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.propagation; 18 19 import static com.google.common.truth.Truth.assertThat; 20 21 import io.opencensus.trace.SpanContext; 22 import java.text.ParseException; 23 import org.junit.Test; 24 import org.junit.runner.RunWith; 25 import org.junit.runners.JUnit4; 26 27 /** Unit tests for {@link BinaryFormat}. */ 28 @RunWith(JUnit4.class) 29 public class BinaryFormatTest { 30 private static final BinaryFormat binaryFormat = BinaryFormat.getNoopBinaryFormat(); 31 32 @Test(expected = NullPointerException.class) 33 public void toBinaryValue_NullSpanContext() { 34 binaryFormat.toBinaryValue(null); 35 } 36 37 @Test 38 public void toBinaryValue_NotNullSpanContext() { 39 assertThat(binaryFormat.toBinaryValue(SpanContext.INVALID)).isEqualTo(new byte[0]); 40 } 41 42 @Test(expected = NullPointerException.class) 43 public void toByteArray_NullSpanContext() { 44 binaryFormat.toByteArray(null); 45 } 46 47 @Test 48 public void toByteArray_NotNullSpanContext() { 49 assertThat(binaryFormat.toByteArray(SpanContext.INVALID)).isEqualTo(new byte[0]); 50 } 51 52 @Test(expected = NullPointerException.class) 53 public void fromBinaryValue_NullInput() throws ParseException { 54 binaryFormat.fromBinaryValue(null); 55 } 56 57 @Test 58 public void fromBinaryValue_NotNullInput() throws ParseException { 59 assertThat(binaryFormat.fromBinaryValue(new byte[0])).isEqualTo(SpanContext.INVALID); 60 } 61 62 @Test(expected = NullPointerException.class) 63 public void fromByteArray_NullInput() throws SpanContextParseException { 64 binaryFormat.fromByteArray(null); 65 } 66 67 @Test 68 public void fromByteArray_NotNullInput() throws SpanContextParseException { 69 assertThat(binaryFormat.fromByteArray(new byte[0])).isEqualTo(SpanContext.INVALID); 70 } 71 } 72