add test for collection multiple wheres (#42908)

tests/Support/SupportCollectionTest.php

@@ -1052,6 +1052,17 @@ public function testWhere($collection)
             [['v' => 1], ['v' => 2]],
             $c->where('v')->values()->all()
         );
+
+        $c = new $collection([
+            ['v' => 1, 'g' => 3],
+            ['v' => 2, 'g' => 2],
+            ['v' => 2, 'g' => 3],
+            ['v' => 2, 'g' => null],
+        ]);
+        $this->assertEquals([['v' => 2, 'g' => 3]], $c->where('v', 2)->where('g', 3)->values()->all());
+        $this->assertEquals([['v' => 2, 'g' => 3]], $c->where('v', 2)->where('g', '>', 2)->values()->all());
+        $this->assertEquals([], $c->where('v', 2)->where('g', 4)->values()->all());
+        $this->assertEquals([['v' => 2, 'g' => null]], $c->where('v', 2)->whereNull('g')->values()->all());
     }
 
     /**
@@ -1085,6 +1096,8 @@ public function testWhereIn($collection)
     {
         $c = new $collection([['v' => 1], ['v' => 2], ['v' => 3], ['v' => '3'], ['v' => 4]]);
         $this->assertEquals([['v' => 1], ['v' => 3], ['v' => '3']], $c->whereIn('v', [1, 3])->values()->all());
+        $this->assertEquals([], $c->whereIn('v', [2])->whereIn('v', [1, 3])->values()->all());
+        $this->assertEquals([['v' => 1]], $c->whereIn('v', [1])->whereIn('v', [1, 3])->values()->all());
     }
 
     /**
@@ -1103,6 +1116,7 @@ public function testWhereNotIn($collection)
     {
         $c = new $collection([['v' => 1], ['v' => 2], ['v' => 3], ['v' => '3'], ['v' => 4]]);
         $this->assertEquals([['v' => 2], ['v' => 4]], $c->whereNotIn('v', [1, 3])->values()->all());
+        $this->assertEquals([['v' => 4]], $c->whereNotIn('v', [2])->whereNotIn('v', [1, 3])->values()->all());
     }
 
     /**