diff --git a/test.py b/test.py
new file mode 100644
index 0000000..0a50c4f
--- /dev/null
+++ b/test.py
@@ -0,0 +1,123 @@
+import unittest
+from typing import List
+
+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')
+
+    @unittest.expectedFailure
+    def test__required_argument_missing(self):
+
+        @argclass
+        class A:
+            arg1: str
+
+        A.parse_args([])
+
+    @unittest.expectedFailure
+    def test__required_argument_wrong_given(self):
+
+        @argclass
+        class A:
+            arg1: str
+
+        A.parse_args(['--arg2', 'hello'])
+
+    def test__optional_argument_missing(self):
+
+        @argclass
+        class A:
+            arg2: str = 'world'
+
+        assert A.parse_args([]) == A(arg2='world')
+
+    def test__optional_argument_given(self):
+
+        @argclass
+        class A:
+            arg2: str = 'world'
+
+        assert A.parse_args(['--arg2', 'welt']) == A(arg2='welt')
+
+    @unittest.expectedFailure
+    def test__optional_argument_wrong_given(self):
+
+        @argclass
+        class A:
+            arg2: str = 'world'
+
+        A.parse_args(['--arg3', 'welt'])
+
+
+    def test__boolean_true(self):
+
+        @argclass
+        class A:
+            arg3: bool
+
+        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)
+
+    def test__int(self):
+
+        @argclass
+        class A:
+            arg4: int
+
+        assert A.parse_args(['--arg4', '42']) == A(arg4=42)
+
+    @unittest.expectedFailure
+    def test__int_malformed(self):
+
+        @argclass
+        class A:
+            arg4: int
+
+        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'])
+
+
+    def test__list_str(self):
+
+        @argclass
+        class A:
+            arg5: List[str]
+
+        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])
+
+
+if __name__ == '__main__':
+    unittest.main()