Add vi-VN automotive provider (#1639)

* Add vi-VN automotive provider

* Update test_automotive.py

* Update test_automotive.py

Co-authored-by: Flavio Curella <89607+fcurella@users.noreply.github.com>

faker/providers/automotive/vi_VN/__init__.py

@@ -0,0 +1,24 @@
+import re
+
+from .. import Provider as AutomotiveProvider
+
+
+class Provider(AutomotiveProvider):
+    """Implement automotive provider for ``vi_VN`` locale.
+
+    Sources:
+
+    - https://en.wikipedia.org/wiki/Vehicle_registration_plates_of_Vietnam
+    """
+
+    license_formats = ("##?-#####",)
+    ascii_uppercase_vietnamese = "ABCDĐEFGHKLMNPSTUVXYZ"
+
+    def license_plate(self) -> str:
+        """Generate a license plate."""
+        temp = re.sub(
+            r"\?",
+            lambda x: self.random_element(self.ascii_uppercase_vietnamese),
+            self.random_element(self.license_formats),
+        )
+        return self.numerify(temp)

tests/providers/test_automotive.py

@@ -20,10 +20,16 @@ def test_license_plate(self, faker, num_samples):
         for _ in range(num_samples):
             license_plate = faker.license_plate()
             match = self.license_plate_pattern.fullmatch(license_plate)
-            assert match
+            assert match is not None
             self.perform_extra_checks(license_plate, match)
 
 
+class TestArBh(_SimpleAutomotiveTestMixin):
+    """Test ar_BH automotive provider methods"""
+
+    license_plate_pattern: Pattern = re.compile(r"\d{6}")
+
+
 class TestAzAz(_SimpleAutomotiveTestMixin):
     """Test az_AZ automotive provider methods"""
 
@@ -282,7 +288,7 @@ def test_plate_motorbike(self, faker, num_samples):
             assert self.license_plate_motorbike_pattern.match(plate)
 
 
-class TestArBh(_SimpleAutomotiveTestMixin):
-    """Test ar_BH automotive provider methods"""
+class TestViVn(_SimpleAutomotiveTestMixin):
+    """Test vi_VN automotive provider methods"""
 
-    license_plate_pattern: Pattern = re.compile(r"\d{6}")
+    license_plate_pattern: Pattern = re.compile(r"\d{2}[ABCDĐEFGHKLMNPSTUVXYZ]-\d{5}")