@enum.send(@method, obj).should == [4, 3, 2]
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end
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it "raises a TypeError if the passed argument is not numeric" do
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lambda { @enum.send(@method, nil) }.should raise_error(TypeError)
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lambda { @enum.send(@method, "a") }.should raise_error(TypeError)
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obj = mock("nonnumeric")
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lambda { @enum.send(@method, obj) }.should raise_error(TypeError)
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end
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it "gathers whole arrays as elements when each yields multiple" do
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multi = EnumerableSpecs::YieldsMulti.new
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multi.send(@method, 1).should == [[1, 2]]
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end
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it "consumes only what is needed" do
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thrower = EnumerableSpecs::ThrowingEach.new
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thrower.send(@method, 0).should == []
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counter = EnumerableSpecs::EachCounter.new(1,2,3,4)
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counter.send(@method, 2).should == [1,2]
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counter.times_called.should == 1
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counter.times_yielded.should == 2
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end
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end
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