hermes-agent/tests/hermes_cli/test_diff_command.py
Teknium 6b81590c55
test: prune low-value tests suite-wide (wave 1) — 46,820 → 28,106 test functions
Systematic prune per AGENTS.md test policy, one pass over every major
test tree (gateway, hermes_cli, tools, agent, run_agent, plugins, cli,
cron, tui_gateway, honcho/openviking, root-level):

- DELETE: source-reading tests (read_text/getsource on prod files),
  change-detector tests (exact catalog counts, model-name snapshots,
  config version literals), mock-echo tests (assert a mock returns what
  it was told), assertion-free/trivial tests, near-duplicate
  parametrizations (boundaries + one representative kept), async/sync
  twin duplicates, cosmetic within-file variations.
- KEEP (mandatory): security/redaction/approval guards, message-role
  alternation invariants, prompt-caching/deterministic-call-id
  invariants, issue-number regression tests (deduped), E2E tests.
- 6 test files deleted outright (script-style/no-assert or fully
  redundant); conftest.py, fakes/, fixtures/ untouched.
- tests/acp/conftest.py added: autouse fixture stubs the live
  models.dev/GitHub/Copilot/Anthropic inventory fetches that ACP server
  tests performed on every session create — test_server.py 147s → 3.4s,
  and the tests are now genuinely hermetic.
- Sleep-based slowness shrunk where safe (codex_ttfb_watchdog,
  compression_concurrent_fork, etc.); no wall-clock assertion tightened.

Verification: full hermetic suite via scripts/run_tests.sh —
2439 files, 31,130 tests passed, 0 failed, 0 flaky retries, 315s wall
(baseline: 583s wall, 13,564s subprocess CPU).
2026-07-29 13:10:23 -07:00

112 lines
3.1 KiB
Python

"""Tests for the CLI ``/diff`` command handler.
``/diff`` shows git changes in the working directory (unstaged + untracked by
default; ``staged``/``all`` modes) and ``/diff session`` shows the cumulative
checkpoint-baseline diff of everything Hermes changed. These drive the mixin
handler against real git repos (default modes) and a stubbed checkpoint
manager (session mode), asserting rendering, ``--stat``, and graceful
degradation.
"""
import contextlib
import io
import shutil
import subprocess
import pytest
from hermes_cli.cli_commands_mixin import CLICommandsMixin
requires_git = pytest.mark.skipif(
shutil.which("git") is None, reason="git required"
)
class _Console:
def __init__(self, sink):
self._sink = sink
def print(self, obj, **kwargs):
self._sink.write(getattr(obj, "plain", str(obj)) + "\n")
class _Mgr:
def __init__(self, result, enabled=True):
self.enabled = enabled
self._result = result
self.calls = []
def session_diff(self, cwd):
self.calls.append(cwd)
return self._result
class _Agent:
def __init__(self, mgr):
self._checkpoint_mgr = mgr
class _Stub(CLICommandsMixin):
def __init__(self, agent=None):
self.agent = agent
def _run(stub, command):
buf = io.StringIO()
stub.console = _Console(buf)
with contextlib.redirect_stdout(buf):
stub._handle_diff_command(command)
return buf.getvalue()
def _git(repo, *args):
subprocess.run(["git", *args], cwd=repo, check=True, capture_output=True,
env={"GIT_AUTHOR_NAME": "t", "GIT_AUTHOR_EMAIL": "t@t",
"GIT_COMMITTER_NAME": "t", "GIT_COMMITTER_EMAIL": "t@t",
"HOME": str(repo),
"PATH": __import__("os").environ["PATH"]})
@pytest.fixture()
def repo(tmp_path, monkeypatch):
d = tmp_path / "repo"
d.mkdir()
_git(d, "init", "-q")
(d / "main.py").write_text("print('hello')\n")
_git(d, "add", "-A")
_git(d, "commit", "-q", "-m", "init")
monkeypatch.setenv("TERMINAL_CWD", str(d))
return d
# ---------------------------------------------------------------------------
# Default (working-tree) mode — real git
# ---------------------------------------------------------------------------
@requires_git
def test_diff_clean_repo_reports_no_changes(repo):
out = _run(_Stub(), "/diff")
assert "No changes" in out
@requires_git
def test_diff_non_git_directory_is_graceful(tmp_path, monkeypatch):
plain = tmp_path / "plain"
plain.mkdir()
monkeypatch.setenv("TERMINAL_CWD", str(plain))
out = _run(_Stub(), "/diff")
assert "not a git repository" in out.lower()
# ---------------------------------------------------------------------------
# Session mode — stubbed checkpoint manager
# ---------------------------------------------------------------------------
def test_diff_session_empty_reports_no_changes(tmp_path, monkeypatch):
monkeypatch.setenv("TERMINAL_CWD", str(tmp_path))
mgr = _Mgr({"success": True, "stat": "", "diff": "", "empty": True})
out = _run(_Stub(_Agent(mgr)), "/diff session")
assert "No changes" in out