Associate a trailing end-of-line comment in a parenthesized implicit concatenated string with the last literal (#15378)

crates/ruff_python_formatter/resources/test/fixtures/ruff/expression/join_implicit_concatenated_string_assignment.py

@@ -291,3 +291,87 @@ aaaaa[aaaaaaaaaaa] = (
     f"testeeeeeeeeeeeeeeeeeeeeeeeee{a
     =}" "moreeeeeeeeeeeeeeeeeetest"  # comment
 )
+
+
+# Trailing last-part comments
+
+a = (
+    "a"
+    "b"  # belongs to `b`
+)
+
+a: Literal[str] = (
+    "a"
+    "b"  # belongs to `b`
+)
+
+a += (
+    "a"
+    "b"  # belongs to `b`
+)
+
+a = (
+    r"a"
+    r"b"  # belongs to `b`
+)
+
+a = (
+    "a"
+    "b"
+)  # belongs to the assignment
+
+a = (((
+    "a"
+    "b"  # belongs to `b`
+)))
+
+a = (((
+    "a"
+    "b"
+) # belongs to the f-string expression
+))
+
+a = (
+    "a" "b"  # belongs to the f-string expression
+)
+
+a = (
+    "a" "b"
+    # belongs to the f-string expression
+)
+
+# There's no "right" answer if some parts are on the same line while others are on separate lines.
+# This is likely a comment for one of the last two parts but could also just be a comment for the entire f-string expression.
+# Because there's no right answer, follow what we do elsewhere and associate the comment with the outer-most node which
+# is the f-string expression.
+a = (
+    "a"
+    "b" "ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc"  # belongs to the f-string expression
+)
+
+logger.error(
+    f"Failed to run task {task} for job"  
+    f"with id {str(job.id)}" # type: ignore[union-attr]
+)
+
+a = (10 +
+     "Exception in {call_back_name} "
+     f"'{msg}'"  # belongs to binary operation
+)
+
+a = 10 + (
+    "Exception in {call_back_name} "
+    f"'{msg}'"  # belongs to f-string
+)
+
+self._attr_unique_id = (
+    f"{self._device.temperature.group_address_state}_"
+    f"{self._device.target_temperature.group_address_state}_"
+    f"{self._device.target_temperature.group_address}_"
+    f"{self._device._setpoint_shift.group_address}"  # noqa: SLF001
+)
+
+return (
+    f"Exception in {call_back_name} when handling msg on "
+    f"'{msg.topic}': '{msg.payload}'"  # type: ignore[str-bytes-safe]
+)