// Ceres Solver - A fast non-linear least squares minimizer
// Copyright 2012 Google Inc. All rights reserved.
// http://code.google.com/p/ceres-solver/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
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//   this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
//   this list of conditions and the following disclaimer in the documentation
//   and/or other materials provided with the distribution.
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//
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// Author: sameeragarwal@google.com (Sameer Agarwal)

#include "ceres/array_utils.h"

#include <limits>
#include <cmath>
#include "gtest/gtest.h"

namespace ceres {
namespace internal {

TEST(ArrayUtils, IsArrayValid) {
  double x[3];
  x[0] = 0.0;
  x[1] = 1.0;
  x[2] = 2.0;
  EXPECT_TRUE(IsArrayValid(3, x));
  x[1] = std::numeric_limits<double>::infinity();
  EXPECT_FALSE(IsArrayValid(3, x));
  x[1] = std::numeric_limits<double>::quiet_NaN();
  EXPECT_FALSE(IsArrayValid(3, x));
  x[1] = std::numeric_limits<double>::signaling_NaN();
  EXPECT_FALSE(IsArrayValid(3, x));
  EXPECT_TRUE(IsArrayValid(1, NULL));
  InvalidateArray(3, x);
  EXPECT_FALSE(IsArrayValid(3, x));
}

}  // namespace internal
}  // namespace ceres