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Long Term Support Release
Differences Between: [Versions 310 and 401] [Versions 39 and 401]
1 <?php 2 // This file is part of Moodle - http://moodle.org/ 3 // 4 // Moodle is free software: you can redistribute it and/or modify 5 // it under the terms of the GNU General Public License as published by 6 // the Free Software Foundation, either version 3 of the License, or 7 // (at your option) any later version. 8 // 9 // Moodle is distributed in the hope that it will be useful, 10 // but WITHOUT ANY WARRANTY; without even the implied warranty of 11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 // GNU General Public License for more details. 13 // 14 // You should have received a copy of the GNU General Public License 15 // along with Moodle. If not, see <http://www.gnu.org/licenses/>. 16 17 namespace qtype_calculated; 18 19 use qtype_calculated_variable_substituter; 20 21 defined('MOODLE_INTERNAL') || die(); 22 23 global $CFG; 24 require_once($CFG->dirroot . '/question/type/calculated/question.php'); 25 require_once($CFG->dirroot . '/question/type/calculated/questiontype.php'); 26 27 /** 28 * Unit tests for {@link qtype_calculated_variable_substituter}. 29 * 30 * @package qtype_calculated 31 * @copyright 2011 The Open University 32 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later 33 */ 34 class variablesubstituter_test extends \advanced_testcase { 35 public function test_simple_expression() { 36 $vs = new qtype_calculated_variable_substituter(array('a' => 1, 'b' => 2), '.'); 37 $this->assertEquals(3, $vs->calculate('{a} + {b}')); 38 } 39 40 public function test_simple_expression_negatives() { 41 $vs = new qtype_calculated_variable_substituter(array('a' => -1, 'b' => -2), '.'); 42 $this->assertEquals(1, $vs->calculate('{a}-{b}')); 43 } 44 45 public function test_cannot_use_nonnumbers() { 46 $this->expectException(\moodle_exception::class); 47 $vs = new qtype_calculated_variable_substituter(array('a' => 'frog', 'b' => -2), '.'); 48 } 49 50 public function test_invalid_expression() { 51 $vs = new qtype_calculated_variable_substituter(array('a' => 1, 'b' => 2), '.'); 52 $this->expectException(\moodle_exception::class); 53 $vs->calculate('{a} + {b}?'); 54 } 55 56 public function test_tricky_invalid_expression() { 57 $vs = new qtype_calculated_variable_substituter(array('a' => 1, 'b' => 2), '.'); 58 $this->expectException(\moodle_exception::class); 59 $vs->calculate('{a}{b}'); // Have to make sure this does not just evaluate to 12. 60 } 61 62 public function test_division_by_zero_expression() { 63 64 if (intval(PHP_VERSION) < 7) { 65 $this->markTestSkipped('Division by zero triggers a PHP warning before PHP 7.'); 66 } 67 68 $vs = new qtype_calculated_variable_substituter(array('a' => 1, 'b' => 0), '.'); 69 $this->expectException(\moodle_exception::class); 70 $vs->calculate('{a} / {b}'); 71 } 72 73 public function test_replace_expressions_in_text_simple_var() { 74 $vs = new qtype_calculated_variable_substituter(array('a' => 1, 'b' => 2), '.'); 75 $this->assertEquals('1 + 2', $vs->replace_expressions_in_text('{a} + {b}')); 76 } 77 78 public function test_replace_expressions_in_confusing_text() { 79 $vs = new qtype_calculated_variable_substituter(array('a' => 1, 'b' => 2), '.'); 80 $this->assertEquals("(1) 1\n(2) 2", $vs->replace_expressions_in_text("(1) {a}\n(2) {b}")); 81 } 82 83 public function test_replace_expressions_in_text_formula() { 84 $vs = new qtype_calculated_variable_substituter(array('a' => 1, 'b' => 2), '.'); 85 $this->assertEquals('= 3', $vs->replace_expressions_in_text('= {={a} + {b}}')); 86 } 87 88 public function test_expression_has_unmapped_placeholder() { 89 $this->expectException('moodle_exception'); 90 $this->expectExceptionMessage(get_string('illegalformulasyntax', 'qtype_calculated', '{c}')); 91 $vs = new qtype_calculated_variable_substituter(array('a' => 1, 'b' => 2), '.'); 92 $vs->calculate('{c} - {a} + {b}'); 93 } 94 95 public function test_replace_expressions_in_text_negative() { 96 $vs = new qtype_calculated_variable_substituter(array('a' => -1, 'b' => 2), '.'); 97 $this->assertEquals('temperatures -1 and 2', 98 $vs->replace_expressions_in_text('temperatures {a} and {b}')); 99 } 100 101 public function test_replace_expressions_in_text_commas_for_decimals() { 102 $vs = new qtype_calculated_variable_substituter( 103 array('phi' => 1.61803399, 'pi' => 3.14159265), ','); 104 $this->assertEquals('phi (1,61803399) + pi (3,14159265) = 4,75962664', 105 $vs->replace_expressions_in_text('phi ({phi}) + pi ({pi}) = {={phi} + {pi}}')); 106 } 107 108 public function test_format_float_dot() { 109 $vs = new qtype_calculated_variable_substituter(array('a' => -1, 'b' => 2), '.'); 110 $this->assertSame('0.12345', $vs->format_float(0.12345)); 111 112 $this->assertSame('0', $vs->format_float(0.12345, 0, 1)); 113 $this->assertSame('0.12', $vs->format_float(0.12345, 2, 1)); 114 $this->assertSame('0.1235', $vs->format_float(0.12345, 4, 1)); 115 116 $this->assertSame('0.12', $vs->format_float(0.12345, 2, 2)); 117 $this->assertSame('0.0012', $vs->format_float(0.0012345, 4, 1)); 118 } 119 120 public function test_format_float_comma() { 121 $vs = new qtype_calculated_variable_substituter(array('a' => -1, 'b' => 2), ','); 122 $this->assertSame('0,12345', $vs->format_float(0.12345)); 123 124 $this->assertSame('0', $vs->format_float(0.12345, 0, 1)); 125 $this->assertSame('0,12', $vs->format_float(0.12345, 2, 1)); 126 $this->assertSame('0,1235', $vs->format_float(0.12345, 4, 1)); 127 128 $this->assertSame('0,12', $vs->format_float(0.12345, 2, 2)); 129 $this->assertSame('0,0012', $vs->format_float(0.0012345, 4, 1)); 130 } 131 132 public function test_format_float_nan_inf() { 133 $vs = new qtype_calculated_variable_substituter([ ], '.'); 134 135 $this->assertSame('NAN', $vs->format_float(NAN)); 136 $this->assertSame('INF', $vs->format_float(INF)); 137 $this->assertSame('-INF', $vs->format_float(-INF)); 138 } 139 }
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