### Question:
DecisionTree implements TreeBasedClassifier { @Override public Prediction predict(Example test) { TerminalNode terminalNode = findTerminal(test); return terminalNode.getPrediction(); } DecisionTree(TreeNode root); @Override Prediction predict(Example test); TerminalNode findTerminal(Example example); TreeNode findByID(String id); @Override void update(Example train); @Override String toString();  }### Answer:
@Test public void testPredict() { DecisionTree tree = buildTestTree(); NumericPrediction prediction = (NumericPrediction) tree.predict(new Example(null, NumericFeature.forValue(0.5))); assertEquals(1.0, prediction.getPrediction()); }