1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 package org.apache.harmony.tests.java.math; 19 20 import java.io.ByteArrayInputStream; 21 import java.io.ByteArrayOutputStream; 22 import java.io.ObjectInputStream; 23 import java.io.ObjectOutputStream; 24 import java.math.BigDecimal; 25 import java.math.BigInteger; 26 import java.math.MathContext; 27 import java.math.RoundingMode; 28 29 30 public class BigDecimalTest extends junit.framework.TestCase { 31 BigInteger value = new BigInteger("12345908"); 32 33 BigInteger value2 = new BigInteger("12334560000"); 34 35 /** 36 * @tests java.math.BigDecimal#BigDecimal(java.math.BigInteger) 37 */ 38 public void test_ConstructorLjava_math_BigInteger() { 39 BigDecimal big = new BigDecimal(value); 40 assertTrue("the BigDecimal value is not initialized properly", big 41 .unscaledValue().equals(value) 42 && big.scale() == 0); 43 } 44 45 /** 46 * @tests java.math.BigDecimal#BigDecimal(java.math.BigInteger, int) 47 */ 48 public void test_ConstructorLjava_math_BigIntegerI() { 49 BigDecimal big = new BigDecimal(value2, 5); 50 assertTrue("the BigDecimal value is not initialized properly", big 51 .unscaledValue().equals(value2) 52 && big.scale() == 5); 53 assertTrue("the BigDecimal value is not represented properly", big 54 .toString().equals("123345.60000")); 55 } 56 57 /** 58 * @tests java.math.BigDecimal#BigDecimal(double) 59 */ 60 public void test_ConstructorD() { 61 BigDecimal big = new BigDecimal(123E04); 62 assertTrue( 63 "the BigDecimal value taking a double argument is not initialized properly", 64 big.toString().equals("1230000")); 65 big = new BigDecimal(1.2345E-12); 66 assertTrue("the double representation is not correct", big 67 .doubleValue() == 1.2345E-12); 68 big = new BigDecimal(-12345E-3); 69 assertTrue("the double representation is not correct", big 70 .doubleValue() == -12.345); 71 big = new BigDecimal(5.1234567897654321e138); 72 assertTrue("the double representation is not correct", big 73 .doubleValue() == 5.1234567897654321E138 74 && big.scale() == 0); 75 big = new BigDecimal(0.1); 76 assertTrue( 77 "the double representation of 0.1 bigDecimal is not correct", 78 big.doubleValue() == 0.1); 79 big = new BigDecimal(0.00345); 80 assertTrue( 81 "the double representation of 0.00345 bigDecimal is not correct", 82 big.doubleValue() == 0.00345); 83 // regression test for HARMONY-2429 84 big = new BigDecimal(-0.0); 85 assertTrue( 86 "the double representation of -0.0 bigDecimal is not correct", 87 big.scale() == 0); 88 } 89 90 /** 91 * @tests java.math.BigDecimal#BigDecimal(java.lang.String) 92 */ 93 public void test_ConstructorLjava_lang_String() throws NumberFormatException { 94 BigDecimal big = new BigDecimal("345.23499600293850"); 95 assertTrue("the BigDecimal value is not initialized properly", big 96 .toString().equals("345.23499600293850") 97 && big.scale() == 14); 98 big = new BigDecimal("-12345"); 99 assertTrue("the BigDecimal value is not initialized properly", big 100 .toString().equals("-12345") 101 && big.scale() == 0); 102 big = new BigDecimal("123."); 103 assertTrue("the BigDecimal value is not initialized properly", big 104 .toString().equals("123") 105 && big.scale() == 0); 106 107 new BigDecimal("1.234E02"); 108 } 109 110 /** 111 * @tests java.math.BigDecimal#BigDecimal(java.lang.String) 112 */ 113 public void test_constructor_String_plus_exp() { 114 /* 115 * BigDecimal does not support a + sign in the exponent when converting 116 * from a String 117 */ 118 new BigDecimal(+23e-0); 119 new BigDecimal(-23e+0); 120 } 121 122 /** 123 * @tests java.math.BigDecimal#BigDecimal(java.lang.String) 124 */ 125 public void test_constructor_String_empty() { 126 try { 127 new BigDecimal(""); 128 fail("NumberFormatException expected"); 129 } catch (NumberFormatException e) { 130 } 131 } 132 133 /** 134 * @tests java.math.BigDecimal#BigDecimal(java.lang.String) 135 */ 136 public void test_constructor_String_plus_minus_exp() { 137 try { 138 new BigDecimal("+35e+-2"); 139 fail("NumberFormatException expected"); 140 } catch (NumberFormatException e) { 141 } 142 143 try { 144 new BigDecimal("-35e-+2"); 145 fail("NumberFormatException expected"); 146 } catch (NumberFormatException e) { 147 } 148 } 149 150 /** 151 * @tests java.math.BigDecimal#BigDecimal(char[]) 152 */ 153 public void test_constructor_CC_plus_minus_exp() { 154 try { 155 new BigDecimal("+35e+-2".toCharArray()); 156 fail("NumberFormatException expected"); 157 } catch (NumberFormatException e) { 158 } 159 160 try { 161 