Add three-member short alliance prototype

tests/coalition-three-short-runtime.test.tsx

@@ -0,0 +1,99 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import { createElement } from 'react';
+import { renderToStaticMarkup } from 'react-dom/server';
+import { CoalitionNexus, coalitionNexusOptions } from '../components/coalition-nexus';
+import { botActions } from '../game/bots';
+import { DIFFICULTIES } from '../game/bot-profiles';
+import { coalitionOf, emptyCoalitionState } from '../game/coalition-alliance';
+import { applyAction, joinGame, newPlayer, viewGame, type Game } from '../game/engine';
+import { quoteVictory } from '../game/victory-quote';
+import { advanceShortAlliance, shortAllianceCollection, shortAllianceLobby, type ShortAllianceStep } from './fixture-short-alliance-victory';
+
+/** Real four-seat Basic deal, first turn, normal worm and Nexus; the empty
+ * preview ledger and unopened worm order are the only staged inputs here. */
+function nexus(): Game {
+  let game = shortAllianceLobby();
+  joinGame(game, newPlayer('ha', 'Harkonnen', 'harkonnen'));
+  for (const player of game.players) game = applyAction(game, player.id, {type:'ready'});
+  game = applyAction(game, 'at', {type:'start'});
+  const actions: ShortAllianceStep[] = [];
+  game = advanceShortAlliance(game, state => state.status === 'playing' && state.turn === 2 && state.phase === 0, actions);
+  const index = game.spiceDeck.findIndex(card => 'worm' in card && !card.greatMaker && !card.suppressed && !card.thumper);
+  assert.ok(index >= 0);
+  game.spiceDeck.unshift(game.spiceDeck.splice(index, 1)[0]);
+  game = advanceShortAlliance(game, state => state.nexus && !state.spiceWindow && !state.spiceResolution &&
+    !state.response && !state.decision && !state.truthtrance && !state.phaseOpening, actions);
+  assert.ok(game.players.every(player => !player.ally));
+  game.coalitionState = emptyCoalitionState('three-short');
+  game = applyAction(game, 'at', {type:'alliance', target:'em'});
+  return applyAction(game, 'em', {type:'alliance', target:'at'});
+}
+
+function accept(game: Game, actor: string): Game {
+  const offer = game.coalitionState!.proposal; assert.ok(offer);
+  return applyAction(game, actor, {type:'coalitionAnswer', event:offer.event, nexus:offer.nexus,
+    turn:offer.turn, accept:true, expectedRevision:game.coalitionState!.revision});
+}
+
+void test('three-short pair invites a third with unanimous native consent and each bot can propose', () => {
+  const game = nexus();
+  const pair = coalitionOf(game.players, game.coalitionState, 'at'); assert.ok(pair);
+  assert.deepEqual(new Set(pair.members), new Set(['at','em']));
+  const controls = viewGame(game, 'gu').coalitionNexus; assert.ok(controls);
+  assert.equal(controls.variant, 'three-short');
+  assert.deepEqual(coalitionNexusOptions(controls).invitations.map(row => row.entrant), ['gu']);
+  const markup = renderToStaticMarkup(createElement(CoalitionNexus, {view:controls, onIntent(){}}));
+  assert.match(markup, /up to three members and need three strongholds/);
+  assert.match(markup, /Ask to join Atreides, Emperor/);
+  for (const difficulty of DIFFICULTIES) {
+    const view = viewGame(game, 'gu'); view.players.find(player => player.id === 'gu')!.bot = difficulty;
+    const action = botActions(view).find(row => row.type === 'coalitionPropose');
+    assert.ok(action, difficulty);
+    let pending = applyAction(game, 'gu', action);
+    assert.deepEqual(pending.coalitionState!.proposal!.approvals, ['gu']);
+    assert.equal(viewGame(pending, 'em').coalitionNexus!.proposal!.entrant, 'gu');
+    pending = accept(pending, 'at');
+    assert.deepEqual(new Set(coalitionOf(pending.players, pending.coalitionState, 'at')!.members), new Set(['at','em']));
+    pending = accept(pending, 'em');
+    assert.deepEqual(new Set(coalitionOf(pending.players, pending.coalitionState, 'at')!.members), new Set(['at','em','gu']));
+    const full = viewGame(pending, 'ha').coalitionNexus; assert.ok(full);
+    assert.deepEqual(coalitionNexusOptions(full).invitations, []);
+    const before = structuredClone(pending);
+    assert.throws(() => applyAction(pending, 'ha', {type:'coalitionPropose', groupId:pair.id,
+      entrant:'ha', expectedRevision:pending.coalitionState!.revision}));
+    assert.deepEqual(pending, before);
+  }
+});
+
+void test('three-short pair and triple share the three-stronghold target and native win', () => {
+  const pair = nexus();
+  const group = coalitionOf(pair.players, pair.coalitionState, 'at'); assert.ok(group);
+  let triple = applyAction(pair, 'at', {type:'coalitionPropose', groupId:group.id, entrant:'gu',
+    expectedRevision:pair.coalitionState!.revision});
+  triple = accept(triple, 'em');
+  triple = accept(triple, 'gu');
+  for (const [source, members] of [[pair, ['at','em']], [triple, ['at','em','gu']]] as const) {
+    let closed = source;
+    for (const player of source.players) {
+      if (closed.nexus && !closed.ready.includes(player.id))
+        closed = applyAction(closed, player.id, {type:'ready'});
+    }
+    closed = advanceShortAlliance(closed, state => !state.nexus && state.phase >= 2, []);
+    // Preserve the actual alliance; only the Collection boundary and original
+    // physical forces are staged by the common stronghold fixture.
+    const game = shortAllianceCollection(closed);
+    const row = viewGame(game, 'at').victoryProgress.find(progress => progress.player === 'at'); assert.ok(row);
+    assert.equal(row.target, 3);
+    assert.equal(row.qualifies, true);
+    assert.equal(row.strongholds.length, 3);
+    assert.deepEqual(new Set(quoteVictory(game).winner), new Set(members));
+    let current = game;
+    for (const player of game.players) {
+      if (current.status === 'finished') break;
+      current = applyAction(current, player.id, {type:'ready'});
+    }
+    assert.equal(current.status, 'finished');
+    assert.deepEqual(new Set(current.winner), new Set(members));
+  }
+});