From ea275e929f93b474fc703756bfaf45f9c052056e Mon Sep 17 00:00:00 2001
From: Schamper <1254028+Schamper@users.noreply.github.com>
Date: Wed, 30 Oct 2024 17:11:12 +0100
Subject: [PATCH] Make filesystem exceptions subclass from standard library
 exceptions

---
 dissect/target/exceptions.py |  6 +++---
 tests/test_exceptions.py     | 19 +++++++++++++++++++
 2 files changed, 22 insertions(+), 3 deletions(-)
 create mode 100644 tests/test_exceptions.py

diff --git a/dissect/target/exceptions.py b/dissect/target/exceptions.py
index aea713290..5f52633cc 100644
--- a/dissect/target/exceptions.py
+++ b/dissect/target/exceptions.py
@@ -72,15 +72,15 @@ class PluginNotFoundError(PluginError):
     """Plugin cannot be found."""
 
 
-class FileNotFoundError(FilesystemError):
+class FileNotFoundError(FilesystemError, FileNotFoundError):
     """The requested path could not be found."""
 
 
-class IsADirectoryError(FilesystemError):
+class IsADirectoryError(FilesystemError, IsADirectoryError):
     """The entry is a directory."""
 
 
-class NotADirectoryError(FilesystemError):
+class NotADirectoryError(FilesystemError, NotADirectoryError):
     """The entry is not a directory."""
 
 
diff --git a/tests/test_exceptions.py b/tests/test_exceptions.py
new file mode 100644
index 000000000..29e049430
--- /dev/null
+++ b/tests/test_exceptions.py
@@ -0,0 +1,19 @@
+import pytest
+
+from dissect.target import exceptions
+
+
+@pytest.mark.parametrize(
+    "exc, std",
+    [
+        (exceptions.FileNotFoundError, FileNotFoundError),
+        (exceptions.IsADirectoryError, IsADirectoryError),
+        (exceptions.NotADirectoryError, NotADirectoryError),
+    ],
+)
+def test_filesystem_error_subclass(exc: exceptions.Error, std: Exception) -> None:
+    assert issubclass(exc, (std, exceptions.FilesystemError))
+    assert isinstance(exc(), (std, exceptions.FilesystemError))
+
+    with pytest.raises(std):
+        raise exc()