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src/components/rpg-entry/rpgEntryWorldPresentation.test.ts

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+import { expect, test } from 'vitest';
+
+import {
+  formatPlatformWorkDisplayName,
+  formatPlatformWorkDisplayTags,
+  formatPlatformWorldTime,
+} from './rpgEntryWorldPresentation';
+
+test('formatPlatformWorldTime formats backend seconds timestamp text as date', () => {
+  expect(formatPlatformWorldTime('1777110165.990127Z')).toBe('2026-04-25');
+});
+
+test('formatPlatformWorldTime keeps full year for iso date strings', () => {
+  expect(formatPlatformWorldTime('2026-04-25T12:00:00.000Z')).toBe(
+    '2026-04-25',
+  );
+});
+
+test('formatPlatformWorldTime uses utc calendar date for zulu time', () => {
+  expect(formatPlatformWorldTime('2026-04-25T00:30:00.000Z')).toBe(
+    '2026-04-25',
+  );
+});
+
+test('formatPlatformWorldTime keeps fallback text for invalid values', () => {
+  expect(formatPlatformWorldTime(null)).toBe('未发布');
+  expect(formatPlatformWorldTime('not-a-date')).toBe('not-a-date');
+});
+
+test('platform work display text limits names and tags by character count', () => {
+  expect(formatPlatformWorkDisplayName('热门高分拼图超长标题')).toBe(
+    '热门高分拼图超长',
+  );
+  expect(formatPlatformWorkDisplayTags(['超长机关标签', '星桥', '超长机关标签'])).toEqual([
+    '超长机关',
+    '星桥',
+  ]);
+});