function test_getSessionId()
 {
     session_destroy();
     $tester = new FunctionalTester();
     $tester->setSession(['hoge' => 'fuga']);
     $this->assertEquals(26, strlen($tester->getSessionId()));
 }
 function test_generateMockFilesStr()
 {
     $tester = new FunctionalTester();
     $files = explode(' ', $tester->generateMockFilesStr());
     foreach ($files as $file) {
         $cmd = 'php -l ' . $file . ' >/dev/null 2>&1';
         exec($cmd, $output, $return_var);
         $this->assertEquals($return_var, 0);
     }
 }