### Question:
Connection implements Serializable { public double getInput() { return fromNeuron.getOutput(); } Connection(Neuron fromNeuron, Neuron toNeuron);  Connection(Neuron fromNeuron, Neuron toNeuron, Weight weight);  Connection(Neuron fromNeuron, Neuron toNeuron, double weightVal); final Weight getWeight(); final void setWeight(Weight weight); double getInput(); final double getWeightedInput(); final Neuron getFromNeuron(); final Neuron getToNeuron(); @Override Object clone(); @Override int hashCode(); @Override boolean equals(Object obj); @Override String toString();  }### Answer:
@Test public void testGetInput() { Connection instance = new Connection(fromNeuron, toNeuron, 1.0); fromNeuron.setOutput(0.5); double expResult = 0.5; double result = instance.getInput(); assertEquals(expResult, result, 0.0); }