MDL-40264 fix essay handling of zero-string response

Fixes an inappropriate behavior of the is_complete_response() function
for the Essay question type, which caused the string "0" to be
inappropriately marked as an incomplete response.

Also adds a set of unit tests for the Essay question type's
is_complete_response.
This commit is contained in:
Kyle Temkin 2013-06-21 03:28:59 -04:00
parent 6420fea64b
commit 3553982d6d
2 changed files with 16 additions and 1 deletions

View file

@ -82,7 +82,7 @@ class qtype_essay_question extends question_with_responses {
}
public function is_complete_response(array $response) {
return !empty($response['answer']);
return array_key_exists('answer', $response) && ($response['answer'] !== '');
}
public function is_same_response(array $prevresponse, array $newresponse) {

View file

@ -49,4 +49,19 @@ class qtype_essay_question_test extends advanced_testcase {
$this->assertEquals($longstring,
$essay->summarise_response(array('answer' => $longstring)));
}
public function test_is_complete_response() {
$essay = test_question_maker::make_an_essay_question();
$essay->start_attempt(new question_attempt_step(), 1);
// The empty string should be considered an empty response, as should a lack of a response.
$this->assertFalse($essay->is_complete_response(array('answer' => '')));
$this->assertFalse($essay->is_complete_response(array()));
// Any nonempty string should be considered a complete response.
$this->assertTrue($essay->is_complete_response(array('answer' => 'A student response.')));
$this->assertTrue($essay->is_complete_response(array('answer' => '0 times.')));
$this->assertTrue($essay->is_complete_response(array('answer' => '0')));
}
}