Update experimental features tests (#48164)

* Update experimental features tests

* Add @parallel tag

* Fix feature check

* Add more output where it doesn't generate misleading failures

* Remove deliberately failing property

* Align with #48032

* remove separate experimental data test file

* cleanup commented code

* remove failing case

* Drop wp.editSite check, as it appears to already be obsolete

test/e2e/specs/wp-gutenberg-experimental-features-spec.js

@@ -25,9 +25,7 @@ const gutenbergUser =
 const EXPERIMENTAL_FEATURES = {
 	'@wordpress/block-editor': [ '__experimentalBlock', '__experimentalInserterMenuExtension' ],
 	'@wordpress/date': [ '__experimentalGetSettings' ],
-	'@wordpress/interface': [ '__experimentalMainDashboardButton' ],
 	'@wordpress/components': [ '__experimentalNavigationBackButton' ],
-	'@wordpress/edit-site': [ '__experimentalMainDashboardButton' ],
 };
 
 /**
@@ -50,34 +48,38 @@ before( async function () {
 	driver = await driverManager.startBrowser();
 } );
 
-describe( `[${ host }] Experimental features we depend on are available (${ screenSize })`, function () {
+describe( `[${ host }] Experimental features we depend on are available (${ screenSize }) @parallel`, function () {
 	this.timeout( mochaTimeOut );
 
 	step( 'Can log in', async function () {
 		this.loginFlow = new LoginFlow( driver, gutenbergUser );
 		return await this.loginFlow.loginAndStartNewPost( null, true );
 	} );
 
-	for ( const [ packageName, features ] of Object.entries( EXPERIMENTAL_FEATURES ) ) {
-		// Removes the `@wordpress/` prefix and hyphens from package name
-		// The algorithm WP uses to convert package names to variable names is here: https://github.com/WordPress/gutenberg/blob/a03ea51e11a36d0abeecb4ce4e4cea5ffebdffc5/packages/dependency-extraction-webpack-plugin/lib/util.js#L40-L45
-		const wpGlobalName = camelCaseDash( packageName.substr( '@wordpress/'.length ) );
+	describe( 'Can find experimental package features', async function () {
+		for ( const [ packageName, features ] of Object.entries( EXPERIMENTAL_FEATURES ) ) {
+			// Removes the `@wordpress/` prefix and hyphens from package name
+			// The algorithm WP uses to convert package names to variable names is here: https://github.com/WordPress/gutenberg/blob/a03ea51e11a36d0abeecb4ce4e4cea5ffebdffc5/packages/dependency-extraction-webpack-plugin/lib/util.js#L40-L45
+			const wpGlobalName = camelCaseDash( packageName.substr( '@wordpress/'.length ) );
 
-		describe( packageName, () => {
 			step(
 				`"${ wpGlobalName }" package should be available in the global window object`,
-				async () => {
+				async function () {
 					const typeofPackage = await driver.executeScript(
-						`typeof window.wp['${ wpGlobalName }']`
+						`return typeof window.wp['${ wpGlobalName }']`
+					);
+					assert.notStrictEqual(
+						typeofPackage,
+						'undefined',
+						`${ wpGlobalName } is ${ typeofPackage }`
 					);
-					assert.notStrictEqual( typeofPackage, 'undefined'`${ wpGlobalName } is undefined` );
 				}
 			);
 
 			for ( const feature of features ) {
-				step( `${ feature } should be available in ${ packageName }`, async () => {
+				step( `${ feature } should be available in ${ packageName }`, async function () {
 					const typeofExperimentalFeature = await driver.executeScript(
-						`typeof window.wp['${ wpGlobalName }']['${ feature }']`
+						`return typeof window.wp['${ wpGlobalName }']['${ feature }']`
 					);
 					assert.notStrictEqual(
 						typeofExperimentalFeature,
@@ -86,8 +88,23 @@ describe( `[${ host }] Experimental features we depend on are available (${ scre
 					);
 				} );
 			}
-		} );
-	}
+		}
+	} );
+
+	describe( 'Experimental data we depend on is available', function () {
+		step(
+			`is iterable: wp.data.select( 'core/editor' ).getEditorSettings().__experimentalBlockPatterns`,
+			async function () {
+				const __experimentalBlockPatternsAreIterable = await driver.executeScript(
+					`return Array.isArray( window.wp.data.select( 'core/editor' ).getEditorSettings().__experimentalBlockPatterns )`
+				);
+				assert(
+					__experimentalBlockPatternsAreIterable,
+					'__experimentalBlockPatterns was not iterable, please contact #team-ganon to update premium pattern highlighting'
+				);
+			}
+		);
+	} );
 
 	after( async () => {
 		return await driver.switchTo().defaultContent();