test: add closed-library assertions for getFunctions and getSymbols

Signed-off-by: anshikakalpana <anshikajain196872@gmail.com>
PR-URL: #63769
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Paolo Insogna <paolo@cowtech.it>

Author: Anshikakalpana

test/ffi/test-ffi-dynamic-library.js

@@ -268,6 +268,8 @@ test('closed libraries reject subsequent operations', () => {
   assert.throws(() => functions.add_i32(1, 2), /Library is closed/);
   assert.throws(() => lib.getFunction('add_i32', fixtureSymbols.add_i32), /Library is closed/);
   assert.throws(() => lib.getSymbol('add_i32'), /Library is closed/);
+  assert.throws(() => lib.getFunctions({ add_i32: fixtureSymbols.add_i32 }), /Library is closed/);
+  assert.throws(() => lib.getSymbols(), /Library is closed/);
 });
 
 test('optimized fast calls reject calls after the library is closed', () => {