clang-tidy: Improve const-correctness

Updated member functions to better reflect const-correctness,
enhancing code clarity and maintainability.

Change-Id: Ib3fdbd2164cb76ad7f0c454d37dd5c08652f78fc
Signed-off-by: Jayanth Othayoth <ojayanth@gmail.com>
diff --git a/tests/src/mocks/report_factory_mock.hpp b/tests/src/mocks/report_factory_mock.hpp
index 71709df..24ac28c 100644
--- a/tests/src/mocks/report_factory_mock.hpp
+++ b/tests/src/mocks/report_factory_mock.hpp
@@ -69,7 +69,7 @@
     auto& expectMake(
         std::optional<std::reference_wrapper<const ReportParams>> paramsRef,
         const testing::Matcher<interfaces::ReportManager&>& rm,
-        const testing::Matcher<interfaces::JsonStorage&>& js)
+        const testing::Matcher<interfaces::JsonStorage&>& js) const
     {
         using testing::_;
         if (paramsRef)
diff --git a/tests/src/mocks/trigger_factory_mock.hpp b/tests/src/mocks/trigger_factory_mock.hpp
index d3d83e5..a42747c 100644
--- a/tests/src/mocks/trigger_factory_mock.hpp
+++ b/tests/src/mocks/trigger_factory_mock.hpp
@@ -57,7 +57,7 @@
     auto& expectMake(
         std::optional<TriggerParams> paramsOpt,
         const testing::Matcher<interfaces::TriggerManager&>& tm,
-        const testing::Matcher<interfaces::JsonStorage&>& triggerStorage)
+        const testing::Matcher<interfaces::JsonStorage&>& triggerStorage) const
     {
         using namespace testing;
 
diff --git a/tests/src/test_report.cpp b/tests/src/test_report.cpp
index 4e5e7ae..28ad3b6 100644
--- a/tests/src/test_report.cpp
+++ b/tests/src/test_report.cpp
@@ -98,7 +98,7 @@
     }
 
     std::vector<std::shared_ptr<interfaces::Metric>>
-        getMetricsFromReadingParams(const ReadingParameters& params)
+        getMetricsFromReadingParams(const ReadingParameters& params) const
     {
         const auto metricParameters =
             reportFactoryMock->convertMetricParams(params);
diff --git a/tests/src/test_trigger_actions.cpp b/tests/src/test_trigger_actions.cpp
index 8e8274f..e1a2a1c 100644
--- a/tests/src/test_trigger_actions.cpp
+++ b/tests/src/test_trigger_actions.cpp
@@ -150,7 +150,7 @@
         commitValue = value;
     }
 
-    void commit()
+    void commit() const
     {
         std::string thresholdName = "MyThreshold";
         sut->commit("MyTrigger", std::cref(thresholdName), "MySensor",
@@ -188,7 +188,7 @@
         sut = std::make_unique<LogToRedfishEventLog>();
     }
 
-    void commit(TriggerValue value)
+    void commit(TriggerValue value) const
     {
         std::string thresholdName = "MyThreshold";
         sut->commit("MyTrigger", std::cref(thresholdName), "MySensor",
@@ -276,7 +276,7 @@
             std::make_shared<std::vector<std::string>>(std::move(names)));
     }
 
-    void commit(TriggerValue value)
+    void commit(TriggerValue value) const
     {
         sut->commit(triggerId, std::nullopt, "MySensor", Milliseconds{100'000},
                     value);