public function test_get_all_raw_casstrings_session()
{
$sa = array('p:diff(sans)', 'q=int(tans)');
foreach ($sa as $s) {
$cs = new stack_cas_casstring($s);
$cs->get_valid('t');
$s1[] = $cs;
}
$cs1 = new stack_cas_session($s1, null, 0);
$raw = 'Take @ 1/(1+x^2) @ and then @sin(z^2)@.';
$at1 = new stack_cas_text($raw, $cs1, 0);
$val = array('p:diff(sans)', 'q=int(tans)', '1/(1+x^2)', 'sin(z^2)');
$this->assertEquals($val, $at1->get_all_raw_casstrings());
}
/**
* @return array of CAS strings. These cas strings include the names of all
* the input variables that are required by this node.
*/
public function get_required_cas_strings()
{
$ct = new stack_cas_text($this->branches[0]['feedback'] . $this->branches[1]['feedback']);
$requiredcasstrings = $ct->get_all_raw_casstrings();
$requiredcasstrings[] = $this->sans->get_raw_casstring();
$requiredcasstrings[] = $this->tans->get_raw_casstring();
if ($this->process_atoptions() && trim($this->atoptions) != '') {
$requiredcasstrings[] = $this->atoptions;
}
return $requiredcasstrings;
}
