unit_tests: add logging unit test

tests/unit_tests/CMakeLists.txt

@@ -54,6 +54,7 @@ set(unit_tests_sources
   hashchain.cpp
   http.cpp
   keccak.cpp
+  logging.cpp
   main.cpp
   memwipe.cpp
   mlocker.cpp

tests/unit_tests/logging.cpp

@@ -0,0 +1,177 @@
+// Copyright (c) 2016-2018, The Monero Project
+// 
+// All rights reserved.
+// 
+// Redistribution and use in source and binary forms, with or without modification, are
+// permitted provided that the following conditions are met:
+// 
+// 1. Redistributions of source code must retain the above copyright notice, this list of
+//    conditions and the following disclaimer.
+// 
+// 2. Redistributions in binary form must reproduce the above copyright notice, this list
+//    of conditions and the following disclaimer in the documentation and/or other
+//    materials provided with the distribution.
+// 
+// 3. Neither the name of the copyright holder nor the names of its contributors may be
+//    used to endorse or promote products derived from this software without specific
+//    prior written permission.
+// 
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
+
+#include <boost/filesystem.hpp>
+#include "gtest/gtest.h"
+#include "file_io_utils.h"
+#include "misc_log_ex.h"
+
+static std::string log_filename;
+
+static void init()
+{
+  boost::filesystem::path p = boost::filesystem::temp_directory_path() / boost::filesystem::unique_path();
+  log_filename = p.string();
+  mlog_configure(log_filename, false, 0);
+}
+
+static void cleanup()
+{
+  boost::filesystem::remove(log_filename);
+}
+
+static size_t nlines(const std::string &str)
+{
+  size_t n = 0;
+  for (const char *ptr = str.c_str(); *ptr; ++ptr)
+    if (*ptr == '\n')
+      ++n;
+  return n;
+}
+
+static bool load_log_to_string(const std::string &filename, std::string &str)
+{
+  if (!epee::file_io_utils::load_file_to_string(filename, str))
+    return false;
+  for (const char *ptr = str.c_str(); *ptr; ++ptr)
+  {
+    if (*ptr == '\n')
+    {
+      std::string prefix = std::string(str.c_str(), ptr - str.c_str());
+      if (prefix.find("New log categories:") != std::string::npos)
+      {
+        str = std::string(ptr + 1, strlen(ptr + 1));
+        break;
+      }
+    }
+  }
+  return true;
+}
+
+static void log()
+{
+  MFATAL("fatal");
+  MERROR("error");
+  MWARNING("warning");
+  MINFO("info");
+  MDEBUG("debug");
+  MTRACE("trace");
+
+  MCINFO("a.b.c.d", "a.b.c.d");
+  MCINFO("a.b.c.e", "a.b.c.e");
+  MCINFO("global", "global");
+  MCINFO("x.y.z", "x.y.z");
+  MCINFO("y.y.z", "y.y.z");
+  MCINFO("x.y.x", "x.y.x");
+}
+
+TEST(logging, no_logs)
+{
+  init();
+  mlog_set_categories("");
+  log();
+  std::string str;
+  ASSERT_TRUE(load_log_to_string(log_filename, str));
+  ASSERT_TRUE(str == "");
+  cleanup();
+}
+
+TEST(logging, default)
+{
+  init();
+  log();
+  std::string str;
+  ASSERT_TRUE(load_log_to_string(log_filename, str));
+  ASSERT_TRUE(str.find("global") != std::string::npos);
+  ASSERT_TRUE(str.find("fatal") != std::string::npos);
+  ASSERT_TRUE(str.find("error") != std::string::npos);
+  ASSERT_TRUE(str.find("debug") == std::string::npos);
+  ASSERT_TRUE(str.find("trace") == std::string::npos);
+  cleanup();
+}
+
+TEST(logging, all)
+{
+  init();
+  mlog_set_categories("*:TRACE");
+  log();
+  std::string str;
+  ASSERT_TRUE(load_log_to_string(log_filename, str));
+  ASSERT_TRUE(str.find("global") != std::string::npos);
+  ASSERT_TRUE(str.find("fatal") != std::string::npos);
+  ASSERT_TRUE(str.find("error") != std::string::npos);
+  ASSERT_TRUE(str.find("debug") != std::string::npos);
+  ASSERT_TRUE(str.find("trace") != std::string::npos);
+  cleanup();
+}
+
+TEST(logging, glob_suffix)
+{
+  init();
+  mlog_set_categories("x.y*:TRACE");
+  log();
+  std::string str;
+  ASSERT_TRUE(load_log_to_string(log_filename, str));
+  ASSERT_TRUE(str.find("global") == std::string::npos);
+  ASSERT_TRUE(str.find("x.y.z") != std::string::npos);
+  ASSERT_TRUE(str.find("x.y.x") != std::string::npos);
+  ASSERT_TRUE(str.find("y.y.z") == std::string::npos);
+  cleanup();
+}
+
+TEST(logging, glob_prefix)
+{
+  init();
+  mlog_set_categories("*y.z:TRACE");
+  log();
+  std::string str;
+  ASSERT_TRUE(load_log_to_string(log_filename, str));
+  ASSERT_TRUE(str.find("global") == std::string::npos);
+  ASSERT_TRUE(str.find("x.y.z") != std::string::npos);
+  ASSERT_TRUE(str.find("x.y.x") == std::string::npos);
+  ASSERT_TRUE(str.find("y.y.z") != std::string::npos);
+  cleanup();
+}
+
+TEST(logging, last_precedence)
+{
+  init();
+  mlog_set_categories("gobal:FATAL,glo*:DEBUG");
+  log();
+  std::string str;
+  ASSERT_TRUE(load_log_to_string(log_filename, str));
+  ASSERT_TRUE(nlines(str) == 1);
+  ASSERT_TRUE(str.find("global") != std::string::npos);
+  ASSERT_TRUE(str.find("x.y.z") == std::string::npos);
+  ASSERT_TRUE(str.find("x.y.x") == std::string::npos);
+  ASSERT_TRUE(str.find("y.y.z") == std::string::npos);
+  cleanup();
+}
+