update tests to use the new error assertion helper

Author: xabbuh

Tests/ParserTest.php

@@ -11,6 +11,7 @@
 
 namespace Symfony\Component\Yaml\Tests;
 
+use Symfony\Bridge\PhpUnit\ErrorAssert;
 use Symfony\Component\Yaml\Yaml;
 use Symfony\Component\Yaml\Parser;
 
@@ -930,27 +931,14 @@ public function testFloatKeys()
      */
     public function testColonInMappingValueException()
     {
-        $yaml = <<<EOF
+        $parser = $this->parser;
+
+        ErrorAssert::assertDeprecationsAreTriggered('Using a colon in the unquoted mapping value "bar: baz" in line 1 is deprecated since Symfony 2.8 and will throw a ParseException in 3.0.', function () use ($parser) {
+            $yaml = <<<EOF
 foo: bar: baz
 EOF;
-
-        $deprecations = array();
-        set_error_handler(function ($type, $msg) use (&$deprecations) {
-            if (E_USER_DEPRECATED !== $type) {
-                restore_error_handler();
-
-                return call_user_func_array('PHPUnit_Util_ErrorHandler::handleError', func_get_args());
-            }
-
-            $deprecations[] = $msg;
+            $parser->parse($yaml);
         });
-
-        $this->parser->parse($yaml);
-
-        restore_error_handler();
-
-        $this->assertCount(1, $deprecations);
-        $this->assertContains('Using a colon in the unquoted mapping value "bar: baz" in line 1 is deprecated since Symfony 2.8 and will throw a ParseException in 3.0.', $deprecations[0]);
     }
 
     public function testColonInMappingValueExceptionNotTriggeredByColonInComment()