Function TEST

cpp/src/arrow/util/tdigest_test.cc:41–51

namespace internal {

TEST(TDigestTest, SingleValue) {
  const double value = 0.12345678;

  TDigest td;
  td.Add(value);
  ASSERT_OK(td.Validate());
  // all quantiles equal to same single value
  for (double q = 0; q <= 1; q += 0.1) {
    EXPECT_EQ(td.Quantile(q), value);
  }
}

TEST(TDigestTest, FewValues) {
  // exact quantile at 0.1 interval, test sorted and unsorted input