new BigDecimal("-35e-+2".toCharArray()); 162 fail("NumberFormatException expected"); 163 } catch (NumberFormatException e) { 164 } 165 } 166 167 /** 168 * @tests java.math.BigDecimal#abs() 169 */ 170 public void test_abs() { 171 BigDecimal big = new BigDecimal("-1234"); 172 BigDecimal bigabs = big.abs(); 173 assertTrue("the absolute value of -1234 is not 1234", bigabs.toString() 174 .equals("1234")); 175 big = new BigDecimal(new BigInteger("2345"), 2); 176 bigabs = big.abs(); 177 assertTrue("the absolute value of 23.45 is not 23.45", bigabs 178 .toString().equals("23.45")); 179 } 180 181 /** 182 * @tests java.math.BigDecimal#add(java.math.BigDecimal) 183 */ 184 public void test_addLjava_math_BigDecimal() { 185 BigDecimal add1 = new BigDecimal("23.456"); 186 BigDecimal add2 = new BigDecimal("3849.235"); 187 BigDecimal sum = add1.add(add2); 188 assertTrue("the sum of 23.456 + 3849.235 is wrong", sum.unscaledValue() 189 .toString().equals("3872691") 190 && sum.scale() == 3); 191 assertTrue("the sum of 23.456 + 3849.235 is not printed correctly", sum 192 .toString().equals("3872.691")); 193 BigDecimal add3 = new BigDecimal(12.34E02D); 194 assertTrue("the sum of 23.456 + 12.34E02 is not printed correctly", 195 (add1.add(add3)).toString().equals("1257.456")); 196 } 197 198 /** 199 * @tests java.math.BigDecimal#compareTo(java.math.BigDecimal) 200 */ 201 public void test_compareToLjava_math_BigDecimal() { 202 BigDecimal comp1 = new BigDecimal("1.00"); 203 BigDecimal comp2 = new BigDecimal(1.000000D); 204 assertTrue("1.00 and 1.000000 should be equal", 205 comp1.compareTo(comp2) == 0); 206 BigDecimal comp3 = new BigDecimal("1.02"); 207 assertTrue("1.02 should be bigger than 1.00", 208 comp3.compareTo(comp1) == 1); 209 BigDecimal comp4 = new BigDecimal(0.98D); 210 assertTrue("0.98 should be less than 1.00", 211 comp4.compareTo(comp1) == -1); 212 } 213 214 /** 215 * @tests java.math.BigDecimal#divide(java.math.BigDecimal, int) 216 */ 217 public void test_divideLjava_math_BigDecimalI() { 218 BigDecimal divd1 = new BigDecimal(value, 2); 219 BigDecimal divd2 = new BigDecimal("2.335"); 220 BigDecimal divd3 = divd1.divide(divd2, BigDecimal.ROUND_UP); 221 assertTrue("123459.08/2.335 is not correct", divd3.toString().equals( 222 "52873.27") 223 && divd3.scale() == divd1.scale()); 224 assertTrue( 225 "the unscaledValue representation of 123459.08/2.335 is not correct", 226 divd3.unscaledValue().toString().equals("5287327")); 227 divd2 = new BigDecimal(123.4D); 228 divd3 = divd1.divide(divd2, BigDecimal.ROUND_DOWN); 229 assertTrue("123459.08/123.4 is not correct", divd3.toString().equals( 230 "1000.47") 231 && divd3.scale() == 2); 232 divd2 = new BigDecimal(000D); 233 234 try { 235 divd1.divide(divd2, BigDecimal.ROUND_DOWN); 236 fail("divide by zero is not caught"); 237 } catch (ArithmeticException e) { 238 } 239 } 240 241 /** 242 * @tests java.math.BigDecimal#divide(java.math.BigDecimal, int, int) 243 */ 244 public void test_divideLjava_math_BigDecimalII() { 245 BigDecimal divd1 = new BigDecimal(value2, 4); 246 BigDecimal divd2 = new BigDecimal("0.0023"); 247 BigDecimal divd3 = divd1.divide(divd2, 3, BigDecimal.ROUND_HALF_UP); 248 assertTrue("1233456/0.0023 is not correct", divd3.toString().equals( 249 "536285217.391") 250 && divd3.scale() == 3); 251 divd2 = new BigDecimal(1345.5E-02D); 252 divd3 = divd1.divide(divd2, 0, BigDecimal.ROUND_DOWN); 253 assertTrue( 254 "1233456/13.455 is not correct or does not have the correct scale", 255 divd3.toString().equals("91672") && divd3.scale() == 0); 256 divd2 = new BigDecimal(0000D); 257 258 try { 259 divd1.divide(divd2, 4, BigDecimal.ROUND_DOWN); 260 fail("divide by zero is not caught"); 261 } catch (ArithmeticException e) { 262 } 263 } 264 265 /** 266 * @tests java.math.BigDecimal#doubleValue() 267 */ 268 public void test_doubleValue() { 269 BigDecimal bigDB = new BigDecimal(-1.234E-112); 270 // Commenting out this part because it causes an endless loop (see HARMONY-319 and HARMONY-329) 271 // assertTrue( 272 // "the double representation of this BigDecimal is not correct", 273 // bigDB.doubleValue() == -1.234E-112); 274 bigDB = new BigDecimal(5.00E-324); 275 assertTrue("the double representation of bigDecimal is not correct", 276 bigDB.doubleValue() == 5.00E-324); 277 bigDB = new BigDecimal(1.79E308); 278 assertTrue("the double representation of bigDecimal is not correct", 279 bigDB.doubleValue() == 1.79E308 && bigDB.scale() == 0); 280 bigDB = new BigDecimal(-2.33E102); 281 assertTrue( 282 "the double