From 6e33189f3b6f8dfd08b7735e5b8acd84272c7c76 Mon Sep 17 00:00:00 2001
From: Huyen Nguyen <25715018+huyenltnguyen@users.noreply.github.com>
Date: Sat, 25 Oct 2025 12:38:51 +0700
Subject: [PATCH] test(e2e): add tests for interactive editor toggle (#63043)

---
 .../components/interactive-editor.tsx         |   5 +-
 .../src/templates/Challenges/generic/show.tsx |   5 +-
 e2e/interactive-editor.spec.ts                | 181 ++++++++++++++++++
 3 files changed, 186 insertions(+), 5 deletions(-)
 create mode 100644 e2e/interactive-editor.spec.ts

diff --git a/client/src/templates/Challenges/components/interactive-editor.tsx b/client/src/templates/Challenges/components/interactive-editor.tsx
index 12c836ddba4..fdca6a1e1bd 100644
--- a/client/src/templates/Challenges/components/interactive-editor.tsx
+++ b/client/src/templates/Challenges/components/interactive-editor.tsx
@@ -53,7 +53,10 @@ const InteractiveEditor = ({ files }: Props) => {
   };
 
   return (
-    <div className='interactive-editor-wrapper'>
+    <div
+      className='interactive-editor-wrapper'
+      data-playwright-test-label='sp-interactive-editor'
+    >
       <Sandpack
         template={
           got('tsx')
diff --git a/client/src/templates/Challenges/generic/show.tsx b/client/src/templates/Challenges/generic/show.tsx
index caeddf64b9e..0e3e09e276a 100644
--- a/client/src/templates/Challenges/generic/show.tsx
+++ b/client/src/templates/Challenges/generic/show.tsx
@@ -242,10 +242,7 @@ const ShowGeneric = ({
         <Helmet
           title={`${blockNameTitle} | ${t('learn.learn')} | freeCodeCamp.org`}
         />
-        <Container
-          fluid
-          className={`generic-challenge-container${hasInteractiveEditor ? ' has-action-row' : ''}`}
-        >
+        <Container fluid>
           {hasInteractiveEditor && (
             <ActionRow
               hasInteractiveEditor={hasInteractiveEditor}
diff --git a/e2e/interactive-editor.spec.ts b/e2e/interactive-editor.spec.ts
new file mode 100644
index 00000000000..95a4d57e1ae
--- /dev/null
+++ b/e2e/interactive-editor.spec.ts
@@ -0,0 +1,181 @@
+import { test, expect } from '@playwright/test';
+
+interface InteractiveFile {
+  contents: string;
+  ext: string;
+  name: string;
+  contentsHtml: string;
+}
+
+interface Nodule {
+  type: 'paragraph' | 'interactiveEditor';
+  data: string | InteractiveFile[];
+}
+
+interface PageData {
+  result: {
+    data: {
+      challengeNode: {
+        challenge: {
+          title: string;
+          nodules: Nodule[];
+        };
+      };
+    };
+  };
+}
+
+const challengePath =
+  '/learn/full-stack-developer/lecture-what-is-css/what-are-some-default-browser-styles-applied-to-html';
+
+const challengeTitle = 'Test Challenge Title';
+
+test.describe('Interactive Editor', () => {
+  test('should render paragraph nodules as text and not show the interactive editor toggle', async ({
+    page
+  }) => {
+    await page.route(
+      `**/page-data${challengePath}/page-data.json`,
+      async route => {
+        const response = await route.fetch();
+        const body = await response.text();
+        const pageData = JSON.parse(body) as PageData;
+
+        pageData.result.data.challengeNode.challenge.title = challengeTitle;
+        pageData.result.data.challengeNode.challenge.nodules = [
+          {
+            type: 'paragraph',
+            data: '<p>This is a plain text paragraph.</p>'
+          },
+          {
+            type: 'paragraph',
+            data: '<p>Another paragraph with <code>code</code> in it.</p>'
+          }
+        ];
+
+        await route.fulfill({
+          contentType: 'application/json',
+          body: JSON.stringify(pageData)
+        });
+      }
+    );
+
+    await page.goto(challengePath);
+
+    await expect(
+      page.getByRole('heading', { name: challengeTitle })
+    ).toBeVisible();
+
