test: add arrow functions to test-util-inspect

Even though arrow functions and ES5 anonymous functions are technically the same for util.js, it won't hurt to test both. The same goes for async functions. PR-URL: #11781 Reviewed-By: James M Snell <[email protected]> Reviewed-By: Rich Trott <[email protected]> Reviewed-By: Michaël Zasso <[email protected]> Reviewed-By: Daniel Bevenius <[email protected]> Reviewed-By: Luigi Pinca <[email protected]> Reviewed-By: Michael Dawson <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Timothy Gu <[email protected]>

Author: aqrln

test/parallel/test-util-inspect.js

@@ -9,7 +9,9 @@ assert.strictEqual(util.inspect(false), 'false');
 assert.strictEqual(util.inspect(''),"''");
 assert.strictEqual(util.inspect('hello'),"'hello'");
 assert.strictEqual(util.inspect(function(){}),'[Function]');
+assert.strictEqual(util.inspect(()=>{}),'[Function]');
 assert.strictEqual(util.inspect(asyncfunction(){}),'[AsyncFunction]');
+assert.strictEqual(util.inspect(async()=>{}),'[AsyncFunction]');
 assert.strictEqual(util.inspect(function*(){}),'[Function]');
 assert.strictEqual(util.inspect(undefined),'undefined');
 assert.strictEqual(util.inspect(null),'null');
@@ -30,8 +32,11 @@ assert.strictEqual(util.inspect([1, [2, 3]]), '[ 1, [ 2, 3 ] ]');
 assert.strictEqual(util.inspect({}),'{}');
 assert.strictEqual(util.inspect({a: 1}),'{a: 1 }');
 assert.strictEqual(util.inspect({a: function(){}}),'{a: [Function: a] }');
+assert.strictEqual(util.inspect({a: ()=>{}}),'{a: [Function: a] }');
 assert.strictEqual(util.inspect({a: asyncfunction(){}}),
 '{a: [AsyncFunction: a] }');
+assert.strictEqual(util.inspect({a: async()=>{}}),
+'{a: [AsyncFunction: a] }');
 assert.strictEqual(util.inspect({a: function*(){}}),
 '{a: [Function: a] }');
 assert.strictEqual(util.inspect({a: 1,b: 2}),'{a: 1, b: 2 }');