The Tor Browser: tools/profiler/tests/gtest/LulTest.cpp@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #include "gtest/gtest.h"

     7 #include "LulMain.h"

     8 #include "GeckoProfiler.h"     // for TracingMetadata

     9 #include "UnwinderThread2.h"   // for read_procmaps

    11 // Set this to 0 to make LUL be completely silent during tests.

    12 // Set it to 1 to get logging output from LUL, presumably for

    13 // the purpose of debugging it.

    14 #define DEBUG_LUL_TEST 0

    16 // LUL needs a callback for its logging sink.

    17 static void

    18 logging_sink_for_LUL(const char* str) {

    19   if (DEBUG_LUL_TEST == 0) {

    20     return;

    21   }

    22   // Ignore any trailing \n, since LOG will add one anyway.

    23   size_t n = strlen(str);

    24   if (n > 0 && str[n-1] == '\n') {

    25     char* tmp = strdup(str);

    26     tmp[n-1] = 0;

    27     fprintf(stderr, "LUL-in-gtest: %s\n", tmp);

    28     free(tmp);

    29   } else {

    30     fprintf(stderr, "LUL-in-gtest: %s\n", str);

    31   }

    32 }

    34 TEST(LUL, unwind_consistency) {

    35   // Set up LUL and get it to read unwind info for libxul.so, which is

    36   // all we care about here, plus (incidentally) practically every

    37   // other object in the process too.

    38   lul::LUL* lul = new lul::LUL(logging_sink_for_LUL);

    39   lul->RegisterUnwinderThread();

    40   read_procmaps(lul);

    42   // Run unwind tests and receive information about how many there

    43   // were and how many were successful.

    44   int nTests = 0, nTestsPassed = 0;

    45   RunLulUnitTests(&nTests, &nTestsPassed, lul);

    46   EXPECT_TRUE(nTests == 6) << "Unexpected number of tests";

    47   EXPECT_TRUE(nTestsPassed == nTests) << "Not all tests passed";

    49   delete lul;

    50 }

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