| /* |
| * 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.beam.sdk.util; |
| |
| import static org.hamcrest.MatcherAssert.assertThat; |
| import static org.hamcrest.Matchers.equalTo; |
| import static org.junit.Assert.assertThrows; |
| |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** Tests for {@link HistogramData}. */ |
| @RunWith(JUnit4.class) |
| public class HistogramDataTest { |
| |
| @Test |
| public void testOutOfRangeWarning() { |
| HistogramData histogramData = HistogramData.linear(0, 20, 5); |
| histogramData.record(100); |
| assertThat(histogramData.getTotalCount(), equalTo(1L)); |
| } |
| |
| @Test |
| public void testCheckBoundaryBuckets() { |
| HistogramData histogramData = HistogramData.linear(0, 20, 5); |
| histogramData.record(0); |
| histogramData.record(99.9); |
| assertThat(histogramData.getCount(0), equalTo(1L)); |
| assertThat(histogramData.getCount(4), equalTo(1L)); |
| } |
| |
| @Test |
| public void testFractionalBuckets() { |
| HistogramData histogramData1 = HistogramData.linear(0, 10.0 / 3, 3); |
| histogramData1.record(3.33); |
| histogramData1.record(6.66); |
| assertThat(histogramData1.getCount(0), equalTo(1L)); |
| assertThat(histogramData1.getCount(1), equalTo(1L)); |
| |
| HistogramData histogramData2 = HistogramData.linear(0, 10.0 / 3, 3); |
| histogramData2.record(3.34); |
| histogramData2.record(6.67); |
| assertThat(histogramData2.getCount(1), equalTo(1L)); |
| assertThat(histogramData2.getCount(2), equalTo(1L)); |
| } |
| |
| @Test |
| public void testP50() { |
| HistogramData histogramData1 = HistogramData.linear(0, 0.2, 50); |
| histogramData1.record(0, 1, 2, 3, 4, 5, 6, 7, 8, 9); |
| assertThat(String.format("%.3f", histogramData1.p50()), equalTo("4.200")); |
| |
| HistogramData histogramData2 = HistogramData.linear(0, 0.02, 50); |
| histogramData2.record(0, 0, 0); |
| assertThat(String.format("%.3f", histogramData2.p50()), equalTo("0.010")); |
| } |
| |
| @Test |
| public void testP90() { |
| HistogramData histogramData1 = HistogramData.linear(0, 0.2, 50); |
| histogramData1.record(0, 1, 2, 3, 4, 5, 6, 7, 8, 9); |
| assertThat(String.format("%.3f", histogramData1.p90()), equalTo("8.200")); |
| |
| HistogramData histogramData2 = HistogramData.linear(0, 0.02, 50); |
| histogramData2.record(0, 0, 0); |
| assertThat(String.format("%.3f", histogramData2.p90()), equalTo("0.018")); |
| } |
| |
| @Test |
| public void testP99() { |
| HistogramData histogramData1 = HistogramData.linear(0, 0.2, 50); |
| histogramData1.record(0, 1, 2, 3, 4, 5, 6, 7, 8, 9); |
| assertThat(String.format("%.3f", histogramData1.p99()), equalTo("9.180")); |
| |
| HistogramData histogramData2 = HistogramData.linear(0, 0.02, 50); |
| histogramData2.record(0, 0, 0); |
| assertThat(String.format("%.3f", histogramData2.p99()), equalTo("0.020")); |
| } |
| |
| @Test |
| public void testP90Negative() { |
| HistogramData histogramData1 = HistogramData.linear(-10, 0.2, 50); |
| histogramData1.record(-1, -2, -3, -4, -5, -6, -7, -8, -9, -10); |
| assertThat(String.format("%.3f", histogramData1.p90()), equalTo("-1.800")); |
| |
| HistogramData histogramData2 = HistogramData.linear(-1, 0.02, 50); |
| histogramData2.record(-1, -1, -1); |
| assertThat(String.format("%.3f", histogramData2.p90()), equalTo("-0.982")); |
| } |
