Allow Distrans between completed auction bids

tests/distrans-started-auction-runtime.test.ts

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+import assert from 'node:assert/strict';
+import test from 'node:test';
+import { handLimit, viewGame } from '../game/engine';
+import {
+  actDistransPrebid, advanceDistransPrebid, createDistransPrebidFixture,
+  distransPrebidClean, distransPrebidInventory, distransPrebidPlayer as player,
+  distransPrebidPosition, finishDistransPrebidLot,
+} from './fixture-distrans-prebid';
+
+for (const advanced of [false, true]) {
+  const mode = advanced ? 'Advanced' : 'Basic';
+  void test(`${mode} Distrans between ordinary bids preserves the standing purchase and resumes that lot`, () => {
+    const f = createDistransPrebidFixture({ advanced });
+    const bidder = f.game.auction!.active;
+    let game = actDistransPrebid(f.game, bidder, { type: 'bid', amount: 1, allyPayment: 0 });
+    assert.equal(game.auction!.bidder, bidder);
+    assert.equal(game.auction!.bid, 1);
+    const recipient = game.players.find(seat => seat.id !== f.holder && seat.id !== bidder &&
+      seat.hand.length < handLimit(seat));
+    assert.ok(recipient);
+    const action = { ...f.action, target: recipient.id };
+    const offered = viewGame(game, f.holder).distrans!;
+    assert.equal(offered.blocked, null);
+    assert.ok(offered.choices.find(choice => choice.recipient === recipient.id)!.cards.some(card => card.id === f.give));
+    const original = structuredClone(game), index = game.auction!.index, turn = game.turn;
+    const soldCard = game.auction!.cards[index].id;
+    const bidderSpice = player(game, bidder).spice;
+    game = actDistransPrebid(game, f.holder, action);
+    assert.deepEqual(distransPrebidPosition(game), distransPrebidPosition(original));
+    assert.ok(player(game, recipient.id).hand.some(card => card.id === f.give));
+    assert.equal(game.discard.filter(card => card.id === f.card).length, 1);
+    assert.deepEqual(distransPrebidInventory(game), f.originalInventory);
+    game = advanceDistransPrebid(game, distransPrebidClean);
+    assert.deepEqual(game.auction, original.auction);
+    game = finishDistransPrebidLot(game, turn, index);
+    assert.ok(player(game, bidder).hand.some(card => card.id === soldCard));
+    assert.equal(player(game, bidder).spice, bidderSpice - 1);
+    assert.deepEqual(distransPrebidInventory(game), f.originalInventory);
+  });
+
+  void test(`${mode} a standing bidder retains its last hand slot through a Distrans attempt`, () => {
+    const f = createDistransPrebidFixture({ advanced, capacity: 'recipientLastSlot' });
+    const bidder = f.game.auction!.active;
+    assert.equal(bidder, f.recipient);
+    assert.equal(player(f.game, bidder).hand.length, handLimit(player(f.game, bidder)) - 1);
+    const game = actDistransPrebid(f.game, bidder, { type: 'bid', amount: 1, allyPayment: 0 });
+    const before = structuredClone(game);
+    const option = viewGame(game, f.holder).distrans!.choices.find(choice => choice.recipient === bidder)!;
+    assert.ok(!option.cards.some(card => card.id === f.give));
+    assert.throws(() => actDistransPrebid(game, f.holder, f.action));
+    assert.deepEqual(game, before);
+    assert.deepEqual(distransPrebidInventory(game), f.originalInventory);
+  });
+}