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#include "tensorflow/core/platform/logging.h"
#include <gtest/gtest.h>

namespace tensorflow {

TEST(Logging, Log) {
  LOG(INFO) << "Hello";
  LOG(INFO) << "Another log message";
  LOG(ERROR) << "Error message";
  VLOG(1) << "A VLOG message";
  VLOG(2) << "A higher VLOG message";
}

TEST(Logging, CheckChecks) {
  CHECK(true);
  CHECK(7 > 5);
  string a("abc");
  string b("xyz");
  CHECK_EQ(a, a);
  CHECK_NE(a, b);
  CHECK_EQ(3, 3);
  CHECK_NE(4, 3);
  CHECK_GT(4, 3);
  CHECK_GE(3, 3);
  CHECK_LT(2, 3);
  CHECK_LE(2, 3);

  DCHECK(true);
  DCHECK(7 > 5);
  DCHECK_EQ(a, a);
  DCHECK_NE(a, b);
  DCHECK_EQ(3, 3);
  DCHECK_NE(4, 3);
  DCHECK_GT(4, 3);
  DCHECK_GE(3, 3);
  DCHECK_LT(2, 3);
  DCHECK_LE(2, 3);
}

TEST(LoggingDeathTest, FailedChecks) {
  string a("abc");
  string b("xyz");
  const char* p_const = "hello there";
  const char* p_null_const = nullptr;
  char mybuf[10];
  char* p_non_const = mybuf;
  char* p_null = nullptr;
  CHECK_NOTNULL(p_const);
  CHECK_NOTNULL(p_non_const);

  ASSERT_DEATH(CHECK(false), "false");
  ASSERT_DEATH(CHECK(9 < 7), "9 < 7");
  ASSERT_DEATH(CHECK_EQ(a, b), "a == b");
  ASSERT_DEATH(CHECK_EQ(3, 4), "3 == 4");
  ASSERT_DEATH(CHECK_NE(3, 3), "3 != 3");
  ASSERT_DEATH(CHECK_GT(2, 3), "2 > 3");
  ASSERT_DEATH(CHECK_GE(2, 3), "2 >= 3");
  ASSERT_DEATH(CHECK_LT(3, 2), "3 < 2");
  ASSERT_DEATH(CHECK_LE(3, 2), "3 <= 2");
  ASSERT_DEATH(CHECK(false), "false");
  ASSERT_DEATH(printf("%s", CHECK_NOTNULL(p_null)), "Must be non NULL");
  ASSERT_DEATH(printf("%s", CHECK_NOTNULL(p_null_const)), "Must be non NULL");
#ifndef NDEBUG
  ASSERT_DEATH(DCHECK(9 < 7), "9 < 7");
  ASSERT_DEATH(DCHECK(9 < 7), "9 < 7");
  ASSERT_DEATH(DCHECK_EQ(a, b), "a == b");
  ASSERT_DEATH(DCHECK_EQ(3, 4), "3 == 4");
  ASSERT_DEATH(DCHECK_NE(3, 3), "3 != 3");
  ASSERT_DEATH(DCHECK_GT(2, 3), "2 > 3");
  ASSERT_DEATH(DCHECK_GE(2, 3), "2 >= 3");
  ASSERT_DEATH(DCHECK_LT(3, 2), "3 < 2");
  ASSERT_DEATH(DCHECK_LE(3, 2), "3 <= 2");
#endif
}

}  // namespace tensorflow