ag-bids-mcp/tests/test_format.py

"""Markdown formatter tests — no network, just JSON-in / markdown-out."""

from __future__ import annotations

import os
import sys

sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))

from ag_bids_mcp import format as fmt


def test_fmt_best_with_winner():
    payload = {
        "commodity": "corn", "today": "2026-05-20",
        "best": {
            "source_name": "Mercer Landmark — St Henry",
            "delivery": "May 2026",
            "bid_cents": 491, "basis_cents": 33,
            "futures_contract": "ZCK26",
            "fetched_at": "2026-05-20T15:00:00+00:00",
        },
    }
    out = fmt.fmt_best("corn", payload)
    assert "Mercer Landmark — St Henry" in out
    assert "$4.9100/bu" in out
    assert "May 2026" in out
    assert "+0.33" in out


def test_fmt_best_no_winner():
    payload = {"commodity": "wheat", "today": "2026-05-20", "best": None}
    out = fmt.fmt_best("wheat", payload)
    assert "No current-month" in out
    assert "wheat" in out


def test_fmt_inputs_lime_table():
    payload = {
        "product": "lime", "count": 2,
        "rows": [
            {"source_name": "Bob's Lime Quote", "commodity": "lime",
             "display_name": "Lime", "delivery": "spot",
             "bid_cents": 42000, "commodity_kind": "fertilizer",
             "fetched_at": "2026-05-20T15:00:00+00:00"},
            {"source_name": "Coop X", "commodity": "lime",
             "display_name": "Lime", "delivery": "spot",
             "bid_cents": 45500, "commodity_kind": "fertilizer",
             "fetched_at": "2026-05-20T15:01:00+00:00"},
        ],
    }
    out = fmt.fmt_inputs(payload)
    assert "LIME prices" in out
    assert "$420.00" in out
    assert "$455.00" in out
    assert "Bob's Lime Quote" in out


def test_fmt_inputs_empty():
    out = fmt.fmt_inputs({"product": "lime", "rows": []})
    assert "No lime prices on file." in out


def test_fmt_latest_table_picks_correct_unit():
    payload = {"count": 2, "rows": [
        {"source_name": "Bambauer", "commodity": "corn",
         "display_name": "Corn", "delivery": "May 2026",
         "bid_cents": 458, "basis_cents": 2, "commodity_kind": "grain",
         "futures_contract": "ZCN26", "fetched_at": "2026-05-20T15:00:00+00:00"},
        {"source_name": "Coop X", "commodity": "lime",
         "display_name": "Lime", "delivery": "spot",
         "bid_cents": 42000, "basis_cents": None, "commodity_kind": "fertilizer",
         "futures_contract": None, "fetched_at": "2026-05-20T15:00:00+00:00"},
    ]}
    out = fmt.fmt_latest(payload)
    assert "$4.5800" in out   # grain in /bu (4 decimals)
    assert "$420.00" in out   # fertilizer in /ton (2 decimals)


def test_fmt_history_with_trend_arrow():
    payload = {
        "commodity": "corn", "days": 7,
        "rows": [
            {"source_name": "Andersons", "delivery": "May 2026",
             "bid_cents": 480, "basis_cents": 25,
             "fetched_at": "2026-05-15T15:00:00+00:00"},
            {"source_name": "Andersons", "delivery": "May 2026",
             "bid_cents": 496, "basis_cents": 30,
             "fetched_at": "2026-05-20T15:00:00+00:00"},
        ],
    }
    out = fmt.fmt_history(payload)
    assert "▲" in out
    assert "$4.8000" in out
    assert "$4.9600" in out


def test_fmt_sources_table():
    payload = {"sources": [
        {"id": 1, "name": "Test Elev", "kind": "elevator",
         "last_success_at": "2026-05-20T14:55:00+00:00",
         "consecutive_failures": 0, "last_error": None},
    ]}
    out = fmt.fmt_sources(payload)
    assert "Test Elev" in out
    assert "elevator" in out


def test_fmt_health_buckets():
    payload = {"sources": [
        {"name": "Healthy", "kind": "elevator",
         "last_success_at": "2026-05-20T14:55:00+00:00",
         "consecutive_failures": 0, "last_error": None},
        {"name": "Stale", "kind": "elevator",
         "last_success_at": None,
         "consecutive_failures": 0, "last_error": None},
        {"name": "Down", "kind": "elevator",
         "last_success_at": "2026-05-15T14:55:00+00:00",
         "consecutive_failures": 5, "last_error": "boom"},
    ]}
    out = fmt.fmt_health(payload)
    assert "Healthy: **1**" in out
    assert "Stale (never succeeded): **1**" in out
    assert "Down" in out and "**1**" in out
    # Down section lists boom
    assert "boom" in out


def test_fmt_deliveries():
    out = fmt.fmt_deliveries({"commodity": "corn",
                              "deliveries": ["May 2026", "Jul 2026"]})
    assert "- May 2026" in out
    assert "- Jul 2026" in out


def test_fmt_commodities_lists_all_six():
    out = fmt.fmt_commodities()
    for name in ("corn", "soy", "wheat", "map", "potash", "lime"):
        assert name in out.lower()


def test_fmt_summary_includes_best_for_today():
    payload = {
        "today": "2026-05-20", "prev_trading_day": "2026-05-19",
        "commodities": [
            {"symbol": "corn", "display_name": "Corn",
             "futures": {"contract": "ZC=F", "today_last_cents": 458,
                         "prev_close_cents": 455, "change_cents": 3},
             "best_for_today": {
                 "source_name": "Mercer Landmark — St Henry",
                 "delivery": "May 2026", "bid_cents": 491, "basis_cents": 33,
             }},
            {"symbol": "soy", "display_name": "Soybeans",
             "futures": {"contract": "ZS=F", "today_last_cents": 1180,
                         "prev_close_cents": 1177, "change_cents": 3},
             "best_for_today": None},
        ],
    }
    out = fmt.fmt_summary(payload)
    assert "Corn" in out and "Soybeans" in out
    assert "Mercer Landmark — St Henry" in out
    assert "$4.5800" in out  # corn last
    assert "No current-month local bid posted" in out  # soy fallback