/**
  * Delete a value from the keychain
  *
  * @depends  testSaveKeychain
  *
  * @return   void
  *
  * @since    12.3
  */
 public function testDeleteValue()
 {
     $keychainFile = __DIR__ . '/data/web-keychain.dat';
     $publicKeyFile = __DIR__ . '/data/publickey.pem';
     $passphraseFile = __DIR__ . '/data/web-passphrase.dat';
     $keychain = new JKeychain();
     $keychain->loadKeychain($keychainFile, $passphraseFile, $publicKeyFile);
     $this->assertEquals('liao', $keychain->get('dennis'));
     $keychain->deleteValue('dennis');
     $this->assertFalse($keychain->exists('dennis'));
     $keychain->saveKeychain($keychainFile, $passphraseFile, $publicKeyFile);
     $keychain = new JKeychain();
     $keychain->loadKeychain($keychainFile, $passphraseFile, $publicKeyFile);
     $this->assertFalse($keychain->exists('dennis'));
 }