representation of bigDecimal -2.33E102 is not correct", 283 bigDB.doubleValue() == -2.33E102 && bigDB.scale() == 0); 284 bigDB = new BigDecimal(Double.MAX_VALUE); 285 bigDB = bigDB.add(bigDB); 286 assertTrue( 287 "a + number out of the double range should return infinity", 288 bigDB.doubleValue() == Double.POSITIVE_INFINITY); 289 bigDB = new BigDecimal(-Double.MAX_VALUE); 290 bigDB = bigDB.add(bigDB); 291 assertTrue( 292 "a - number out of the double range should return neg infinity", 293 bigDB.doubleValue() == Double.NEGATIVE_INFINITY); 294 } 295 296 /** 297 * @tests java.math.BigDecimal#equals(java.lang.Object) 298 */ 299 public void test_equalsLjava_lang_Object() { 300 BigDecimal equal1 = new BigDecimal(1.00D); 301 BigDecimal equal2 = new BigDecimal("1.0"); 302 assertFalse("1.00 and 1.0 should not be equal", 303 equal1.equals(equal2)); 304 equal2 = new BigDecimal(1.01D); 305 assertFalse("1.00 and 1.01 should not be equal", 306 equal1.equals(equal2)); 307 equal2 = new BigDecimal("1.00"); 308 assertFalse("1.00D and 1.00 should not be equal", 309 equal1.equals(equal2)); 310 BigInteger val = new BigInteger("100"); 311 equal1 = new BigDecimal("1.00"); 312 equal2 = new BigDecimal(val, 2); 313 assertTrue("1.00(string) and 1.00(bigInteger) should be equal", equal1 314 .equals(equal2)); 315 equal1 = new BigDecimal(100D); 316 equal2 = new BigDecimal("2.34576"); 317 assertFalse("100D and 2.34576 should not be equal", equal1 318 .equals(equal2)); 319 assertFalse("bigDecimal 100D does not equal string 23415", equal1 320 .equals("23415")); 321 } 322 323 /** 324 * @tests java.math.BigDecimal#floatValue() 325 */ 326 public void test_floatValue() { 327 BigDecimal fl1 = new BigDecimal("234563782344567"); 328 assertTrue("the float representation of bigDecimal 234563782344567", 329 fl1.floatValue() == 234563782344567f); 330 BigDecimal fl2 = new BigDecimal(2.345E37); 331 assertTrue("the float representation of bigDecimal 2.345E37", fl2 332 .floatValue() == 2.345E37F); 333 fl2 = new BigDecimal(-1.00E-44); 334 assertTrue("the float representation of bigDecimal -1.00E-44", fl2 335 .floatValue() == -1.00E-44F); 336 fl2 = new BigDecimal(-3E12); 337 assertTrue("the float representation of bigDecimal -3E12", fl2 338 .floatValue() == -3E12F); 339 fl2 = new BigDecimal(Double.MAX_VALUE); 340 assertTrue( 341 "A number can't be represented by float should return infinity", 342 fl2.floatValue() == Float.POSITIVE_INFINITY); 343 fl2 = new BigDecimal(-Double.MAX_VALUE); 344 assertTrue( 345 "A number can't be represented by float should return infinity", 346 fl2.floatValue() == Float.NEGATIVE_INFINITY); 347 348 } 349 350 /** 351 * @tests java.math.BigDecimal#hashCode() 352 */ 353 public void test_hashCode() { 354 // anything that is equal must have the same hashCode 355 BigDecimal hash = new BigDecimal("1.00"); 356 BigDecimal hash2 = new BigDecimal(1.00D); 357 assertTrue("the hashCode of 1.00 and 1.00D is equal", 358 hash.hashCode() != hash2.hashCode() && !hash.equals(hash2)); 359 hash2 = new BigDecimal("1.0"); 360 assertTrue("the hashCode of 1.0 and 1.00 is equal", 361 hash.hashCode() != hash2.hashCode() && !hash.equals(hash2)); 362 BigInteger val = new BigInteger("100"); 363 hash2 = new BigDecimal(val, 2); 364 assertTrue("hashCode of 1.00 and 1.00(bigInteger) is not equal", hash 365 .hashCode() == hash2.hashCode() 366 && hash.equals(hash2)); 367 hash = new BigDecimal(value, 2); 368 hash2 = new BigDecimal("-1233456.0000"); 369 assertTrue("hashCode of 123459.08 and -1233456.0000 is not equal", hash 370 .hashCode() != hash2.hashCode() 371 && !hash.equals(hash2)); 372 hash2 = new BigDecimal(value.negate(), 2); 373 assertTrue("hashCode of 123459.08 and -123459.08 is not equal", hash 374 .hashCode() != hash2.hashCode() 375 && !hash.equals(hash2)); 376 } 377 378 /** 379 * @tests java.math.BigDecimal#intValue() 380 */ 381 public void test_intValue() { 382 BigDecimal int1 = new BigDecimal(value, 3); 383 assertTrue("the int value of 12345.908 is not 12345", 384 int1.intValue() == 12345); 385 int1 = new BigDecimal("1.99"); 386 assertTrue("the int value of 1.99 is not 1", int1.intValue() == 1); 387 int1 = new BigDecimal("23423419083091823091283933"); 388 // ran JDK and found representation for the above was -249268259 389 assertTrue("the int value of 23423419083091823091283933 is wrong", int1 390 .intValue() == -249268259); 391 int1 = new BigDecimal(-1235D); 392 assertTrue("the int value of -1235 is not -1235", 393 int1.intValue() == -1235); 394 } 395 396 /** 397 * @tests