added tests for summarizer

Author: dalager

src/graphedexcel/excel_parser.py

@@ -19,7 +19,7 @@ def extract_references(formula: str) -> Tuple[List[str], List[str], Dict[str, st
 
     Returns:
         Tuple[List[str], List[str], Dict[str, str]]: A tuple containing lists of direct references,
-                                                     range references, and a dictionary of dependencies.
+        range references, and a dictionary of dependencies.
     """
     formula = formula.replace("$", "")
     matches = re.findall(CELL_REF_REGEX, formula)

src/graphedexcel/graph_summarizer.py

@@ -1,13 +1,16 @@
 from collections import Counter
+import networkx as nx
 
 
-def print_summary(graph, functionsdict):
+def print_summary(graph: nx.Graph, functionsdict: dict[str, int]) -> None:
     """
-    Summarize a networkx DiGraph representing a dependency graph and print the most used functions in the formulas.
+    Summarize a networkx DiGraph representing a dependency
+    graph and print the most used functions in the formulas.
     """
     strpadsize = 28
     numpadsize = 5
 
+    print()
     print_basic_info(graph, strpadsize, numpadsize)
     print_highest_degree_nodes(graph, strpadsize, numpadsize)
     print_most_used_functions(functionsdict, strpadsize, numpadsize)

tests/test_cell_reference_extraction.py tests/test_excel_parser.py

@@ -0,0 +1,33 @@
+from graphedexcel.graph_summarizer import print_summary
+import networkx as nx
+
+
+def test_graph_with_functionsstats():
+    # Test that the function runs without errors
+    G = nx.DiGraph()
+    G.add_node("Src", sheet="Sheet1")
+    G.add_node("Dest", sheet="Sheet2")
+    G.add_edge("Src", "Dest")
+
+    print_summary(G, {"SUM": 5, "AVERAGE": 3})
+    assert True
+
+
+# can handle empty graph
+def test_empty_graph():
+    # Test that the function runs without errors
+    G = nx.DiGraph()
+    print_summary(G, {"SUM": 5, "AVERAGE": 3})
+    assert True
+
+
+# can handle empty functionsdict
+def test_empty_functionsdict():
+    # Test that the function runs without errors
+    G = nx.DiGraph()
+    G.add_node("Src", sheet="Sheet1")
+    G.add_node("Dest", sheet="Sheet2")
+    G.add_edge("Src", "Dest")
+
+    print_summary(G, {})
+    assert True