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Differences Between: [Versions 310 and 401] [Versions 39 and 401] [Versions 401 and 402] [Versions 401 and 403]
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 core; 18 19 use calc_formula; 20 21 defined('MOODLE_INTERNAL') || die(); 22 23 global $CFG; 24 require_once($CFG->libdir . '/mathslib.php'); 25 26 /** 27 * Unit tests of mathslib wrapper and underlying EvalMath library. 28 * 29 * @package core 30 * @category phpunit 31 * @copyright 2007 Petr Skoda {@link http://skodak.org} 32 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later 33 */ 34 class mathslib_test extends \basic_testcase { 35 36 /** 37 * Tests the basic formula evaluation. 38 */ 39 public function test__basic() { 40 $formula = new calc_formula('=1+2'); 41 $res = $formula->evaluate(); 42 $this->assertSame($res, 3, '3+1 is: %s'); 43 } 44 45 /** 46 * Tests the formula params. 47 */ 48 public function test__params() { 49 $formula = new calc_formula('=a+b+c', array('a'=>10, 'b'=>20, 'c'=>30)); 50 $res = $formula->evaluate(); 51 $this->assertSame(60, $res, '10+20+30 is: %s'); 52 } 53 54 /** 55 * Tests the changed params. 56 */ 57 public function test__changing_params() { 58 $formula = new calc_formula('=a+b+c', array('a'=>10, 'b'=>20, 'c'=>30)); 59 $res = $formula->evaluate(); 60 $this->assertSame(60, $res, '10+20+30 is: %s'); 61 $formula->set_params(array('a'=>1, 'b'=>2, 'c'=>3)); 62 $res = $formula->evaluate(); 63 $this->assertSame(6, $res, 'changed params 1+2+3 is: %s'); 64 } 65 66 /** 67 * Tests the spreadsheet emulation function in formula. 68 */ 69 public function test__calc_function() { 70 $formula = new calc_formula('=sum(a, b, c)', array('a'=>10, 'b'=>20, 'c'=>30)); 71 $res = $formula->evaluate(); 72 $this->assertSame(60, $res, 'sum(a, b, c) is: %s'); 73 } 74 75 public function test_other_functions() { 76 $formula = new calc_formula('=average(1,2,3)'); 77 $this->assertSame(2, $formula->evaluate()); 78 79 $formula = new calc_formula('=mod(10,3)'); 80 $this->assertSame(1, $formula->evaluate()); 81 82 $formula = new calc_formula('=power(2,3)'); 83 $this->assertSame(8, $formula->evaluate()); 84 } 85 86 public function test_conditional_functions() { 87 // Test ifthenelse. 88 $formula = new calc_formula('=ifthenelse(1,2,3)'); 89 $this->assertSame(2, (int)$formula->evaluate()); 90 91 $formula = new calc_formula('=ifthenelse(0,2,3)'); 92 $this->assertSame(3, (int) $formula->evaluate()); 93 94 $formula = new calc_formula('=ifthenelse(2<3,2,3)'); 95 $this->assertSame(2, (int) $formula->evaluate()); 96 97 // Test synonym if. 98 $formula = new calc_formula('=if(1,2,3)'); 99 $this->assertSame(2, (int)$formula->evaluate()); 100 101 $formula = new calc_formula('=if(0,2,3)'); 102 $this->assertSame(3, (int) $formula->evaluate()); 103 104 $formula = new calc_formula('=if(2<3,2,3)'); 105 $this->assertSame(2, (int) $formula->evaluate()); 106 107 // Test cond_and. 108 $formula = new calc_formula('=cond_and(1,1,1)'); 109 $this->assertSame(1, (int)$formula->evaluate()); 110 111 $formula = new calc_formula('=cond_and(1,1,0)'); 112 $this->assertSame(0, (int) $formula->evaluate()); 113 114 $formula = new calc_formula('=cond_and(0,0,0)'); 115 $this->assertSame(0, (int) $formula->evaluate()); 116 117 // Test synonym and. 118 $formula = new calc_formula('=and(1,1,1)'); 119 $this->assertSame(1, (int)$formula->evaluate()); 120 121 $formula = new calc_formula('=and(1,1,0)'); 122 $this->assertSame(0, (int) $formula->evaluate()); 