java.math.BigDecimal#longValue() 398 */ 399 public void test_longValue() { 400 BigDecimal long1 = new BigDecimal(value2.negate(), 0); 401 assertTrue("the long value of 12334560000 is not 12334560000", long1 402 .longValue() == -12334560000L); 403 long1 = new BigDecimal(-1345.348E-123D); 404 assertTrue("the long value of -1345.348E-123D is not zero", long1 405 .longValue() == 0); 406 long1 = new BigDecimal("31323423423419083091823091283933"); 407 // ran JDK and found representation for the above was 408 // -5251313250005125155 409 assertTrue( 410 "the long value of 31323423423419083091823091283933 is wrong", 411 long1.longValue() == -5251313250005125155L); 412 } 413 414 /** 415 * @tests java.math.BigDecimal#max(java.math.BigDecimal) 416 */ 417 public void test_maxLjava_math_BigDecimal() { 418 BigDecimal max1 = new BigDecimal(value2, 1); 419 BigDecimal max2 = new BigDecimal(value2, 4); 420 assertTrue("1233456000.0 is not greater than 1233456", max1.max(max2) 421 .equals(max1)); 422 max1 = new BigDecimal(-1.224D); 423 max2 = new BigDecimal(-1.2245D); 424 assertTrue("-1.224 is not greater than -1.2245", max1.max(max2).equals( 425 max1)); 426 max1 = new BigDecimal(123E18); 427 max2 = new BigDecimal(123E19); 428 assertTrue("123E19 is the not the max", max1.max(max2).equals(max2)); 429 } 430 431 /** 432 * @tests java.math.BigDecimal#min(java.math.BigDecimal) 433 */ 434 public void test_minLjava_math_BigDecimal() { 435 BigDecimal min1 = new BigDecimal(-12345.4D); 436 BigDecimal min2 = new BigDecimal(-12345.39D); 437 assertTrue("-12345.39 should have been returned", min1.min(min2) 438 .equals(min1)); 439 min1 = new BigDecimal(value2, 5); 440 min2 = new BigDecimal(value2, 0); 441 assertTrue("123345.6 should have been returned", min1.min(min2).equals( 442 min1)); 443 } 444 445 /** 446 * @tests java.math.BigDecimal#movePointLeft(int) 447 */ 448 public void test_movePointLeftI() { 449 BigDecimal movePtLeft = new BigDecimal("123456265.34"); 450 BigDecimal alreadyMoved = movePtLeft.movePointLeft(5); 451 assertTrue("move point left 5 failed", alreadyMoved.scale() == 7 452 && alreadyMoved.toString().equals("1234.5626534")); 453 movePtLeft = new BigDecimal(value2.negate(), 0); 454 alreadyMoved = movePtLeft.movePointLeft(12); 455 assertTrue("move point left 12 failed", alreadyMoved.scale() == 12 456 && alreadyMoved.toString().equals("-0.012334560000")); 457 movePtLeft = new BigDecimal(123E18); 458 alreadyMoved = movePtLeft.movePointLeft(2); 459 assertTrue("move point left 2 failed", 460 alreadyMoved.scale() == movePtLeft.scale() + 2 461 && alreadyMoved.doubleValue() == 1.23E18); 462 movePtLeft = new BigDecimal(1.123E-12); 463 alreadyMoved = movePtLeft.movePointLeft(3); 464 assertTrue("move point left 3 failed", 465 alreadyMoved.scale() == movePtLeft.scale() + 3 466 && alreadyMoved.doubleValue() == 1.123E-15); 467 movePtLeft = new BigDecimal(value, 2); 468 alreadyMoved = movePtLeft.movePointLeft(-2); 469 assertTrue("move point left -2 failed", 470 alreadyMoved.scale() == movePtLeft.scale() - 2 471 && alreadyMoved.toString().equals("12345908")); 472 } 473 474 /** 475 * @tests java.math.BigDecimal#movePointRight(int) 476 */ 477 public void test_movePointRightI() { 478 BigDecimal movePtRight = new BigDecimal("-1.58796521458"); 479 BigDecimal alreadyMoved = movePtRight.movePointRight(8); 480 assertTrue("move point right 8 failed", alreadyMoved.scale() == 3 481 && alreadyMoved.toString().equals("-158796521.458")); 482 movePtRight = new BigDecimal(value, 2); 483 alreadyMoved = movePtRight.movePointRight(4); 484 assertTrue("move point right 4 failed", alreadyMoved.scale() == 0 485 && alreadyMoved.toString().equals("1234590800")); 486 movePtRight = new BigDecimal(134E12); 487 alreadyMoved = movePtRight.movePointRight(2); 488 assertTrue("move point right 2 failed", alreadyMoved.scale() == 0 489 && alreadyMoved.toString().equals("13400000000000000")); 490 movePtRight = new BigDecimal(-3.4E-10); 491 alreadyMoved = movePtRight.movePointRight(5); 492 assertTrue("move point right 5 failed", 493 alreadyMoved.scale() == movePtRight.scale() - 5 494 && alreadyMoved.doubleValue() == -0.000034); 495 alreadyMoved = alreadyMoved.movePointRight(-5); 496 assertTrue("move point right -5 failed", alreadyMoved 497 .equals(movePtRight)); 498 } 499 500 /** 501 * @tests java.math.BigDecimal#multiply(java.math.BigDecimal) 502 */ 503 public void test_multiplyLjava_math_BigDecimal() { 504 BigDecimal multi1 = new BigDecimal(value, 5); 505 BigDecimal multi2 = new BigDecimal(2.345D); 