forked from moodle/moodle
-
Notifications
You must be signed in to change notification settings - Fork 0
/
mathslib_test.php
236 lines (187 loc) · 8.14 KB
/
mathslib_test.php
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
<?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 of mathslib wrapper and underlying EvalMath library.
*
* @package core
* @category phpunit
* @copyright 2007 Petr Skoda {@link http://skodak.org}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die();
global $CFG;
require_once($CFG->libdir . '/mathslib.php');
class core_mathslib_testcase extends basic_testcase {
/**
* Tests the basic formula evaluation.
*/
public function test__basic() {
$formula = new calc_formula('=1+2');
$res = $formula->evaluate();
$this->assertSame($res, 3, '3+1 is: %s');
}
/**
* Tests the formula params.
*/
public function test__params() {
$formula = new calc_formula('=a+b+c', array('a'=>10, 'b'=>20, 'c'=>30));
$res = $formula->evaluate();
$this->assertSame(60, $res, '10+20+30 is: %s');
}
/**
* Tests the changed params.
*/
public function test__changing_params() {
$formula = new calc_formula('=a+b+c', array('a'=>10, 'b'=>20, 'c'=>30));
$res = $formula->evaluate();
$this->assertSame(60, $res, '10+20+30 is: %s');
$formula->set_params(array('a'=>1, 'b'=>2, 'c'=>3));
$res = $formula->evaluate();
$this->assertSame(6, $res, 'changed params 1+2+3 is: %s');
}
/**
* Tests the spreadsheet emulation function in formula.
*/
public function test__calc_function() {
$formula = new calc_formula('=sum(a, b, c)', array('a'=>10, 'b'=>20, 'c'=>30));
$res = $formula->evaluate();
$this->assertSame(60, $res, 'sum(a, b, c) is: %s');
}
public function test_other_functions() {
$formula = new calc_formula('=average(1,2,3)');
$this->assertSame(2, $formula->evaluate());
$formula = new calc_formula('=mod(10,3)');
$this->assertSame(1, $formula->evaluate());
$formula = new calc_formula('=power(2,3)');
$this->assertSame(8, $formula->evaluate());
}
/**
* Tests the min and max functions.
*/
public function test__minmax_function() {
$formula = new calc_formula('=min(a, b, c)', array('a'=>10, 'b'=>20, 'c'=>30));
$res = $formula->evaluate();
$this->assertSame(10, $res, 'minimum is: %s');
$formula = new calc_formula('=max(a, b, c)', array('a'=>10, 'b'=>20, 'c'=>30));
$res = $formula->evaluate();
$this->assertSame(30, $res, 'maximum is: %s');
}
/**
* Tests special chars.
*/
public function test__specialchars() {
$formula = new calc_formula('=gi1 + gi2 + gi11', array('gi1'=>10, 'gi2'=>20, 'gi11'=>30));
$res = $formula->evaluate();
$this->assertSame(60, $res, 'sum is: %s');
}
/**
* Tests some slightly more complex expressions.
*/
public function test__more_complex_expressions() {
$formula = new calc_formula('=pi() + a', array('a'=>10));
$res = $formula->evaluate();
$this->assertSame(pi()+10, $res);
$formula = new calc_formula('=pi()^a', array('a'=>10));
$res = $formula->evaluate();
$this->assertSame(pow(pi(), 10), $res);
$formula = new calc_formula('=-8*(5/2)^2*(1-sqrt(4))-8');
$res = $formula->evaluate();
$this->assertSame(-8*pow((5/2), 2)*(1-sqrt(4))-8, $res);
}
/**
* Tests some slightly more complex expressions.
