| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * 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 com.android.compatibility.common.util; |
| |
| /** |
| * Helper methods for dealing with stack traces |
| */ |
| public class Stacktrace { |
| |
| private static final int SAFETY_DEPTH = 4; |
| private static final String TEST_POSTFIX = "Test"; |
| |
| private Stacktrace() {} |
| |
| /** |
| * @return classname#methodname from call stack of the current thread |
| */ |
| public static String getTestCallerClassMethodName() { |
| return getTestCallerClassMethodName(false /*includeLineNumber*/); |
| } |
| |
| /** |
| * @return classname#methodname from call stack of the current thread |
| */ |
| public static String getTestCallerClassMethodNameLineNumber() { |
| return getTestCallerClassMethodName(true /*includeLineNumber*/); |
| } |
| |
| /** |
| * @return classname#methodname from call stack of the current thread |
| */ |
| private static String getTestCallerClassMethodName(boolean includeLineNumber) { |
| StackTraceElement[] elements = Thread.currentThread().getStackTrace(); |
| // Look for the first class name in the elements array that ends with Test |
| for (int i = 0; i < elements.length; i++) { |
| if (elements[i].getClassName().endsWith(TEST_POSTFIX)) { |
| return buildClassMethodName(elements, i, includeLineNumber); |
| } |
| } |
| |
| // Use a reasonable default if the test name isn't found |
| return buildClassMethodName(elements, SAFETY_DEPTH, includeLineNumber); |
| } |
| |
| private static String buildClassMethodName( |
| StackTraceElement[] elements, int depth, boolean includeLineNumber) { |
| depth = Math.min(depth, elements.length - 1); |
| StringBuilder builder = new StringBuilder(); |
| builder.append(elements[depth].getClassName()).append("#") |
| .append(elements[depth].getMethodName()); |
| if (includeLineNumber) { |
| builder.append(":").append(elements[depth].getLineNumber()); |
| } |
| return builder.toString(); |
| } |
| } |