506 BigDecimal result = multi1.multiply(multi2); 507 assertTrue("123.45908 * 2.345 is not correct: " + result, result 508 .toString().startsWith("289.51154260") 509 && result.scale() == multi1.scale() + multi2.scale()); 510 multi1 = new BigDecimal("34656"); 511 multi2 = new BigDecimal("-2"); 512 result = multi1.multiply(multi2); 513 assertTrue("34656 * 2 is not correct", result.toString().equals( 514 "-69312") 515 && result.scale() == 0); 516 multi1 = new BigDecimal(-2.345E-02); 517 multi2 = new BigDecimal(-134E130); 518 result = multi1.multiply(multi2); 519 assertTrue("-2.345E-02 * -134E130 is not correct " + result.doubleValue(), 520 result.doubleValue() == 3.1422999999999997E130 521 && result.scale() == multi1.scale() + multi2.scale()); 522 multi1 = new BigDecimal("11235"); 523 multi2 = new BigDecimal("0"); 524 result = multi1.multiply(multi2); 525 assertTrue("11235 * 0 is not correct", result.doubleValue() == 0 526 && result.scale() == 0); 527 multi1 = new BigDecimal("-0.00234"); 528 multi2 = new BigDecimal(13.4E10); 529 result = multi1.multiply(multi2); 530 assertTrue("-0.00234 * 13.4E10 is not correct", 531 result.doubleValue() == -313560000 532 && result.scale() == multi1.scale() + multi2.scale()); 533 } 534 535 /** 536 * @tests java.math.BigDecimal#negate() 537 */ 538 public void test_negate() { 539 BigDecimal negate1 = new BigDecimal(value2, 7); 540 assertTrue("the negate of 1233.4560000 is not -1233.4560000", negate1 541 .negate().toString().equals("-1233.4560000")); 542 negate1 = new BigDecimal("-23465839"); 543 assertTrue("the negate of -23465839 is not 23465839", negate1.negate() 544 .toString().equals("23465839")); 545 negate1 = new BigDecimal(-3.456E6); 546 assertTrue("the negate of -3.456E6 is not 3.456E6", negate1.negate() 547 .negate().equals(negate1)); 548 } 549 550 /** 551 * @tests java.math.BigDecimal#scale() 552 */ 553 public void test_scale() { 554 BigDecimal scale1 = new BigDecimal(value2, 8); 555 assertTrue("the scale of the number 123.34560000 is wrong", scale1 556 .scale() == 8); 557 BigDecimal scale2 = new BigDecimal("29389."); 558 assertTrue("the scale of the number 29389. is wrong", 559 scale2.scale() == 0); 560 BigDecimal scale3 = new BigDecimal(3.374E13); 561 assertTrue("the scale of the number 3.374E13 is wrong", 562 scale3.scale() == 0); 563 BigDecimal scale4 = new BigDecimal("-3.45E-203"); 564 // note the scale is calculated as 15 digits of 345000.... + exponent - 565 // 1. -1 for the 3 566 assertTrue("the scale of the number -3.45E-203 is wrong: " 567 + scale4.scale(), scale4.scale() == 205); 568 scale4 = new BigDecimal("-345.4E-200"); 569 assertTrue("the scale of the number -345.4E-200 is wrong", scale4 570 .scale() == 201); 571 } 572 573 /** 574 * @tests java.math.BigDecimal#setScale(int) 575 */ 576 public void test_setScaleI() { 577 // rounding mode defaults to zero 578 BigDecimal setScale1 = new BigDecimal(value, 3); 579 BigDecimal setScale2 = setScale1.setScale(5); 580 BigInteger setresult = new BigInteger("1234590800"); 581 assertTrue("the number 12345.908 after setting scale is wrong", 582 setScale2.unscaledValue().equals(setresult) 583 && setScale2.scale() == 5); 584 585 try { 586 setScale2 = setScale1.setScale(2, BigDecimal.ROUND_UNNECESSARY); 587 fail("arithmetic Exception not caught as a result of loosing precision"); 588 } catch (ArithmeticException e) { 589 } 590 } 591 592 /** 593 * @tests java.math.BigDecimal#setScale(int, int) 594 */ 595 public void test_setScaleII() { 596 BigDecimal setScale1 = new BigDecimal(2.323E102); 597 BigDecimal setScale2 = setScale1.setScale(4); 598 assertTrue("the number 2.323E102 after setting scale is wrong", 599 setScale2.scale() == 4); 600 assertTrue("the representation of the number 2.323E102 is wrong", 601 setScale2.doubleValue() == 2.323E102); 602 setScale1 = new BigDecimal("-1.253E-12"); 603 setScale2 = setScale1.setScale(17, BigDecimal.ROUND_CEILING); 604 assertTrue("the number -1.253E-12 after setting scale is wrong", 605 setScale2.scale() == 17); 606 assertTrue( 607 "the representation of the number -1.253E-12 after setting scale is wrong, " + setScale2.toString(), 608 setScale2.toString().equals("-1.25300E-12")); 609 610 // testing rounding Mode ROUND_CEILING 611 setScale1 = new BigDecimal(value, 4); 612 setScale2 = setScale1.setScale(1, BigDecimal.ROUND_CEILING); 613 assertTrue( 614 "the number 1234.5908 after setting scale to 1/ROUND_CEILING is wrong", 615 setScale2.toString().equals("1234.6") && setScale2.scale() == 1); 616 BigDecimal