| /* |
| * Copyright 2017, Yahoo! Inc. |
| * Licensed under the terms of the Apache License 2.0. See LICENSE file at the project root for terms. |
| */ |
| |
| package com.yahoo.sketches.pig.hll; |
| |
| import org.apache.pig.EvalFunc; |
| import org.apache.pig.data.DataByteArray; |
| import org.apache.pig.data.TupleFactory; |
| import org.testng.annotations.Test; |
| |
| import com.yahoo.sketches.hll.HllSketch; |
| |
| import junit.framework.Assert; |
| |
| public class SketchToEstimateTest { |
| |
| private static final TupleFactory tupleFactory = TupleFactory.getInstance(); |
| |
| @Test |
| public void nullInputTuple() throws Exception { |
| EvalFunc<Double> func = new SketchToEstimate(); |
| Double result = func.exec(null); |
| Assert.assertNull(result); |
| } |
| |
| @Test |
| public void emptyInputTuple() throws Exception { |
| EvalFunc<Double> func = new SketchToEstimate(); |
| Double result = func.exec(tupleFactory.newTuple()); |
| Assert.assertNull(result); |
| } |
| |
| @Test |
| public void normalCase() throws Exception { |
| EvalFunc<Double> func = new SketchToEstimate(); |
| HllSketch sketch = new HllSketch(12); |
| sketch.update(1); |
| sketch.update(2); |
| Double result = func.exec(tupleFactory.newTuple(new DataByteArray(sketch.toCompactByteArray()))); |
| Assert.assertNotNull(result); |
| Assert.assertEquals(result, 2.0, 0.01); |
| } |
| |
| } |