folly/experimental/logging/test/LogLevelTest.cpp

   1 /*
   2  * Copyright 2004-present Facebook, Inc.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *   http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 #include <folly/Conv.h>
  17 #include <folly/Random.h>
  18 #include <folly/experimental/logging/LogLevel.h>
  19 #include <folly/portability/GTest.h>
  20
  21 using namespace folly;
  22
  23 TEST(LogLevel, fromString) {
  24   EXPECT_EQ(LogLevel::UNINITIALIZED, stringToLogLevel("uninitialized"));
  25   EXPECT_EQ(LogLevel::UNINITIALIZED, stringToLogLevel("UnInitialized"));
  26   EXPECT_EQ(
  27       LogLevel::UNINITIALIZED, stringToLogLevel("LogLevel::UNINITIALIZED"));
  28
  29   EXPECT_EQ(LogLevel::NONE, stringToLogLevel("none"));
  30   EXPECT_EQ(LogLevel::NONE, stringToLogLevel("NONE"));
  31   EXPECT_EQ(LogLevel::NONE, stringToLogLevel("NoNe"));
  32   EXPECT_EQ(LogLevel::NONE, stringToLogLevel("LogLevel::none"));
  33
  34   EXPECT_EQ(LogLevel::DEBUG, stringToLogLevel("debug"));
  35   EXPECT_EQ(LogLevel::DEBUG, stringToLogLevel("dEBug"));
  36   EXPECT_EQ(LogLevel::DEBUG, stringToLogLevel("loglevel::dEBug"));
  37
  38   EXPECT_EQ(LogLevel::INFO, stringToLogLevel("info"));
  39   EXPECT_EQ(LogLevel::INFO, stringToLogLevel("INFO"));
  40   EXPECT_EQ(LogLevel::INFO, stringToLogLevel("loglevel(INFO)"));
  41
  42   EXPECT_EQ(LogLevel::WARN, stringToLogLevel("warn"));
  43   EXPECT_EQ(LogLevel::WARN, stringToLogLevel("WARN"));
  44   EXPECT_EQ(LogLevel::WARN, stringToLogLevel("warning"));
  45
  46   EXPECT_EQ(LogLevel::ERR, stringToLogLevel("err"));
  47   EXPECT_EQ(LogLevel::ERR, stringToLogLevel("eRr"));
  48   EXPECT_EQ(LogLevel::ERR, stringToLogLevel("error"));
  49   EXPECT_EQ(LogLevel::ERR, stringToLogLevel("ERROR"));
  50
  51   EXPECT_EQ(LogLevel::CRITICAL, stringToLogLevel("critical"));
  52   EXPECT_EQ(LogLevel::CRITICAL, stringToLogLevel("CRITICAL"));
  53
  54   EXPECT_EQ(LogLevel::MAX_LEVEL, stringToLogLevel("max"));
  55   EXPECT_EQ(LogLevel::MAX_LEVEL, stringToLogLevel("Max_Level"));
  56   EXPECT_EQ(LogLevel::MAX_LEVEL, stringToLogLevel("LogLevel::MAX"));
  57   EXPECT_EQ(LogLevel::MAX_LEVEL, stringToLogLevel("LogLevel::MAX_LEVEL"));
  58
  59   EXPECT_EQ(LogLevel::DBG0, stringToLogLevel("dbg0"));
  60   EXPECT_EQ(LogLevel::DBG5, stringToLogLevel("dbg5"));
  61   EXPECT_EQ(LogLevel::DBG5, stringToLogLevel("DBG5"));
  62   EXPECT_EQ(LogLevel::DBG9, stringToLogLevel("DBG9"));
  63   EXPECT_EQ(LogLevel::DEBUG + 1, stringToLogLevel("DBG99"));
  64   EXPECT_EQ(LogLevel::DEBUG, stringToLogLevel("900"));
  65   EXPECT_EQ(LogLevel::DEBUG, stringToLogLevel("LogLevel(900)"));
  66
  67   EXPECT_THROW(stringToLogLevel("foobar"), std::range_error);
  68   EXPECT_THROW(stringToLogLevel("dbg"), std::range_error);
  69   EXPECT_THROW(stringToLogLevel("dbgxyz"), std::range_error);
  70   EXPECT_THROW(stringToLogLevel("dbg-1"), std::range_error);
