Import AITURK IDE 1.0.0-beta.1 from Hermes 63279301; preserve MIT license

tests/hermes_cli/test_diff_command.py

@@ -0,0 +1,112 @@
+"""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
+
+