Hermes-agent

2026-06-14 14:30:48 -04:00
commit dac4b88b94
5058 changed files with 1884848 additions and 0 deletions
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+"""Tests for the TUI-hot-path mouse-residue suppression.
+
+The Python launcher (`hermes --tui …`) has a ~100–300ms cold-start window
+where stdin is still in cooked + echo mode. If a previous Hermes session
+left DEC mouse-tracking asserted, any mouse motion during that window
+echoes literal ``^[[<…M`` text into the user's scrollback.
+
+`_suppress_mouse_residue_early()` writes the disable sequence to stdout
+before the heavy imports so the terminal stops emitting events ASAP.
+"""
+
+from __future__ import annotations
+
+import sys
+from unittest.mock import patch
+
+# Importing the module triggers `_suppress_mouse_residue_early()` at module
+# scope. Under the test runner argv (`pytest …`) it's a no-op, but we import
+# at file scope so individual tests don't race the import side-effect with
+# their `patch("os.write")` context.
+from hermes_cli.main import _suppress_mouse_residue_early
+
+EXPECTED = (
+    b"\x1b[?1003l\x1b[?1002l\x1b[?1001l\x1b[?1000l\x1b[?9l"
+    b"\x1b[?1006l\x1b[?1005l\x1b[?1015l\x1b[?1016l\x1b[?2029l"
+)
+
+
+class TestEarlyMouseDisable:
+    def test_writes_disable_sequence_when_tui_flag_in_argv(self, monkeypatch):
+        monkeypatch.setattr(sys, "argv", ["hermes", "--tui", "-c", "abc"])
+        monkeypatch.delenv("HERMES_TUI", raising=False)
+        monkeypatch.delenv("HERMES_TUI_NO_EARLY_DISABLE", raising=False)
+
+        with patch("os.isatty", return_value=True), patch("os.write") as mock_write:
+            _suppress_mouse_residue_early()
+
+        mock_write.assert_called_once_with(1, EXPECTED)
+
+    def test_writes_disable_sequence_when_hermes_tui_env_set(self, monkeypatch):
+        monkeypatch.setattr(sys, "argv", ["hermes"])
+        monkeypatch.setenv("HERMES_TUI", "1")
+        monkeypatch.delenv("HERMES_TUI_NO_EARLY_DISABLE", raising=False)
+
+        with patch("os.isatty", return_value=True), patch("os.write") as mock_write:
+            _suppress_mouse_residue_early()
+
+        mock_write.assert_called_once_with(1, EXPECTED)
+
+    def test_no_op_on_non_tui_invocation(self, monkeypatch):
+        monkeypatch.setattr(sys, "argv", ["hermes", "--version"])
+        monkeypatch.delenv("HERMES_TUI", raising=False)
+        monkeypatch.delenv("HERMES_TUI_NO_EARLY_DISABLE", raising=False)
+
+        with patch("os.write") as mock_write:
+            _suppress_mouse_residue_early()
+
+        mock_write.assert_not_called()
+
+    def test_respects_diagnostic_escape_hatch(self, monkeypatch):
+        monkeypatch.setattr(sys, "argv", ["hermes", "--tui"])
+        monkeypatch.delenv("HERMES_TUI", raising=False)
+        monkeypatch.setenv("HERMES_TUI_NO_EARLY_DISABLE", "1")
+
+        with patch("os.write") as mock_write:
+            _suppress_mouse_residue_early()
+
+        mock_write.assert_not_called()
+
+    def test_skips_when_stdout_is_not_a_tty(self, monkeypatch):
+        # `hermes --tui … >log` or CI capture: pipe is fd 1, not a TTY. The
+        # bytes can't reach a terminal and would just pollute the log.
+        monkeypatch.setattr(sys, "argv", ["hermes", "--tui"])
+        monkeypatch.delenv("HERMES_TUI", raising=False)
+        monkeypatch.delenv("HERMES_TUI_NO_EARLY_DISABLE", raising=False)
+
+        with patch("os.isatty", return_value=False), patch("os.write") as mock_write:
+            _suppress_mouse_residue_early()
+
+        mock_write.assert_not_called()
+
+    def test_oserror_is_swallowed(self, monkeypatch):
+        monkeypatch.setattr(sys, "argv", ["hermes", "--tui"])
+        monkeypatch.delenv("HERMES_TUI", raising=False)
+        monkeypatch.delenv("HERMES_TUI_NO_EARLY_DISABLE", raising=False)
+
+        def boom(*_a, **_k):
+            raise OSError("stdout closed")
+
+        with patch("os.isatty", return_value=True), patch("os.write", side_effect=boom):
+            # Must not propagate — startup hot path can never break.
+            _suppress_mouse_residue_early()