generated from coulomb/repo-seed
The Claude Code adapter previously passed --json-schema alone. On Claude
CLI 2.1.160 that combination still emits the model's conversational
preamble on stdout while the schema-enforced structured payload ships on
a sidecar channel the adapter cannot read. Result: callers requesting
structured output got prose that fails JSON parsing downstream — exactly
the failure mode the activity-core CUST-WP-0045 daily triage canary hit
on 2026-06-01 ("Triage report generated and returned via structured
output. Key signals:..." → json.loads error at column 1).
Fix: when --json-schema is set, also pass --output-format json. The CLI
then writes a JSON envelope on stdout. The adapter unwraps it by
probing a small allowlist of known text-bearing fields (result,
result_text, content, text, output). Unknown envelope shapes fall
through to raw stdout so the operator can introspect the structure and
extend the allowlist.
The unwrap path is only triggered when --json-schema was set, so non-
schema callers keep the existing raw-stdout behavior.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
109 lines
3.6 KiB
Python
109 lines
3.6 KiB
Python
from __future__ import annotations
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from types import SimpleNamespace
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from llm_connect.claude_code import ClaudeCodeAdapter
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from llm_connect.config import LLMConfig
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from llm_connect.models import RunConfig
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def test_execute_prompt_passes_json_schema_to_claude_cli(monkeypatch):
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calls: dict[str, object] = {}
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def fake_run(cmd, input, capture_output, text, timeout): # noqa: ANN001
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calls["cmd"] = cmd
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calls["input"] = input
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calls["capture_output"] = capture_output
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calls["text"] = text
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calls["timeout"] = timeout
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return SimpleNamespace(
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returncode=0,
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stdout='{"summary":"ok","recommendations":[]}',
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stderr="",
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)
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monkeypatch.setattr("llm_connect.claude_code.subprocess.run", fake_run)
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adapter = ClaudeCodeAdapter(cli_path="/custom/claude")
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response = adapter.execute_prompt(
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"Produce a report.",
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RunConfig(
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timeout_seconds=42,
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model_params={"json_schema": {"type": "object"}},
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),
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)
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assert calls == {
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"cmd": [
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"/custom/claude",
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"--print",
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"--json-schema",
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'{"type":"object"}',
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"--output-format",
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"json",
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],
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"input": "Produce a report.",
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"capture_output": True,
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"text": True,
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"timeout": 42,
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}
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# Stdout shape that does not match any known envelope field is returned
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# verbatim so the caller can introspect and we can extend the field list.
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assert response.content == '{"summary":"ok","recommendations":[]}'
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def test_execute_prompt_unwraps_cli_json_envelope_result_field(monkeypatch):
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"""With --output-format json the CLI wraps the model payload in an
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envelope. The adapter unwraps the textual result so the caller still
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sees the model's structured-output JSON, not the envelope."""
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def fake_run(cmd, input, capture_output, text, timeout): # noqa: ANN001
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envelope = {
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"type": "result",
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"result": '{"summary":"ok","recommendations":[]}',
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"total_cost_usd": 0.001,
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}
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import json as _json
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return SimpleNamespace(
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returncode=0,
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stdout=_json.dumps(envelope),
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stderr="",
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)
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monkeypatch.setattr("llm_connect.claude_code.subprocess.run", fake_run)
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adapter = ClaudeCodeAdapter(cli_path="/custom/claude")
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response = adapter.execute_prompt(
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"Produce a report.",
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RunConfig(model_params={"json_schema": {"type": "object"}}),
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)
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assert response.content == '{"summary":"ok","recommendations":[]}'
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def test_execute_prompt_no_unwrap_without_json_schema(monkeypatch):
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"""Without --json-schema we do not pass --output-format json, so the
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envelope unwrap path stays inert and raw stdout passes through."""
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def fake_run(cmd, input, capture_output, text, timeout): # noqa: ANN001
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return SimpleNamespace(
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returncode=0,
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stdout='{"result":"this is just stdout, not an envelope"}',
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stderr="",
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)
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monkeypatch.setattr("llm_connect.claude_code.subprocess.run", fake_run)
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adapter = ClaudeCodeAdapter(cli_path="/custom/claude")
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response = adapter.execute_prompt("Plain prompt.", RunConfig())
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assert response.content == '{"result":"this is just stdout, not an envelope"}'
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def test_claude_code_adapter_prefers_env_cli_path(monkeypatch):
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monkeypatch.setenv("LLM_CONNECT_CLAUDE_CLI_PATH", "/home/me/bin/claude")
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adapter = ClaudeCodeAdapter(
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config=LLMConfig(provider="claude-code", claude_cli_path="claude")
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)
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assert adapter._cli_path == "/home/me/bin/claude"
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