[8.x] Add missing onLastPage to CursorPaginator

src/Illuminate/Pagination/CursorPaginator.php

@@ -121,6 +121,16 @@ public function onFirstPage()
         return is_null($this->cursor) || ($this->cursor->pointsToPreviousItems() && ! $this->hasMore);
     }
 
+    /**
+     * Determine if the paginator is on the last page.
+     *
+     * @return bool
+     */
+    public function onLastPage()
+    {
+        return ! $this->hasMorePages();
+    }
+
     /**
      * Get the instance as an array.
      *

tests/Pagination/CursorPaginatorTest.php

@@ -76,6 +76,24 @@ public function testCanTransformPaginatorItems()
         $this->assertSame([['id' => 6], ['id' => 7]], $p->items());
     }
 
+    public function testLengthAwarePaginatorisOnFirstAndLastPage()
+    {
+        $paginator = new CursorPaginator([['id' => 1], ['id' => 2], ['id' => 3], ['id' => 4]], 2, null, [
+            'parameters' => ['id'],
+        ]);
+
+        $this->assertTrue($paginator->onFirstPage());
+        $this->assertFalse($paginator->onLastPage());
+
+        $cursor = new Cursor(['id' => 3]);
+        $paginator = new CursorPaginator([['id' => 3], ['id' => 4]], 2, $cursor, [
+            'parameters' => ['id'],
+        ]);
+
+        $this->assertFalse($paginator->onFirstPage());
+        $this->assertTrue($paginator->onLastPage());
+    }
+
     protected function getCursor($params, $isNext = true)
     {
         return (new Cursor($params, $isNext))->encode();