Generate a fresh year-1111 world on Begin and persist it to the user-data database

1 files changed, 48 insertions, 0 deletions

diff --git a/tests/unit/worldgen/world.test.ts b/tests/unit/worldgen/world.test.ts
new file mode 100644
index 0000000..7f7e0ce
--- /dev/null
+++ b/tests/unit/worldgen/world.test.ts
@@ -0,0 +1,48 @@
+import { describe, expect, test } from 'vitest'
+
+import type { WorldId } from '@hollowdark/engine/entities/base'
+import { FIRST_EVER_YEAR, generateWorld } from '@hollowdark/worldgen/world'
+
+const FIXED_ID = 'test-world-1111' as WorldId
+const FIXED_SEED = 'test-seed-1111'
+const FIXED_CREATED_AT = '2026-04-22T09:00:00.000Z'
+
+describe('generateWorld', () => {
+  test('lands at year 1111, Thawing 1', () => {
+    const world = generateWorld({ id: FIXED_ID, seed: FIXED_SEED, createdAt: FIXED_CREATED_AT })
+    expect(world.currentGameTime).toEqual({
+      year: FIRST_EVER_YEAR,
+      month: 1,
+      day: 1,
+      tickOfDay: 0
+    })
+  })
+
+  test('starts with no characters, no events, no crisis', () => {
+    const world = generateWorld({ id: FIXED_ID, seed: FIXED_SEED, createdAt: FIXED_CREATED_AT })
+    expect(world.currentPlayerCharacterId).toBeNull()
+    expect(world.playedCharacterIds).toEqual([])
+    expect(world.tierOneIds).toEqual([])
+    expect(world.tierTwoIds).toEqual([])
+    expect(world.activeEventIds).toEqual([])
+    expect(world.scheduledEvents).toEqual([])
+    expect(world.crisisState.active).toBe(false)
+    expect(world.politicsByRegion.size).toBe(0)
+  })
+
+  test('seeded generation is deterministic given fixed inputs', () => {
+    const a = generateWorld({ id: FIXED_ID, seed: FIXED_SEED, createdAt: FIXED_CREATED_AT })
+    const b = generateWorld({ id: FIXED_ID, seed: FIXED_SEED, createdAt: FIXED_CREATED_AT })
+    expect(a).toEqual(b)
+  })
+
+  test('defaults the seed to the generated id when only id is provided', () => {
+    const world = generateWorld({ id: FIXED_ID, createdAt: FIXED_CREATED_AT })
+    expect(world.seed).toBe(FIXED_ID)
+  })
+
+  test('records the current schema version in settings', () => {
+    const world = generateWorld({ id: FIXED_ID, seed: FIXED_SEED, createdAt: FIXED_CREATED_AT })
+    expect(world.settings.schemaVersion).toBe(1)
+  })
+})