Add transport adapters and candidates

tests/test_adapters.py

@@ -0,0 +1,30 @@
+from __future__ import annotations
+
+import unittest
+
+from ampbrowser.adapters import ADAPTERS, adapter_for
+from ampbrowser.transports import inspect_transport
+
+
+class AdaptersTest(unittest.TestCase):
+    def test_known_adapters_are_registered(self) -> None:
+        self.assertEqual({"tor", "i2p", "reticulum", "gemini"}, set(ADAPTERS))
+
+    def test_gemini_adapter_is_builtin_ready(self) -> None:
+        status = inspect_transport("gemini")
+
+        self.assertIsNotNone(status)
+        self.assertTrue(status.installed)
+        self.assertTrue(status.running)
+        self.assertTrue(status.adoptable)
+
+    def test_tor_adapter_setup_steps_respect_ownership_language(self) -> None:
+        adapter = adapter_for("tor")
+
+        self.assertIsNotNone(adapter)
+        self.assertEqual("stop only AMPB-owned Tor daemon", adapter.stop_policy)
+        self.assertEqual(("install Tor provider", "start managed Tor daemon", "wait for socks5://127.0.0.1:9050"), adapter.setup_steps(installed=False, platform="desktop"))
+
+
+if __name__ == "__main__":
+    unittest.main()