| /* |
| * Copyright 2017, OpenCensus Authors |
| * |
| * Licensed 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 io.opencensus.trace; |
| |
| import static com.google.common.truth.Truth.assertThat; |
| |
| import com.google.common.testing.EqualsTester; |
| import java.util.Arrays; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** Unit tests for {@link SpanId}. */ |
| @RunWith(JUnit4.class) |
| public class SpanIdTest { |
| private static final byte[] firstBytes = new byte[] {0, 0, 0, 0, 0, 0, 0, 'a'}; |
| private static final byte[] secondBytes = new byte[] {(byte) 0xFF, 0, 0, 0, 0, 0, 0, 'A'}; |
| private static final SpanId first = SpanId.fromBytes(firstBytes); |
| private static final SpanId second = SpanId.fromBytes(secondBytes); |
| |
| @Test |
| public void invalidSpanId() { |
| assertThat(SpanId.INVALID.getBytes()).isEqualTo(new byte[8]); |
| } |
| |
| @Test |
| public void isValid() { |
| assertThat(SpanId.INVALID.isValid()).isFalse(); |
| assertThat(first.isValid()).isTrue(); |
| assertThat(second.isValid()).isTrue(); |
| } |
| |
| @Test |
| public void fromLowerBase16() { |
| assertThat(SpanId.fromLowerBase16("0000000000000000")).isEqualTo(SpanId.INVALID); |
| assertThat(SpanId.fromLowerBase16("0000000000000061")).isEqualTo(first); |
| assertThat(SpanId.fromLowerBase16("ff00000000000041")).isEqualTo(second); |
| } |
| |
| @Test |
| public void toLowerBase16() { |
| assertThat(SpanId.INVALID.toLowerBase16()).isEqualTo("0000000000000000"); |
| assertThat(first.toLowerBase16()).isEqualTo("0000000000000061"); |
| assertThat(second.toLowerBase16()).isEqualTo("ff00000000000041"); |
| } |
| |
| @Test |
| public void getBytes() { |
| assertThat(first.getBytes()).isEqualTo(firstBytes); |
| assertThat(second.getBytes()).isEqualTo(secondBytes); |
| } |
| |
| @Test |
| public void traceId_CompareTo() { |
| assertThat(first.compareTo(second)).isGreaterThan(0); |
| assertThat(second.compareTo(first)).isLessThan(0); |
| assertThat(first.compareTo(SpanId.fromBytes(firstBytes))).isEqualTo(0); |
| } |
| |
| @Test |
| public void traceId_EqualsAndHashCode() { |
| EqualsTester tester = new EqualsTester(); |
| tester.addEqualityGroup(SpanId.INVALID, SpanId.INVALID); |
| tester.addEqualityGroup(first, SpanId.fromBytes(Arrays.copyOf(firstBytes, firstBytes.length))); |
| tester.addEqualityGroup( |
| second, SpanId.fromBytes(Arrays.copyOf(secondBytes, secondBytes.length))); |
| tester.testEquals(); |
| } |
| |
| @Test |
| public void traceId_ToString() { |
| assertThat(SpanId.INVALID.toString()).contains("0000000000000000"); |
| assertThat(first.toString()).contains("0000000000000061"); |
| assertThat(second.toString()).contains("ff00000000000041"); |
| } |
| } |