123 124 $formula = new calc_formula('=and(0,0,0)'); 125 $this->assertSame(0, (int) $formula->evaluate()); 126 127 // Test cond_or. 128 $formula = new calc_formula('=cond_or(1,1,1)'); 129 $this->assertSame(1, (int)$formula->evaluate()); 130 131 $formula = new calc_formula('=cond_or(1,1,0)'); 132 $this->assertSame(1, (int) $formula->evaluate()); 133 134 $formula = new calc_formula('=cond_or(0,0,0)'); 135 $this->assertSame(0, (int) $formula->evaluate()); 136 137 // Test synonym or. 138 $formula = new calc_formula('=or(1,1,1)'); 139 $this->assertSame(1, (int)$formula->evaluate()); 140 141 $formula = new calc_formula('=or(1,1,0)'); 142 $this->assertSame(1, (int) $formula->evaluate()); 143 144 $formula = new calc_formula('=or(0,0,0)'); 145 $this->assertSame(0, (int) $formula->evaluate()); 146 } 147 148 public function test_conditional_operators() { 149 $formula = new calc_formula('=2==2'); 150 $this->assertSame(1, $formula->evaluate()); 151 152 $formula = new calc_formula('=2>3'); 153 $this->assertSame(0, $formula->evaluate()); 154 $formula = new calc_formula('=2<3'); 155 $this->assertSame(1, $formula->evaluate()); 156 157 $formula = new calc_formula('=(2<=3)'); 158 $this->assertSame(1, $formula->evaluate()); 159 160 $formula = new calc_formula('=(2<=3)*10'); 161 $this->assertSame(10, $formula->evaluate()); 162 163 $formula = new calc_formula('=(2>=3)*10'); 164 $this->assertSame(0, $formula->evaluate()); 165 $formula = new calc_formula('=2<3*10'); 166 $this->assertSame(10, $formula->evaluate()); 167 } 168 /** 169 * Tests the min and max functions. 170 */ 171 public function test__minmax_function() { 172 $formula = new calc_formula('=min(a, b, c)', array('a'=>10, 'b'=>20, 'c'=>30)); 173 $res = $formula->evaluate(); 174 $this->assertSame(10, $res, 'minimum is: %s'); 175 $formula = new calc_formula('=max(a, b, c)', array('a'=>10, 'b'=>20, 'c'=>30)); 176 $res = $formula->evaluate(); 177 $this->assertSame(30, $res, 'maximum is: %s'); 178 } 179 180 /** 181 * Tests special chars. 182 */ 183 public function test__specialchars() { 184 $formula = new calc_formula('=gi1 + gi2 + gi11', array('gi1'=>10, 'gi2'=>20, 'gi11'=>30)); 185 $res = $formula->evaluate(); 186 $this->assertSame(60, $res, 'sum is: %s'); 187 } 188 189 /** 190 * Tests some slightly more complex expressions. 191 */ 192 public function test__more_complex_expressions() { 193 $formula = new calc_formula('=pi() + a', array('a'=>10)); 194 $res = $formula->evaluate(); 195 $this->assertSame(pi()+10, $res); 196 $formula = new calc_formula('=pi()^a', array('a'=>10)); 197 $res = $formula->evaluate(); 198 $this->assertSame(pow(pi(), 10), $res); 199 $formula = new calc_formula('=-8*(5/2)^2*(1-sqrt(4))-8'); 200 $res = $formula->evaluate(); 201 $this->assertSame(-8*pow((5/2), 2)*(1-sqrt(4))-8, $res); 202 } 203 204 /** 205 * Tests some slightly more complex expressions. 206 */ 207 public function test__error_handling() { 208 $formula = new calc_formula('=pi( + a', array('a'=>10)); 209 $res = $formula->evaluate(); 210 $this->assertFalse($res); 211 $this->assertSame(get_string('unexpectedoperator', 'mathslib', '+'), $formula->get_error()); 212 213 $formula = new calc_formula('=pi('); 214 $res = $formula->evaluate(); 215 $this->assertSame($res, false); 216 $this->assertSame(get_string('expectingaclosingbracket', 'mathslib'), $formula->get_error()); 217 218 $formula = new calc_formula('=pi()^'); 219 $res = $formula->evaluate(); 220 $this->assertSame($res, false); 221 $this->assertSame(get_string('operatorlacksoperand', 'mathslib', '^'), $formula->get_error()); 222 223 } 224 225 public function test_rounding_function() { 226 // Rounding to the default number of decimal places. 