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_chrono_month_weekday.cpp

@@ -0,0 +1,124 @@
+/******************************************************************************
+The MIT License(MIT)
+
+Embedded Template Library.
+https://github.com/ETLCPP/etl
+https://www.etlcpp.com
+
+Documentation: 
+
+Copyright(c) 2024 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 "etl/platform.h"
+
+#include "unit_test_framework.h"
+
+#include "etl/chrono.h"
+
+#include <vector>
+#include <algorithm>
+
+// Set to 0 to reference against std::chrono
+#define ETL_USING_ETL_CHRONO 1
+
+#if ETL_USING_ETL_CHRONO
+  #define Chrono etl::chrono
+#else
+  #if ETL_USING_CPP20
+    #include <chrono>
+    #define Chrono std::chrono
+  #else
+    #error std::chrono not supported
+  #endif
+#endif
+
+namespace
+{
+  SUITE(test_chrono_month_weekday)
+  {
+    //*************************************************************************
+    TEST(test_constructor_with_month_and_day)
+    {
+      Chrono::month_weekday mwd{ Chrono::January, Chrono::weekday_indexed(Chrono::Friday, 2) };
+
+      CHECK_TRUE(mwd.ok()); // Valid month_weekday
+      CHECK_EQUAL(Chrono::January, mwd.month());
+      CHECK_EQUAL(Chrono::Friday.c_encoding(), mwd.weekday_indexed().weekday().c_encoding());
+      CHECK_EQUAL(2, mwd.weekday_indexed().index());
+    }
+
+    //*************************************************************************
+    TEST(test_invalid_month_weekday)
+    {
+      Chrono::month_weekday mwd{Chrono::month{13}, Chrono::weekday_indexed(Chrono::Friday, 2)}; // Invalid month (13)
+
+      CHECK_FALSE(mwd.ok()); // Invalid month_weekday
+    }
+
+    //*************************************************************************
+    TEST(test_invalid_day_in_month_weekday)
+    {
+      Chrono::month_weekday mwd{Chrono::January, Chrono::weekday_indexed(Chrono::weekday{8}, 2)}; // Invalid day (8)
+
+      CHECK_FALSE(mwd.ok()); // Invalid month_weekday
+    }
+
+    //*************************************************************************
+    TEST(test_month_weekday_equality_operator)
+    {
+      Chrono::month_weekday mwd1{Chrono::January,  Chrono::weekday_indexed(Chrono::Friday, 2)};
+      Chrono::month_weekday mwd2{Chrono::February, Chrono::weekday_indexed(Chrono::Friday, 2)};
+
+      CHECK_TRUE(mwd1 == mwd1);  // January == January
+      CHECK_FALSE(mwd1 == mwd2); // January != February
+      CHECK_FALSE(mwd1 == mwd2); // Friday != Saturday
+    }
+
+    //*************************************************************************
+    TEST(test_month_weekday_not_equality_operator)
+    {
+      Chrono::month_weekday mwd1{Chrono::January,  Chrono::weekday_indexed(Chrono::Friday, 2)};
+      Chrono::month_weekday mwd2{Chrono::February, Chrono::weekday_indexed(Chrono::Friday, 2)};
+
+      CHECK_FALSE(mwd1 != mwd1); // January == January
+      CHECK_TRUE(mwd1 != mwd2);  // January != February
+      CHECK_TRUE(mwd1 != mwd2);  // Friday != Saturday
+    }
+
+#if ETL_USING_ETL_CHRONO
+    //*************************************************************************
+    TEST(test_month_weekday_hashes_are_unique)
+    {
+      std::vector<size_t> hashes;
+
+      for (int i = 0; i < 256; ++i)
+      {
+        hashes.push_back(etl::hash<Chrono::month_weekday>()(Chrono::month_weekday(Chrono::month((i % 12) + 1), Chrono::weekday_indexed(Chrono::weekday(i % 7), i % 5))));
+      }
+
+      std::sort(hashes.begin(), hashes.end());
+      (void)std::unique(hashes.begin(), hashes.end());
+      CHECK_EQUAL(256U, hashes.size());
+    }
+#endif
+  };
+}