Move assorted tests from integration to unit [MAILPOET-2009]

tests/integration/API/JSON/ErrorResponseTest.php

@@ -1,34 +0,0 @@
-<?php
-
-namespace MailPoet\Test\API\JSON;
-
-use MailPoet\API\JSON\ErrorResponse;
-
-class ErrorResponseTest extends \MailPoetTest {
-  function testItSanitizesSqlErrorsWhenReturningResponse() {
-    $errors = array(
-      'valid error',
-      'SQLSTATE[22001]: Some SQL error',
-      'another valid error'
-    );
-    $error_response = new ErrorResponse($errors);
-    expect($error_response->getData())->equals(
-      array(
-        'errors' => array(
-          array(
-            'error' => 0,
-            'message' => 'valid error'
-          ),
-          array(
-            'error' => 1,
-            'message' => 'An unknown error occurred.'
-          ),
-          array(
-            'error' => 2,
-            'message' => 'another valid error'
-          )
-        )
-      )
-    );
-  }
-}