E2E Tests: Adding helpers to install/activate/deactivate and remove p…

…lugins (#5906)

test/e2e/support/plugins.js

@@ -0,0 +1,60 @@
+/**
+ * Node dependencies
+ */
+import { visitAdmin } from './utils';
+
+/**
+ * Install a plugin from the WP.org repository.
+ *
+ * @param {string} slug        Plugin slug.
+ * @param {string?} searchTerm If the plugin is not findable by its slug use an alternative term to search.
+ */
+export async function installPlugin( slug, searchTerm ) {
+	await visitAdmin( 'plugin-install.php?s=' + encodeURIComponent( searchTerm || slug ) + '&tab=search&type=term' );
+	await page.click( '.install-now[data-slug="' + slug + '"]' );
+	await page.waitForSelector( '.activate-now[data-slug="' + slug + '"]' );
+}
+
+/**
+ * Activates an installed plugin.
+ *
+ * @param {string} slug Plugin slug.
+ */
+export async function activatePlugin( slug ) {
+	await visitAdmin( 'plugins.php' );
+	await page.click( 'tr[data-slug="' + slug + '"] .activate a' );
+	await page.waitForSelector( 'tr[data-slug="' + slug + '"] .deactivate a' );
+}
+
+/**
+ * Dectivates an active plugin.
+ *
+ * @param {string} slug Plugin slug.
+ */
+export async function deactivatePlugin( slug ) {
+	await visitAdmin( 'plugins.php' );
+	await page.click( 'tr[data-slug="' + slug + '"] .deactivate a' );
+	await page.waitForSelector( 'tr[data-slug="' + slug + '"] .delete a' );
+}
+
+/**
+ * Uninstall a plugin.
+ *
+ * @param {string} slug Plugin slug.
+ */
+export async function uninstallPlugin( slug ) {
+	await visitAdmin( 'plugins.php' );
+	const confirmPromise = new Promise( resolve => {
+		const confirmDialog = ( dialog ) => {
+			dialog.accept();
+			page.removeListener( 'dialog', confirmDialog );
+			resolve();
+		};
+		page.on( 'dialog', confirmDialog );
+	} );
+	await Promise.all( [
+		confirmPromise,
+		page.click( 'tr[data-slug="' + slug + '"] .delete a' ),
+	] );
+	await page.waitForSelector( 'tr[data-slug="' + slug + '"].deleted' );
+}