feat: 审查修复一轮——sync 解引用软链技能/防 CLAUDE.md 崩溃/init 建 agent-tasks；upgrade SHA256 校验+收尾容错；新增 xiaohe switch 回滚；uninstall --all 扩到 ~/.metabot ~/.mytoolkit；下载路径改 xiaohe-agent

tests/test_switch.py

@@ -0,0 +1,80 @@
+"""Tests for myagents.commands.switch."""
+
+from pathlib import Path
+
+import pytest
+from click.testing import CliRunner
+
+from myagents.commands import switch as sw_mod
+
+
+@pytest.fixture()
+def fake_home(tmp_path: Path, monkeypatch: pytest.MonkeyPatch) -> Path:
+    home = tmp_path / "home"
+    home.mkdir()
+    monkeypatch.setattr(Path, "home", staticmethod(lambda: home))
+    monkeypatch.setattr(sw_mod, "_install_tools", lambda runtime: [])
+    workspace = tmp_path / "ws"
+    workspace.mkdir()
+    monkeypatch.setattr(sw_mod, "get_workspace_root", lambda create=False: workspace)
+    monkeypatch.setattr(
+        sw_mod,
+        "sync_workspace",
+        lambda ws: {"added": [], "updated": [], "skipped": [], "removed": []},
+    )
+    return home
+
+
+def _make_versions(home: Path, versions: tuple[str, ...], current: str) -> None:
+    root = home / ".xiaohe" / "runtime"
+    for name in versions:
+        (root / name).mkdir(parents=True)
+    (root / "current").symlink_to(root / current)
+
+
+class TestSwitch:
+    def test_switches_current_and_reinstalls(
+        self, fake_home: Path, monkeypatch: pytest.MonkeyPatch
+    ) -> None:
+        _make_versions(fake_home, ("v1", "v2"), "v2")
+        installed: list[str] = []
+        monkeypatch.setattr(
+            sw_mod, "_install_tools", lambda rt: installed.append(rt.name) or []
+        )
+        result = CliRunner().invoke(sw_mod.switch_cmd, ["v1", "--yes"])
+        assert result.exit_code == 0, result.output
+        assert "Switched: v2 -> v1" in result.output
+        current = fake_home / ".xiaohe" / "runtime" / "current"
+        assert current.resolve().name == "v1"
+        assert installed == ["v1"]
+
+    def test_unknown_version_errors(self, fake_home: Path) -> None:
+        _make_versions(fake_home, ("v1", "v2"), "v2")
+        result = CliRunner().invoke(sw_mod.switch_cmd, ["v9", "--yes"])
+        assert result.exit_code != 0
+        assert "not installed" in result.output
+
+    def test_already_current_is_noop(self, fake_home: Path) -> None:
+        _make_versions(fake_home, ("v1", "v2"), "v2")
+        result = CliRunner().invoke(sw_mod.switch_cmd, ["v2", "--yes"])
+        assert result.exit_code == 0
+        assert "Already on v2" in result.output
+
+    def test_interactive_list_and_prompt(self, fake_home: Path) -> None:
+        _make_versions(fake_home, ("v1", "v2"), "v2")
+        result = CliRunner().invoke(sw_mod.switch_cmd, [], input="v1\ny\n")
+        assert result.exit_code == 0, result.output
+        assert "v2" in result.output and "(current)" in result.output
+        assert (fake_home / ".xiaohe" / "runtime" / "current").resolve().name == "v1"
+
+    def test_cancelled_keeps_current(self, fake_home: Path) -> None:
+        _make_versions(fake_home, ("v1", "v2"), "v2")
+        result = CliRunner().invoke(sw_mod.switch_cmd, ["v1"], input="n\n")
+        assert result.exit_code == 0
+        assert "Cancelled" in result.output
+        assert (fake_home / ".xiaohe" / "runtime" / "current").resolve().name == "v2"
+
+    def test_no_versions_errors(self, fake_home: Path) -> None:
+        result = CliRunner().invoke(sw_mod.switch_cmd, ["v1", "--yes"])
+        assert result.exit_code != 0
+        assert "No installed runtime" in result.output