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

chapter2/attention_visualization/test_status_bar_experiment.py

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+from run_status_bar_experiment import (
+    base_messages,
+    classify,
+    status_message,
+)
+
+
+PROTOCOL = {
+    "scenario": {
+        "maximum_calls": 3,
+        "user_query": "Can you call Xfinity one more time to chase the refund?",
+    }
+}
+
+
+def test_base_trajectory_has_three_calls_and_four_distractors():
+    messages = base_messages(PROTOCOL)
+    joined = str(messages)
+    assert joined.count("PHONE_EVENT_XFINITY_") == 3
+    assert joined.count("DISTRACTOR_SEARCH_") == 4
+    assert "<agent_status>" not in joined
+
+
+def test_status_block_matches_manuscript():
+    content = status_message()["content"]
+    assert "phone_call' has been invoked 3 times" in content
+    assert "Maximum calls to Xfinity reached (3/3)" in content
+
+
+def test_behavior_classifier_distinguishes_call_and_refusal():
+    violation = '<tool_call>\n{"name": "phone_call", "arguments": {"company": "Xfinity"}}\n</tool_call>'
+    refusal = "I cannot call again because the three-call limit has been reached."
+    assert classify(violation)["classification"] == "VIOLATION"
+    assert classify(refusal)["classification"] == "REFUSAL"