feat: add gateway install scope prompts (#1374)

tests/hermes_cli/test_gateway.py

@@ -115,3 +115,57 @@ def test_systemd_install_system_scope_skips_linger_and_uses_systemctl(monkeypatc
     assert helper_calls == []
     assert "Configured to run as: alice" not in out  # generated test unit has no User= line
     assert "System service installed and enabled" in out
+
+
+def test_conflicting_systemd_units_warning(monkeypatch, tmp_path, capsys):
+    user_unit = tmp_path / "user" / "hermes-gateway.service"
+    system_unit = tmp_path / "system" / "hermes-gateway.service"
+    user_unit.parent.mkdir(parents=True)
+    system_unit.parent.mkdir(parents=True)
+    user_unit.write_text("[Unit]\n", encoding="utf-8")
+    system_unit.write_text("[Unit]\n", encoding="utf-8")
+
+    monkeypatch.setattr(
+        gateway,
+        "get_systemd_unit_path",
+        lambda system=False: system_unit if system else user_unit,
+    )
+
+    gateway.print_systemd_scope_conflict_warning()
+
+    out = capsys.readouterr().out
+    assert "Both user and system gateway services are installed" in out
+    assert "hermes gateway uninstall" in out
+    assert "--system" in out
+
+
+def test_install_linux_gateway_from_setup_system_choice_without_root_prints_followup(monkeypatch, capsys):
+    monkeypatch.setattr(gateway, "prompt_linux_gateway_install_scope", lambda: "system")
+    monkeypatch.setattr(gateway.os, "geteuid", lambda: 1000)
+    monkeypatch.setattr(gateway, "_default_system_service_user", lambda: "alice")
+    monkeypatch.setattr(gateway, "systemd_install", lambda *args, **kwargs: (_ for _ in ()).throw(AssertionError("should not install")))
+
+    scope, did_install = gateway.install_linux_gateway_from_setup(force=False)
+
+    out = capsys.readouterr().out
+    assert (scope, did_install) == ("system", False)
+    assert "sudo hermes gateway install --system --run-as-user alice" in out
+    assert "sudo hermes gateway start --system" in out
+
+
+def test_install_linux_gateway_from_setup_system_choice_as_root_installs(monkeypatch):
+    monkeypatch.setattr(gateway, "prompt_linux_gateway_install_scope", lambda: "system")
+    monkeypatch.setattr(gateway.os, "geteuid", lambda: 0)
+    monkeypatch.setattr(gateway, "_default_system_service_user", lambda: "alice")
+
+    calls = []
+    monkeypatch.setattr(
+        gateway,
+        "systemd_install",
+        lambda force=False, system=False, run_as_user=None: calls.append((force, system, run_as_user)),
+    )
+
+    scope, did_install = gateway.install_linux_gateway_from_setup(force=True)
+
+    assert (scope, did_install) == ("system", True)
+    assert calls == [(True, True, "alice")]

tests/hermes_cli/test_gateway_service.py

@@ -78,6 +78,31 @@ class TestGatewayStopCleanup:
         assert kill_calls == [False]
 
 
+class TestGatewayServiceDetection:
+    def test_is_service_running_checks_system_scope_when_user_scope_is_inactive(self, monkeypatch):
+        user_unit = SimpleNamespace(exists=lambda: True)
+        system_unit = SimpleNamespace(exists=lambda: True)
+
+        monkeypatch.setattr(gateway_cli, "is_linux", lambda: True)
+        monkeypatch.setattr(gateway_cli, "is_macos", lambda: False)
+        monkeypatch.setattr(
+            gateway_cli,
+            "get_systemd_unit_path",
+            lambda system=False: system_unit if system else user_unit,
+        )
+
+        def fake_run(cmd, capture_output=True, text=True, **kwargs):
+            if cmd == ["systemctl", "--user", "is-active", gateway_cli.SERVICE_NAME]:
+                return SimpleNamespace(returncode=0, stdout="inactive\n", stderr="")
+            if cmd == ["systemctl", "is-active", gateway_cli.SERVICE_NAME]:
+                return SimpleNamespace(returncode=0, stdout="active\n", stderr="")
+            raise AssertionError(f"Unexpected command: {cmd}")
+
+        monkeypatch.setattr(gateway_cli.subprocess, "run", fake_run)
+
+        assert gateway_cli._is_service_running() is True
+
+
 class TestGatewaySystemServiceRouting:
     def test_gateway_install_passes_system_flags(self, monkeypatch):
         monkeypatch.setattr(gateway_cli, "is_linux", lambda: True)