| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.flink.api.java.summarize.aggregation; |
| |
| import org.apache.flink.api.java.summarize.NumericColumnSummary; |
| |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| /** |
| * Tests for {@link IntegerSummaryAggregator}. |
| */ |
| public class IntegerSummaryAggregatorTest { |
| |
| @Test |
| public void testIsNan() throws Exception { |
| IntegerSummaryAggregator ag = new IntegerSummaryAggregator(); |
| // always false for Integer |
| Assert.assertFalse(ag.isNan(-1)); |
| Assert.assertFalse(ag.isNan(0)); |
| Assert.assertFalse(ag.isNan(23)); |
| Assert.assertFalse(ag.isNan(Integer.MAX_VALUE)); |
| Assert.assertFalse(ag.isNan(Integer.MIN_VALUE)); |
| Assert.assertFalse(ag.isNan(null)); |
| } |
| |
| @Test |
| public void testIsInfinite() throws Exception { |
| IntegerSummaryAggregator ag = new IntegerSummaryAggregator(); |
| // always false for Integer |
| Assert.assertFalse(ag.isInfinite(-1)); |
| Assert.assertFalse(ag.isInfinite(0)); |
| Assert.assertFalse(ag.isInfinite(23)); |
| Assert.assertFalse(ag.isInfinite(Integer.MAX_VALUE)); |
| Assert.assertFalse(ag.isInfinite(Integer.MIN_VALUE)); |
| Assert.assertFalse(ag.isInfinite(null)); |
| } |
| |
| @Test |
| public void testMean() throws Exception { |
| Assert.assertEquals(50.0, summarize(0, 100).getMean(), 0.0); |
| Assert.assertEquals(33.333333, summarize(0, 0, 100).getMean(), 0.00001); |
| Assert.assertEquals(50.0, summarize(0, 0, 100, 100).getMean(), 0.0); |
| Assert.assertEquals(50.0, summarize(0, 100, null).getMean(), 0.0); |
| Assert.assertNull(summarize().getMean()); |
| } |
| |
| @Test |
| public void testSum() throws Exception { |
| Assert.assertEquals(100, summarize(0, 100).getSum().intValue()); |
| Assert.assertEquals(15, summarize(1, 2, 3, 4, 5).getSum().intValue()); |
| Assert.assertEquals(0, summarize(-100, 0, 100, null).getSum().intValue()); |
| Assert.assertEquals(90, summarize(-10, 100, null).getSum().intValue()); |
| Assert.assertNull(summarize().getSum()); |
| } |
| |
| @Test |
| public void testMax() throws Exception { |
| Assert.assertEquals(1001, summarize(-1000, 0, 1, 50, 999, 1001).getMax().intValue()); |
| Assert.assertEquals(0, summarize(Integer.MIN_VALUE, -1000, 0).getMax().intValue()); |
| Assert.assertEquals(11, summarize(1, 8, 7, 6, 9, 10, 2, 3, 5, 0, 11, -2, 3).getMax().intValue()); |
| Assert.assertEquals(11, summarize(1, 8, 7, 6, 9, null, 10, 2, 3, 5, null, 0, 11, -2, 3).getMax().intValue()); |
| Assert.assertNull(summarize().getMax()); |
| } |
| |
| @Test |
| public void testMin() throws Exception { |
| Assert.assertEquals(-1000, summarize(-1000, 0, 1, 50, 999, 1001).getMin().intValue()); |
| Assert.assertEquals(Integer.MIN_VALUE, summarize(Integer.MIN_VALUE, -1000, 0).getMin().intValue()); |
| Assert.assertEquals(-2, summarize(1, 8, 7, 6, 9, 10, 2, 3, 5, 0, 11, -2, 3).getMin().intValue()); |
| Assert.assertEquals(-2, summarize(1, 8, 7, 6, 9, null, 10, 2, 3, 5, null, 0, 11, -2, 3).getMin().intValue()); |
| Assert.assertNull(summarize().getMin()); |
| } |
| |
| /** |
| * Helper method for summarizing a list of values. |
| */ |
| protected NumericColumnSummary<Integer> summarize(Integer... values) { |
| |
| return new AggregateCombineHarness<Integer, NumericColumnSummary<Integer>, IntegerSummaryAggregator>() { |
| |
| @Override |
| protected void compareResults(NumericColumnSummary<Integer> result1, NumericColumnSummary<Integer> result2) { |
| |
| Assert.assertEquals(result1.getTotalCount(), result2.getTotalCount()); |
| Assert.assertEquals(result1.getNullCount(), result2.getNullCount()); |
| Assert.assertEquals(result1.getMissingCount(), result2.getMissingCount()); |
| Assert.assertEquals(result1.getNonMissingCount(), result2.getNonMissingCount()); |
| Assert.assertEquals(result1.getInfinityCount(), result2.getInfinityCount()); |
| Assert.assertEquals(result1.getNanCount(), result2.getNanCount()); |
| |
| Assert.assertEquals(result1.containsNull(), result2.containsNull()); |
| Assert.assertEquals(result1.containsNonNull(), result2.containsNonNull()); |
| |
| Assert.assertEquals(result1.getMin().intValue(), result2.getMin().intValue()); |
| Assert.assertEquals(result1.getMax().intValue(), result2.getMax().intValue()); |
| Assert.assertEquals(result1.getSum().intValue(), result2.getSum().intValue()); |
| Assert.assertEquals(result1.getMean().doubleValue(), result2.getMean().doubleValue(), 1e-12d); |
| Assert.assertEquals(result1.getVariance().doubleValue(), result2.getVariance().doubleValue(), 1e-9d); |
| Assert.assertEquals(result1.getStandardDeviation().doubleValue(), result2.getStandardDeviation().doubleValue(), 1e-12d); |
| } |
| }.summarize(values); |
| } |
| |
| } |