| // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| library Int32test; |
| |
| import 'package:fixnum/fixnum.dart'; |
| import 'package:unittest/unittest.dart'; |
| |
| void main() { |
| group("isX tests", () { |
| test("isEven", () { |
| expect((-Int32.ONE).isEven, false); |
| expect(Int32.ZERO.isEven, true); |
| expect(Int32.ONE.isEven, false); |
| expect(Int32.TWO.isEven, true); |
| }); |
| test("isMaxValue", () { |
| expect(Int32.MIN_VALUE.isMaxValue, false); |
| expect(Int32.ZERO.isMaxValue, false); |
| expect(Int32.MAX_VALUE.isMaxValue, true); |
| }); |
| test("isMinValue", () { |
| expect(Int32.MIN_VALUE.isMinValue, true); |
| expect(Int32.ZERO.isMinValue, false); |
| expect(Int32.MAX_VALUE.isMinValue, false); |
| }); |
| test("isNegative", () { |
| expect(Int32.MIN_VALUE.isNegative, true); |
| expect(Int32.ZERO.isNegative, false); |
| expect(Int32.ONE.isNegative, false); |
| }); |
| test("isOdd", () { |
| expect((-Int32.ONE).isOdd, true); |
| expect(Int32.ZERO.isOdd, false); |
| expect(Int32.ONE.isOdd, true); |
| expect(Int32.TWO.isOdd, false); |
| }); |
| test("isZero", () { |
| expect(Int32.MIN_VALUE.isZero, false); |
| expect(Int32.ZERO.isZero, true); |
| expect(Int32.MAX_VALUE.isZero, false); |
| }); |
| test("bitLength", () { |
| expect(new Int32(-2).bitLength, 1); |
| expect((-Int32.ONE).bitLength, 0); |
| expect(Int32.ZERO.bitLength, 0); |
| expect(Int32.ONE.bitLength, 1); |
| expect(new Int32(2).bitLength, 2); |
| expect(Int32.MAX_VALUE.bitLength, 31); |
| expect(Int32.MIN_VALUE.bitLength, 31); |
| }); |
| }); |
| |
| group("arithmetic operators", () { |
| Int32 n1 = new Int32(1234); |
| Int32 n2 = new Int32(9876); |
| Int32 n3 = new Int32(-1234); |
| Int32 n4 = new Int32(-9876); |
| |
| test("+", () { |
| expect(n1 + n2, new Int32(11110)); |
| expect(n3 + n2, new Int32(8642)); |
| expect(n3 + n4, new Int32(-11110)); |
| expect(n3 + new Int64(1), new Int64(-1233)); |
| expect(Int32.MAX_VALUE + 1, Int32.MIN_VALUE); |
| expect(() => new Int32(17) + null, throws); |
| }); |
| |
| test("-", () { |
| expect(n1 - n2, new Int32(-8642)); |
| expect(n3 - n2, new Int32(-11110)); |
| expect(n3 - n4, new Int32(8642)); |
| expect(n3 - new Int64(1), new Int64(-1235)); |
| expect(Int32.MIN_VALUE - 1, Int32.MAX_VALUE); |
| expect(() => new Int32(17) - null, throws); |
| }); |
| |
| test("unary -", () { |
| expect(-n1, new Int32(-1234)); |
| expect(-Int32.ZERO, Int32.ZERO); |
| }); |
| |
| test("*", () { |
| expect(n1 * n2, new Int32(12186984)); |
| expect(n2 * n3, new Int32(-12186984)); |
| expect(n3 * n3, new Int32(1522756)); |
| expect(n3 * n2, new Int32(-12186984)); |
| expect( |
| new Int32(0x12345678) * new Int32(0x22222222), new Int32(-899716112)); |
| expect( |
| (new Int32(123456789) * new Int32(987654321)), new Int32(-67153019)); |
| expect(new Int32(0x12345678) * new Int64(0x22222222), |
| new Int64.fromInts(0x026D60DC, 0xCA5F6BF0)); |
| expect((new Int32(123456789) * 987654321), new Int32(-67153019)); |
