This could be when there are multiple steps or paths in rule execution and
the client wants to know which one of those were executed after a
rule->applies() call has been made.
This will most probably happen in a rule where multipe business rules are
combined or where there are multiple conditional paths.
public function testRuleResult()
{
$rule = new izzum\rules\True();
$result = 'rule failed';
$r = new RuleResult($rule, $result);
$this->assertEquals($rule, $r->getRule());
$this->assertEquals($result, $r->getResult());
//a new rule
$rule = new RuleResultRule();
$this->assertFalse($rule->containsResult(RuleResultRule::RESULT_CONDITIONAL));
$this->assertFalse($rule->hasResult());
$rule->applies();
$result = $rule->getResults();
$result = $result[0];
$this->assertEquals($rule, $result->getRule());
$this->assertEquals(RuleResultRule::RESULT_CONDITIONAL, $result->getResult());
$this->assertTrue($rule->containsResult(RuleResultRule::RESULT_CONDITIONAL));
$this->assertTrue($rule->hasResult());
}
