filter before min and max

Author: taylorotwell

src/Illuminate/Support/Collection.php

@@ -649,7 +649,7 @@ public function max($callback = null)
     {
         $callback = $this->valueRetriever($callback);
 
-        return $this->reduce(function ($result, $item) use ($callback) {
+        return $this->filter()->reduce(function ($result, $item) use ($callback) {
             $value = $callback($item);
 
             return is_null($result) || $value > $result ? $value : $result;
@@ -699,7 +699,7 @@ public function min($callback = null)
     {
         $callback = $this->valueRetriever($callback);
 
-        return $this->reduce(function ($result, $item) use ($callback) {
+        return $this->filter()->reduce(function ($result, $item) use ($callback) {
             $value = $callback($item);
 
             return is_null($result) || $value < $result ? $value : $result;

tests/Support/SupportCollectionTest.php

@@ -1374,6 +1374,9 @@ public function testGettingMinItemsFromCollection()
         $c = new Collection([1, 2, 3, 4, 5]);
         $this->assertEquals(1, $c->min());
 
+        $c = new Collection([1, null, 3, 4, 5]);
+        $this->assertEquals(1, $c->min());
+
         $c = new Collection();
         $this->assertNull($c->min());
     }