| expect(() => new Int32(17) * null, throws); |
| }); |
| |
| test("~/", () { |
| expect(new Int32(829893893) ~/ new Int32(1919), new Int32(432461)); |
| expect(new Int32(0x12345678) ~/ new Int32(0x22), |
| new Int32(0x12345678 ~/ 0x22)); |
| expect(new Int32(829893893) ~/ new Int64(1919), new Int32(432461)); |
| expect(new Int32(0x12345678) ~/ new Int64(0x22), |
| new Int32(0x12345678 ~/ 0x22)); |
| expect(new Int32(829893893) ~/ 1919, new Int32(432461)); |
| expect(() => new Int32(17) ~/ Int32.ZERO, throws); |
| expect(() => new Int32(17) ~/ null, throws); |
| }); |
| |
| test("%", () { |
| expect(new Int32(0x12345678) % new Int32(0x22), |
| new Int32(0x12345678 % 0x22)); |
| expect(new Int32(0x12345678) % new Int64(0x22), |
| new Int32(0x12345678 % 0x22)); |
| expect(() => new Int32(17) % null, throws); |
| }); |
| |
| test("remainder", () { |
| expect(new Int32(0x12345678).remainder(new Int32(0x22)), |
| new Int32(0x12345678.remainder(0x22))); |
| expect(new Int32(0x12345678).remainder(new Int32(-0x22)), |
| new Int32(0x12345678.remainder(-0x22))); |
| expect(new Int32(-0x12345678).remainder(new Int32(-0x22)), |
| new Int32(-0x12345678.remainder(-0x22))); |
| expect(new Int32(-0x12345678).remainder(new Int32(0x22)), |
| new Int32(-0x12345678.remainder(0x22))); |
| expect(new Int32(0x12345678).remainder(new Int64(0x22)), |
| new Int32(0x12345678.remainder(0x22))); |
| expect(() => new Int32(17).remainder(null), throws); |
| }); |
| |
| test("abs", () { |
| // NOTE: Int32.MIN_VALUE.abs() is undefined |
| expect((Int32.MIN_VALUE + 1).abs(), Int32.MAX_VALUE); |
| expect(new Int32(-1).abs(), new Int32(1)); |
| expect(new Int32(0).abs(), new Int32(0)); |
| expect(new Int32(1).abs(), new Int32(1)); |
| expect(Int32.MAX_VALUE.abs(), Int32.MAX_VALUE); |
| }); |
| |
| test("clamp", () { |
| Int32 val = new Int32(17); |
| expect(val.clamp(20, 30), new Int32(20)); |
| expect(val.clamp(10, 20), new Int32(17)); |
| expect(val.clamp(10, 15), new Int32(15)); |
| |
| expect(val.clamp(new Int32(20), new Int32(30)), new Int32(20)); |
| expect(val.clamp(new Int32(10), new Int32(20)), new Int32(17)); |
| expect(val.clamp(new Int32(10), new Int32(15)), new Int32(15)); |
| |
| expect(val.clamp(new Int64(20), new Int64(30)), new Int32(20)); |
| expect(val.clamp(new Int64(10), new Int64(20)), new Int32(17)); |
| expect(val.clamp(new Int64(10), new Int64(15)), new Int32(15)); |
| expect(val.clamp(Int64.MIN_VALUE, new Int64(30)), new Int32(17)); |
| expect(val.clamp(new Int64(10), Int64.MAX_VALUE), new Int32(17)); |
| |
| expect(() => val.clamp(30.5, 40.5), throwsArgumentError); |
| expect(() => val.clamp(5.5, 10.5), throwsArgumentError); |
| expect(() => val.clamp('a', 1), throwsArgumentError); |
| expect(() => val.clamp(1, 'b'), throwsArgumentError); |
| expect(() => val.clamp('a', 1), throwsArgumentError); |
| }); |
| }); |
| |
| group("leading/trailing zeros", () { |
| test("numberOfLeadingZeros", () { |
| expect(new Int32(0).numberOfLeadingZeros(), 32); |
