Add test case for docstring with comments

crates/ruff_python_formatter/resources/test/fixtures/ruff/blank_line_before_class_docstring.options.json

@@ -0,0 +1,5 @@
+[
+  {
+    "preview": "enabled"
+  }
+]

crates/ruff_python_formatter/resources/test/fixtures/ruff/blank_line_before_class_docstring.py

@@ -0,0 +1,38 @@
+class NormalDocstring:
+
+    """This is a docstring."""
+
+
+class DocstringWithComment0:
+    # This is a comment
+    """This is a docstring."""
+
+
+class DocstringWithComment1:
+    # This is a comment
+
+    """This is a docstring."""
+
+
+class DocstringWithComment2:
+
+    # This is a comment
+    """This is a docstring."""
+
+
+class DocstringWithComment3:
+
+    # This is a comment
+
+    """This is a docstring."""
+
+
+class DocstringWithComment4:
+
+
+    # This is a comment
+
+
+    """This is a docstring."""
+
+

crates/ruff_python_formatter/tests/snapshots/format@blank_line_before_class_docstring.py.snap

@@ -0,0 +1,95 @@
+---
+source: crates/ruff_python_formatter/tests/fixtures.rs
+input_file: crates/ruff_python_formatter/resources/test/fixtures/ruff/blank_line_before_class_docstring.py
+---
+## Input
+```python
+class NormalDocstring:
+
+    """This is a docstring."""
+
+
+class DocstringWithComment0:
+    # This is a comment
+    """This is a docstring."""
+
+
+class DocstringWithComment1:
+    # This is a comment
+
+    """This is a docstring."""
+
+
+class DocstringWithComment2:
+
+    # This is a comment
+    """This is a docstring."""
+
+
+class DocstringWithComment3:
+
+    # This is a comment
+
+    """This is a docstring."""
+
+
+class DocstringWithComment4:
+
+
+    # This is a comment
+
+
+    """This is a docstring."""
+
+
+```
+
+## Outputs
+### Output 1
+```
+indent-style               = space
+line-width                 = 88
+indent-width               = 4
+quote-style                = Double
+line-ending                = LineFeed
+magic-trailing-comma       = Respect
+docstring-code             = Disabled
+docstring-code-line-width  = "dynamic"
+preview                    = Enabled
+```
+
+```python
+class NormalDocstring:
+    """This is a docstring."""
+
+
+class DocstringWithComment0:
+    # This is a comment
+    """This is a docstring."""
+
+
+class DocstringWithComment1:
+    # This is a comment
+
+    """This is a docstring."""
+
+
+class DocstringWithComment2:
+    # This is a comment
+    """This is a docstring."""
+
+
+class DocstringWithComment3:
+    # This is a comment
+
+    """This is a docstring."""
+
+
+class DocstringWithComment4:
+    # This is a comment
+
+    """This is a docstring."""
+```
+
+
+