Add more guide and test case.

README.rst

@@ -15,10 +15,26 @@ Install
 Usage
 -----
 
+Call ``VietnamVehiclePlate.from_string``, passing the number string, to create ``VietnamVehiclePlate`` object.
+
 .. code-block:: python
 
     >>> from biensoxe import VietnamVehiclePlate
 
     >>> VietnamVehiclePlate.from_string('44A-112.23')
     VietnamVehiclePlate(compact='44A11223', vehicle_type=<VehicleType.DOMESTIC_AUTOMOBILE: 1>,
     series='A', order='11223', locality='44', dip_country=None)
+
+The method raises ``ValueError`` if the string could not be parsed.
+
+To format the plate number as in daily life, pass ``VietnamVehiclePlate`` to ``str``:
+
+.. code-block:: python
+
+    >>> plate = VietnamVehiclePlate.from_string('72E101130')
+
+    >>> plate
+    VietnamVehiclePlate(compact='72E101130', vehicle_type=<VehicleType.DOMESTIC_MOTORCYCLE_50_TO_175CC: 3>, series='E1', order='01130', locality='72', dip_country=None)
+
+    >>> str(plate)
+    '72-E1 011.30'

biensoxe/__init__.py

@@ -1,3 +1,3 @@
-__version__ = '0.8.0'
+__version__ = '0.8.1'
 
 from .core import VietnamVehiclePlate, VehicleType   # NOQA

biensoxe/core.py

@@ -40,7 +40,7 @@ class NonBusinessSpecialSeries(enum.Enum):
     R = 'R'   # 51R-14139
 
 
-    # This plate has yellow background
+# This plate has yellow background
 class SpecialEconomicZoneSeries(enum.Enum):
     LB = 'LB'  # Lao Bảo
     CT = 'CT'  # Cầu Treo

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "biensoxe"
-version = "0.8.0"
+version = "0.8.1"
 description = "Library to parse and validate Vietnamese vehicle plate"
 authors = ["Nguyễn Hồng Quân <[email protected]>"]
 license = "MIT"
@@ -25,7 +25,6 @@ classifiers = [
 [tool.poetry.dependencies]
 python = "^3.7"
 pydantic = "^1.0"
-dedict = "^1.0.7"
 
 [tool.poetry.dev-dependencies]
 pytest = "^3.0"

tests/test_biensoxe.py

@@ -39,6 +39,10 @@
     ('29MĐ1 94190', '29', 'MĐ1'),
 )
 
+diplomatic_data = (
+    ('80-011-NG-01', '80', 'NG', '011'),
+)
+
 
 @pytest.mark.parametrize("original_string, locality, series", automobile_data)
 def test_automobile(original_string, locality, series):
@@ -73,6 +77,12 @@ def test_high_capacity_motorcycle(original_string, locality, series):
     assert plate.series == series
 
 
+@pytest.mark.parametrize("original_string, locality, series, dip_country", diplomatic_data)
+def test_diplomatic_vehicle(original_string, locality, series, dip_country):
+    plate = VietnamVehiclePlate.from_string(original_string)
+    assert plate.dip_country == dip_country
+
+
 def test_invalid_plate_number():
     with pytest.raises(ValueError):
         VietnamVehiclePlate.from_string('XXYYZZ11')