Add unit test for xTaskGetIdleTaskHandleForCore (#1119)

* Add unit test for xTaskGetIdleTaskHandleForCore()

---------

Co-authored-by: Rahul Kar <118818625+kar-rahul-aws@users.noreply.github.com>

FreeRTOS/Test/CMock/smp/config_assert/config_assert_utest.c

@@ -115,6 +115,7 @@ extern volatile UBaseType_t uxTopReadyPriority;
 extern List_t pxReadyTasksLists[ configMAX_PRIORITIES ];
 extern volatile TickType_t xTickCount;
 extern volatile TickType_t xNextTaskUnblockTime;
+extern TaskHandle_t xIdleTaskHandles[ configNUMBER_OF_CORES ];
 
 /* ==========================  STATIC FUNCTIONS  ========================== */
 static void vFakeAssertStub( bool x,
@@ -669,3 +670,70 @@ void test_vTaskStepTick_assert_tick_to_jump_eq_0( void )
     /* Test Verifications */
     validate_and_clear_assertions();
 }
+
+/**
+ * @brief xTaskGetIdleTaskHandleForCore - assert if xCoreID is less than 0
+ *
+ * <b>Coverage</b>
+ * @code{c}
+ * configASSERT( taskVALID_CORE_ID( xCoreID ) == pdTRUE );
+ * @endcode
+ * taskVALID_CORE_ID( xCoreID ) is false with xCoreID less than 0.
+ */
+void test_xTaskGetIdleTaskHandleForCore_assert_invalid_core_id_lt( void )
+{
+    /* API Call */
+    EXPECT_ASSERT_BREAK( xTaskGetIdleTaskHandleForCore( -1 ) );
+
+    /* Test Verifications */
+    validate_and_clear_assertions();
+}
+
+/**
+ * @brief xTaskGetIdleTaskHandleForCore - assert if xCoreID is greater or equal
+ * than configNUMBER_OF_CORES
+ *
+ * <b>Coverage</b>
+ * @code{c}
+ * configASSERT( taskVALID_CORE_ID( xCoreID ) == pdTRUE );
+ * @endcode
+ * taskVALID_CORE_ID( xCoreID ) is false with xCoreID greater or equal than configNUMBER_OF_CORES
+ */
+void test_xTaskGetIdleTaskHandleForCore_assert_invalid_core_id_ge( void )
+{
+    /* API Call */
+    EXPECT_ASSERT_BREAK( xTaskGetIdleTaskHandleForCore( configNUMBER_OF_CORES ) );
+
+    /* Test Verifications */
+    validate_and_clear_assertions();
+}
+
+/**
+ * @brief xTaskGetIdleTaskHandleForCore - assert if idle task handle is NULL due to
+ * scheduler not started.
+ *
+ * <b>Coverage</b>
+ * @code{c}
+ * configASSERT( ( xIdleTaskHandles[ xCoreID ] != NULL ) );
+ * @endcode
+ * ( xIdleTaskHandles[ xCoreID ] != NULL ) is false.
+ */
+void test_xTaskGetIdleTaskHandleForCore_assert_null_idle_task_handle( void )
+{
+    BaseType_t xCoreID;
+
+    /* Setup the variables and structure. */
+    for( xCoreID = 0; xCoreID < configNUMBER_OF_CORES; xCoreID++ )
+    {
+        xIdleTaskHandles[ xCoreID ] = NULL;
+    }
+
+    for( xCoreID = 0; xCoreID < configNUMBER_OF_CORES; xCoreID++ )
+    {
+        /* API Call */
+        EXPECT_ASSERT_BREAK( xTaskGetIdleTaskHandleForCore( xCoreID ) );
+
+        /* Test Verifications */
+        validate_and_clear_assertions();
+    }
+}

FreeRTOS/Test/CMock/smp/multiple_priorities_no_timeslice/covg_multiple_priorities_no_timeslice_utest.c

@@ -4679,3 +4679,45 @@ void test_coverage_prvCreateIdleTasks_get_static_memory( void )
         TEST_ASSERT_EQUAL( xIdleTaskHandles[ xCoreID ]->pxStack, &uxIdleTaskStacks[ xCoreID ][ 0 ] );
     }
 }
+
+/**
+ * @brief xTaskGetIdleTaskHandleForCore - get the idle task handle by core
+ *
+ * Verify idle task handle returned is correct.
+ *
+ * <b>Coverage</b>
+ * @code{c}
+ * TaskHandle_t xTaskGetIdleTaskHandleForCore( BaseType_t xCoreID )
+ * {
+ *     ...
+ *     return xIdleTaskHandles[ xCoreID ];
+ * }
+ * @endcode
+ * The happy path test to return the idle task handles.
+ */
+void test_coverage_xTaskGetIdleTaskHandleForCore_success( void )
+{
+    TCB_t xTaskTCBs[ configNUMBER_OF_CORES ] = { NULL };
+    TaskHandle_t xReturnedIdleTaskHandle;
+    BaseType_t xCoreID;
+
+    /* Setup the variables and structure. */
+    /* Create coreNUMBER_OF_CORES idle tasks. */
+    for( xCoreID = 0; xCoreID < configNUMBER_OF_CORES; xCoreID++ )
+    {
+        vCreateStaticTestTask( &xTaskTCBs[ xCoreID ],
+                               tskIDLE_PRIORITY,
+                               xCoreID,
+                               pdTRUE );
+        xIdleTaskHandles[ xCoreID ] = &xTaskTCBs[ xCoreID ];
+    }
+
+    for( xCoreID = 0; xCoreID < configNUMBER_OF_CORES; xCoreID++ )
+    {
+        /* API call. */
+        xReturnedIdleTaskHandle = xTaskGetIdleTaskHandleForCore( xCoreID );
+
+        /* Validation. */
+        TEST_ASSERT_EQUAL( xIdleTaskHandles[ xCoreID ], xReturnedIdleTaskHandle );
+    }
+}

FreeRTOS/Test/CMock/tasks/tasks_freertos/FreeRTOS.h

@@ -242,6 +242,14 @@
     #define INCLUDE_xTaskGetIdleTaskHandle    0
 #endif
 
+#ifndef traceENTER_xTaskGetIdleTaskHandleForCore
+    #define traceENTER_xTaskGetIdleTaskHandleForCore( xCoreID )
+#endif
+
+#ifndef traceRETURN_xTaskGetIdleTaskHandleForCore
+    #define traceRETURN_xTaskGetIdleTaskHandleForCore( xIdleTaskHandle )
+#endif
+
 #ifndef INCLUDE_xTaskAbortDelay
     #define INCLUDE_xTaskAbortDelay    0
 #endif