Fix JsonHelper implementation and tests

src/JsonHelper.php

@@ -4,6 +4,7 @@
 
 namespace Keboola\Component;
 
+use Keboola\Component\JsonHelper\JsonHelperException;
 use Symfony\Component\Filesystem\Exception\FileNotFoundException;
 use Symfony\Component\Serializer\Encoder\JsonEncoder;
 
@@ -42,13 +43,13 @@ public static function writeFile(string $filePath, array $data, bool $formatted
             mkdir($filePathDir, 0777, true);
         }
 
-        $result = file_put_contents(
+        $result = @file_put_contents(
             $filePath,
             self::encode($data, $formatted)
         );
 
         if ($result === false) {
-            throw new \ErrorException('Could not write to file "%s".');
+            throw new JsonHelperException(sprintf('Could not write to file "%s".', $filePath));
         }
     }
 }

src/JsonHelper/JsonHelperException.php

@@ -0,0 +1,11 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Keboola\Component\JsonHelper;
+
+use Exception;
+
+class JsonHelperException extends Exception
+{
+}

tests/JsonHelperTest.php

@@ -5,6 +5,7 @@
 namespace Keboola\Component\Tests;
 
 use Keboola\Component\JsonHelper;
+use Keboola\Component\JsonHelper\JsonHelperException;
 use PHPUnit\Framework\TestCase;
 use Symfony\Component\Filesystem\Exception\FileNotFoundException;
 use Symfony\Component\Serializer\Exception\NotEncodableValueException;
@@ -142,13 +143,13 @@ public function testWriteToNonExistingDirectorySuccessfully(): void
         rmdir(pathinfo($filePath, PATHINFO_DIRNAME));
     }
 
-    public function testWriteToProtectedDirectoryThrowsException(): void
+    public function testFailedWriteThrowsException(): void
     {
-        $filePath =  '/tmp.json';
+        $filePath =  'php://stdin';
         $array = ['key'];
 
-        $this->expectException(\ErrorException::class);
-        $this->expectExceptionMessageRegExp('~^file_put_contents(.*): failed to open stream: Permission denied$~');
+        $this->expectException(JsonHelperException::class);
+        $this->expectExceptionMessage('Could not write to file "php://stdin".');
         JsonHelper::writeFile($filePath, $array);
     }
 }