#include "core/model/ScalarVolumeI16.hpp"
#include <gtest/gtest.h>
using namespace geopro::core;

TEST(ScalarVolumeI16, QuantRoundTrip) {
  Quant q{0.5, -10.0};
  EXPECT_EQ(q.toQ(-10.0), 0);
  EXPECT_NEAR(q.toPhys(q.toQ(3.0)), 3.0, 0.25);     // 半个量化步内
}

TEST(ScalarVolumeI16, QuantClampReservesBlank) {
  Quant q{1.0, 0.0};
  EXPECT_GT(q.toQ(-1e9), ScalarVolumeI16::kBlank);  // 下钳不撞 kBlank
  EXPECT_EQ(q.toQ(1e9), 32767);                      // 上钳到 INT16_MAX
}

TEST(ScalarVolumeI16, IndexLayout) {
  ScalarVolumeI16 v(2, 2, 2);
  v.at(1, 0, 1) = 7;
  EXPECT_EQ(v.data()[(1 * 2 + 0) * 2 + 1], 7);       // ((k*ny+j)*nx+i)=((1*2+0)*2+1)=5
  EXPECT_EQ(v.at(1, 0, 1), 7);
}