File: test_logging_console_output_handler.cpp

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// Copyright 2020 Open Source Robotics Foundation, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include <gtest/gtest.h>

#include <string>
#include <vector>

#include "osrf_testing_tools_cpp/scope_exit.hpp"
#include "rcutils/logging.h"

static void call_handler(
  const rcutils_log_location_t * location,
  int severity, const char * name, rcutils_time_point_value_t timestamp,
  const char * format, ...)
{
  va_list args;
  va_start(args, format);
  rcutils_logging_console_output_handler(location, severity, name, timestamp, format, &args);
  va_end(args);
}

// There are no outputs of the handler function, and the only result are fprintf() calls.
// This is just a smoke test to check that the code can handle simple inputs cleanly.
TEST(TestLoggingConsoleOutputHandler, typical_inputs) {
  ASSERT_EQ(RCUTILS_RET_OK, rcutils_logging_initialize());
  OSRF_TESTING_TOOLS_CPP_SCOPE_EXIT(
  {
    EXPECT_EQ(RCUTILS_RET_OK, rcutils_logging_shutdown());
  });

  rcutils_log_location_t log_location = {
    "test_function",
    "test_file",
    1,
  };
  const char * log_name = "test_name";
  rcutils_time_point_value_t timestamp = 1;
  const char * format = "%s - %s";
  call_handler(
    &log_location, RCUTILS_LOG_SEVERITY_DEBUG, log_name, timestamp, format, "part1", "part2");
  call_handler(
    &log_location, RCUTILS_LOG_SEVERITY_INFO, log_name, timestamp, format, "part1", "part2");
  call_handler(
    &log_location, RCUTILS_LOG_SEVERITY_WARN, log_name, timestamp, format, "part1", "part2");
  call_handler(
    &log_location, RCUTILS_LOG_SEVERITY_ERROR, log_name, timestamp, format, "part1", "part2");
  call_handler(
    &log_location, RCUTILS_LOG_SEVERITY_FATAL, log_name, timestamp, format, "part1", "part2");
}

// There are no outputs of the handler function, and the only result are fprintf() calls.
// This is just a smoke test to check that the code can handle bad inputs cleanly.
TEST(TestLoggingConsoleOutputHandler, bad_inputs) {
  rcutils_log_location_t log_location = {
    "test_function",
    "test_file",
    1,
  };
  const char * log_name = "test_name";
  rcutils_time_point_value_t timestamp = 1;
  const char * format = "%s - %s";

  // Check !g_rcutils_logging_initialized
  call_handler(
    &log_location, RCUTILS_LOG_SEVERITY_DEBUG, log_name, timestamp, format, "part1", "part2");

  ASSERT_EQ(RCUTILS_RET_OK, rcutils_logging_initialize());
  OSRF_TESTING_TOOLS_CPP_SCOPE_EXIT(
  {
    EXPECT_EQ(RCUTILS_RET_OK, rcutils_logging_shutdown());
  });

  call_handler(
    nullptr, RCUTILS_LOG_SEVERITY_INFO, log_name, timestamp, format, "part1", "part2");
  call_handler(
    &log_location, RCUTILS_LOG_SEVERITY_UNSET, log_name, timestamp, format, "part1", "part2");
  call_handler(
    &log_location, RCUTILS_LOG_SEVERITY_INFO, nullptr, timestamp, format, "part1", "part2");
  call_handler(
    &log_location, RCUTILS_LOG_SEVERITY_INFO, log_name, 0, format, "part1", "part2");

  // If format is NULL, this call will segfault on some (but not all) systems
  call_handler(
    &log_location, RCUTILS_LOG_SEVERITY_INFO, log_name, timestamp, "bad format", "part1", "part2");
}