setNeg = new BigDecimal(value.negate(), 4); 617 setScale2 = setNeg.setScale(1, BigDecimal.ROUND_CEILING); 618 assertTrue( 619 "the number -1234.5908 after setting scale to 1/ROUND_CEILING is wrong", 620 setScale2.toString().equals("-1234.5") 621 && setScale2.scale() == 1); 622 623 // testing rounding Mode ROUND_DOWN 624 setScale2 = setNeg.setScale(1, BigDecimal.ROUND_DOWN); 625 assertTrue( 626 "the number -1234.5908 after setting scale to 1/ROUND_DOWN is wrong", 627 setScale2.toString().equals("-1234.5") 628 && setScale2.scale() == 1); 629 setScale1 = new BigDecimal(value, 4); 630 setScale2 = setScale1.setScale(1, BigDecimal.ROUND_DOWN); 631 assertTrue( 632 "the number 1234.5908 after setting scale to 1/ROUND_DOWN is wrong", 633 setScale2.toString().equals("1234.5") && setScale2.scale() == 1); 634 635 // testing rounding Mode ROUND_FLOOR 636 setScale2 = setScale1.setScale(1, BigDecimal.ROUND_FLOOR); 637 assertTrue( 638 "the number 1234.5908 after setting scale to 1/ROUND_FLOOR is wrong", 639 setScale2.toString().equals("1234.5") && setScale2.scale() == 1); 640 setScale2 = setNeg.setScale(1, BigDecimal.ROUND_FLOOR); 641 assertTrue( 642 "the number -1234.5908 after setting scale to 1/ROUND_FLOOR is wrong", 643 setScale2.toString().equals("-1234.6") 644 && setScale2.scale() == 1); 645 646 // testing rounding Mode ROUND_HALF_DOWN 647 setScale2 = setScale1.setScale(3, BigDecimal.ROUND_HALF_DOWN); 648 assertTrue( 649 "the number 1234.5908 after setting scale to 3/ROUND_HALF_DOWN is wrong", 650 setScale2.toString().equals("1234.591") 651 && setScale2.scale() == 3); 652 setScale1 = new BigDecimal(new BigInteger("12345000"), 5); 653 setScale2 = setScale1.setScale(1, BigDecimal.ROUND_HALF_DOWN); 654 assertTrue( 655 "the number 123.45908 after setting scale to 1/ROUND_HALF_DOWN is wrong", 656 setScale2.toString().equals("123.4") && setScale2.scale() == 1); 657 setScale2 = new BigDecimal("-1234.5000").setScale(0, 658 BigDecimal.ROUND_HALF_DOWN); 659 assertTrue( 660 "the number -1234.5908 after setting scale to 0/ROUND_HALF_DOWN is wrong", 661 setScale2.toString().equals("-1234") && setScale2.scale() == 0); 662 663 // testing rounding Mode ROUND_HALF_EVEN 664 setScale1 = new BigDecimal(1.2345789D); 665 setScale2 = setScale1.setScale(4, BigDecimal.ROUND_HALF_EVEN); 666 assertTrue( 667 "the number 1.2345789 after setting scale to 4/ROUND_HALF_EVEN is wrong", 668 setScale2.doubleValue() == 1.2346D && setScale2.scale() == 4); 669 setNeg = new BigDecimal(-1.2335789D); 670 setScale2 = setNeg.setScale(2, BigDecimal.ROUND_HALF_EVEN); 671 assertTrue( 672 "the number -1.2335789 after setting scale to 2/ROUND_HALF_EVEN is wrong", 673 setScale2.doubleValue() == -1.23D && setScale2.scale() == 2); 674 setScale2 = new BigDecimal("1.2345000").setScale(3, 675 BigDecimal.ROUND_HALF_EVEN); 676 assertTrue( 677 "the number 1.2345789 after setting scale to 3/ROUND_HALF_EVEN is wrong", 678 setScale2.doubleValue() == 1.234D && setScale2.scale() == 3); 679 setScale2 = new BigDecimal("-1.2345000").setScale(3, 680 BigDecimal.ROUND_HALF_EVEN); 681 assertTrue( 682 "the number -1.2335789 after setting scale to 3/ROUND_HALF_EVEN is wrong", 683 setScale2.doubleValue() == -1.234D && setScale2.scale() == 3); 684 685 // testing rounding Mode ROUND_HALF_UP 686 setScale1 = new BigDecimal("134567.34650"); 687 setScale2 = setScale1.setScale(3, BigDecimal.ROUND_HALF_UP); 688 assertTrue( 689 "the number 134567.34658 after setting scale to 3/ROUND_HALF_UP is wrong", 690 setScale2.toString().equals("134567.347") 691 && setScale2.scale() == 3); 692 setNeg = new BigDecimal("-1234.4567"); 693 setScale2 = setNeg.setScale(0, BigDecimal.ROUND_HALF_UP); 694 assertTrue( 695 "the number -1234.4567 after setting scale to 0/ROUND_HALF_UP is wrong", 696 setScale2.toString().equals("-1234") && setScale2.scale() == 0); 697 698 // testing rounding Mode ROUND_UNNECESSARY 699 try { 700 setScale1.setScale(3, BigDecimal.ROUND_UNNECESSARY); 701 fail("arithmetic Exception not caught for round unnecessary"); 702 } catch (ArithmeticException e) { 703 } 704 705 // testing rounding Mode ROUND_UP 706 setScale1 = new BigDecimal("100000.374"); 707 setScale2 = setScale1.setScale(2, BigDecimal.ROUND_UP); 708 assertTrue( 709 "the number 100000.374 after setting scale to 2/ROUND_UP is wrong", 710 setScale2.toString().equals("100000.38") 711 && setScale2.scale() == 2); 712 setNeg = new BigDecimal(-134.34589D); 713 setScale2 = setNeg.setScale(2, BigDecimal.ROUND_UP); 714 assertTrue( 715 "the number -134.34589 after setting scale to 2/ROUND_UP is wrong", 716 setScale2.doubleValue() == -134.35D && setScale2.scale() == 2); 717 718 // testing invalid rounding modes 719 try { 720 setScale2 = setScale1.setScale(0, -123); 721 fail("IllegalArgumentException is not caught for wrong rounding mode"); 722 } catch (IllegalArgumentException e) { 723 } 724 } 725 726 /** 727 * @tests java.math.BigDecimal#signum() 728 */ 729 public void test_signum() { 730 BigDecimal sign = new BigDecimal(123E-104); 731 assertTrue("123E-104 is not positive in signum()", sign.signum() == 1); 732 sign = new BigDecimal("-1234.3959"); 733 assertTrue("-1234.3959 is not negative in signum()", 734 sign.signum() == -1); 735 sign = new BigDecimal(000D); 736 assertTrue("000D is not zero in signum()", sign.signum() == 0); 737 } 738 739 /** 740 * @tests java.math.BigDecimal#subtract(java.math.BigDecimal) 741 */ 742 public void test_subtractLjava_math_BigDecimal() { 743 BigDecimal sub1 = new BigDecimal("13948"); 744 BigDecimal sub2 = new BigDecimal("2839.489"); 745 BigDecimal result = sub1.subtract(sub2); 746 assertTrue("13948 - 2839.489 is wrong: " + result, result.toString() 747 .equals("11108.511") 748 && result.scale() == 3); 749 BigDecimal result2 = sub2.subtract(sub1); 750 assertTrue("2839.489 - 13948 is wrong", result2.toString().equals( 751 "-11108.511") 752 && result2.scale() == 3); 753 assertTrue("13948 - 2839.489 is not the negative of 2839.489 - 13948", 754 result.equals(result2.negate())); 755 sub1 = new BigDecimal(value, 1); 756 sub2 = new BigDecimal("0"); 757 result = sub1.subtract(sub2); 758 assertTrue("1234590.8 - 0 is wrong", result.equals(sub1)); 759 sub1 = new BigDecimal(1.234E-03); 760 sub2 = new BigDecimal(3.423E-10); 761 result = sub1.subtract(sub2); 762 assertTrue("1.234E-03 - 3.423E-10 is wrong, " + result.doubleValue(), 763 result.doubleValue() == 0.0012339996577); 764 sub1 = new BigDecimal(1234.0123); 765 sub2 = new BigDecimal(1234.0123000); 766 result = sub1.subtract(sub2); 767 assertTrue("1234.0123 - 1234.0123000 is wrong, " + result.doubleValue(), 768 result.doubleValue() == 0.0); 769 } 770 771 /** 772 * @tests java.math.BigDecimal#toBigInteger() 773 */ 774 public void test_toBigInteger() { 775 BigDecimal sub1 = new BigDecimal("-29830.989"); 776 BigInteger result = sub1.toBigInteger(); 777 778 assertTrue("the bigInteger equivalent of -29830.989 is wrong", result 779 .toString().equals("-29830")); 780 sub1 = new BigDecimal(-2837E10); 781 result = sub1.toBigInteger(); 782 assertTrue("the bigInteger equivalent of -2837E10 is wrong", result 783 .doubleValue() == -2837E10); 784 sub1 = new BigDecimal(2.349E-10); 785 result = sub1.toBigInteger(); 786 assertTrue("the bigInteger equivalent of 2.349E-10 is wrong", result 787 .equals(BigInteger.ZERO)); 788 sub1 = new BigDecimal(value2, 6); 789 result = sub1.toBigInteger(); 790 assertTrue("the bigInteger equivalent of 12334.560000 is wrong", result 791 .toString().equals("12334")); 792 } 793 794 /** 795 * @tests java.math.BigDecimal#toString() 796 */ 797 public void test_toString() { 798 BigDecimal toString1 = new BigDecimal("1234.000"); 799 assertTrue("the toString representation of 1234.000 is wrong", 800 toString1.toString().equals("1234.000")); 801 toString1 = new BigDecimal("-123.4E-5"); 802 assertTrue("the toString representation of -123.4E-5 is wrong: " 803 + toString1, toString1.toString().equals("-0.001234")); 804 toString1 = new BigDecimal("-1.455E-20"); 805 assertTrue("the toString representation of -1.455E-20 is wrong", 806 toString1.toString().equals("-1.455E-20")); 807 toString1 = new BigDecimal(value2, 4); 808 assertTrue("the toString representation of 1233456.0000 is wrong", 809 toString1.toString().equals("1233456.0000")); 810 } 811 812 /** 813 * @tests java.math.BigDecimal#unscaledValue() 814 */ 815 public void test_unscaledValue() { 816 BigDecimal unsVal = new BigDecimal("-2839485.000"); 817 assertTrue("the unscaledValue of -2839485.000 is wrong", unsVal 818 .unscaledValue().toString().equals("-2839485000")); 819 unsVal = new BigDecimal(123E10); 820 assertTrue("the unscaledValue of 123E10 is wrong", unsVal 821 .unscaledValue().toString().equals("1230000000000")); 822 unsVal = new BigDecimal("-4.56E-13"); 823 assertTrue("the unscaledValue of -4.56E-13 is wrong: " 824 + unsVal.unscaledValue(), unsVal.unscaledValue().toString() 825 .equals("-456")); 826 unsVal = new BigDecimal(value, 3); 827 assertTrue("the unscaledValue of 12345.908 is wrong", unsVal 828 .unscaledValue().toString().equals("12345908")); 