| expect(new Int32(1).numberOfLeadingZeros(), 31); |
| expect(new Int32(0xffff).numberOfLeadingZeros(), 16); |
| expect(new Int32(-1).numberOfLeadingZeros(), 0); |
| }); |
| test("numberOfTrailingZeros", () { |
| expect(new Int32(0).numberOfTrailingZeros(), 32); |
| expect(new Int32(0x80000000).numberOfTrailingZeros(), 31); |
| expect(new Int32(1).numberOfTrailingZeros(), 0); |
| expect(new Int32(0x10000).numberOfTrailingZeros(), 16); |
| }); |
| }); |
| |
| group("comparison operators", () { |
| test("compareTo", () { |
| expect(new Int32(0).compareTo(-1), 1); |
| expect(new Int32(0).compareTo(0), 0); |
| expect(new Int32(0).compareTo(1), -1); |
| expect(new Int32(0).compareTo(new Int32(-1)), 1); |
| expect(new Int32(0).compareTo(new Int32(0)), 0); |
| expect(new Int32(0).compareTo(new Int32(1)), -1); |
| expect(new Int32(0).compareTo(new Int64(-1)), 1); |
| expect(new Int32(0).compareTo(new Int64(0)), 0); |
| expect(new Int32(0).compareTo(new Int64(1)), -1); |
| }); |
| |
| test("<", () { |
| expect(new Int32(17) < new Int32(18), true); |
| expect(new Int32(17) < new Int32(17), false); |
| expect(new Int32(17) < new Int32(16), false); |
| expect(new Int32(17) < new Int64(18), true); |
| expect(new Int32(17) < new Int64(17), false); |
| expect(new Int32(17) < new Int64(16), false); |
| expect(Int32.MIN_VALUE < Int32.MAX_VALUE, true); |
| expect(Int32.MAX_VALUE < Int32.MIN_VALUE, false); |
| expect(() => new Int32(17) < null, throws); |
| }); |
| |
| test("<=", () { |
| expect(new Int32(17) <= new Int32(18), true); |
| expect(new Int32(17) <= new Int32(17), true); |
| expect(new Int32(17) <= new Int32(16), false); |
| expect(new Int32(17) <= new Int64(18), true); |
| expect(new Int32(17) <= new Int64(17), true); |
| expect(new Int32(17) <= new Int64(16), false); |
| expect(Int32.MIN_VALUE <= Int32.MAX_VALUE, true); |
| expect(Int32.MAX_VALUE <= Int32.MIN_VALUE, false); |
| expect(() => new Int32(17) <= null, throws); |
| }); |
| |
| test("==", () { |
| expect(new Int32(17) == new Int32(18), false); |
| expect(new Int32(17) == new Int32(17), true); |
| expect(new Int32(17) == new Int32(16), false); |
| expect(new Int32(17) == new Int64(18), false); |
| expect(new Int32(17) == new Int64(17), true); |
| expect(new Int32(17) == new Int64(16), false); |
| expect(Int32.MIN_VALUE == Int32.MAX_VALUE, false); |
| expect(new Int32(17) == 18, false); |
| expect(new Int32(17) == 17, true); |
| expect(new Int32(17) == 16, false); |
| expect(new Int32(17) == new Object(), false); |
| expect(new Int32(17) == null, false); |
| }); |
| |
| test(">=", () { |
| expect(new Int32(17) >= new Int32(18), false); |
| expect(new Int32(17) >= new Int32(17), true); |
| expect(new Int32(17) >= new Int32(16), true); |
| expect(new Int32(17) >= new Int64(18), false); |
| expect(new Int32(17) >= new Int64(17), true); |
| expect(new Int32(17) >= new Int64(16), true); |
| expect(Int32.MIN_VALUE >= Int32.MAX_VALUE, false); |
| expect(Int32.MAX_VALUE >= Int32.MIN_VALUE, true); |
