第一步老樣子就是來新增測試檔案。◝( •ω• )◟
e2e\components\wrapper-physics.spec.ts
import { test, expect } from '@playwright/test';
test.beforeEach(async ({ page }) => {
  await page.goto('http://localhost:5173/components/wrapper-physics/');
});
test('頁面必須存在(title 不可出現 404)', async ({ page }) => {
  const title = await page.title();
  expect(title).not.toContain('404');
});
先將元件加上 title,方便定位。
docs\components\wrapper-physics\index.md
...
<basic-usage title="basic-usage" />
...
<body-property title="body-property"/>
...
<adjust-gravity title="adjust-gravity"/>
...
執行腳本開始運行 e2e 測試。
npm run test:e2e-ui
測試元素是否存在,按下開始元素會移動,重置會回歸原位
e2e\components\text-characters-transition.spec.ts
...
test.describe('基本用法', () => {
  test('必須有文字為「基本用法」的 h3', async ({ page }) => {
    const h3Els = page.locator('h3');
    const target = h3Els.getByText('基本用法');
    await expect(target).toBeVisible();
  });
  test('必須存在「開始、重置、安安安、安安、安」文字的元素', async ({ page }) => {
    const section = page.getByTitle('basic-usage');
    await expect(section).toBeVisible();
    const list = ['開始', '重置', '安安安', '安安', '安'];
    for (const text of list) {
      const target = section.getByText(text, { exact: true });
      await expect(target).toBeVisible();
    }
  });
  test('按下開始元素會移動,重置會回歸原位', async ({ page }) => {
    const section = page.getByTitle('basic-usage');
    await expect(section).toBeVisible();
    const startBtn = section.getByText('開始');
    const resetBtn = section.getByText('重置');
    const list = ['開始', '重置', '安安安', '安安', '安'];
    const targets = list.map((text) => section.getByText(text, { exact: true }));
    for (const target of targets) {
      await expect(target).toHaveAttribute(
        'style', 'transform: translate(0px, 0px) rotate(0deg);'
      );
    }
    await startBtn.click();
    // 等待 500ms
    await page.waitForTimeout(500);
    for (const target of targets) {
      await expect(target).not.toHaveAttribute(
        'style', 'transform: translate(0px, 0px) rotate(0deg);'
      );
    }
    await resetBtn.click();
    for (const target of targets) {
      await expect(target).toHaveAttribute(
        'style', 'transform: translate(0px, 0px) rotate(0deg);'
      );
    }
  });
})
相當順利。ヾ(◍'౪`◍)ノ゙

isStatic 以外的物體會移動。
e2e\components\text-characters-transition.spec.ts
...
test.describe('物體性質', () => {
  test('必須有文字為「物體性質」的 h3', async ({ page }) => {
    const h3Els = page.locator('h3');
    const target = h3Els.getByText('物體性質');
    await expect(target).toBeVisible();
  });
  test('開始後「靜、止」以外的物體會移動', async ({ page }) => {
    const section = page.getByTitle('body-property');
    await expect(section).toBeVisible();
    const startBtn = section.getByText('開始');
    await startBtn.click();
    await page.waitForTimeout(500);
    const staticList = ['靜', '止'];
    const list = ['追', '趕', '慢', '跑', '跳', '碰'];
    const staticTargets = staticList.map((text) => section.getByText(text, { exact: true }));
    const targets = list.map((text) => section.getByText(text, { exact: true }));
    for (const target of staticTargets) {
      await expect(target).toBeVisible();
      await expect(target).toHaveAttribute(
        'style', 'transform: translate(0px, 0px) rotate(0deg);'
      );
    }
    for (const target of targets) {
      await expect(target).toBeVisible();
      await expect(target).not.toHaveAttribute(
        'style', 'transform: translate(0px, 0px) rotate(0deg);'
      );
    }
  });
})
成功!◝( •ω• )◟

這個案例稍微複雜一點,不過也是很好理解。ヽ(●`∀´●)ノ
e2e\components\text-characters-transition.spec.ts
...
test.describe('調整重力', () => {
  test('必須有文字為「調整重力」的 h3', async ({ page }) => {
    const h3Els = page.locator('h3');
    const target = h3Els.getByText('調整重力');
    await expect(target).toBeVisible();
  });
  test('物體會朝重力方向移動', async ({ page }) => {
    const section = page.getByTitle('adjust-gravity');
    await expect(section).toBeVisible();
    await page.waitForTimeout(500);
    const targets = section.getByText('🐟', { exact: true });
    // 重力預設往下,物理物件會往下移動
    for (const target of await targets.all()) {
      const attr = await target.getAttribute('style');
      if (!attr) {
        throw new Error('attr is null');
      }
      // 取出 translateY 部分數值
      const translateY = attr.match(/transform: translate\(0px, (.*?)px\)/)?.[1];
      if (!translateY) {
        throw new Error('translateY is null');
      }
      expect(parseFloat(translateY)).toBeGreaterThan(0);
    }
    // 調整重力往上
    const ySlider = section.getByRole('slider').nth(1);
    ySlider.fill('-2');
    await page.waitForTimeout(500);
    // 物體會往上移動
    for (const target of await targets.all()) {
      const attr = await target.getAttribute('style');
      if (!attr) {
        throw new Error('attr is null');
      }
      // 取出 translateY 部分數值
      const translateY = attr.match(/transform: translate\(0px, (.*?)px\)/)?.[1];
      if (!translateY) {
        throw new Error('translateY is null');
      }
      expect(parseFloat(translateY)).toBeLessThan(0);
    }
  });
})
順利通過!(´,,•ω•,,)

以上我們完成基本 e2e 測試了,大家可以想想還有甚麼更細緻的案例。
歡迎大家自由發揮!( ´ ▽ ` )ノ
以上程式碼已同步至 GitLab,大家可以前往下載: