test: add coverage edge case

Author: Charley

tests/lib/rules/await-async-utils.test.ts

@@ -294,6 +294,23 @@ ruleTester.run(RULE_NAME, rule, {
         test('edge case for no innermost function scope', () => {
           const foo = waitFor
         })
+      `,
+		},
+		{
+			// edge case for coverage: CallExpressions without deepest identifiers
+			code: `
+        import { waitFor } from '${testingFramework}';
+        test('coverage test for CallExpressions without identifiers', () => {
+          const asyncUtil = waitFor
+
+          // These CallExpressions have no deepest identifier:
+          const funcs = [() => console.log('test')]
+          const obj = { [Symbol.iterator]: () => 'symbol' }
+
+          funcs[0]()
+          obj[Symbol.iterator]()
+          (function() { return 'iife' })()
+        });
       `,
 		},
 		...ASYNC_UTILS.map((asyncUtil) => ({