Add markers to death test messages to make them more recogizable (by Jeff Shute).

src/gtest-death-test.cc

@@ -438,6 +438,24 @@ void DeathTestImpl::Abort(AbortReason reason) {
   _exit(1);  // Exits w/o any normal exit hooks (we were supposed to crash)
 }
 
+// Returns an indented copy of stderr output for a death test.
+// This makes distinguishing death test output lines from regular log lines
+// much easier.
+static ::std::string FormatDeathTestOutput(const ::std::string& output) {
+  ::std::string ret;
+  for (size_t at = 0; ; ) {
+    const size_t line_end = output.find('\n', at);
+    ret += "[  DEATH   ] ";
+    if (line_end == ::std::string::npos) {
+      ret += output.substr(at);
+      break;
+    }
+    ret += output.substr(at, line_end + 1 - at);
+    at = line_end + 1;
+  }
+  return ret;
+}
+
 // Assesses the success or failure of a death test, using both private
 // members which have previously been set, and one argument:
 //
@@ -473,15 +491,15 @@ bool DeathTestImpl::Passed(bool status_ok) {
   switch (outcome()) {
     case LIVED:
       buffer << "    Result: failed to die.\n"
-             << " Error msg: " << error_message;
+             << " Error msg:\n" << FormatDeathTestOutput(error_message);
       break;
     case THREW:
       buffer << "    Result: threw an exception.\n"
-             << " Error msg: " << error_message;
+             << " Error msg:\n" << FormatDeathTestOutput(error_message);
       break;
     case RETURNED:
       buffer << "    Result: illegal return in test statement.\n"
-             << " Error msg: " << error_message;
+             << " Error msg:\n" << FormatDeathTestOutput(error_message);
       break;
     case DIED:
       if (status_ok) {
@@ -491,11 +509,12 @@ bool DeathTestImpl::Passed(bool status_ok) {
         } else {
           buffer << "    Result: died but not with expected error.\n"
                  << "  Expected: " << regex()->pattern() << "\n"
-                 << "Actual msg: " << error_message;
+                 << "Actual msg:\n" << FormatDeathTestOutput(error_message);
         }
       } else {
         buffer << "    Result: died but not with expected exit code:\n"
-               << "            " << ExitSummary(status()) << "\n";
+               << "            " << ExitSummary(status()) << "\n"
+               << "Actual msg:\n" << FormatDeathTestOutput(error_message);
       }
       break;
     case IN_PROGRESS:

test/gtest-death-test_test.cc

@@ -103,9 +103,10 @@ class ReplaceDeathTestFactory {
 }  // namespace internal
 }  // namespace testing
 
-void DieInside(const char* function) {
+void DieWithMessage(const ::std::string& message) {
-  fprintf(stderr, "death inside %s().", function);
+  fprintf(stderr, "%s", message.c_str());
-  fflush(stderr);
+  fflush(stderr);  // Make sure the text is printed before the process exits.
+
   // We call _exit() instead of exit(), as the former is a direct
   // system call and thus safer in the presence of threads.  exit()
   // will invoke user-defined exit-hooks, which may do dangerous
@@ -118,6 +119,10 @@ void DieInside(const char* function) {
     _exit(1);
 }
 
+void DieInside(const ::std::string& function) {
+  DieWithMessage("death inside " + function + "().");
+}
+
 // Tests that death tests work.
 
 class TestForDeathTest : public testing::Test {
@@ -686,6 +691,57 @@ TEST_F(TestForDeathTest, InvalidStyle) {
   }, "This failure is expected.");
 }
 
+TEST_F(TestForDeathTest, DeathTestFailedOutput) {
+  testing::GTEST_FLAG(death_test_style) = "fast";
+  EXPECT_NONFATAL_FAILURE(
+      EXPECT_DEATH(DieWithMessage("death\n"),
+                   "expected message"),
+      "Actual msg:\n"
+      "[  DEATH   ] death\n");
+}
+
+TEST_F(TestForDeathTest, DeathTestUnexpectedReturnOutput) {
+  testing::GTEST_FLAG(death_test_style) = "fast";
+  EXPECT_NONFATAL_FAILURE(
+      EXPECT_DEATH({
+          fprintf(stderr, "returning\n");
+          fflush(stderr);
+          return;
+        }, ""),
+      "    Result: illegal return in test statement.\n"
+      " Error msg:\n"
+      "[  DEATH   ] returning\n");
+}
+
+TEST_F(TestForDeathTest, DeathTestBadExitCodeOutput) {
+  testing::GTEST_FLAG(death_test_style) = "fast";
+  EXPECT_NONFATAL_FAILURE(
+      EXPECT_EXIT(DieWithMessage("exiting with rc 1\n"),
+                  testing::ExitedWithCode(3),
+                  "expected message"),
+      "    Result: died but not with expected exit code:\n"
+      "            Exited with exit status 1\n"
+      "Actual msg:\n"
+      "[  DEATH   ] exiting with rc 1\n");
+}
+
+TEST_F(TestForDeathTest, DeathTestMultiLineMatchFail) {
+  testing::GTEST_FLAG(death_test_style) = "fast";
+  EXPECT_NONFATAL_FAILURE(
+      EXPECT_DEATH(DieWithMessage("line 1\nline 2\nline 3\n"),
+                   "line 1\nxyz\nline 3\n"),
+      "Actual msg:\n"
+      "[  DEATH   ] line 1\n"
+      "[  DEATH   ] line 2\n"
+      "[  DEATH   ] line 3\n");
+}
+
+TEST_F(TestForDeathTest, DeathTestMultiLineMatchPass) {
+  testing::GTEST_FLAG(death_test_style) = "fast";
+  EXPECT_DEATH(DieWithMessage("line 1\nline 2\nline 3\n"),
+               "line 1\nline 2\nline 3\n");
+}
+
 // A DeathTestFactory that returns MockDeathTests.
 class MockDeathTestFactory : public DeathTestFactory {
  public: