Core: add test for `jQuery.isPlainObject(localStorage)`

Ref gh-3045

diff --git a/test/unit/core.js b/test/unit/core.js
index f18ad2e82bed76994dab0d1d99649cad89bad4f6..a42346d007e4c314f53b36f0cfdba6d209d6fc1e 100644 (file)
--- a/test/unit/core.js
+++ b/test/unit/core.js
@@ -382,6 +382,12 @@ QUnit[ typeof Symbol === "function" ? "test" : "skip" ]( "isPlainObject(Symbol)"
        assert.equal( jQuery.isPlainObject( Object( Symbol() ) ), false, "Symbol inside an object" );
 } );
 
+QUnit.test( "isPlainObject(localStorage)", function( assert ) {
+       assert.expect( 1 );
+
+       assert.equal( jQuery.isPlainObject( localStorage ), false );
+} );
+
 QUnit[ "assign" in Object ? "test" : "skip" ]( "isPlainObject(Object.assign(...))",
        function( assert ) {
                assert.expect( 1 );