Add tests for hash utils

cpp/src/gandiva/CMakeLists.txt

@@ -228,6 +228,7 @@ add_gandiva_test(internals-test
                  like_holder_test.cc
                  decimal_type_util_test.cc
                  random_generator_holder_test.cc
+                 hash_utils_test.cc
                  gdv_function_stubs_test.cc
                  EXTRA_DEPENDENCIES
                  LLVM::LLVM_INTERFACE

cpp/src/gandiva/hash_utils_test.cc

@@ -0,0 +1,173 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+#include <gtest/gtest.h>
+#include <unordered_set>
+
+#include "gandiva/hash_utils.h"
+#include "gandiva/execution_context.h"
+
+using namespace gandiva;
+
+TEST(TestShaHashUtils, TestSha1Numeric) {
+  gandiva::ExecutionContext ctx;
+
+  auto ctx_ptr = reinterpret_cast<int64_t>(&ctx);
+
+  std::vector<double> values_to_be_hashed;
+
+  // Generate a list of values to obtains the SHA1 hash
+  values_to_be_hashed.push_back(gdv_double_to_long(0.0));
+  values_to_be_hashed.push_back(gdv_double_to_long(0.1));
+  values_to_be_hashed.push_back(gdv_double_to_long(0.2));
+  values_to_be_hashed.push_back(gdv_double_to_long(-0.10000001));
+  values_to_be_hashed.push_back(gdv_double_to_long(-0.0000001));
+  values_to_be_hashed.push_back(gdv_double_to_long(1.000000));
+  values_to_be_hashed.push_back(gdv_double_to_long(-0.0000002));
+  values_to_be_hashed.push_back(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 = gdv_hash_using_sha1(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 can not 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, TestSha256Numeric) {
+  gandiva::ExecutionContext ctx;
+
+  auto ctx_ptr = reinterpret_cast<int64_t>(&ctx);
+
+  std::vector<double> values_to_be_hashed;
+
+  // Generate a list of values to obtains the SHA1 hash
+  values_to_be_hashed.push_back(gdv_double_to_long(0.0));
+  values_to_be_hashed.push_back(gdv_double_to_long(0.1));
+  values_to_be_hashed.push_back(gdv_double_to_long(0.2));
+  values_to_be_hashed.push_back(gdv_double_to_long(-0.10000001));
+  values_to_be_hashed.push_back(gdv_double_to_long(-0.0000001));
+  values_to_be_hashed.push_back(gdv_double_to_long(1.000000));
+  values_to_be_hashed.push_back(gdv_double_to_long(-0.0000002));
+  values_to_be_hashed.push_back(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 sha256_size = 64;
+
+  for(auto value : values_to_be_hashed){
+    int out_length;
+    const char *sha_256 = gdv_hash_using_sha256(ctx_ptr, &value, sizeof(value),
+                                                &out_length);
+    std::string sha256_as_str(sha_256, out_length);
+    EXPECT_EQ(sha256_as_str.size(), sha256_size);
+
+    // The value can not exists inside the set with the hash results
+    EXPECT_EQ(sha_values.find(sha256_as_str), sha_values.end());
+    sha_values.insert(sha256_as_str);
+  }
+}
+
+TEST(TestShaHashUtils, TestSha1Varlen) {
+  gandiva::ExecutionContext ctx;
+
+  auto ctx_ptr = reinterpret_cast<int64_t>(&ctx);
+
+  std::string first_string = "ði ıntəˈnæʃənəl fəˈnɛtık əsoʊsiˈeıʃn\nY [ˈʏpsilɔn], "
+                             "Yen [jɛn], Yoga [ˈjoːgɑ]";
+
+
+  std::string second_string = "ði ıntəˈnæʃənəl fəˈnɛtık əsoʊsiˈeın\nY [ˈʏpsilɔn], "
+                              "Yen [jɛn], Yoga [ˈjoːgɑ] コンニチハ";
+
+  // The strings expected hashes are obtained from shell executing the following command:
+  // echo -n <output-string> | openssl dgst sha1
+  std::string expected_first_result = "160fcdbc2fa694d884868f5fae7a4bae82706185";
+  std::string expected_second_result = "a456b3e0f88669d2482170a42fade226a815bee1";
+
+
+  // Generate the hashes and compare with expected outputs
+  const int sha1_size = 40;
+  int out_length;
+
+  const char *sha_1 = gdv_hash_using_sha1(ctx_ptr,
+                                          first_string.c_str(),
+                                          first_string.size(),
+                                          &out_length);
+  std::string sha1_as_str(sha_1, out_length);
+  EXPECT_EQ(sha1_as_str.size(), sha1_size);
+  EXPECT_EQ(sha1_as_str, expected_first_result);
+
+  const char *sha_2 = gdv_hash_using_sha1(ctx_ptr,
+                                          second_string.c_str(),
+                                          second_string.size(),
+                                          &out_length);
+  std::string sha2_as_str(sha_2, out_length);
+  EXPECT_EQ(sha2_as_str.size(), sha1_size);
+  EXPECT_EQ(sha2_as_str, expected_second_result);
+}
+
+TEST(TestShaHashUtils, TestSha256Varlen) {
+  gandiva::ExecutionContext ctx;
+
+  auto ctx_ptr = reinterpret_cast<int64_t>(&ctx);
+
+  std::string first_string = "ði ıntəˈnæʃənəl fəˈnɛtık əsoʊsiˈeıʃn\nY [ˈʏpsilɔn], "
+                             "Yen [jɛn], Yoga [ˈjoːgɑ]";
+
+
+  std::string second_string = "ði ıntəˈnæʃənəl fəˈnɛtık əsoʊsiˈeın\nY [ˈʏpsilɔn], "
+                              "Yen [jɛn], Yoga [ˈjoːgɑ] コンニチハ";
+
+  // The strings expected hashes are obtained from shell executing the following command:
+  // echo -n <output-string> | openssl dgst sha1
+  std::string expected_first_result =
+      "55aeb2e789871dbd289edae94d4c1c82a1c25ca0bcd5a873924da2fefdd57acb";
+  std::string expected_second_result =
+      "86b29c13d0d0e26ea8f85bfa649dc9b8622ae59a4da2409d7d9b463e86e796f2";
+
+  // Generate the hashes and compare with expected outputs
+  const int sha256_size = 64;
+  int out_length;
+
+  const char *sha_1 = gdv_hash_using_sha256(ctx_ptr,
+                                          first_string.c_str(),
+                                          first_string.size(),
+                                          &out_length);
+  std::string sha1_as_str(sha_1, out_length);
+  EXPECT_EQ(sha1_as_str.size(), sha256_size);
+  EXPECT_EQ(sha1_as_str, expected_first_result);
+
+  const char *sha_2 = gdv_hash_using_sha256(ctx_ptr,
+                                          second_string.c_str(),
+                                          second_string.size(),
+                                          &out_length);
+  std::string sha2_as_str(sha_2, out_length);
+  EXPECT_EQ(sha2_as_str.size(), sha256_size);
+  EXPECT_EQ(sha2_as_str, expected_second_result);
+}