protected function sub_test_grade_category_is_extracredit_used()
{
$category = new grade_category();
// Following use aggregationcoef.
$category->aggregation = GRADE_AGGREGATE_WEIGHTED_MEAN2;
$this->assertTrue($category->is_extracredit_used());
$category->aggregation = GRADE_AGGREGATE_EXTRACREDIT_MEAN;
$this->assertTrue($category->is_extracredit_used());
$category->aggregation = GRADE_AGGREGATE_SUM;
$this->assertTrue($category->is_extracredit_used());
// Following don't use aggregationcoef.
$category->aggregation = GRADE_AGGREGATE_WEIGHTED_MEAN;
$this->assertFalse($category->is_extracredit_used());
$category->aggregation = GRADE_AGGREGATE_MAX;
$this->assertFalse($category->is_extracredit_used());
$category->aggregation = GRADE_AGGREGATE_MEAN;
$this->assertFalse($category->is_extracredit_used());
$category->aggregation = GRADE_AGGREGATE_MEDIAN;
$this->assertFalse($category->is_extracredit_used());
$category->aggregation = GRADE_AGGREGATE_MIN;
$this->assertFalse($category->is_extracredit_used());
$category->aggregation = GRADE_AGGREGATE_MODE;
$this->assertFalse($category->is_extracredit_used());
}
