<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
< /**
< * Unit tests for qtype_calculated_variable_substituter.
< *
< * @package qtype
< * @subpackage calculated
< * @copyright 2011 The Open University
< * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
< */
> namespace qtype_calculated;
> use qtype_calculated_variable_substituter;
defined('MOODLE_INTERNAL') || die();
global $CFG;
require_once($CFG->dirroot . '/question/type/calculated/question.php');
require_once($CFG->dirroot . '/question/type/calculated/questiontype.php');
<
/**
* Unit tests for {@link qtype_calculated_variable_substituter}.
*
> * @package qtype_calculated
* @copyright 2011 The Open University
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
< class qtype_calculated_variable_substituter_test extends advanced_testcase {
> class variablesubstituter_test extends \advanced_testcase {
public function test_simple_expression() {
$vs = new qtype_calculated_variable_substituter(array('a' => 1, 'b' => 2), '.');
$this->assertEquals(3, $vs->calculate('{a} + {b}'));
}
public function test_simple_expression_negatives() {
$vs = new qtype_calculated_variable_substituter(array('a' => -1, 'b' => -2), '.');
$this->assertEquals(1, $vs->calculate('{a}-{b}'));
}
public function test_cannot_use_nonnumbers() {
< $this->expectException(moodle_exception::class);
> $this->expectException(\moodle_exception::class);
$vs = new qtype_calculated_variable_substituter(array('a' => 'frog', 'b' => -2), '.');
}
public function test_invalid_expression() {
$vs = new qtype_calculated_variable_substituter(array('a' => 1, 'b' => 2), '.');
< $this->expectException(moodle_exception::class);
> $this->expectException(\moodle_exception::class);
$vs->calculate('{a} + {b}?');
}
public function test_tricky_invalid_expression() {
$vs = new qtype_calculated_variable_substituter(array('a' => 1, 'b' => 2), '.');
< $this->expectException(moodle_exception::class);
> $this->expectException(\moodle_exception::class);
$vs->calculate('{a}{b}'); // Have to make sure this does not just evaluate to 12.
}
public function test_division_by_zero_expression() {
if (intval(PHP_VERSION) < 7) {
$this->markTestSkipped('Division by zero triggers a PHP warning before PHP 7.');
}
$vs = new qtype_calculated_variable_substituter(array('a' => 1, 'b' => 0), '.');
< $this->expectException(moodle_exception::class);
> $this->expectException(\moodle_exception::class);
$vs->calculate('{a} / {b}');
}
public function test_replace_expressions_in_text_simple_var() {
$vs = new qtype_calculated_variable_substituter(array('a' => 1, 'b' => 2), '.');
$this->assertEquals('1 + 2', $vs->replace_expressions_in_text('{a} + {b}'));
}
public function test_replace_expressions_in_confusing_text() {
$vs = new qtype_calculated_variable_substituter(array('a' => 1, 'b' => 2), '.');
$this->assertEquals("(1) 1\n(2) 2", $vs->replace_expressions_in_text("(1) {a}\n(2) {b}"));
}
public function test_replace_expressions_in_text_formula() {
$vs = new qtype_calculated_variable_substituter(array('a' => 1, 'b' => 2), '.');
$this->assertEquals('= 3', $vs->replace_expressions_in_text('= {={a} + {b}}'));
}
public function test_expression_has_unmapped_placeholder() {
$this->expectException('moodle_exception');
$this->expectExceptionMessage(get_string('illegalformulasyntax', 'qtype_calculated', '{c}'));
$vs = new qtype_calculated_variable_substituter(array('a' => 1, 'b' => 2), '.');
$vs->calculate('{c} - {a} + {b}');
}
public function test_replace_expressions_in_text_negative() {
$vs = new qtype_calculated_variable_substituter(array('a' => -1, 'b' => 2), '.');
$this->assertEquals('temperatures -1 and 2',
$vs->replace_expressions_in_text('temperatures {a} and {b}'));
}
public function test_replace_expressions_in_text_commas_for_decimals() {
$vs = new qtype_calculated_variable_substituter(
array('phi' => 1.61803399, 'pi' => 3.14159265), ',');
$this->assertEquals('phi (1,61803399) + pi (3,14159265) = 4,75962664',
$vs->replace_expressions_in_text('phi ({phi}) + pi ({pi}) = {={phi} + {pi}}'));
}
public function test_format_float_dot() {
$vs = new qtype_calculated_variable_substituter(array('a' => -1, 'b' => 2), '.');
$this->assertSame('0.12345', $vs->format_float(0.12345));
$this->assertSame('0', $vs->format_float(0.12345, 0, 1));
$this->assertSame('0.12', $vs->format_float(0.12345, 2, 1));
$this->assertSame('0.1235', $vs->format_float(0.12345, 4, 1));
$this->assertSame('0.12', $vs->format_float(0.12345, 2, 2));
$this->assertSame('0.0012', $vs->format_float(0.0012345, 4, 1));
}
public function test_format_float_comma() {
$vs = new qtype_calculated_variable_substituter(array('a' => -1, 'b' => 2), ',');
$this->assertSame('0,12345', $vs->format_float(0.12345));
$this->assertSame('0', $vs->format_float(0.12345, 0, 1));
$this->assertSame('0,12', $vs->format_float(0.12345, 2, 1));
$this->assertSame('0,1235', $vs->format_float(0.12345, 4, 1));
$this->assertSame('0,12', $vs->format_float(0.12345, 2, 2));
$this->assertSame('0,0012', $vs->format_float(0.0012345, 4, 1));
}
public function test_format_float_nan_inf() {
$vs = new qtype_calculated_variable_substituter([ ], '.');
$this->assertSame('NAN', $vs->format_float(NAN));
$this->assertSame('INF', $vs->format_float(INF));
$this->assertSame('-INF', $vs->format_float(-INF));
}
}