git subrepo clone --branch=20.41.6 git@github.com:ETLCPP/etl.git components/etl

subrepo:
  subdir:   "components/etl"
  merged:   "be5537ec"
upstream:
  origin:   "git@github.com:ETLCPP/etl.git"
  branch:   "20.41.6"
  commit:   "be5537ec"
git-subrepo:
  version:  "0.4.9"
  origin:   "???"
  commit:   "???"

components/etl/test/test_jenkins.cpp

@@ -0,0 +1,160 @@
+/******************************************************************************
+The MIT License(MIT)
+
+Embedded Template Library.
+https://github.com/ETLCPP/etl
+https://www.etlcpp.com
+
+Copyright(c) 2014 John Wellbelove
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files(the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions :
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+******************************************************************************/
+
+#include "unit_test_framework.h"
+
+#include <iterator>
+#include <string>
+#include <vector>
+#include <stdint.h>
+
+#include "etl/jenkins.h"
+
+template <typename TIterator>
+uint32_t jenkins(TIterator begin, TIterator end)
+{
+  uint32_t hash = 0;
+
+  while (begin != end)
+  {
+    hash += *begin++;
+    hash += (hash << 10U);
+    hash ^= (hash >> 6U);
+  }
+
+  hash += (hash << 3U);
+  hash ^= (hash >> 11U);
+  hash += (hash << 15U);
+
+  return hash;
+}
+
+namespace
+{
+  SUITE(test_jenkins)
+  {
+    //*************************************************************************
+    TEST(test_jenkins_constructor)
+    {
+      std::string data("123456789");
+
+      uint32_t hash    = etl::jenkins(data.begin(), data.end());
+      uint32_t compare = jenkins(data.begin(), data.end());
+
+      CHECK_EQUAL(compare, hash);
+    }
+
+    //*************************************************************************
+    TEST(test_jenkins_add_values)
+    {
+      std::string data("123456789");
+
+      etl::jenkins jenkins_calculator;
+
+      for (size_t i = 0UL; i < data.size(); ++i)
+      {
+        jenkins_calculator.add(data[i]);
+      }
+
+      uint32_t hash    = jenkins_calculator;
+      uint32_t compare = jenkins(data.begin(), data.end());
+
+      CHECK_EQUAL(compare, hash);
+    }
+
+    //*************************************************************************
+    TEST(test_jenkins_add_range)
+    {
+      std::string data("123456789");
+
+      etl::jenkins jenkins_calculator;
+
+      jenkins_calculator.add(data.begin(), data.end());
+
+      uint32_t hash = jenkins_calculator.value();
+
+      uint32_t compare = jenkins(data.begin(), data.end());
+
+      CHECK_EQUAL(compare, hash);
+    }
+
+    //*************************************************************************
+    TEST(test_jenkins_add_range_via_iterator)
+    {
+      std::string data("123456789");
+
+      etl::jenkins jenkins_calculator;
+
+      std::copy(data.begin(), data.end(), jenkins_calculator.input());
+
+      uint32_t hash = jenkins_calculator.value();
+
+      uint32_t compare = jenkins(data.begin(), data.end());
+
+      CHECK_EQUAL(compare, hash);
+    }
+
+    //*************************************************************************
+    TEST(test_jenkins_add_range_endian)
+    {
+      std::vector<uint8_t>  data1 = { 0x01U, 0x02U, 0x03U, 0x04U, 0x05U, 0x06U, 0x07U, 0x08U };
+      std::vector<uint32_t> data2 = { 0x04030201UL, 0x08070605UL };
+      std::vector<uint8_t>  data3 = { 0x08U, 0x07U, 0x06U, 0x05U, 0x04U, 0x03U, 0x02U, 0x01U };
+
+      uint32_t hash1 = etl::jenkins(data1.begin(), data1.end());
+      uint32_t hash2 = etl::jenkins((uint8_t*)&data2[0], (uint8_t*)&data2[0] + (data2.size() * sizeof(uint32_t)));
+      uint32_t hash3 = etl::jenkins(data3.rbegin(), data3.rend());
+
+      CHECK_EQUAL(hash1, hash2);
+      CHECK_EQUAL(hash1, hash3);
+
+      uint64_t compare1 = jenkins(data1.begin(), data1.end());
+      CHECK_EQUAL(compare1, hash1);
+
+      uint64_t compare2 = jenkins((uint8_t*)&data2[0], (uint8_t*)&data2[0] + (data2.size() * sizeof(uint32_t)));
+      CHECK_EQUAL(compare2, hash2);
+
+      uint64_t compare3 = jenkins(data3.rbegin(), data3.rend());
+      CHECK_EQUAL(compare3, hash3);
+    }
+
+    //*************************************************************************
+    TEST(test_jenkins_finalised_exception)
+    {
+      std::string data("123456789");
+
+      etl::jenkins j32;
+      j32.add(data.begin(), data.end());
+
+      j32.value();
+
+      CHECK_THROW(j32.add(0), etl::hash_finalized);
+    }
+  };
+}
+