Add black to CI/CD (#1)

Reviewed-on: https://git.deguo.duckdns.org/pavel/argclass/pulls/1
Co-authored-by: Pavel Lutskov <pavel.lutskov@gmail.com>
Co-committed-by: Pavel Lutskov <pavel.lutskov@gmail.com>

test.py

@@ -6,17 +6,14 @@ from argclass import argclass
 
 
 class TestArgClass(unittest.TestCase):
-
     def test__required_argument(self):
-
         @argclass
         class A:
             arg1: str
 
-        assert A.parse_args(['--arg1', 'hello']) == A(arg1='hello')
+        assert A.parse_args(["--arg1", "hello"]) == A(arg1="hello")
 
     def test__required_argument_missing(self):
-
         @argclass
         class A:
             arg1: str
@@ -24,101 +21,86 @@ class TestArgClass(unittest.TestCase):
         self.assertRaises(SystemExit, A.parse_args, [])
 
     def test__required_argument_wrong_given(self):
-
         @argclass
         class A:
             arg1: str
 
-        self.assertRaises(SystemExit, A.parse_args, ['--arg2', 'hello'])
+        self.assertRaises(SystemExit, A.parse_args, ["--arg2", "hello"])
 
     def test__optional_argument_missing(self):
-
         @argclass
         class A:
-            arg2: str = 'world'
+            arg2: str = "world"
 
-        assert A.parse_args([]) == A(arg2='world')
+        assert A.parse_args([]) == A(arg2="world")
 
     def test__optional_argument_given(self):
-
         @argclass
         class A:
-            arg2: str = 'world'
+            arg2: str = "world"
 
-        assert A.parse_args(['--arg2', 'welt']) == A(arg2='welt')
+        assert A.parse_args(["--arg2", "welt"]) == A(arg2="welt")
 
     def test__optional_argument_wrong_given(self):
-
         @argclass
         class A:
-            arg2: str = 'world'
+            arg2: str = "world"
 
-        self.assertRaises(SystemExit, A.parse_args, ['--arg3', 'welt'])
+        self.assertRaises(SystemExit, A.parse_args, ["--arg3", "welt"])
 
     def test__boolean_true(self):
-
         @argclass
         class A:
             arg3: bool
 
-        assert A.parse_args(['--arg3']) == A(arg3=True)
+        assert A.parse_args(["--arg3"]) == A(arg3=True)
 
     def test__boolean_false(self):
-
         @argclass
         class A:
             arg3: bool
 
-        assert A.parse_args(['--no-arg3']) == A(arg3=False)
+        assert A.parse_args(["--no-arg3"]) == A(arg3=False)
 
     def test__int(self):
-
         @argclass
         class A:
             arg4: int
 
-        assert A.parse_args(['--arg4', '42']) == A(arg4=42)
+        assert A.parse_args(["--arg4", "42"]) == A(arg4=42)
 
     def test__int_malformed(self):
-
         @argclass
         class A:
             arg4: int
 
-        self.assertRaises(SystemExit, A.parse_args, ['--arg4', '4e2'])
+        self.assertRaises(SystemExit, A.parse_args, ["--arg4", "4e2"])
 
     def test__list(self):
-
         @argclass
         class A:
             arg5: List
 
-        assert (
-            A.parse_args(['--arg5', 'hello', 'world'])
-            ==
-            A(arg5=['hello', 'world'])
+        assert A.parse_args(["--arg5", "hello", "world"]) == A(
+            arg5=["hello", "world"]
         )
 
     def test__list_str(self):
-
         @argclass
         class A:
             arg5: List[str]
 
-        assert (
-            A.parse_args(['--arg5', 'hello', 'world'])
-            ==
-            A(arg5=['hello', 'world'])
+        assert A.parse_args(["--arg5", "hello", "world"]) == A(
+            arg5=["hello", "world"]
         )
 
     def test__list_int(self):
-
         @argclass
         class A:
             arg5: List[int]
 
-        assert A.parse_args(['--arg5', '23', '42']) == A(arg5=[23, 42])
+        assert A.parse_args(["--arg5", "23", "42"]) == A(arg5=[23, 42])
 
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     unittest.main()