src/breakpad/src/client/linux/minidump_writer/linux_core_dumper_unittest.cc

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  29
  30 // linux_core_dumper_unittest.cc:
  31 // Unit tests for google_breakpad::LinuxCoreDumoer.
  32
  33 #include <string>
  34
  35 #include "breakpad_googletest_includes.h"
  36 #include "client/linux/minidump_writer/linux_core_dumper.h"
  37 #include "common/linux/tests/crash_generator.h"
  38 #include "common/using_std_string.h"
  39
  40 using namespace google_breakpad;
  41
  42 TEST(LinuxCoreDumperTest, BuildProcPath) {
  43   const pid_t pid = getpid();
  44   const char procfs_path[] = "/procfs_copy";
  45   LinuxCoreDumper dumper(getpid(), "core_file", procfs_path);
  46
  47   char maps_path[NAME_MAX] = "";
  48   char maps_path_expected[NAME_MAX];
  49   snprintf(maps_path_expected, sizeof(maps_path_expected),
  50            "%s/maps", procfs_path);
  51   EXPECT_TRUE(dumper.BuildProcPath(maps_path, pid, "maps"));
  52   EXPECT_STREQ(maps_path_expected, maps_path);
  53
  54   EXPECT_FALSE(dumper.BuildProcPath(NULL, pid, "maps"));
  55   EXPECT_FALSE(dumper.BuildProcPath(maps_path, pid, ""));
  56   EXPECT_FALSE(dumper.BuildProcPath(maps_path, pid, NULL));
  57
  58   char long_node[NAME_MAX];
  59   size_t long_node_len = NAME_MAX - strlen(procfs_path) - 1;
  60   memset(long_node, 'a', long_node_len);
  61   long_node[long_node_len] = '\0';
  62   EXPECT_FALSE(dumper.BuildProcPath(maps_path, pid, long_node));
  63 }
  64
  65 TEST(LinuxCoreDumperTest, VerifyDumpWithMultipleThreads) {
  66   CrashGenerator crash_generator;
  67   if (!crash_generator.HasDefaultCorePattern()) {
  68     fprintf(stderr, "LinuxCoreDumperTest.VerifyDumpWithMultipleThreads test "
  69             "is skipped due to non-default core pattern\n");
  70     return;
  71   }
  72
  73   const unsigned kNumOfThreads = 3;
  74   const unsigned kCrashThread = 1;
  75   const int kCrashSignal = SIGABRT;
  76   pid_t child_pid;
  77   ASSERT_TRUE(crash_generator.CreateChildCrash(kNumOfThreads, kCrashThread,
  78                                                kCrashSignal, &child_pid));
  79
  80   const string core_file = crash_generator.GetCoreFilePath();
  81   const string procfs_path = crash_generator.GetDirectoryOfProcFilesCopy();
  82
  83 #if defined(__ANDROID__)
  84   struct stat st;
  85   if (stat(core_file.c_str(), &st) != 0) {
  86     fprintf(stderr, "LinuxCoreDumperTest.VerifyDumpWithMultipleThreads test is "
  87             "skipped due to no core file being generated");
  88     return;
  89   }
  90 #endif
  91
  92   LinuxCoreDumper dumper(child_pid, core_file.c_str(), procfs_path.c_str());
  93
  94   EXPECT_TRUE(dumper.Init());
  95
  96   EXPECT_TRUE(dumper.IsPostMortem());
  97
  98   // These are no-ops and should always return true.
  99   EXPECT_TRUE(dumper.ThreadsSuspend());
 100   EXPECT_TRUE(dumper.ThreadsResume());
 101
 102   // LinuxCoreDumper cannot determine the crash address and thus it always
 103   // sets the crash address to 0.
 104   EXPECT_EQ(0U, dumper.crash_address());
 105   EXPECT_EQ(kCrashSignal, dumper.crash_signal());
 106   EXPECT_EQ(crash_generator.GetThreadId(kCrashThread),
 107             dumper.crash_thread());
 108
 109   EXPECT_EQ(kNumOfThreads, dumper.threads().size());
 110   for (unsigned i = 0; i < kNumOfThreads; ++i) {
 111     ThreadInfo info;
 112     EXPECT_TRUE(dumper.GetThreadInfoByIndex(i, &info));
 113     const void* stack;
 114     size_t stack_len;
 115     EXPECT_TRUE(dumper.GetStackInfo(&stack, &stack_len, info.stack_pointer));
 116     EXPECT_EQ(getpid(), info.ppid);
 117   }
 118 }