added test files and utils module

b_asic/__init__.py

@@ -12,3 +12,4 @@ from b_asic.signal_flow_graph import *
 from b_asic.signal import *
 from b_asic.simulation import *
 from b_asic.special_operations import *
+from b_asic.utils import *
\ No newline at end of file

b_asic/utils.py

+"""@package docstring
+B-ASIC Utils Module.
+This module contains functions that are used as utilities by other modules or by the user.
+"""
+
+from typing import Optional
+import pickle
+
+from b_asic import AbstractOperation
+
+
+def save_structure(struct: AbstractOperation, path: Optional[str] = None) -> str: 
+    """Saves the structure to a specific path using the pickle module.
+    Returns the path to the struct if save succeeds.
+    
+    Arguments:
+    struct: The structure to save.
+
+    Keyword Arguments:
+    path: The path to which the structure will be saved.
+    """
+    pass
+
+def load_structure(path: str) -> AbstractOperation:
+    """Saves the structure to a specific path using the pickle module.
+    Returns the struct that was loaded from the path.
+
+    Keyword Arguments:
+    path: The path to which the structure will be loaded from.
+    """
+    pass
\ No newline at end of file

test/test_load_save_structure.py

+from os.path import isfile
+
+import pytest
+
+from b_asic import SFG, Output, load_structure, save_structure
+
+
+class TestSaveStructures:
+
+    def test_save_sfg(self, large_operation_tree):
+        sfg = SFG(outputs=[Output(large_operation_tree)])
+        path = save_structure(sfg)
+        
+        assert path is not None
+        assert isfile(path)
+
+    def test_load_sfg(self, large_operation_tree):
+        sfg = SFG(outputs=[Output(large_operation_tree)])
+        path = save_structure(sfg)
+        _sfg = load_structure(path)
+        
+        assert isinstance(_sfg, SFG)
+        assert sfg.components == _sfg.components
+
+    def test_save_sfg_custom_path(self, large_operation_tree):
+        sfg = SFG(outputs=[Output(large_operation_tree)])
+        path = save_structure(sfg, path="structures/test")
+        
+        assert path is not None
+        assert isfile(path)
+
+    def test_load_sfg_custom_path(self, large_operation_tree):
+        sfg = SFG(outputs=[Output(large_operation_tree)])
+        path = save_structure(sfg, path="structures/test")
+        _sfg = load_structure(path)
+
+        assert isinstance(_sfg, SFG)
+        assert sfg.components == _sfg.components   
+
+
+