Allow exception modules to have any special characters (#84)

AUTHORS.rst

@@ -10,4 +10,5 @@ Contributors
 
 * Anthony Sottile - https://github.com/asottile
 * Łukasz Skarżyński - https://github.com/skarzi
-* Daniel Jurczak - https://github.com/danieljurczak
+* Daniel Jurczak - https://github.com/danieljurczak
+* Ben Warren - https://github.com/bwarren2

CHANGELOG.rst

@@ -89,3 +89,4 @@ latest
 * Upgrade Grimp to 1.2.2.
 * Add SetField
 * Use a SetField for ignore_imports options
+* Add support for non `\w` characters in import exceptions

src/importlinter/domain/fields.py

@@ -1,5 +1,4 @@
 import abc
-import re
 from typing import Generic, Iterable, List, Set, TypeVar, Union
 
 from importlinter.domain.imports import DirectImport, Module
@@ -117,12 +116,9 @@ class DirectImportField(Field):
     Expects raw data in the form: "mypackage.foo.importer -> mypackage.bar.imported".
     """
 
-    DIRECT_IMPORT_STRING_REGEX = re.compile(r"^([\w\.]+) -> ([\w\.]+)$")
-
     def parse(self, raw_data: Union[str, List]) -> DirectImport:
         string = StringField().parse(raw_data)
-        match = self.DIRECT_IMPORT_STRING_REGEX.match(string)
-        if not match:
+        importer, _, imported = string.partition(" -> ")
+        if not (importer and imported):
             raise ValidationError('Must be in the form "package.importer -> package.imported".')
-        importer, imported = match.groups()
         return DirectImport(importer=Module(importer), imported=Module(imported))

tests/unit/domain/test_fields.py

@@ -74,6 +74,10 @@ class TestModuleField(BaseFieldTest):
             "mypackage.foo - mypackage.bar",
             ValidationError('Must be in the form "package.importer -> package.imported".'),
         ),
+        (
+            "my-package.foo -> my-package.bar",
+            DirectImport(importer=Module("my-package.foo"), imported=Module("my-package.bar")),
+        ),
     ),
 )
 class TestDirectImportField(BaseFieldTest):