Show input modes in the keyboard indicator

test/shell.d/input-indicator-test.sh

@@ -0,0 +1,42 @@
+#!/bin/bash
+
+set -euo pipefail
+source "$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)/base-test.sh"
+
+OMARCHY_PATH="$ROOT" /usr/bin/python - <<'PY'
+import importlib.util
+import os
+from unittest.mock import patch
+
+spec = importlib.util.spec_from_file_location("indicator", os.environ["OMARCHY_PATH"] + "/default/input-methods/indicator.py")
+indicator = importlib.util.module_from_spec(spec)
+spec.loader.exec_module(indicator)
+
+with patch.object(indicator, "call", side_effect=[
+  ("Default",),
+  ("us", [("keyboard-us", ""), ("mozc", ""), ("mozc", "")]),
+  ("mozc", "Mozc", "", "fcitx_mozc", "あ", "ja", "mozc", True, "", {}),
+]):
+  state = indicator.snapshot(None)
+  assert state == {"methods": ["keyboard-us", "mozc"], "current": "mozc", "name": "Mozc", "label": "あ", "language": "ja"}
+print("ok - live state deduplicates modes and reads language independently of the engine label")
+
+def check_cycle(current, methods, expected):
+  state = {"current": current, "methods": methods}
+  with patch.object(indicator, "snapshot", return_value=state), patch.object(indicator, "call") as call:
+    indicator.cycle(None)
+    if expected is None:
+      call.assert_not_called()
+    else:
+      assert call.call_args.args[1] == "SetCurrentIM"
+      assert call.call_args.args[2].unpack() == (expected,)
+
+check_cycle("keyboard-us", ["keyboard-us", "mozc"], "mozc")
+check_cycle("mozc", ["keyboard-us", "mozc"], "keyboard-us")
+check_cycle("mozc", ["keyboard-us", "mozc", "hangul"], "hangul")
+check_cycle("hangul", ["keyboard-us", "mozc", "hangul"], "keyboard-us")
+check_cycle("keyboard-us", ["keyboard-us"], None)
+check_cycle("removed", ["keyboard-us", "mozc"], None)
+check_cycle("", [], None)
+print("ok - input cycling covers Latin, multiple engines, single modes, and stale contexts")
+PY