Home | History | Annotate | Download | only in config 
      1 /*
      2  * Copyright 2017, OpenCensus Authors
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *     http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package io.opencensus.trace.config;
     18 
     19 import static com.google.common.truth.Truth.assertThat;
     20 
     21 import io.opencensus.trace.samplers.Samplers;
     22 import org.junit.Test;
     23 import org.junit.runner.RunWith;
     24 import org.junit.runners.JUnit4;
     25 
     26 /** Unit tests for {@link TraceParams}. */
     27 @RunWith(JUnit4.class)
     28 public class TraceParamsTest {
     29   @Test
     30   public void defaultTraceParams() {
     31     assertThat(TraceParams.DEFAULT.getSampler()).isEqualTo(Samplers.probabilitySampler(1e-4));
     32     assertThat(TraceParams.DEFAULT.getMaxNumberOfAttributes()).isEqualTo(32);
     33     assertThat(TraceParams.DEFAULT.getMaxNumberOfAnnotations()).isEqualTo(32);
     34     assertThat(TraceParams.DEFAULT.getMaxNumberOfNetworkEvents()).isEqualTo(128);
     35     assertThat(TraceParams.DEFAULT.getMaxNumberOfMessageEvents()).isEqualTo(128);
     36     assertThat(TraceParams.DEFAULT.getMaxNumberOfLinks()).isEqualTo(32);
     37   }
     38 
     39   @Test(expected = NullPointerException.class)
     40   public void updateTraceParams_NullSampler() {
     41     TraceParams.DEFAULT.toBuilder().setSampler(null).build();
     42   }
     43 
     44   @Test(expected = IllegalArgumentException.class)
     45   public void updateTraceParams_NonPositiveMaxNumberOfAttributes() {
     46     TraceParams.DEFAULT.toBuilder().setMaxNumberOfAttributes(0).build();
     47   }
     48 
     49   @Test(expected = IllegalArgumentException.class)
     50   public void updateTraceParams_NonPositiveMaxNumberOfAnnotations() {
     51     TraceParams.DEFAULT.toBuilder().setMaxNumberOfAnnotations(0).build();
     52   }
     53 
     54   @Test(expected = IllegalArgumentException.class)
     55   public void updateTraceParams_NonPositiveMaxNumberOfNetworkEvents() {
     56     TraceParams.DEFAULT.toBuilder().setMaxNumberOfNetworkEvents(0).build();
     57   }
     58 
     59   @Test(expected = IllegalArgumentException.class)
     60   public void updateTraceParams_NonPositiveMaxNumberOfMessageEvents() {
     61     TraceParams.DEFAULT.toBuilder().setMaxNumberOfMessageEvents(0).build();
     62   }
     63 
     64   @Test(expected = IllegalArgumentException.class)
     65   public void updateTraceParams_NonPositiveMaxNumberOfLinks() {
     66     TraceParams.DEFAULT.toBuilder().setMaxNumberOfLinks(0).build();
     67   }
     68 
     69   @Test
     70   public void updateTraceParams_All() {
     71     TraceParams traceParams =
     72         TraceParams.DEFAULT
     73             .toBuilder()
     74             .setSampler(Samplers.alwaysSample())
     75             .setMaxNumberOfAttributes(8)
     76             .setMaxNumberOfAnnotations(9)
     77             .setMaxNumberOfMessageEvents(10)
     78             .setMaxNumberOfLinks(11)
     79             .build();
     80     assertThat(traceParams.getSampler()).isEqualTo(Samplers.alwaysSample());
     81     assertThat(traceParams.getMaxNumberOfAttributes()).isEqualTo(8);
     82     assertThat(traceParams.getMaxNumberOfAnnotations()).isEqualTo(9);
     83     // test maxNumberOfNetworkEvent can be set via maxNumberOfMessageEvent
     84     assertThat(traceParams.getMaxNumberOfNetworkEvents()).isEqualTo(10);
     85     assertThat(traceParams.getMaxNumberOfMessageEvents()).isEqualTo(10);
     86     assertThat(traceParams.getMaxNumberOfLinks()).isEqualTo(11);
     87   }
     88 
     89   @Test
     90   public void updateTraceParams_maxNumberOfNetworkEvents() {
     91     TraceParams traceParams =
     92         TraceParams.DEFAULT.toBuilder().setMaxNumberOfNetworkEvents(10).build();
     93     assertThat(traceParams.getMaxNumberOfNetworkEvents()).isEqualTo(10);
     94     // test maxNumberOfMessageEvent can be set via maxNumberOfNetworkEvent
     95     assertThat(traceParams.getMaxNumberOfMessageEvents()).isEqualTo(10);
     96   }
     97 }
     98