  71   EXPECT_THROW(stringToLogLevel("dbg12345"), std::range_error);
  72   EXPECT_THROW(stringToLogLevel("900z"), std::range_error);
  73 }
  74
  75 TEST(LogLevel, toString) {
  76   EXPECT_EQ(
  77       "LogLevel::UNINITIALIZED", logLevelToString(LogLevel::UNINITIALIZED));
  78   EXPECT_EQ("LogLevel::NONE", logLevelToString(LogLevel::NONE));
  79   EXPECT_EQ("LogLevel::INFO", logLevelToString(LogLevel::INFO));
  80   EXPECT_EQ("LogLevel::WARN", logLevelToString(LogLevel::WARN));
  81   EXPECT_EQ("LogLevel::WARN", logLevelToString(LogLevel::WARNING));
  82   EXPECT_EQ("LogLevel::DEBUG", logLevelToString(LogLevel::DEBUG));
  83   EXPECT_EQ("LogLevel::ERR", logLevelToString(LogLevel::ERR));
  84   EXPECT_EQ("LogLevel::CRITICAL", logLevelToString(LogLevel::CRITICAL));
  85   EXPECT_EQ("LogLevel::MAX_LEVEL", logLevelToString(LogLevel::MAX_LEVEL));
  86
  87   EXPECT_EQ("LogLevel::DBG0", logLevelToString(LogLevel::DBG0));
  88   EXPECT_EQ("LogLevel::DBG2", logLevelToString(LogLevel::DBG2));
  89   EXPECT_EQ("LogLevel::DBG5", logLevelToString(LogLevel::DBG5));
  90   EXPECT_EQ("LogLevel::DBG9", logLevelToString(LogLevel::DBG9));
  91   EXPECT_EQ("LogLevel::DBG97", logLevelToString(static_cast<LogLevel>(903)));
  92   EXPECT_EQ("LogLevel::DBG64", logLevelToString(LogLevel::DBG4 - 60));
  93
  94   EXPECT_EQ("LogLevel(1234)", logLevelToString(static_cast<LogLevel>(1234)));
  95 }
  96
  97 TEST(LogLevel, toStringAndBack) {
  98   // Check that stringToLogLevel(logLevelToString()) is the identity function
  99   auto checkLevel = [](LogLevel level) {
 100     auto stringForm = logLevelToString(level);
 101     auto outputLevel = stringToLogLevel(stringForm);
 102     EXPECT_EQ(level, outputLevel)
 103         << "error converting " << level << " (" << static_cast<uint32_t>(level)
 104         << ") to string and back.  String is " << stringForm;
 105   };
 106
 107   // Check all of the named levels
 108   checkLevel(LogLevel::UNINITIALIZED);
 109   checkLevel(LogLevel::NONE);
 110   checkLevel(LogLevel::DEBUG);
 111   checkLevel(LogLevel::DBG0);
 112   checkLevel(LogLevel::DBG1);
 113   checkLevel(LogLevel::DBG2);
 114   checkLevel(LogLevel::DBG3);
 115   checkLevel(LogLevel::DBG4);
 116   checkLevel(LogLevel::DBG5);
 117   checkLevel(LogLevel::DBG6);
 118   checkLevel(LogLevel::DBG7);
 119   checkLevel(LogLevel::DBG8);
 120   checkLevel(LogLevel::DBG9);
 121   checkLevel(LogLevel::INFO);
 122   checkLevel(LogLevel::WARN);
 123   checkLevel(LogLevel::WARNING);
 124   checkLevel(LogLevel::ERR);
 125   checkLevel(LogLevel::CRITICAL);
 126   checkLevel(LogLevel::MAX_LEVEL);
 127
 128   // Try with some random integer values
 129   for (uint32_t numIters = 0; numIters < 10000; ++numIters) {
 130     auto levelValue =
 131         folly::Random::rand32(static_cast<uint32_t>(LogLevel::MAX_LEVEL));
 132     checkLevel(static_cast<LogLevel>(levelValue));
 133   }
 134 }