up: add new assert isResource check

Author: inhere

src/Helper/Assert.php

@@ -6,6 +6,8 @@
 use LogicException;
 use function in_array;
 use function is_dir;
+use function is_file;
+use function is_resource;
 
 /**
  * class Assert
@@ -285,6 +287,19 @@ public static function isFile(string $path, string $errMsg = ''): void
         }
     }
 
+    /**
+     * @param mixed|resource $res
+     * @param string $errMsg
+     *
+     * @return void
+     */
+    public static function isResource($res, string $errMsg = ''): void
+    {
+        if (!is_resource($res)) {
+            throw static::createEx($errMsg ?: "Excepted an resource");
+        }
+    }
+
     // ------------- helper methods -------------
 
     /**

test/Helper/AssertTest.php

@@ -4,6 +4,7 @@
 
 use Toolkit\Stdlib\Helper\Assert;
 use Toolkit\StdlibTest\BaseLibTestCase;
+use const STDOUT;
 
 /**
  * class AssertTest
@@ -69,5 +70,11 @@ public function testAssert_FS(): void
 
         $e = $this->tryCatchRun(fn() => Assert::isDir('./not-exists'));
         $this->assertException($e, 'No such dir: ./not-exists');
+
+        $e = $this->tryCatchRun(fn() => Assert::isResource('invalid'));
+        $this->assertException($e, 'Excepted an resource');
+
+        $e = $this->tryCatchRun(fn() => Assert::isResource(STDOUT));
+        $this->assertException($e, 'NO ERROR', -1);
     }
 }