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// Copyright (C) 2011 The Libphonenumber Authors
//
// 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.
// Author: Philippe Liard
#include <string>
#include <gtest/gtest.h>
#include "phonenumbers/base/memory/scoped_ptr.h"
#include "phonenumbers/default_logger.h"
#include "phonenumbers/logger.h"
namespace i18n {
namespace phonenumbers {
// String logger implementation used for testing. Messages are output to a
// string for convenience.
class StringLogger : public Logger {
public:
virtual ~StringLogger() {}
const string& message() const {
return msg_;
}
virtual void WriteMessage(const string& msg) {
msg_ += msg;
}
private:
string msg_;
};
class LoggerTest : public ::testing::Test {
protected:
virtual void SetUp() {
test_logger_.reset(new StringLogger());
test_logger_->set_level(LOG_INFO);
// Save the current logger implementation and restore it when the test is
// done to avoid side-effects in other tests (including phonenumberutil
// tests) as the logger implementation is global.
old_logger_ = Logger::mutable_logger_impl();
Logger::set_logger_impl(test_logger_.get());
}
virtual void TearDown() {
// Restore the previous logger implementation to avoid side-effects in other
// tests as mentioned above.
Logger::set_logger_impl(old_logger_);
}
scoped_ptr<StringLogger> test_logger_;
Logger* old_logger_;
};
TEST_F(LoggerTest, LoggerIgnoresHigherVerbosity) {
// The logger verbosity is set to LOG_INFO, therefore LOG_DEBUG messages
// should be ignored.
LOG(LOG_DEBUG) << "Hello";
EXPECT_EQ("", test_logger_->message());
}
TEST_F(LoggerTest, LoggerOutputsNewline) {
LOG(LOG_INFO) << "Hello";
EXPECT_EQ("Hello\n", test_logger_->message());
}
TEST_F(LoggerTest, LoggerLogsEqualVerbosity) {
LOG(LOG_INFO) << "Hello";
EXPECT_EQ("Hello\n", test_logger_->message());
}
TEST_F(LoggerTest, LoggerLogsMoreSeriousMessages) {
// The logger verbosity is set to LOG_INFO, therefore LOG_WARNING messages
// should still be printed.
LOG(LOG_WARNING) << "Hello";
EXPECT_EQ("Hello\n", test_logger_->message());
}
TEST_F(LoggerTest, LoggerConcatenatesMessages) {
LOG(LOG_INFO) << "Hello";
ASSERT_EQ("Hello\n", test_logger_->message());
LOG(LOG_INFO) << " World";
EXPECT_EQ("Hello\n World\n", test_logger_->message());
}
TEST_F(LoggerTest, LoggerHandlesDifferentTypes) {
LOG(LOG_INFO) << "Hello " << 42;
EXPECT_EQ("Hello 42\n", test_logger_->message());
}
TEST_F(LoggerTest, LoggerIgnoresVerboseLogs) {
// VLOG is always lower verbosity than LOG, so with LOG_INFO set as the
// verbosity level, no VLOG call should result in anything.
VLOG(1) << "Hello";
EXPECT_EQ("", test_logger_->message());
// VLOG(0) is the same as LOG_DEBUG.
VLOG(0) << "Hello";
EXPECT_EQ("", test_logger_->message());
// With LOG_DEBUG as the current verbosity level, VLOG(1) should still not
// result in anything.
test_logger_->set_level(LOG_DEBUG);
VLOG(1) << "Hello";
EXPECT_EQ("", test_logger_->message());
// However, VLOG(0) does.
VLOG(0) << "Hello";
EXPECT_EQ("Hello\n", test_logger_->message());
}
TEST_F(LoggerTest, LoggerShowsDebugLogsAtDebugLevel) {
test_logger_->set_level(LOG_DEBUG);
// Debug logs should still be seen.
LOG(LOG_DEBUG) << "Debug hello";
EXPECT_EQ("Debug hello\n", test_logger_->message());
}
TEST_F(LoggerTest, LoggerOutputsDebugLogsWhenVerbositySet) {
// This should now output LOG_DEBUG.
int verbose_log_level = 2;
test_logger_->set_verbosity_level(verbose_log_level);
LOG(LOG_DEBUG) << "Debug hello";
EXPECT_EQ("Debug hello\n", test_logger_->message());
}
TEST_F(LoggerTest, LoggerOutputsErrorLogsWhenVerbositySet) {
// This should now output LOG_ERROR.
int verbose_log_level = 2;
test_logger_->set_verbosity_level(verbose_log_level);
LOG(ERROR) << "Error hello";
EXPECT_EQ("Error hello\n", test_logger_->message());
}
TEST_F(LoggerTest, LoggerOutputsLogsAccordingToVerbosity) {
int verbose_log_level = 2;
test_logger_->set_verbosity_level(verbose_log_level);
// More verbose than the current limit.
VLOG(verbose_log_level + 1) << "Hello 3";
EXPECT_EQ("", test_logger_->message());
// Less verbose than the current limit.
VLOG(verbose_log_level - 1) << "Hello";
EXPECT_EQ("Hello\n", test_logger_->message());
// At the current limit. This will be appended to the previous log output.
VLOG(verbose_log_level) << "Hello 2";
EXPECT_EQ("Hello\nHello 2\n", test_logger_->message());
}
} // namespace phonenumbers
} // namespace i18n
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