32 lines
693 B
Ruby
32 lines
693 B
Ruby
describe Gate do
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let(:klass) do
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Class.new(Gate) do
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def inputs_changed(vals)
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tot=0
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vals.each do |val|
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tot+=val
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end
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out.setval(tot)
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end
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end
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end
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it "calls #inputs_changed when input values change or an input is added" do
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a=Port.new(8)
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b=Port.new(8)
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gate=klass.new(a,b)
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expect(gate).to receive(:inputs_changed).with([8,0])
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a.setval(8)
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expect(gate).to receive(:inputs_changed).with([8,10])
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b.setval(10)
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end
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it "can perform computations in #inputs_changed" do
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a=Port.new(8)
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b=Port.new(8)
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gate=klass.new(a,b)
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a.setval(8)
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b.setval(10)
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expect(gate.out.val).to eq(18)
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end
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end
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