Raise `PTH201` for `Path("")` (#6095)

crates/ruff/resources/test/fixtures/flake8_use_pathlib/PTH201.py

@@ -5,6 +5,7 @@ from pathlib import Path as pth
 _ = Path(".")
 _ = pth(".")
 _ = PurePath(".")
+_ = Path("")
 
 # no match
 _ = Path()

crates/ruff/src/rules/flake8_use_pathlib/rules/path_constructor_current_directory.rs

@@ -73,13 +73,11 @@ pub(crate) fn path_constructor_current_directory(checker: &mut Checker, expr: &E
         return;
     };
 
-    if value != "." {
-        return;
-    }
-
+    if matches!(value.as_str(), "" | ".") {
         let mut diagnostic = Diagnostic::new(PathConstructorCurrentDirectory, *range);
         if checker.patch(diagnostic.kind.rule()) {
             diagnostic.set_fix(Fix::automatic(Edit::range_deletion(*range)));
         }
         checker.diagnostics.push(diagnostic);
+    }
 }

crates/ruff/src/rules/flake8_use_pathlib/snapshots/ruff__rules__flake8_use_pathlib__tests__PTH201_PTH201.py.snap

@@ -19,7 +19,7 @@ PTH201.py:5:10: PTH201 [*] Do not pass the current directory explicitly to `Path
   5 |+_ = Path()
 6 6 | _ = pth(".")
 7 7 | _ = PurePath(".")
-8 8 | 
+8 8 | _ = Path("")
 
 PTH201.py:6:9: PTH201 [*] Do not pass the current directory explicitly to `Path`
   |
@@ -28,6 +28,7 @@ PTH201.py:6:9: PTH201 [*] Do not pass the current directory explicitly to `Path`
 6 | _ = pth(".")
   |         ^^^ PTH201
 7 | _ = PurePath(".")
+8 | _ = Path("")
   |
   = help: Remove the current directory argument
 
@@ -38,8 +39,8 @@ PTH201.py:6:9: PTH201 [*] Do not pass the current directory explicitly to `Path`
 6   |-_ = pth(".")
   6 |+_ = pth()
 7 7 | _ = PurePath(".")
-8 8 | 
-9 9 | # no match
+8 8 | _ = Path("")
+9 9 | 
 
 PTH201.py:7:14: PTH201 [*] Do not pass the current directory explicitly to `Path`
   |
@@ -47,8 +48,7 @@ PTH201.py:7:14: PTH201 [*] Do not pass the current directory explicitly to `Path
 6 | _ = pth(".")
 7 | _ = PurePath(".")
   |              ^^^ PTH201
-8 | 
-9 | # no match
+8 | _ = Path("")
   |
   = help: Remove the current directory argument
 
@@ -58,8 +58,29 @@ PTH201.py:7:14: PTH201 [*] Do not pass the current directory explicitly to `Path
 6 6 | _ = pth(".")
 7   |-_ = PurePath(".")
   7 |+_ = PurePath()
-8 8 | 
-9 9 | # no match
-10 10 | _ = Path()
+8 8 | _ = Path("")
+9 9 | 
+10 10 | # no match
+
+PTH201.py:8:10: PTH201 [*] Do not pass the current directory explicitly to `Path`
+   |
+ 6 | _ = pth(".")
+ 7 | _ = PurePath(".")
+ 8 | _ = Path("")
+   |          ^^ PTH201
+ 9 | 
+10 | # no match
+   |
+   = help: Remove the current directory argument
+
+ℹ Fix
+5 5 | _ = Path(".")
+6 6 | _ = pth(".")
+7 7 | _ = PurePath(".")
+8   |-_ = Path("")
+  8 |+_ = Path()
+9 9 | 
+10 10 | # no match
+11 11 | _ = Path()