*/
public function test__error_handling() {
$formula = new calc_formula('=pi( + a', array('a'=>10));
$res = $formula->evaluate();
$this->assertFalse($res);
$this->assertSame(get_string('unexpectedoperator', 'mathslib', '+'), $formula->get_error());
$formula = new calc_formula('=pi(');
$res = $formula->evaluate();
$this->assertSame($res, false);
$this->assertSame(get_string('expectingaclosingbracket', 'mathslib'), $formula->get_error());
$formula = new calc_formula('=pi()^');
$res = $formula->evaluate();
$this->assertSame($res, false);
$this->assertSame(get_string('operatorlacksoperand', 'mathslib', '^'), $formula->get_error());
}
public function test_rounding_function() {
// Rounding to the default number of decimal places.
// The default == 0.
$formula = new calc_formula('=round(2.5)');
$this->assertSame(3.0, $formula->evaluate());
$formula = new calc_formula('=round(1.5)');
$this->assertSame(2.0, $formula->evaluate());
$formula = new calc_formula('=round(-1.49)');
$this->assertSame(-1.0, $formula->evaluate());
$formula = new calc_formula('=round(-2.49)');
$this->assertSame(-2.0, $formula->evaluate());
$formula = new calc_formula('=round(-1.5)');
$this->assertSame(-2.0, $formula->evaluate());
$formula = new calc_formula('=round(-2.5)');
$this->assertSame(-3.0, $formula->evaluate());
$formula = new calc_formula('=ceil(2.5)');
$this->assertSame(3.0, $formula->evaluate());
$formula = new calc_formula('=ceil(1.5)');
$this->assertSame(2.0, $formula->evaluate());
$formula = new calc_formula('=ceil(-1.49)');
$this->assertSame(-1.0, $formula->evaluate());
$formula = new calc_formula('=ceil(-2.49)');
$this->assertSame(-2.0, $formula->evaluate());
$formula = new calc_formula('=ceil(-1.5)');
$this->assertSame(-1.0, $formula->evaluate());
$formula = new calc_formula('=ceil(-2.5)');
$this->assertSame(-2.0, $formula->evaluate());
$formula = new calc_formula('=floor(2.5)');
$this->assertSame(2.0, $formula->evaluate());
$formula = new calc_formula('=floor(1.5)');
$this->assertSame(1.0, $formula->evaluate());
$formula = new calc_formula('=floor(-1.49)');
$this->assertSame(-2.0, $formula->evaluate());
$formula = new calc_formula('=floor(-2.49)');
$this->assertSame(-3.0, $formula->evaluate());
$formula = new calc_formula('=floor(-1.5)');
$this->assertSame(-2.0, $formula->evaluate());
$formula = new calc_formula('=floor(-2.5)');
$this->assertSame(-3.0, $formula->evaluate());
// Rounding to an explicit number of decimal places.
$formula = new calc_formula('=round(2.5, 1)');
$this->assertSame(2.5, $formula->evaluate());
$formula = new calc_formula('=round(2.5, 0)');
$this->assertSame(3.0, $formula->evaluate());
$formula = new calc_formula('=round(1.2345, 2)');
$this->assertSame(1.23, $formula->evaluate());
$formula = new calc_formula('=round(123.456, -1)');
$this->assertSame(120.0, $formula->evaluate());
}
public function test_scientific_notation() {
$formula = new calc_formula('=10e10');
$this->assertEquals(1e11, $formula->evaluate(), '', 1e11*1e-15);
$formula = new calc_formula('=10e-10');
$this->assertEquals(1e-9, $formula->evaluate(), '', 1e11*1e-15);
$formula = new calc_formula('=10e+10');
$this->assertEquals(1e11, $formula->evaluate(), '', 1e11*1e-15);
$formula = new calc_formula('=10e10*5');
$this->assertEquals(5e11, $formula->evaluate(), '', 1e11*1e-15);
$formula = new calc_formula('=10e10^2');
$this->assertEquals(1e22, $formula->evaluate(), '', 1e22*1e-15);
}
public function test_rand_float() {
$formula = new calc_formula('=rand_float()');
$result = $formula->evaluate();
$this->assertTrue(is_float($result));
}
}