diff --git a/src/tests/src/solver/CMakeLists.txt b/src/tests/src/solver/CMakeLists.txt
index 9cf4843bd8..78390c0902 100644
--- a/src/tests/src/solver/CMakeLists.txt
+++ b/src/tests/src/solver/CMakeLists.txt
@@ -7,3 +7,4 @@ add_subdirectory(optimisation)
 add_subdirectory(optim-model-filler)
 add_subdirectory(simulation)
 add_subdirectory(utils)
+add_subdirectory(variable)
diff --git a/src/tests/src/solver/variable/CMakeLists.txt b/src/tests/src/solver/variable/CMakeLists.txt
new file mode 100644
index 0000000000..f06cb7ee2e
--- /dev/null
+++ b/src/tests/src/solver/variable/CMakeLists.txt
@@ -0,0 +1,5 @@
+include(${CMAKE_SOURCE_DIR}/tests/macros.cmake)
+
+add_boost_test(test-intermediate
+  SRC test_intermediate.cpp
+  LIBS antares-solver-variable)
diff --git a/src/tests/src/solver/variable/test_intermediate.cpp b/src/tests/src/solver/variable/test_intermediate.cpp
new file mode 100644
index 0000000000..62ccc5d045
--- /dev/null
+++ b/src/tests/src/solver/variable/test_intermediate.cpp
@@ -0,0 +1,88 @@
+/*
+ * Copyright 2007-2024, RTE (https://www.rte-france.com)
+ * See AUTHORS.txt
+ * SPDX-License-Identifier: MPL-2.0
+ * This file is part of Antares-Simulator,
+ * Adequacy and Performance assessment for interconnected energy networks.
+ *
+ * Antares_Simulator is free software: you can redistribute it and/or modify
+ * it under the terms of the Mozilla Public Licence 2.0 as published by
+ * the Mozilla Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Antares_Simulator is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * Mozilla Public Licence 2.0 for more details.
+ *
+ * You should have received a copy of the Mozilla Public Licence 2.0
+ * along with Antares_Simulator. If not, see <https://opensource.org/license/mpl-2-0/>.
+ */
+#define BOOST_TEST_MODULE "test time series"
+
+#define WIN32_LEAN_AND_MEAN
+
+#include <boost/test/unit_test.hpp>
+
+#include "antares/antares/constants.h"
+#include "antares/solver/variable/storage/intermediate.h"
+
+constexpr double TOLERANCE = 1.e-6;
+using Antares::Constants::nbHoursInAWeek;
+
+template<unsigned FirstDay, unsigned LastDay>
+struct StudyFixture
+{
+    StudyFixture():
+        study(std::make_unique<Antares::Data::Study>())
+    {
+        study->parameters.simulationDays.first = FirstDay;
+        study->parameters.simulationDays.end = LastDay;
+        study->initializeRuntimeInfos();
+    }
+
+    std::unique_ptr<Antares::Data::Study> study;
+};
+
+BOOST_AUTO_TEST_SUITE(intermediate_suite)
+using FullYearStudyFixture = StudyFixture<0, 365>;
+
+BOOST_FIXTURE_TEST_CASE(averageFromHourlyFullYear, FullYearStudyFixture)
+{
+    Antares::Solver::Variable::IntermediateValues intermediate;
+    intermediate.initializeFromStudy(*study);
+    intermediate[0] = 10; // hour 0
+    intermediate[1] = 20; // hour 1
+    intermediate.computeAveragesForCurrentYearFromHourlyResults();
+
+    constexpr int nbHoursInYear = 8736;
+    BOOST_CHECK_EQUAL(study->runtime.rangeLimits.hour[Antares::Data::rangeCount], nbHoursInYear);
+
+    BOOST_CHECK_CLOSE(intermediate.year, (10. + 20.) / nbHoursInYear, TOLERANCE);
+    BOOST_CHECK_CLOSE(intermediate.week[0], (10. + 20.) / nbHoursInAWeek, TOLERANCE);
+    BOOST_CHECK_CLOSE(intermediate.month[0], (10. + 20.) / (31 * 24), TOLERANCE);
+    BOOST_CHECK_CLOSE(intermediate.day[0], (10. + 20.) / 24, TOLERANCE);
+}
+
+using PartialYearStudyFixture = StudyFixture<0, 192>;
+
+BOOST_FIXTURE_TEST_CASE(averageFromHourlyPartialYear, PartialYearStudyFixture)
+{
+    Antares::Solver::Variable::IntermediateValues intermediate;
+    intermediate.initializeFromStudy(*study);
+    intermediate[0] = 10; // hour 0
+    intermediate[1] = 20; // hour 1
+    intermediate.computeAveragesForCurrentYearFromHourlyResults();
+
+    constexpr int nbWeeks = 27; // std::floor(192 / 7);
+    const int nbHoursInYear = nbWeeks * nbHoursInAWeek;
+    BOOST_CHECK_EQUAL(study->runtime.rangeLimits.week[Antares::Data::rangeCount], nbWeeks);
+    BOOST_CHECK_EQUAL(study->runtime.rangeLimits.hour[Antares::Data::rangeCount], nbHoursInYear);
+
+    BOOST_CHECK_CLOSE(intermediate.year, (10. + 20.) / nbHoursInYear, TOLERANCE);
+    BOOST_CHECK_CLOSE(intermediate.week[0], (10. + 20.) / nbHoursInAWeek, TOLERANCE);
+    BOOST_CHECK_CLOSE(intermediate.month[0], (10. + 20.) / (31 * 24), TOLERANCE);
+    BOOST_CHECK_CLOSE(intermediate.day[0], (10. + 20.) / 24, TOLERANCE);
+}
+
+BOOST_AUTO_TEST_SUITE_END()