41 lines
1.1 KiB
Python
41 lines
1.1 KiB
Python
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import pytest
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from llm_connect.fx import DEFAULT_EUR_PER_USD, FxRate, resolve_fx_rate
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def test_resolve_fx_prefers_explicit_rate():
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rate = resolve_fx_rate(0.85)
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assert rate is not None
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assert rate.eur_per_usd == pytest.approx(0.85)
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assert rate.source == "explicit"
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assert rate.usd_to_eur(10.0) == pytest.approx(8.5)
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def test_resolve_fx_reads_env(monkeypatch):
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monkeypatch.setenv("LLM_CONNECT_EUR_PER_USD", "0.9")
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rate = resolve_fx_rate()
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assert rate is not None
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assert rate.eur_per_usd == pytest.approx(0.9)
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assert rate.source == "env:LLM_CONNECT_EUR_PER_USD"
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def test_resolve_fx_falls_back_to_snapshot():
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rate = resolve_fx_rate(env={})
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assert rate is not None
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assert rate.eur_per_usd == pytest.approx(DEFAULT_EUR_PER_USD)
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assert rate.source.startswith("snapshot:")
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def test_invalid_env_rate_raises():
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with pytest.raises(ValueError, match="LLM_CONNECT_EUR_PER_USD"):
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resolve_fx_rate(env={"LLM_CONNECT_EUR_PER_USD": "0"})
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def test_fx_rate_rejects_non_positive():
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with pytest.raises(ValueError, match="eur_per_usd"):
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FxRate(eur_per_usd=-1, source="x")
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