revert changes

test/e2e/specs/editor/plugins/wp-editor-meta-box.spec.js

@@ -0,0 +1,57 @@
+/**
+ * WordPress dependencies
+ */
+const { test, expect } = require( '@wordpress/e2e-test-utils-playwright' );
+
+test.describe( 'WP Editor Meta Boxes', () => {
+	test.beforeAll( async ( { requestUtils } ) => {
+		await requestUtils.activatePlugin(
+			'gutenberg-test-plugin-wp-editor-meta-box'
+		);
+	} );
+
+	test.afterAll( async ( { requestUtils } ) => {
+		await requestUtils.deactivatePlugin(
+			'gutenberg-test-plugin-wp-editor-meta-box'
+		);
+	} );
+
+	test( 'Should save the changes', async ( { admin, editor, page } ) => {
+		await admin.createNewPost();
+		// Add title to enable valid non-empty post save.
+		await page.type( '.editor-post-title__input', 'Hello Meta' );
+
+		// Type something.
+		await page.click( '#test_tinymce_id-html' );
+		await page.click( '#test_tinymce_id' );
+		await page.keyboard.type( 'Typing in a metabox' );
+		await page.type( '#test_tinymce_id-html', 'Typing in a metabox' );
+		await page.click( '#test_tinymce_id-tmce' );
+
+		await editor.publishPost();
+
+		await expect( page.locator( '.edit-post-layout' ) ).toBeVisible();
+
+		await page.click( '#test_tinymce_id-html' );
+		const content = await page.$eval(
+			'#test_tinymce_id',
+			( textarea ) => textarea.value
+		);
+
+		/*
+		 * `content` may or may not contain the <p> tags depending on hasWpautop value in this line:
+		 * https://github.com/WordPress/wordpress-develop/blob/2382765afa36e10bf3c74420024ad4e85763a47c/src/js/_enqueues/vendor/tinymce/plugins/wordpress/plugin.js#L15
+		 *
+		 * Now, for the purposes of this e2e test we explicitly set wpautop to true in the test plugin:
+		 * https://github.com/WordPress/gutenberg/blob/3da717b8d0ac7d7821fc6d0475695ccf3ae2829f/packages/e2e-tests/plugins/wp-editor-metabox.php#L36
+		 *
+		 * If this test randomly fails because of the actual value being wrapped in <p> like <p>Typing in a metabox</p>, it means that
+		 * hasWpautop has been errorneously set to false in the line above. You may want to check:
+		 * * Is window.wp.editor.autop a function? It should be one since https://github.com/WordPress/gutenberg/pull/33228
+		 * * Is wpautop still true in the second link mentioned in this comment?
+		 *
+		 * For more context, see https://github.com/WordPress/gutenberg/pull/33228/files#r666897885
+		 */
+		expect( content ).toBe( 'Typing in a metabox' );
+	} );
+} );