ai-agent-book 精选快照（<2MB 代码与文档，来自 github.com/bojieli/ai-agent-book）

chapter4/execution-tools/test_github_idempotency.py

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+"""Idempotency coverage for the Experiment 4-3 GitHub execution tool."""
+
+from __future__ import annotations
+
+import asyncio
+from datetime import datetime, timezone
+
+from external_tools import ExternalTools
+
+
+class _Approval:
+    def request_approval(self, _operation, _details):
+        return True, "bounded test"
+
+
+class _Ref:
+    def __init__(self, ref: str):
+        self.ref = ref
+
+
+class _Pull:
+    number = 605
+    html_url = "https://github.com/bojieli/ai-agent-book/pull/605"
+    title = "Experiment 4-3"
+    state = "open"
+    created_at = datetime(2026, 8, 2, tzinfo=timezone.utc)
+    head = _Ref("exp/4-3-gui-environments")
+    base = _Ref("main")
+
+
+class _Repo:
+    def get_branch(self, name):
+        return _Ref(name)
+
+    def get_pulls(self, *, state, head, base):
+        assert (state, head, base) == (
+            "open", "bojieli:exp/4-3-gui-environments", "main")
+        return [_Pull()]
+
+    def create_pull(self, **_kwargs):
+        raise AssertionError("an existing PR must be reused, not duplicated")
+
+
+class _GitHub:
+    def get_repo(self, name):
+        assert name == "bojieli/ai-agent-book"
+        return _Repo()
+
+
+def test_existing_open_pull_request_is_reused() -> None:
+    tool = ExternalTools(_Approval())
+    tool._github_client = _GitHub()
+    result = asyncio.run(tool.github_create_pr(
+        repo_name="bojieli/ai-agent-book",
+        title="Experiment 4-3",
+        body="bounded test",
+        head_branch="exp/4-3-gui-environments",
+        base_branch="main",
+    ))
+    assert result["success"] is True
+    assert result["pr_number"] == 605
+    assert result["idempotent_reuse"] is True