tests(params): add tests for params

tests/test_params.py

@@ -0,0 +1,37 @@
+from src.params import Parameters, parse_parameters
+
+from . import BaseTestCase
+
+
+class TestParams(BaseTestCase):
+    ENV_COUNT = 10
+
+    def test_parse_parameters(self) -> None:
+        with self.patch("os.getenv", return_value=None, count=self.ENV_COUNT):
+            params = parse_parameters(["run"])
+            self.assertEqual(params, Parameters())
+
+    def test_parse_parameters_with_implied_certificates(self) -> None:
+        with self.patch("os.getenv", return_value=None, count=self.ENV_COUNT):
+            params = parse_parameters(["--no-certificates", "--https", "run"])
+            assert params.with_certificates
+
+    def test_parse_parameters_without_implied_certificates(self) -> None:
+        with self.patch("os.getenv", return_value=None, count=self.ENV_COUNT):
+            params = parse_parameters(["--no-certificates", "--no-https", "run"])
+            assert not params.with_certificates
+
+    def test_parse_parameters_with_env_var(self) -> None:
+        with self.patch("os.getenv", return_value="127.0.0.1", count=self.ENV_COUNT):
+            params = parse_parameters(["run"])
+            self.assertEqual(params.bind, "127.0.0.1")
+
+    def test_parse_parameters_with_env_var_int(self) -> None:
+        with self.patch("os.getenv", return_value="127", count=self.ENV_COUNT):
+            params = parse_parameters(["run"])
+            self.assertEqual(params.http_port, 127)
+
+    def test_parse_parameters_with_invalid_env_var_int(self) -> None:
+        with self.patch("os.getenv", return_value="aaa", count=self.ENV_COUNT):
+            params = parse_parameters(["run"])
+            self.assertEqual(params.http_port, 80)