// Copyright by Contributors
#include <xgboost/metric.h>

#include "../helpers.h"

TEST(Metric, MultiClassError) {
  xgboost::Metric * metric = xgboost::Metric::Create("merror");
  ASSERT_STREQ(metric->Name(), "merror");
  EXPECT_ANY_THROW(GetMetricEval(metric, {0}, {0, 0}));
  EXPECT_NEAR(GetMetricEval(
    metric, {1, 0, 0, 0, 1, 0, 0, 0, 1}, {0, 1, 2}), 0, 1e-10);
  EXPECT_NEAR(GetMetricEval(metric,
                            {0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1},
                            {0, 1, 2}),
              0.666, 0.001);
}

TEST(Metric, MultiClassLogLoss) {
  xgboost::Metric * metric = xgboost::Metric::Create("mlogloss");
  ASSERT_STREQ(metric->Name(), "mlogloss");
  EXPECT_ANY_THROW(GetMetricEval(metric, {0}, {0, 0}));
  EXPECT_NEAR(GetMetricEval(
    metric, {1, 0, 0, 0, 1, 0, 0, 0, 1}, {0, 1, 2}), 0, 1e-10);
  EXPECT_NEAR(GetMetricEval(metric,
                            {0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1, 0.1},
                            {0, 1, 2}),
              2.302, 0.001);
}