Add more test cases

crates/ruff/resources/test/fixtures/flake8_bugbear/B006_2.py

@@ -1,7 +1,6 @@
+# Docstring followed by whitespace with no newline
 # Regression test for https://github.com/astral-sh/ruff/issues/7155
 
-def readLinkagesByLineFile(linkages_file, 
-                           column_mapping={
-                           }):    
+def foobar(foor, bar={}):    
     """
-    """                           
+    """                    

crates/ruff/src/rules/flake8_bugbear/mod.rs

@@ -33,7 +33,9 @@ mod tests {
     #[test_case(Rule::JumpStatementInFinally, Path::new("B012.py"))]
     #[test_case(Rule::LoopVariableOverridesIterator, Path::new("B020.py"))]
     #[test_case(Rule::MutableArgumentDefault, Path::new("B006_B008.py"))]
+    #[test_case(Rule::MutableArgumentDefault, Path::new("B006_1.py"))]
     #[test_case(Rule::MutableArgumentDefault, Path::new("B006_2.py"))]
+    #[test_case(Rule::MutableArgumentDefault, Path::new("B006_3.py"))]
     #[test_case(Rule::NoExplicitStacklevel, Path::new("B028.py"))]
     #[test_case(Rule::RaiseLiteral, Path::new("B016.py"))]
     #[test_case(Rule::RaiseWithoutFromInsideExcept, Path::new("B904.py"))]

crates/ruff/src/rules/flake8_bugbear/snapshots/ruff__rules__flake8_bugbear__tests__B006_B006_2.py.snap

@@ -1,29 +1,27 @@
 ---
 source: crates/ruff/src/rules/flake8_bugbear/mod.rs
 ---
-B006_2.py:4:43: B006 [*] Do not use mutable data structures for argument defaults
+B006_2.py:4:22: B006 [*] Do not use mutable data structures for argument defaults
   |
-3 |   def readLinkagesByLineFile(linkages_file, 
-4 |                              column_mapping={
-  |  ___________________________________________^
-5 | |                            }):    
-  | |____________________________^ B006
-6 |       """
-7 |       """                           
+2 | # Regression test for https://github.com/astral-sh/ruff/issues/7155
+3 | 
+4 | def foobar(foor, bar={}):    
+  |                      ^^ B006
+5 |     """
+6 |     """                    
   |
   = help: Replace with `None`; initialize within function
 
 ℹ Possible fix
-1 1 | # Regression test for https://github.com/astral-sh/ruff/issues/7155
-2 2 | 
-3 3 | def readLinkagesByLineFile(linkages_file, 
-4   |-                           column_mapping={
-5   |-                           }):    
-  4 |+                           column_mapping=None):    
-6 5 |     """
-7   |-    """                           
-  6 |+    """                           
-  7 |+    if column_mapping is None:
-  8 |+        column_mapping = {}
+1 1 | # Docstring followed by whitespace with no newline
+2 2 | # Regression test for https://github.com/astral-sh/ruff/issues/7155
+3 3 | 
+4   |-def foobar(foor, bar={}):    
+  4 |+def foobar(foor, bar=None):    
+5 5 |     """
+6   |-    """                    
+  6 |+    """                    
+  7 |+    if bar is None:
+  8 |+        bar = {}