Fix a bug with wrapping of single line summaries

pydocstringformatter/formatting/formatter.py

@@ -70,8 +70,21 @@ def _treat_summary(
     ) -> str:
         """Wrap the summary of a docstring."""
 
-        # We need to deduct ending quotes if there is no description
-        line_length = 88 if description_exists else 88 - quotes_length
+        line_length = 88
+
+        # Without a description we need to consider the length including closing quotes
+        if not description_exists:
+
+            # Calculate length without the ending quotes
+            length_without_ending = indent_length + quotes_length + len(summary)
+
+            # If potential length is less than line length we need to consider ending
+            # quotes as well for the line length
+            if length_without_ending < line_length:
+                # We substract one more because we don't want a new line with just the
+                # ending quotes
+                line_length -= quotes_length + 1
+
         summary_lines = summary.splitlines()
 
         new_summary = "\n".join(

tests/data/format/linewrap_summary/function_docstrings.py

@@ -25,3 +25,17 @@ def func():
 # exceeds the max length.
 def func():
     """A multi-line summary that can be on one line. Something that is just too longgg."""
+
+
+def func():
+    """A multi-line summary that can be on one line. Something that is just too long."""
+
+
+def func():
+    """A multi-line summary that can be on one line. Something that is just too lon."""
+
+
+# Regression for bug found in pylint
+# We should re-add the quotes to line length if they will never be on the first line.
+class LinesChunk:
+    """The LinesChunk object computes and stores the hash of some consecutive stripped lines of a lineset."""

tests/data/format/linewrap_summary/function_docstrings.py.out

@@ -29,3 +29,21 @@ def func():
     """A multi-line summary that can be on one line. Something that is just too
     longgg.
     """
+
+
+def func():
+    """A multi-line summary that can be on one line. Something that is just too
+    long.
+    """
+
+
+def func():
+    """A multi-line summary that can be on one line. Something that is just too lon."""
+
+
+# Regression for bug found in pylint
+# We should re-add the quotes to line length if they will never be on the first line.
+class LinesChunk:
+    """The LinesChunk object computes and stores the hash of some consecutive stripped
+    lines of a lineset.
+    """