Components: Try alternative approach for spying portal render

components/popover/test/index.js

@@ -235,6 +235,8 @@ describe( 'Popover', () => {
 		} );
 
 		it( 'should render into provider context', () => {
+			const element = require( '@wordpress/element' );
+			jest.spyOn( element, 'createPortal' );
 			const target = document.createElement( 'div' );
 
 			mount(
@@ -243,7 +245,7 @@ describe( 'Popover', () => {
 				</PopoverProvider>
 			);
 
-			expect( target.childElementCount ).toBe( 1 );
+			expect( element.createPortal.mock.calls[ 0 ][ 1 ] ).toBe( target );
 		} );
 	} );
 } );

test/setup-test-framework.js

@@ -3,19 +3,7 @@ require( 'core-js/modules/es7.object.values' );
 
 // TODO: This is only necessary so long as we're running React 15.x in the Node
 // context, since createPortal is only available in 16.x
-jest.mock( '@wordpress/element', () => {
-	const element = require.requireActual( '@wordpress/element' );
-
-	return {
-		...element,
-		createPortal: ( ...args ) => {
-			/* eslint-disable no-console */
-			const consoleWarn = console.error;
-			// Shhhh...
-			console.error = () => {};
-			element.render( ...args );
-			console.error = consoleWarn;
-			/* eslint-enable no-console */
-		},
-	};
-} );
+jest.mock( '@wordpress/element', () => ( {
+	...require.requireActual( '@wordpress/element' ),
+	createPortal: ( x ) => x,
+} ) );