| |
| @Test |
| public void testP90NegativeToPositive() { |
| HistogramData histogramData1 = HistogramData.linear(-5, 0.2, 50); |
| histogramData1.record(-1, -2, -3, -4, -5, 0, 1, 2, 3, 4); |
| assertThat(String.format("%.3f", histogramData1.p90()), equalTo("3.200")); |
| |
| HistogramData histogramData2 = HistogramData.linear(-0.5, 0.02, 50); |
| histogramData2.record(-0.5, -0.5, -0.5); |
| assertThat(String.format("%.3f", histogramData2.p90()), equalTo("-0.482")); |
| } |
| |
| @Test |
| public void testP50NegativeInfinity() { |
| HistogramData histogramData = HistogramData.linear(0, 0.2, 50); |
| histogramData.record(-1, -2, -3, -4, -5, 0, 1, 2, 3, 4); |
| assertThat(histogramData.p50(), equalTo(Double.NEGATIVE_INFINITY)); |
| } |
| |
| @Test |
| public void testP50PositiveInfinity() { |
| HistogramData histogramData = HistogramData.linear(0, 0.2, 50); |
| histogramData.record(6, 7, 8, 9, 10, 11, 12, 13, 14, 15); |
| assertThat(histogramData.p50(), equalTo(Double.POSITIVE_INFINITY)); |
| } |
| |
| @Test |
| public void testEmptyP99() { |
| HistogramData histogramData = HistogramData.linear(0, 0.2, 50); |
| assertThrows(RuntimeException.class, histogramData::p99); |
| } |
| |
| @Test |
| public void testClear() { |
| HistogramData histogramData = HistogramData.linear(0, 0.2, 50); |
| histogramData.record(-1, 1, 2, 3); |
| assertThat(histogramData.getTotalCount(), equalTo(4L)); |
| assertThat(histogramData.getCount(5), equalTo(1L)); |
| histogramData.clear(); |
| assertThat(histogramData.getTotalCount(), equalTo(0L)); |
| assertThat(histogramData.getCount(5), equalTo(0L)); |
| } |
| |
| @Test |
| public void testUpdateUsingDoublesAndCumulative() { |
| HistogramData data = HistogramData.linear(0, 2, 2); |
| data.record(-1); // to -Inf bucket |
| data.record(0); // bucket 0 |
| data.record(1); |
| data.record(3); // bucket 1 |
| data.record(4); // to Inf bucket |
| assertThat(data.getCount(0), equalTo(2L)); |
| assertThat(data.getCount(1), equalTo(1L)); |
| assertThat(data.getTotalCount(), equalTo(5L)); |
| |
| // Now try updating it with another HistogramData |
| HistogramData data2 = HistogramData.linear(0, 2, 2); |
| data2.record(-1); // to -Inf bucket |
| data2.record(-1); // to -Inf bucket |
| data2.record(0); // bucket 0 |
| data2.record(0); |
| data2.record(1); |
| data2.record(1); |
| data2.record(3); // bucket 1 |
| data2.record(3); |
| data2.record(4); // to Inf bucket |
| data2.record(4); |
| assertThat(data2.getCount(0), equalTo(4L)); |
| assertThat(data2.getCount(1), equalTo(2L)); |
| assertThat(data2.getTotalCount(), equalTo(10L)); |
| |
| data.update(data2); |
| assertThat(data.getCount(0), equalTo(6L)); |
| assertThat(data.getCount(1), equalTo(3L)); |
| assertThat(data.getTotalCount(), equalTo(15L)); |
| } |
| |
| @Test |
| public void testIncrementBucketCountByIndex() { |
| HistogramData data = HistogramData.linear(0, 2, 2); |
| data.incBottomBucketCount(1); |
| data.incBucketCount(0, 2); |
| data.incBucketCount(1, 3); |
| data.incTopBucketCount(4); |
| |
| assertThat(data.getBottomBucketCount(), equalTo(1L)); |
| assertThat(data.getCount(0), equalTo(2L)); |
| assertThat(data.getCount(1), equalTo(3L)); |
| assertThat(data.getTopBucketCount(), equalTo(4L)); |
| assertThat(data.getTotalCount(), equalTo(10L)); |
| } |
| } |