1 // Copyright (c) 2006-2009 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include <sstream> 6 #include <string> 7 8 #include "base/debug_util.h" 9 #include "base/logging.h" 10 #include "testing/gtest/include/gtest/gtest.h" 11 12 // Note: On Linux, this test currently only fully works on Debug builds. 13 // See comments in the #ifdef soup if you intend to change this. 14 // TODO(jar): BUG: 32070: Test is disabled... should be enabled. 15 TEST(StackTrace, DISABLED_OutputToStream) { 16 StackTrace trace; 17 18 // Dump the trace into a string. 19 std::ostringstream os; 20 trace.OutputToStream(&os); 21 std::string backtrace_message = os.str(); 22 23 #if defined(OS_POSIX) && !defined(OS_MACOSX) && NDEBUG 24 // Stack traces require an extra data table that bloats our binaries, 25 // so they're turned off for release builds. We stop the test here, 26 // at least letting us verify that the calls don't crash. 27 return; 28 #endif // defined(OS_POSIX) && !defined(OS_MACOSX) && NDEBUG 29 30 size_t frames_found = 0; 31 trace.Addresses(&frames_found); 32 ASSERT_GE(frames_found, 5u) << 33 "No stack frames found. Skipping rest of test."; 34 35 // Check if the output has symbol initialization warning. If it does, fail. 36 ASSERT_EQ(backtrace_message.find("Dumping unresolved backtrace"), 37 std::string::npos) << 38 "Unable to resolve symbols. Skipping rest of test."; 39 40 #if defined(OS_MACOSX) 41 #if 0 42 // Disabled due to -fvisibility=hidden in build config. 43 44 // Symbol resolution via the backtrace_symbol function does not work well 45 // in OS X. 46 // See this thread: 47 // 48 // http://lists.apple.com/archives/darwin-dev/2009/Mar/msg00111.html 49 // 50 // Just check instead that we find our way back to the "start" symbol 51 // which should be the first symbol in the trace. 52 // 53 // TODO(port): Find a more reliable way to resolve symbols. 54 55 // Expect to at least find main. 56 EXPECT_TRUE(backtrace_message.find("start") != std::string::npos) 57 << "Expected to find start in backtrace:\n" 58 << backtrace_message; 59 60 #endif 61 #elif defined(__GLIBCXX__) 62 // This branch is for gcc-compiled code, but not Mac due to the 63 // above #if. 64 // Expect a demangled symbol. 65 EXPECT_TRUE(backtrace_message.find("testing::Test::Run()") != 66 std::string::npos) 67 << "Expected a demangled symbol in backtrace:\n" 68 << backtrace_message; 69 70 #elif 0 71 // This is the fall-through case; it used to cover Windows. 72 // But it's disabled because of varying buildbot configs; 73 // some lack symbols. 74 75 // Expect to at least find main. 76 EXPECT_TRUE(backtrace_message.find("main") != std::string::npos) 77 << "Expected to find main in backtrace:\n" 78 << backtrace_message; 79 80 #if defined(OS_WIN) 81 // MSVC doesn't allow the use of C99's __func__ within C++, so we fake it with 82 // MSVC's __FUNCTION__ macro. 83 #define __func__ __FUNCTION__ 84 #endif 85 86 // Expect to find this function as well. 87 // Note: This will fail if not linked with -rdynamic (aka -export_dynamic) 88 EXPECT_TRUE(backtrace_message.find(__func__) != std::string::npos) 89 << "Expected to find " << __func__ << " in backtrace:\n" 90 << backtrace_message; 91 92 #endif // define(OS_MACOSX) 93 } 94 95 // The test is used for manual testing (i.e. see the raw output). 96 // To run the test use the flags: 97 // --gtest_filter='*DebugOutputToStream' --gtest_also_run_disabled_tests 98 TEST(StackTrace, DISABLED_DebugOutputToStream) { 99 StackTrace trace; 100 std::ostringstream os; 101 trace.OutputToStream(&os); 102 LOG(INFO) << os.str(); 103 } 104 105 // The test is used for manual testing. See the comment above. 106 TEST(StackTrace, DISABLED_DebugPrintBacktrace) { 107 StackTrace().PrintBacktrace(); 108 } 109
