Fix tests

Author: vmcj

webapp/tests/Unit/Service/ImportProblemServiceTest.php

@@ -528,8 +528,8 @@ public function testParseTestCaseGroupMetaProblemSpecSpecifiedOutputValidatorFla
         $result = ImportProblemService::parseTestCaseGroupMeta($yaml, 'test-group', $messages);
 
         $this->assertNotNull($result);
-        var_dump($messages);
-        $this->assertEmpty($messages['danger'] ?? [], "Failed with: " . $messages['danger']);
+        var_dump($messages['danger']);
+        $this->assertEmpty($messages['danger'] ?? [], "Failed with: " . implode(', ', $messages['danger']));
         $this->assertEquals('--any arg -x should work', $result->getOutputValidatorFlags());
     }
 
@@ -541,7 +541,8 @@ public function testParseTestCaseGroupMetaUnspecifiedOutputValidatorArgsAccepted
         $result = ImportProblemService::parseTestCaseGroupMeta($yaml, 'test-group', $messages);
 
         $this->assertNotNull($result);
-        $this->assertEmpty($messages['danger'] ?? [], "Failed with: " . $messages['danger']);
+        var_dump($messages['danger']);
+        $this->assertEmpty($messages['danger'] ?? [], "Failed with: " . implode(', ', $messages['danger']));
         $this->assertEquals('--any arg -x should work', $result->getOutputValidatorFlags());
     }
 
@@ -556,7 +557,8 @@ public function testParseTestCaseGroupMetaProblemSpecSpecifiedOutputValidatorFla
         $result = ImportProblemService::parseTestCaseGroupMeta($yaml, 'test-group', $messages);
 
         $this->assertNotNull($result);
-        $this->assertEmpty($messages['danger'] ?? [], "Failed with: " . $messages['danger']);
+        var_dump($messages['danger']);
+        $this->assertEmpty($messages['danger'] ?? [], "Failed with: " . implode(', ', $messages['danger']));
         $this->assertEquals('--any arg -x should work', $result->getOutputValidatorFlags());
     }