1 /* 2 * Copyright 2018 The gRPC 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.grpc; 18 19 import static com.google.common.truth.Truth.assertThat; 20 21 import org.junit.Test; 22 import org.junit.runner.RunWith; 23 import org.junit.runners.JUnit4; 24 25 /** 26 * Tests for {@link StatusException}. 27 */ 28 @RunWith(JUnit4.class) 29 public class StatusExceptionTest { 30 31 @Test internalCtorRemovesStack()32 public void internalCtorRemovesStack() { 33 StackTraceElement[] trace = 34 new StatusException(Status.CANCELLED, null, false) {}.getStackTrace(); 35 36 assertThat(trace).isEmpty(); 37 } 38 39 @Test normalCtorKeepsStack()40 public void normalCtorKeepsStack() { 41 StackTraceElement[] trace = 42 new StatusException(Status.CANCELLED, null) {}.getStackTrace(); 43 44 assertThat(trace).isNotEmpty(); 45 } 46 47 @Test extendPreservesStack()48 public void extendPreservesStack() { 49 StackTraceElement[] trace = new StatusException(Status.CANCELLED) {}.getStackTrace(); 50 51 assertThat(trace).isNotEmpty(); 52 } 53 54 @Test extendAndOverridePreservesStack()55 public void extendAndOverridePreservesStack() { 56 final StackTraceElement element = new StackTraceElement("a", "b", "c", 4); 57 StatusException exception = new StatusException(Status.CANCELLED, new Metadata()) { 58 59 @Override 60 public synchronized Throwable fillInStackTrace() { 61 setStackTrace(new StackTraceElement[]{element}); 62 return this; 63 } 64 }; 65 assertThat(exception.getStackTrace()).asList().containsExactly(element); 66 } 67 } 68