/*

 * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 *

 */

#include "precompiled.hpp"

#include "gc/shared/gcTraceTime.inline.hpp"

#include "logTestFixture.hpp"

#include "logTestUtils.inline.hpp"

#include "logging/log.hpp"

#include "unittest.hpp"

class LogTest : public LogTestFixture {

};

#define LOG_PREFIX_STR "THE_PREFIX "

#define LOG_LINE_STR "a log line"

size_t Test_log_prefix_prefixer(char* buf, size_t len) {

  int ret = jio_snprintf(buf, len, LOG_PREFIX_STR);

  assert(ret > 0, "Failed to print prefix. Log buffer too small?");

  return (size_t) ret;

}

#ifdef ASSERT // 'test' tag is debug only

TEST_VM_F(LogTest, prefix) {

  set_log_config(TestLogFileName, "logging+test=trace");

  log_trace(logging, test)(LOG_LINE_STR);

  EXPECT_TRUE(file_contains_substring(TestLogFileName, LOG_PREFIX_STR LOG_LINE_STR));

}

#endif

TEST_VM_F(LogTest, large_message) {

  char big_msg[4096] = {0};

  char Xchar = '~';

  set_log_config(TestLogFileName, "logging=trace");

  memset(big_msg, Xchar, sizeof(big_msg) - 1);

  log_trace(logging)("%s", big_msg);

  ResourceMark rm;

  FILE* fp = fopen(TestLogFileName, "r");

  ASSERT_NE((void*)NULL, fp);

  char* output = read_line(fp);

  fclose(fp);

  size_t count = 0;

  for (size_t ps = 0 ; output[ps + count] != '\0'; output[ps + count] == Xchar ? count++ : ps++);

  EXPECT_EQ(sizeof(big_msg) - 1, count);

}

TEST_VM_F(LogTest, enabled_logtarget) {

  set_log_config(TestLogFileName, "gc=debug");

  LogTarget(Debug, gc) log;

  EXPECT_TRUE(log.is_enabled());

  // Log the line and expect it to be available in the output file.

  log.print(LOG_TEST_STRING_LITERAL);

  EXPECT_TRUE(file_contains_substring(TestLogFileName, LOG_TEST_STRING_LITERAL));

}

TEST_VM_F(LogTest, disabled_logtarget) {

  set_log_config(TestLogFileName, "gc=info");

  LogTarget(Debug, gc) log;

  EXPECT_FALSE(log.is_enabled());

  // Try to log, but expect this to be filtered out.

  log.print(LOG_TEST_STRING_LITERAL);

  // Log a dummy line so that fgets doesn't return NULL because the file is empty.

  log_info(gc)("Dummy line");

  EXPECT_FALSE(file_contains_substring(TestLogFileName, LOG_TEST_STRING_LITERAL));

}

TEST_VM_F(LogTest, enabled_loghandle) {

  set_log_config(TestLogFileName, "gc=debug");

  Log(gc) log;

  LogHandle log_handle(log);

  EXPECT_TRUE(log_handle.is_debug());

  // Try to log through a LogHandle.

  log_handle.debug("%d workers", 3);

  EXPECT_TRUE(file_contains_substring(TestLogFileName, "3 workers"));

}

TEST_VM_F(LogTest, disabled_loghandle) {

  set_log_config(TestLogFileName, "gc=info");

  Log(gc) log;

  LogHandle log_handle(log);

  EXPECT_FALSE(log_handle.is_debug());

  // Try to log through a LogHandle.

  log_handle.debug("%d workers", 3);

  // Log a dummy line so that fgets doesn't return NULL because the file is empty.

  log_info(gc)("Dummy line");

  EXPECT_FALSE(file_contains_substring(TestLogFileName, "3 workers"));

}

TEST_VM_F(LogTest, enabled_logtargethandle) {

  set_log_config(TestLogFileName, "gc=debug");

  LogTarget(Debug, gc) log;

  LogTargetHandle log_handle(log);

  EXPECT_TRUE(log_handle.is_enabled());

  // Try to log through a LogHandle.

  log_handle.print("%d workers", 3);

  EXPECT_TRUE(file_contains_substring(TestLogFileName, "3 workers"));

}

TEST_VM_F(LogTest, disabled_logtargethandle) {

  set_log_config(TestLogFileName, "gc=info");

  LogTarget(Debug, gc) log;

  LogTargetHandle log_handle(log);

  EXPECT_FALSE(log_handle.is_enabled());

  // Try to log through a LogHandle.

  log_handle.print("%d workers", 3);

  // Log a dummy line so that fgets doesn't return NULL because the file is empty.

  log_info(gc)("Dummy line");

  EXPECT_FALSE(file_contains_substring(TestLogFileName, "3 workers"));

}