Load sorter choice from project config

ghstack-source-id: 03940aab1ad9b6cb6e0ca062f9b32604303faa68
Pull Request resolved: #193

ufmt/config.py

@@ -8,7 +8,7 @@
 import tomlkit
 from trailrunner import project_root
 
-from .types import Formatter, UfmtConfig
+from .types import Formatter, Sorter, UfmtConfig
 
 LOG = logging.getLogger(__name__)
 
@@ -35,6 +35,7 @@ def load_config(path: Optional[Path] = None, root: Optional[Path] = None) -> Ufm
             raise ValueError(f"{config_path}: excludes must be a list of strings")
 
         formatter = Formatter(config.pop("formatter", UfmtConfig.formatter))
+        sorter = Sorter(config.pop("sorter", Sorter.usort))
 
         if config:
             LOG.warning("%s: unknown values ignored: %r", config_path, sorted(config))
@@ -44,6 +45,7 @@ def load_config(path: Optional[Path] = None, root: Optional[Path] = None) -> Ufm
             pyproject_path=config_path,
             excludes=excludes,
             formatter=formatter,
+            sorter=sorter,
         )
 
     return UfmtConfig()

ufmt/tests/config.py

@@ -177,6 +177,18 @@ def test_invalid_config(self, log_mock):
             ):
                 load_config(self.td / "fake.py")
 
+        with self.subTest("unsupported sorter"):
+            self.pyproject.write_text(
+                dedent(
+                    """
+                    [tool.ufmt]
+                    sorter = "garbage"
+                    """
+                )
+            )
+            with self.assertRaisesRegex(ValueError, "'garbage' is not a valid Sorter"):
+                load_config(self.td / "fake.py")
+
     @patch("ufmt.config.LOG")
     def test_config_excludes(self, log_mock):
         with self.subTest("missing"):