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33 lines
883 B
Ruby
33 lines
883 B
Ruby
require_relative '../../spec_helper'
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describe :enum_with_index, shared: true do
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require_relative '../../fixtures/enumerator/classes'
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before :each do
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@origin = [1, 2, 3, 4]
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@enum = @origin.to_enum
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end
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it "passes each element and its index to block" do
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a = []
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@enum.send(@method) { |o, i| a << [o, i] }
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a.should == [[1, 0], [2, 1], [3, 2], [4, 3]]
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end
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it "returns the object being enumerated when given a block" do
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@enum.send(@method) { |o, i| :glark }.should equal(@origin)
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end
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it "binds splat arguments properly" do
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acc = []
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@enum.send(@method) { |*b| c,d = b; acc << c; acc << d }
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[1, 0, 2, 1, 3, 2, 4, 3].should == acc
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end
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it "returns an enumerator if no block is supplied" do
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ewi = @enum.send(@method)
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ewi.should be_an_instance_of(Enumerator)
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ewi.to_a.should == [[1, 0], [2, 1], [3, 2], [4, 3]]
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end
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end
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