/**
  * Tests the JAccessRule::mergeIdentity method.
  *
  * @return  void
  *
  * @since   11.1
  */
 public function testMergeIdentity()
 {
     // Construct an rule with no identities.
     $rule = new JAccessRule('');
     // Add the identity with allow.
     $rule->mergeIdentity(-42, true);
     $this->assertEquals('{"-42":1}', (string) $rule);
     // Readd the identity, but deny.
     $rule->mergeIdentity(-42, false);
     $this->assertEquals('{"-42":0}', (string) $rule);
     // Readd the identity with allow (checking deny wins).
     $rule->mergeIdentity(-42, true);
     $this->assertEquals('{"-42":0}', (string) $rule);
 }