Refine demo

api/operation.py

@@ -118,7 +118,7 @@ def execute_redo(name: str) -> None:
     _execute(name, redo)
     _update_current_operation(name, curr, child)
 
-# snapshot support to check out between different version of database
+# snapshot support to checkout between different version of database
 # snapshot is persistent
 # since redo always remember the recently undo path
 

new_demo.py

@@ -4,6 +4,8 @@ from tjnetwork_new import *
 def demo_snapshot():
     p = "demo_snapshot"
 
+    print(p)
+
     if is_project_open(p):
         close_project(p)
 
@@ -30,8 +32,14 @@ def demo_snapshot():
     add_junction(p, 'j-8', 10.0, 20.0, 30.0)
     take_snapshot(p, "5-6-7-8")
 
+    print("before checkout, it should be 5, 6, 7, 8")
+    print(get_nodes(p))
+
     pick_snapshot(p, "1-2-3-4")
 
+    print("after checkout, it should be 1, 2, 3, 4")
+    print(get_nodes(p))
+
     close_project(p)
     # delete_project(p)
 
@@ -39,6 +47,8 @@ def demo_snapshot():
 def demo_transaction():
     p = "demo_transaction"
 
+    print(p)
+
     if is_project_open(p):
         close_project(p)
 
@@ -60,12 +70,18 @@ def demo_transaction():
     add_junction(p, 'j-4', 10.0, 20.0, 30.0)
     take_snapshot(p, "4")
 
+    print("before rollback, it should be 1, 2, 3, 4")
+    print(get_nodes(p))
+
+    print("after rollback, it should be 1, 2")
     abort_transaction(p)
 
-    print(have_snapshot(p, "1"))
-    print(have_snapshot(p, "2"))
-    print(have_snapshot(p, "3"))
-    print(have_snapshot(p, "4"))
+    print(get_nodes(p))
+
+    print(f"have snapshot 1: {have_snapshot(p, '1')}")
+    print(f"have snapshot 2: {have_snapshot(p, '2')}")
+    print(f"have snapshot 3: {have_snapshot(p, '3')}")
+    print(f"have snapshot 4: {have_snapshot(p, '4')}")
 
     close_project(p)
     # delete_project(p)
@@ -74,6 +90,8 @@ def demo_transaction():
 def demo_1_title():
     p = "demo_1_title"
 
+    print(p)
+
     if is_project_open(p):
         close_project(p)
 
@@ -104,6 +122,8 @@ def demo_1_title():
 def demo_2_junctions():
     p = "demo_2_junctions"
 
+    print(p)
+
     if is_project_open(p):
         close_project(p)
 
@@ -157,8 +177,8 @@ def demo_2_junctions():
 
 
 if __name__ == "__main__":
-    # demo_snapshot()
+    demo_snapshot()
     demo_transaction()
-    # demo_1_title()
-    # demo_2_junctions()
+    demo_1_title()
+    demo_2_junctions()
     pass