Add datetime provider for bn_BD (#1518)

* Add bn_bd package in date_time with test.

* Remove extra trailing spaces.

faker/providers/date_time/bn_BD/__init__.py

@@ -0,0 +1,37 @@
+from .. import Provider as DateTimeProvider
+
+
+class Provider(DateTimeProvider):
+
+    DAY_NAMES = {
+        "0": "রবিবার",
+        "1": "সোমবার",
+        "2": "মঙ্গলবার",
+        "3": "বুধবার",
+        "4": "বৃহস্পতিবার",
+        "5": "শুক্রবার",
+        "6": "শনিবার",
+    }
+
+    MONTH_NAMES = {
+        "01": "জানুয়ারি",
+        "02": "ফেব্রুয়ারি",
+        "03": "মার্চ",
+        "04": "এপ্রিল",
+        "05": "মে",
+        "06": "জুন",
+        "07": "জুলাই",
+        "08": "আগস্ট",
+        "09": "সেপ্টেম্বর",
+        "10": "অক্টোবর",
+        "11": "নভেম্বর",
+        "12": "ডিসেম্বর",
+    }
+
+    def day_of_week(self):
+        day = self.date("%w")
+        return self.DAY_NAMES[day]
+
+    def month_name(self):
+        month = self.month()
+        return self.MONTH_NAMES[month]

tests/providers/test_date_time.py

@@ -18,6 +18,7 @@
 from faker.providers.date_time import change_year
 from faker.providers.date_time.ar_AA import Provider as ArProvider
 from faker.providers.date_time.ar_EG import Provider as EgProvider
+from faker.providers.date_time.bn_BD import Provider as BnBdProvider
 from faker.providers.date_time.cs_CZ import Provider as CsCzProvider
 from faker.providers.date_time.de_AT import Provider as DeAtProvider
 from faker.providers.date_time.de_DE import Provider as DeDeProvider
@@ -1147,3 +1148,18 @@ def test_day(self):
     def test_month(self):
         month = self.fake.month_name()
         assert month in RoRoProvider.MONTH_NAMES.values()
+
+
+class TestBnBd(unittest.TestCase):
+
+    def setUp(self):
+        self.fake = Faker('bn_BD')
+        Faker.seed(0)
+
+    def test_day(self):
+        day = self.fake.day_of_week()
+        assert day in BnBdProvider.DAY_NAMES.values()
+
+    def test_month(self):
+        month = self.fake.month_name()
+        assert month in BnBdProvider.MONTH_NAMES.values()