227 // The default == 0. 228 229 $formula = new calc_formula('=round(2.5)'); 230 $this->assertSame(3.0, $formula->evaluate()); 231 232 $formula = new calc_formula('=round(1.5)'); 233 $this->assertSame(2.0, $formula->evaluate()); 234 235 $formula = new calc_formula('=round(-1.49)'); 236 $this->assertSame(-1.0, $formula->evaluate()); 237 238 $formula = new calc_formula('=round(-2.49)'); 239 $this->assertSame(-2.0, $formula->evaluate()); 240 241 $formula = new calc_formula('=round(-1.5)'); 242 $this->assertSame(-2.0, $formula->evaluate()); 243 244 $formula = new calc_formula('=round(-2.5)'); 245 $this->assertSame(-3.0, $formula->evaluate()); 246 247 $formula = new calc_formula('=ceil(2.5)'); 248 $this->assertSame(3.0, $formula->evaluate()); 249 250 $formula = new calc_formula('=ceil(1.5)'); 251 $this->assertSame(2.0, $formula->evaluate()); 252 253 $formula = new calc_formula('=ceil(-1.49)'); 254 $this->assertSame(-1.0, $formula->evaluate()); 255 256 $formula = new calc_formula('=ceil(-2.49)'); 257 $this->assertSame(-2.0, $formula->evaluate()); 258 259 $formula = new calc_formula('=ceil(-1.5)'); 260 $this->assertSame(-1.0, $formula->evaluate()); 261 262 $formula = new calc_formula('=ceil(-2.5)'); 263 $this->assertSame(-2.0, $formula->evaluate()); 264 265 $formula = new calc_formula('=floor(2.5)'); 266 $this->assertSame(2.0, $formula->evaluate()); 267 268 $formula = new calc_formula('=floor(1.5)'); 269 $this->assertSame(1.0, $formula->evaluate()); 270 271 $formula = new calc_formula('=floor(-1.49)'); 272 $this->assertSame(-2.0, $formula->evaluate()); 273 274 $formula = new calc_formula('=floor(-2.49)'); 275 $this->assertSame(-3.0, $formula->evaluate()); 276 277 $formula = new calc_formula('=floor(-1.5)'); 278 $this->assertSame(-2.0, $formula->evaluate()); 279 280 $formula = new calc_formula('=floor(-2.5)'); 281 $this->assertSame(-3.0, $formula->evaluate()); 282 283 // Rounding to an explicit number of decimal places. 284 285 $formula = new calc_formula('=round(2.5, 1)'); 286 $this->assertSame(2.5, $formula->evaluate()); 287 288 $formula = new calc_formula('=round(2.5, 0)'); 289 $this->assertSame(3.0, $formula->evaluate()); 290 291 $formula = new calc_formula('=round(1.2345, 2)'); 292 $this->assertSame(1.23, $formula->evaluate()); 293 294 $formula = new calc_formula('=round(123.456, -1)'); 295 $this->assertSame(120.0, $formula->evaluate()); 296 } 297 298 public function test_scientific_notation() { 299 $formula = new calc_formula('=10e10'); 300 $this->assertEqualsWithDelta(1e11, $formula->evaluate(), 1e11 * 1e-15); 301 302 $formula = new calc_formula('=10e-10'); 303 $this->assertEqualsWithDelta(1e-9, $formula->evaluate(), 1e11 * 1e-15); 304 305 $formula = new calc_formula('=10e+10'); 306 $this->assertEqualsWithDelta(1e11, $formula->evaluate(), 1e11 * 1e-15); 307 308 $formula = new calc_formula('=10e10*5'); 309 $this->assertEqualsWithDelta(5e11, $formula->evaluate(), 1e11 * 1e-15); 310 311 $formula = new calc_formula('=10e10^2'); 312 $this->assertEqualsWithDelta(1e22, $formula->evaluate(), 1e22 * 1e-15); 313 } 314 315 public function test_rand_float() { 316 $formula = new calc_formula('=rand_float()'); 317 $result = $formula->evaluate(); 318 $this->assertTrue(is_float($result)); 319 } 320 }
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