Add tests to increase queue code coverage (#770)

These tests cover the following portion in the queue code:

static void prvUnlockQueue( Queue_t * const pxQueue )
{
    ...

    if( prvNotifyQueueSetContainer( pxQueue ) != pdFALSE )
    {
        /* The queue is a member of a queue set, and posting to
            * the queue set caused a higher priority task to unblock.
            * A context switch is required. */
        vTaskMissedYield();
    }
    else
    {
        mtCOVERAGE_TEST_MARKER();
    }

    ...
}

Signed-off-by: Gaurav Aggarwal <aggarg@amazon.com>

FreeRTOS/Test/CMock/queue/sets/queue_in_set_utest.c

@@ -370,6 +370,97 @@ void test_macro_xQueueSendFromISR_in_set_high_priority_pending( void )
     vQueueDelete( xQueueSet );
 }
 
+/**
+ * @brief Test xQueueSendFromISR with a higher priority task waiting on a locked queue in Queue Set.
+ * @details Test xQueueSendFromISR with a higher priority task waiting on a locked queue and
+ *  verifies that xTaskResumeAll resumes the high priority task.
+ * @coverage xQueueGenericSendFromISR
+ */
+void test_macro_xQueueSendFromISR_in_set_locked_and_high_priority_pending( void )
+{
+    QueueHandle_t xQueue = xQueueCreate( 1, sizeof( uint32_t ) );
+    QueueSetHandle_t xQueueSet = xQueueCreateSet( 1 );
+
+    xQueueAddToSet( xQueue, xQueueSet );
+
+    vFakePortAssertIfInterruptPriorityInvalid_Expect();
+
+    /* Insert an item into the event list. */
+    td_task_setFakeTaskPriority( DEFAULT_PRIORITY + 1 );
+    td_task_addFakeTaskWaitingToReceiveFromQueue( xQueueSet );
+
+    /* Lock the queue. */
+    vSetQueueTxLock( xQueue, queueLOCKED_UNMODIFIED );
+    uxTaskGetNumberOfTasks_IgnoreAndReturn( 1 );
+
+    uint32_t testVal = getNextMonotonicTestValue();
+
+    /* Add item to queue. */
+    TEST_ASSERT_EQUAL( pdTRUE, xQueueSendFromISR( xQueue, &testVal, NULL ) );
+    /* This call will trigger unlocking of the queue which eventually calls xTaskResumeAll. */
+    TEST_ASSERT_EQUAL( errQUEUE_FULL, xQueueSend( xQueue, &testVal, 1 ) );
+
+    /* Ensure that the xTaskResumeAll resumes high priority task. */
+    TEST_ASSERT_EQUAL( 1, td_task_getYieldCount() );
+    TEST_ASSERT_EQUAL( 1, td_task_getCount_YieldFromTaskResumeAll() );
+    TEST_ASSERT_EQUAL( 1, td_task_getCount_vTaskMissedYield() );
+
+    QueueHandle_t xQueueTemp = xQueueSelectFromSet( xQueueSet, 0 );
+    uint32_t checkVal = INVALID_UINT32;
+
+    xQueueReceive( xQueueTemp, &checkVal, 0 );
+    TEST_ASSERT_EQUAL( testVal, checkVal );
+
+    vQueueDelete( xQueue );
+    vQueueDelete( xQueueSet );
+}
+
+/**
+ * @brief Test xQueueSendFromISR with a low priority task waiting on a locked queue in Queue Set.
+ * @details Test xQueueSendFromISR with a low priority task waiting on a locked queue and
+ *  verifies that xTaskResumeAll does not resume the low priority task.
+ * @coverage xQueueGenericSendFromISR
+ */
+void test_macro_xQueueSendFromISR_in_set_locked_and_low_priority_pending( void )
+{
+    QueueHandle_t xQueue = xQueueCreate( 1, sizeof( uint32_t ) );
+    QueueSetHandle_t xQueueSet = xQueueCreateSet( 1 );
+
+    xQueueAddToSet( xQueue, xQueueSet );
+
+    vFakePortAssertIfInterruptPriorityInvalid_Expect();
+
+    /* Insert an item into the event list. */
+    td_task_setFakeTaskPriority( DEFAULT_PRIORITY - 1 );
+    td_task_addFakeTaskWaitingToReceiveFromQueue( xQueueSet );
+
+    /* Lock the queue. */
+    vSetQueueTxLock( xQueue, queueLOCKED_UNMODIFIED );
+    uxTaskGetNumberOfTasks_IgnoreAndReturn( 1 );
+
+    uint32_t testVal = getNextMonotonicTestValue();
+
+    /* Add item to queue. */
+    TEST_ASSERT_EQUAL( pdTRUE, xQueueSendFromISR( xQueue, &testVal, NULL ) );
+    /* This call will trigger unlocking of the queue which eventually calls xTaskResumeAll. */
+    TEST_ASSERT_EQUAL( errQUEUE_FULL, xQueueSend( xQueue, &testVal, 1 ) );
+
+    /* Ensure that the xTaskResumeAll does not resume low priority task. */
+    TEST_ASSERT_EQUAL( 0, td_task_getCount_YieldFromTaskResumeAll() );
+    TEST_ASSERT_EQUAL( 0, td_task_getCount_vTaskMissedYield() );
+    TEST_ASSERT_EQUAL( 1, td_task_getYieldCount() );
+    TEST_ASSERT_EQUAL( 1, td_task_getCount_vPortYieldWithinAPI() );
+
+    QueueHandle_t xQueueTemp = xQueueSelectFromSet( xQueueSet, 0 );
+    uint32_t checkVal = INVALID_UINT32;
+
+    xQueueReceive( xQueueTemp, &checkVal, 0 );
+    TEST_ASSERT_EQUAL( testVal, checkVal );
+
+    vQueueDelete( xQueue );
+    vQueueDelete( xQueueSet );
+}
+
 /**
  * @brief Test xQueueSendFromISR with a lower priority task waiting on a queue in a Queue Set
  * @details Test xQueueSendFromISR on a Queeu in a Queue Set with a lower priority task waiting and