829 830 } 831 832 /** 833 * @tests java.math.BigDecimal#valueOf(long) 834 */ 835 public void test_valueOfJ() { 836 BigDecimal valueOfL = BigDecimal.valueOf(9223372036854775806L); 837 assertTrue("the bigDecimal equivalent of 9223372036854775806 is wrong", 838 valueOfL.unscaledValue().toString().equals( 839 "9223372036854775806") 840 && valueOfL.scale() == 0); 841 assertTrue( 842 "the toString representation of 9223372036854775806 is wrong", 843 valueOfL.toString().equals("9223372036854775806")); 844 valueOfL = BigDecimal.valueOf(0L); 845 assertTrue("the bigDecimal equivalent of 0 is wrong", valueOfL 846 .unscaledValue().toString().equals("0") 847 && valueOfL.scale() == 0); 848 } 849 850 /** 851 * @tests java.math.BigDecimal#valueOf(long, int) 852 */ 853 public void test_valueOfJI() { 854 BigDecimal valueOfJI = BigDecimal.valueOf(9223372036854775806L, 5); 855 assertTrue( 856 "the bigDecimal equivalent of 92233720368547.75806 is wrong", 857 valueOfJI.unscaledValue().toString().equals( 858 "9223372036854775806") 859 && valueOfJI.scale() == 5); 860 assertTrue( 861 "the toString representation of 9223372036854775806 is wrong", 862 valueOfJI.toString().equals("92233720368547.75806")); 863 valueOfJI = BigDecimal.valueOf(1234L, 8); 864 assertTrue( 865 "the bigDecimal equivalent of 92233720368547.75806 is wrong", 866 valueOfJI.unscaledValue().toString().equals("1234") 867 && valueOfJI.scale() == 8); 868 assertTrue( 869 "the toString representation of 9223372036854775806 is wrong", 870 valueOfJI.toString().equals("0.00001234")); 871 valueOfJI = BigDecimal.valueOf(0, 3); 872 assertTrue( 873 "the bigDecimal equivalent of 92233720368547.75806 is wrong", 874 valueOfJI.unscaledValue().toString().equals("0") 875 && valueOfJI.scale() == 3); 876 assertTrue( 877 "the toString representation of 9223372036854775806 is wrong", 878 valueOfJI.toString().equals("0.000")); 879 880 } 881 882 public void test_BigDecimal_serialization() throws Exception { 883 // Regression for HARMONY-1896 884 char[] in = { '1', '5', '6', '7', '8', '7', '.', '0', '0' }; 885 BigDecimal bd = new BigDecimal(in, 0, 9); 886 887 ByteArrayOutputStream bos = new ByteArrayOutputStream(); 888 ObjectOutputStream oos = new ObjectOutputStream(bos); 889 oos.writeObject(bd); 890 891 ByteArrayInputStream bis = new ByteArrayInputStream(bos.toByteArray()); 892 ObjectInputStream ois = new ObjectInputStream(bis); 893 BigDecimal nbd = (BigDecimal) ois.readObject(); 894 895 assertEquals(bd.intValue(), nbd.intValue()); 896 assertEquals(bd.doubleValue(), nbd.doubleValue(), 0.0); 897 assertEquals(bd.toString(), nbd.toString()); 898 } 899 900 /** 901 * @tests java.math.BigDecimal#stripTrailingZero(long) 902 */ 903 public void test_stripTrailingZero() { 904 BigDecimal sixhundredtest = new BigDecimal("600.0"); 905 assertTrue("stripTrailingZero failed for 600.0", 906 ((sixhundredtest.stripTrailingZeros()).scale() == -2) 907 ); 908 909 /* Single digit, no trailing zero, odd number */ 910 BigDecimal notrailingzerotest = new BigDecimal("1"); 911 assertTrue("stripTrailingZero failed for 1", 912 ((notrailingzerotest.stripTrailingZeros()).scale() == 0) 913 ); 914 915 // BEGIN android-changed: preserve RI compatibility, so BigDecimal.equals (which checks 916 // value *and* scale) continues to work. https://issues.apache.org/jira/browse/HARMONY-4623 917 /* Zero */ 918 BigDecimal zerotest = new BigDecimal("0.0000"); 919 assertEquals("stripTrailingZero failed for 0.0000", 4, zerotest.stripTrailingZeros().scale()); 920 } 921 922 public void testMathContextConstruction() { 923 String a = "-12380945E+61"; 924 BigDecimal aNumber = new BigDecimal(a); 925 int precision = 6; 926 RoundingMode rm = RoundingMode.HALF_DOWN; 927 MathContext mcIntRm = new MathContext(precision, rm); 928 MathContext mcStr = new MathContext("precision=6 roundingMode=HALF_DOWN"); 929 MathContext mcInt = new MathContext(precision); 930 BigDecimal res = aNumber.abs(mcInt); 931 assertEquals("MathContext Constructer with int precision failed", 932 res, 933 new BigDecimal("1.23809E+68")); 934 935 assertEquals("Equal MathContexts are not Equal ", 936 mcIntRm, 937 mcStr); 938 939 assertEquals("Different MathContext are reported as Equal ", 940 mcInt.equals(mcStr), 941 false); 942 943 assertEquals("Equal MathContexts have different hashcodes ", 944 mcIntRm.hashCode(), 945 mcStr.hashCode()); 946 947 assertEquals("MathContext.toString() returning incorrect value", 948 mcIntRm.toString(), 949 "precision=6 roundingMode=HALF_DOWN"); 950 } 951 952 } 953
