sync some tests between global and pure versions

Author: zloirock

tests/unit-global/es.regexp.escape.js

@@ -21,6 +21,11 @@ QUnit.test('RegExp.escape', assert => {
     'whitespaces and control',
   );
 
+  assert.same(escape('💩'), '💩', '💩');
+  assert.same(escape('\uD83D'), '\\ud83d', '\\ud83d');
+  assert.same(escape('\uDCA9'), '\\udca9', '\\udca9');
+  assert.same(escape('\uDCA9\uD83D'), '\\udca9\\ud83d', '\\udca9\\ud83d');
+
   assert.throws(() => escape(42), TypeError, 'throws on non-string #1');
   assert.throws(() => escape({}), TypeError, 'throws on non-string #2');
 

tests/unit-pure/es.array.find-index.js

@@ -13,6 +13,7 @@ QUnit.test('Array#findIndex', assert => {
     assert.same(that, array);
   }, context);
   assert.same(findIndex([1, 3, NaN, 42, {}], it => it === 42), 3);
+  assert.same(findIndex([1, 3, NaN, 42, {}], it => it === 43), -1);
   if (STRICT) {
     assert.throws(() => findIndex(null, 0), TypeError);
     assert.throws(() => findIndex(undefined, 0), TypeError);

tests/unit-pure/es.array.flat-map.js

@@ -16,6 +16,7 @@ QUnit.test('Array#flatMap', assert => {
     assert.same(index, 0);
     assert.same(that, array);
     assert.same(this, context);
+    return value;
   }, context);
   if (STRICT) {
     assert.throws(() => flatMap(null, it => it), TypeError);

tests/unit-pure/esnext.array.filter-reject.js

@@ -19,6 +19,9 @@ QUnit.test('Array#filterReject', assert => {
     assert.throws(() => filterReject(null, () => { /* empty */ }), TypeError);
     assert.throws(() => filterReject(undefined, () => { /* empty */ }), TypeError);
   }
+  assert.notThrows(() => filterReject({ length: -1, 0: 1 }, () => {
+    throw new Error();
+  }), 'uses ToLength');
   array = [];
   // eslint-disable-next-line object-shorthand -- constructor
   array.constructor = { [Symbol.species]: function () {