1 files changed, 112 insertions, 0 deletions
diff --git a/base/debug/stack_trace_unittest.cc b/base/debug/stack_trace_unittest.cc
new file mode 100644
index 0000000..e8e1e19
--- /dev/null
+++ b/base/debug/stack_trace_unittest.cc
@@ -0,0 +1,112 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include <sstream>
+#include <string>
+
+#include "base/debug/stack_trace.h"
+#include "base/logging.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace base {
+namespace debug {
+
+// Note: On Linux, this test currently only fully works on Debug builds.
+// See comments in the #ifdef soup if you intend to change this.
+// Flaky, crbug.com/32070.
+TEST(StackTrace, FLAKY_OutputToStream) {
+  StackTrace trace;
+
+  // Dump the trace into a string.
+  std::ostringstream os;
+  trace.OutputToStream(&os);
+  std::string backtrace_message = os.str();
+
+#if defined(OS_POSIX) && !defined(OS_MACOSX) && NDEBUG
+  // Stack traces require an extra data table that bloats our binaries,
+  // so they're turned off for release builds.  We stop the test here,
+  // at least letting us verify that the calls don't crash.
+  return;
+#endif  // defined(OS_POSIX) && !defined(OS_MACOSX) && NDEBUG
+
+  size_t frames_found = 0;
+  trace.Addresses(&frames_found);
+  ASSERT_GE(frames_found, 5u) <<
+      "No stack frames found.  Skipping rest of test.";
+
+  // Check if the output has symbol initialization warning.  If it does, fail.
+  ASSERT_EQ(backtrace_message.find("Dumping unresolved backtrace"),
+            std::string::npos) <<
+      "Unable to resolve symbols.  Skipping rest of test.";
+
+#if defined(OS_MACOSX)
+#if 0
+  // Disabled due to -fvisibility=hidden in build config.
+
+  // Symbol resolution via the backtrace_symbol function does not work well
+  // in OS X.
+  // See this thread:
+  //
+  //    http://lists.apple.com/archives/darwin-dev/2009/Mar/msg00111.html
+  //
+  // Just check instead that we find our way back to the "start" symbol
+  // which should be the first symbol in the trace.
+  //
+  // TODO(port): Find a more reliable way to resolve symbols.
+
+  // Expect to at least find main.
+  EXPECT_TRUE(backtrace_message.find("start") != std::string::npos)
+      << "Expected to find start in backtrace:\n"
+      << backtrace_message;
+
+#endif
+#elif defined(__GLIBCXX__)
+  // This branch is for gcc-compiled code, but not Mac due to the
+  // above #if.
+  // Expect a demangled symbol.
+  EXPECT_TRUE(backtrace_message.find("testing::Test::Run()") !=
+              std::string::npos)
+      << "Expected a demangled symbol in backtrace:\n"
+      << backtrace_message;
+
+#elif 0
+  // This is the fall-through case; it used to cover Windows.
+  // But it's disabled because of varying buildbot configs;
+  // some lack symbols.
+
+  // Expect to at least find main.
+  EXPECT_TRUE(backtrace_message.find("main") != std::string::npos)
+      << "Expected to find main in backtrace:\n"
+      << backtrace_message;
+
+#if defined(OS_WIN)
+// MSVC doesn't allow the use of C99's __func__ within C++, so we fake it with
+// MSVC's __FUNCTION__ macro.
+#define __func__ __FUNCTION__
+#endif
+
+  // Expect to find this function as well.
+  // Note: This will fail if not linked with -rdynamic (aka -export_dynamic)
+  EXPECT_TRUE(backtrace_message.find(__func__) != std::string::npos)
+      << "Expected to find " << __func__ << " in backtrace:\n"
+      << backtrace_message;
+
+#endif  // define(OS_MACOSX)
+}
+
+// The test is used for manual testing, e.g., to see the raw output.
+TEST(StackTrace, DebugOutputToStream) {
+  StackTrace trace;
+  std::ostringstream os;
+  trace.OutputToStream(&os);
+  VLOG(1) << os.str();
+}
+
+// The test is used for manual testing, e.g., to see the raw output.
+TEST(StackTrace, DebugPrintBacktrace) {
+  StackTrace().PrintBacktrace();
+}
+
+}  // namespace debug
+}  // namespace base