Fix get_tree_diff if path are substring of a modified path

CHANGELOG.md

@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed:
 - Misc: Doctest for docstrings, docstring to indicate usage prefers `node_name` to `name`.
 - Tree Export: Mermaid diagram title to add newline.
+- Tree Helper: Get tree diff string replacement bug when the path change is substring of another path.
 
 ## [0.22.1] - 2024-11-03
 ### Added:
@@ -21,7 +22,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [0.22.0] - 2024-11-03
 ### Added:
-- Tree Helper: Accept parameter `detail` to show the different types of shift e.g., moved / added / removed. By default it is false.
+- Tree Helper: Accept parameter `detail` to show the different types of shift e.g., moved / added / removed. By default
+it is false.
 
 ## [0.21.3] - 2024-10-16
 ### Added:
@@ -96,10 +98,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [0.19.0] - 2024-06-15
 ### Changed:
-- Tree Exporter: Print functions to accept custom style that is implemented as dataclass, this is a more
-object-oriented way of parsing arguments.
-This affects functions `print_tree`, `yield_tree`, `hprint_tree`, and `hyield_tree`.
-The argument `custom_style` is deprecated, and argument `style` is used instead.
+- Tree Exporter: Print functions to accept custom style that is implemented as dataclass, this is a more  object-oriented
+way of parsing arguments. This affects functions `print_tree`, `yield_tree`, `hprint_tree`, and `hyield_tree`. The
+argument `custom_style` is deprecated, and argument `style` is used instead.
 **This might not be backwards-compatible!**
 - Misc: Update docstrings to be more comprehensive for tree constructor and tree exporter.
 - Misc: Update documentation badges and conda information.

bigtree/tree/helper.py

@@ -5,6 +5,13 @@
 from bigtree.tree import construct, export, search
 from bigtree.utils import assertions, exceptions, iterators
 
+try:
+    import pandas as pd
+except ImportError:  # pragma: no cover
+    from unittest.mock import MagicMock
+
+    pd = MagicMock()
+
 __all__ = ["clone_tree", "get_subtree", "prune_tree", "get_tree_diff"]
 BaseNodeT = TypeVar("BaseNodeT", bound=basenode.BaseNode)
 BinaryNodeT = TypeVar("BinaryNodeT", bound=binarynode.BinaryNode)
@@ -237,6 +244,7 @@ def prune_tree(
     return tree_copy
 
 
+@exceptions.optional_dependencies_pandas
 def get_tree_diff(
     tree: node.Node,
     other_tree: node.Node,
@@ -376,6 +384,7 @@ def get_tree_diff(
     name_col = "name"
     path_col = "PATH"
     indicator_col = "Exists"
+    tree_sep = tree.sep
 
     data, data_other = (
         export.tree_to_dataframe(
@@ -406,11 +415,12 @@ def get_tree_diff(
     moved_from_indicator: List[bool] = [True for _ in range(len(nodes_removed))]
     moved_to_indicator: List[bool] = [True for _ in range(len(nodes_added))]
     if detail:
-        _sep = tree.sep
         node_names_removed = [
-            node_removed.split(_sep)[-1] for node_removed in nodes_removed
+            node_removed.split(tree_sep)[-1] for node_removed in nodes_removed
+        ]
+        node_names_added = [
+            node_added.split(tree_sep)[-1] for node_added in nodes_added
         ]
-        node_names_added = [node_added.split(_sep)[-1] for node_added in nodes_added]
         moved_from_indicator = [
             node_name_removed in node_names_added
             for node_name_removed in node_names_removed
@@ -420,15 +430,39 @@ def get_tree_diff(
             for node_name_added in node_names_added
         ]
 
+    def add_suffix_to_path(
+        _data: pd.DataFrame, _condition: pd.Series, _original_name: str, _suffix: str
+    ) -> pd.DataFrame:
+        """Add suffix to path string
+
+        Args:
+            _data (pd.DataFrame): original data with path column
+            _condition (pd.Series): whether to add suffix, contains True/False values
+            _original_name (str): path prefix to add suffix to
+            _suffix (str): suffix to add to path column
+
+        Returns:
+            (pd.DataFrame)
+        """
+        data_replace = _data[_condition]
+        data_replace[path_col] = data_replace[path_col].str.replace(
+            _original_name, f"{_original_name} ({suffix})", regex=True
+        )
+        data_not_replace = _data[~_condition]
+        return data_replace._append(data_not_replace).sort_index()
+
     for node_removed, move_indicator in zip(nodes_removed, moved_from_indicator):
         if not detail:
             suffix = "-"
         elif move_indicator:
             suffix = "moved from"
         else:
             suffix = "removed"
-        data_both[path_col] = data_both[path_col].str.replace(
-            node_removed, f"{node_removed} ({suffix})", regex=True
+        condition_node_removed = data_both[path_col].str.endswith(
+            node_removed
+        ) | data_both[path_col].str.contains(node_removed + tree_sep)
+        data_both = add_suffix_to_path(
+            data_both, condition_node_removed, node_removed, suffix
         )
     for node_added, move_indicator in zip(nodes_added, moved_to_indicator):
         if not detail:
@@ -437,8 +471,11 @@ def get_tree_diff(
             suffix = "moved to"
         else:
             suffix = "added"
-        data_both[path_col] = data_both[path_col].str.replace(
-            node_added, f"{node_added} ({suffix})", regex=True
+        condition_node_added = data_both[path_col].str.endswith(node_added) | data_both[
+            path_col
+        ].str.contains(node_added + tree_sep)
+        data_both = add_suffix_to_path(
+            data_both, condition_node_added, node_added, suffix
         )
 
     # Check tree attribute difference

tests/tree/test_helper.py

@@ -235,6 +235,23 @@ def test_tree_diff(tree_node):
         )
         assert_print_statement(export.print_tree, expected_str, tree=tree_only_diff)
 
+    @staticmethod
+    def test_tree_diff_same_prefix():
+        tree_node = node.Node(
+            "a", children=[node.Node("bb", children=[node.Node("b")])]
+        )
+        other_tree_node = node.Node("a", children=[node.Node("b")])
+        tree_only_diff = helper.get_tree_diff(tree_node, other_tree_node)
+        # fmt: off
+        expected_str = (
+            "a\n"
+            "├── b (+)\n"
+            "└── bb (-)\n"
+            "    └── b (-)\n"
+        )
+        # fmt: on
+        assert_print_statement(export.print_tree, expected_str, tree=tree_only_diff)
+
     @staticmethod
     def test_tree_diff_diff_sep_error(tree_node):
         other_tree_node = helper.prune_tree(tree_node, "a/c")