[Process] fix test case

Author: nicolas-grekas

src/Symfony/Component/Process/PhpExecutableFinder.php

@@ -62,7 +62,7 @@ public function find($includeArgs = true)
             }
         }
 
-        if (is_executable($php = PHP_BINDIR.'/php'.('\\' === DIRECTORY_SEPARATOR ? '.exe' : ''))) {
+        if (is_executable($php = PHP_BINDIR.('\\' === DIRECTORY_SEPARATOR ? '\\php.exe' : '/php'))) {
             return $php;
         }
 

src/Symfony/Component/Process/Tests/PhpExecutableFinderTest.php

@@ -94,7 +94,7 @@ public function testFindWithSuffix()
         //TODO maybe php executable is custom or even Windows
         if ('\\' === DIRECTORY_SEPARATOR) {
             $this->assertTrue(is_executable($current));
-            $this->assertTrue((bool) preg_match('/'.addslashes(DIRECTORY_SEPARATOR).'php\.(exe|bat|cmd|com)$/i', $current), '::find() returns the executable PHP with suffixes');
+            $this->assertRegExp('/\\\\php\.(exe|bat|cmd|com)$/i', $current, '::find() returns the executable PHP with suffixes');
         }
     }
 }