feat: bootstrap walking skeleton

src/content/__tests__/schema.test.ts

@@ -0,0 +1,47 @@
+import { describe, expect, it } from 'vitest';
+import { buildContent } from '../schema';
+
+const validResources = [{ id: 'gold', name: 'Gold' }];
+const validActions = [
+  { id: 'forage', name: 'Forage', durationMs: 3000, yields: { resourceId: 'gold', amount: 1 } },
+];
+
+describe('buildContent()', () => {
+  it('validates definitions and indexes them by id', () => {
+    const content = buildContent({ resources: validResources, actions: validActions });
+    expect(content.resourcesById.gold.name).toBe('Gold');
+    expect(content.actionsById.forage.durationMs).toBe(3000);
+  });
+
+  it('applies the startAmount default of 0', () => {
+    const content = buildContent({ resources: validResources, actions: validActions });
+    expect(content.resourcesById.gold.startAmount).toBe(0);
+  });
+
+  it('rejects an action that yields an unknown resource', () => {
+    const actions = [
+      {
+        id: 'forage',
+        name: 'Forage',
+        durationMs: 3000,
+        yields: { resourceId: 'ghost', amount: 1 },
+      },
+    ];
+    expect(() => buildContent({ resources: validResources, actions })).toThrow(/unknown resource/i);
+  });
+
+  it('rejects duplicate resource ids', () => {
+    const resources = [
+      { id: 'gold', name: 'Gold' },
+      { id: 'gold', name: 'Gold Again' },
+    ];
+    expect(() => buildContent({ resources, actions: validActions })).toThrow(/duplicate/i);
+  });
+
+  it('rejects a structurally invalid definition', () => {
+    const actions = [
+      { id: 'forage', name: 'Forage', durationMs: -1, yields: { resourceId: 'gold', amount: 1 } },
+    ];
+    expect(() => buildContent({ resources: validResources, actions })).toThrow();
+  });
+});