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401b64c4e8
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62656 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
101 lines
2.9 KiB
Ruby
101 lines
2.9 KiB
Ruby
require_relative '../../spec_helper'
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require_relative '../enumerable/shared/enumeratorized'
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describe "Array#cycle" do
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before :each do
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ScratchPad.record []
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@array = [1, 2, 3]
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@prc = lambda { |x| ScratchPad << x }
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end
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it "does not yield and returns nil when the array is empty and passed value is an integer" do
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[].cycle(6, &@prc).should be_nil
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ScratchPad.recorded.should == []
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end
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it "does not yield and returns nil when the array is empty and passed value is nil" do
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[].cycle(nil, &@prc).should be_nil
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ScratchPad.recorded.should == []
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end
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it "does not yield and returns nil when passed 0" do
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@array.cycle(0, &@prc).should be_nil
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ScratchPad.recorded.should == []
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end
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it "iterates the array 'count' times yielding each item to the block" do
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@array.cycle(2, &@prc)
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ScratchPad.recorded.should == [1, 2, 3, 1, 2, 3]
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end
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it "iterates indefinitely when not passed a count" do
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@array.cycle do |x|
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ScratchPad << x
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break if ScratchPad.recorded.size > 7
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end
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ScratchPad.recorded.should == [1, 2, 3, 1, 2, 3, 1, 2]
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end
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it "iterates indefinitely when passed nil" do
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@array.cycle(nil) do |x|
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ScratchPad << x
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break if ScratchPad.recorded.size > 7
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end
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ScratchPad.recorded.should == [1, 2, 3, 1, 2, 3, 1, 2]
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end
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it "does not rescue StopIteration when not passed a count" do
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lambda do
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@array.cycle { raise StopIteration }
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end.should raise_error(StopIteration)
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end
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it "does not rescue StopIteration when passed a count" do
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lambda do
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@array.cycle(3) { raise StopIteration }
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end.should raise_error(StopIteration)
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end
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it "iterates the array Integer(count) times when passed a Float count" do
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@array.cycle(2.7, &@prc)
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ScratchPad.recorded.should == [1, 2, 3, 1, 2, 3]
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end
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it "calls #to_int to convert count to an Integer" do
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count = mock("cycle count 2")
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count.should_receive(:to_int).and_return(2)
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@array.cycle(count, &@prc)
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ScratchPad.recorded.should == [1, 2, 3, 1, 2, 3]
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end
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it "raises a TypeError if #to_int does not return an Integer" do
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count = mock("cycle count 2")
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count.should_receive(:to_int).and_return("2")
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lambda { @array.cycle(count, &@prc) }.should raise_error(TypeError)
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end
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it "raises a TypeError if passed a String" do
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lambda { @array.cycle("4") { } }.should raise_error(TypeError)
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end
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it "raises a TypeError if passed an Object" do
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lambda { @array.cycle(mock("cycle count")) { } }.should raise_error(TypeError)
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end
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it "raises a TypeError if passed true" do
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lambda { @array.cycle(true) { } }.should raise_error(TypeError)
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end
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it "raises a TypeError if passed false" do
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lambda { @array.cycle(false) { } }.should raise_error(TypeError)
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end
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before :all do
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@object = [1, 2, 3, 4]
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@empty_object = []
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end
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it_should_behave_like :enumeratorized_with_cycle_size
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end
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