.constructCloudySprinklerRainWetGrassNetwork();
MockRandomizer r = new MockRandomizer(
new double[] { 0.5, 0.5, 0.5, 0.5 });
PriorSample ps = new PriorSample(r);
Map<RandomVariable, Object> event = ps.priorSample(bn);
Assert.assertEquals(4, event.keySet().size());
Assert.assertEquals(Boolean.TRUE, event.get(ExampleRV.CLOUDY_RV));
Assert.assertEquals(Boolean.FALSE, event.get(ExampleRV.SPRINKLER_RV));
Assert.assertEquals(Boolean.TRUE, event.get(ExampleRV.RAIN_RV));