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70 lines
2.5 KiB
Python
70 lines
2.5 KiB
Python
"""Tests for hermes -z --usage-file (per-run JSON usage report)."""
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import json
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from hermes_cli.oneshot import _write_usage_file
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def _result(**overrides):
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base = {
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"estimated_cost_usd": 0.1234,
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"cost_status": "estimated",
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"cost_source": "pricing-table",
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"input_tokens": 1000,
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"output_tokens": 200,
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"cache_read_tokens": 800,
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"cache_write_tokens": 0,
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"reasoning_tokens": 50,
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"total_tokens": 1250,
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"api_calls": 3,
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"model": "openai/gpt-5.5",
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"provider": "openrouter",
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"session_id": "abc123",
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"completed": True,
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"failed": False,
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}
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base.update(overrides)
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return base
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class TestWriteUsageFile:
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def test_writes_report_with_cost_and_tokens(self, tmp_path):
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path = tmp_path / "usage.json"
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_write_usage_file(str(path), _result())
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report = json.loads(path.read_text())
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assert report["estimated_cost_usd"] == 0.1234
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assert report["input_tokens"] == 1000
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assert report["output_tokens"] == 200
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assert report["model"] == "openai/gpt-5.5"
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assert report["api_calls"] == 3
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assert report["failed"] is False
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assert "failure" not in report
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def test_none_path_is_noop(self, tmp_path):
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# Must not raise and must not create a report file.
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_write_usage_file(None, _result())
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assert not (tmp_path / "usage.json").exists()
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def test_failure_marks_failed_and_records_message(self, tmp_path):
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path = tmp_path / "usage.json"
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_write_usage_file(str(path), {}, failure="boom")
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report = json.loads(path.read_text())
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assert report["failed"] is True
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assert report["failure"] == "boom"
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# Missing result fields serialize as null, not KeyError.
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assert report["estimated_cost_usd"] is None
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def test_creates_parent_directories(self, tmp_path):
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path = tmp_path / "nested" / "dir" / "usage.json"
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_write_usage_file(str(path), _result())
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assert json.loads(path.read_text())["total_tokens"] == 1250
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def test_unwritable_path_never_raises(self):
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# Root-owned path — the write must be swallowed, not raised.
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_write_usage_file("/proc/definitely/not/writable/usage.json", _result())
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def test_result_failed_flag_carries_through(self, tmp_path):
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path = tmp_path / "usage.json"
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_write_usage_file(str(path), _result(failed=True))
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assert json.loads(path.read_text())["failed"] is True
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