Add list_insert_empty() function

Author: adazem009

src/scratch/list_functions.cpp

@@ -22,4 +22,9 @@ extern "C"
     {
         return &list->appendEmpty();
     }
+
+    ValueData *list_insert_empty(List *list, size_t index)
+    {
+        return &list->insertEmpty(index);
+    }
 }

src/scratch/list_functions.h

@@ -16,6 +16,7 @@ extern "C"
     void list_remove(List *list, size_t index);
 
     ValueData *list_append_empty(List *list);
+    ValueData *list_insert_empty(List *list, size_t index);
 }
 
 } // namespace libscratchcpp

test/scratch_classes/list_functions_test.cpp

@@ -52,3 +52,20 @@ TEST(ListFunctionsTest, AppendEmpty)
     value_assign_string(v, "test");
     ASSERT_EQ(list.toString(), "Lorem ipsum 5 test");
 }
+
+TEST(ListFunctionsTest, InsertEmpty)
+{
+    List list("", "test list");
+    list.append("Lorem");
+    list.append("ipsum");
+
+    ValueData *v = list_insert_empty(&list, 0);
+    value_init(v);
+    value_assign_double(v, 5);
+    ASSERT_EQ(list.toString(), "5 Lorem ipsum");
+
+    v = list_insert_empty(&list, 2);
+    value_init(v);
+    value_assign_string(v, "test");
+    ASSERT_EQ(list.toString(), "5 Lorem test ipsum");
+}