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