Function TEST

cpp/src/gandiva/hash_utils_test.cc:24–57

#include "gandiva/hash_utils.h"

TEST(TestShaHashUtils, TestSha1Numeric) {
  gandiva::ExecutionContext ctx;

  auto ctx_ptr = reinterpret_cast<int64_t>(&ctx);

  std::vector<uint64_t> values_to_be_hashed;

  // Generate a list of values to obtains the SHA1 hash
  values_to_be_hashed.push_back(gandiva::gdv_double_to_long(0.0));
  values_to_be_hashed.push_back(gandiva::gdv_double_to_long(0.1));
  values_to_be_hashed.push_back(gandiva::gdv_double_to_long(0.2));
  values_to_be_hashed.push_back(gandiva::gdv_double_to_long(-0.10000001));
  values_to_be_hashed.push_back(gandiva::gdv_double_to_long(-0.0000001));
  values_to_be_hashed.push_back(gandiva::gdv_double_to_long(1.000000));
  values_to_be_hashed.push_back(gandiva::gdv_double_to_long(-0.0000002));
  values_to_be_hashed.push_back(gandiva::gdv_double_to_long(0.999999));

  // Checks if the hash value is different for each one of the values
  std::unordered_set<std::string> sha_values;

  int sha1_size = 40;

  for (auto value : values_to_be_hashed) {
    int out_length;
    const char* sha_1 =
        gandiva::gdv_sha1_hash(ctx_ptr, &value, sizeof(value), &out_length);
    std::string sha1_as_str(sha_1, out_length);
    EXPECT_EQ(sha1_as_str.size(), sha1_size);

    // The value cannot exists inside the set with the hash results
    EXPECT_EQ(sha_values.find(sha1_as_str), sha_values.end());
    sha_values.insert(sha1_as_str);
  }
}

TEST(TestShaHashUtils, TestSha512Numeric) {
  gandiva::ExecutionContext ctx;