+    await expect(
+      page.getByText('This is a plain text paragraph.')
+    ).toBeVisible();
+    await expect(
+      page.getByText('Another paragraph with code in it.')
+    ).toBeVisible();
+
+    await expect(
+      page.getByRole('button', { name: /interactive editor/i })
+    ).not.toBeVisible();
+  });
+
+  test('should toggle between interactive editor and static code view when Interactive Editor button is clicked', async ({
+    page
+  }) => {
+    await page.route(
+      `**/page-data${challengePath}/page-data.json`,
+      async route => {
+        const response = await route.fetch();
+        const body = await response.text();
+        const pageData = JSON.parse(body) as PageData;
+
+        pageData.result.data.challengeNode.challenge.title = challengeTitle;
+        pageData.result.data.challengeNode.challenge.nodules = [
+          {
+            type: 'paragraph',
+            data: '<p>Introduction paragraph.</p>'
+          },
+          {
+            type: 'interactiveEditor',
+            data: [
+              {
+                contents: 'console.log("Toggle test");',
+                ext: 'js',
+                name: 'script-1',
+                contentsHtml:
+                  '<pre><code class="language-javascript">console.log("Toggle test");</code></pre>'
+              },
+              {
+                contents: '<div>HTML content</div>',
+                ext: 'html',
+                name: 'index-1',
+                contentsHtml:
+                  '<pre><code class="language-html">&lt;div&gt;HTML content&lt;/div&gt;</code></pre>'
+              }
+            ]
+          },
+          {
+            type: 'paragraph',
+            data: '<p>Final paragraph.</p>'
+          }
+        ];
+
+        await route.fulfill({
+          contentType: 'application/json',
+          body: JSON.stringify(pageData)
+        });
+      }
+    );
+
+    await page.goto(challengePath);
+
+    await expect(
+      page.getByRole('heading', { name: challengeTitle })
+    ).toBeVisible();
+    await expect(page.getByText('Introduction paragraph.')).toBeVisible();
+    await expect(page.getByText('Final paragraph.')).toBeVisible();
+
+    // Initially, interactive editor should be hidden, static code view should be visible
+    await expect(page.getByTestId('sp-interactive-editor')).not.toBeVisible();
+    await expect(
+      page
+        .locator('pre code')
+        .filter({ hasText: 'console.log("Toggle test");' })
+    ).toHaveCount(1);
+    await expect(
+      page.locator('pre code').filter({ hasText: '<div>HTML content</div>' })
+    ).toHaveCount(1);
+    await expect(
+      page.evaluate(() => localStorage.getItem('showInteractiveEditor'))
+    ).resolves.toBe(null);
+
+    // Click the toggle button
+    const toggleButton = page.getByRole('button', {
+      name: /interactive editor/i
+    });
+    await toggleButton.click();
+
+    // Interactive editor should be visible, static code view hidden
+    await expect(page.getByTestId('sp-interactive-editor')).toBeVisible();
+    await expect(page.locator('pre code')).not.toBeVisible();
+    await expect(
+      page.evaluate(() => localStorage.getItem('showInteractiveEditor'))
+    ).resolves.toBe('true');
+
+    // Click the toggle button again
+    await toggleButton.click();
+
+    // Interactive editor should be hidden, static code view visible again
+    await expect(page.getByTestId('sp-interactive-editor')).not.toBeVisible();
+    await expect(
+      page
+        .locator('pre code')
+        .filter({ hasText: 'console.log("Toggle test");' })
+    ).toBeVisible();
+    await expect(
+      page.locator('pre code').filter({ hasText: '<div>HTML content</div>' })
+    ).toBeVisible();
+    await expect(
+      page.evaluate(() => localStorage.getItem('showInteractiveEditor'))
+    ).resolves.toBe('false');
+  });
+});