| expect(() => new Int32(17) >= null, throws); |
| }); |
| |
| test(">", () { |
| expect(new Int32(17) > new Int32(18), false); |
| expect(new Int32(17) > new Int32(17), false); |
| expect(new Int32(17) > new Int32(16), true); |
| expect(new Int32(17) > new Int64(18), false); |
| expect(new Int32(17) > new Int64(17), false); |
| expect(new Int32(17) > new Int64(16), true); |
| expect(Int32.MIN_VALUE > Int32.MAX_VALUE, false); |
| expect(Int32.MAX_VALUE > Int32.MIN_VALUE, true); |
| expect(() => new Int32(17) > null, throws); |
| }); |
| }); |
| |
| group("bitwise operators", () { |
| test("&", () { |
| expect(new Int32(0x12345678) & new Int32(0x22222222), |
| new Int32(0x12345678 & 0x22222222)); |
| expect(new Int32(0x12345678) & new Int64(0x22222222), |
| new Int64(0x12345678 & 0x22222222)); |
| expect(() => new Int32(17) & null, throwsArgumentError); |
| }); |
| |
| test("|", () { |
| expect(new Int32(0x12345678) | new Int32(0x22222222), |
| new Int32(0x12345678 | 0x22222222)); |
| expect(new Int32(0x12345678) | new Int64(0x22222222), |
| new Int64(0x12345678 | 0x22222222)); |
| expect(() => new Int32(17) | null, throws); |
| }); |
| |
| test("^", () { |
| expect(new Int32(0x12345678) ^ new Int32(0x22222222), |
| new Int32(0x12345678 ^ 0x22222222)); |
| expect(new Int32(0x12345678) ^ new Int64(0x22222222), |
| new Int64(0x12345678 ^ 0x22222222)); |
| expect(() => new Int32(17) ^ null, throws); |
| }); |
| |
| test("~", () { |
| expect(~(new Int32(0x12345678)), new Int32(~0x12345678)); |
| expect(-(new Int32(0x12345678)), new Int64(-0x12345678)); |
| }); |
| }); |
| |
| group("bitshift operators", () { |
| test("<<", () { |
| expect(new Int32(0x12345678) << 7, new Int32(0x12345678 << 7)); |
| expect(() => new Int32(17) << -1, throwsArgumentError); |
| expect(() => new Int32(17) << null, throws); |
| }); |
| |
| test(">>", () { |
| expect(new Int32(0x12345678) >> 7, new Int32(0x12345678 >> 7)); |
| expect(() => new Int32(17) >> -1, throwsArgumentError); |
| expect(() => new Int32(17) >> null, throws); |
| }); |
| |
| test("shiftRightUnsigned", () { |
| expect(new Int32(0x12345678).shiftRightUnsigned(7), |
| new Int32(0x12345678 >> 7)); |
| expect(() => (new Int32(17).shiftRightUnsigned(-1)), throwsArgumentError); |
| expect(() => (new Int32(17).shiftRightUnsigned(null)), throws); |
| }); |
| }); |
| |
| group("conversions", () { |
| test("toSigned", () { |
| expect(Int32.ONE.toSigned(2), Int32.ONE); |
| expect(Int32.ONE.toSigned(1), -Int32.ONE); |
| expect(Int32.MAX_VALUE.toSigned(32), Int32.MAX_VALUE); |
| expect(Int32.MIN_VALUE.toSigned(32), Int32.MIN_VALUE); |
| expect(Int32.MAX_VALUE.toSigned(31), -Int32.ONE); |
| expect(Int32.MIN_VALUE.toSigned(31), Int32.ZERO); |
| expect(() => Int32.ONE.toSigned(0), throwsRangeError); |
| expect(() => Int32.ONE.toSigned(33), throwsRangeError); |
| }); |
| test("toUnsigned", () { |
| expect(Int32.ONE.toUnsigned(1), Int32.ONE); |
| expect(Int32.ONE.toUnsigned(0), Int32.ZERO); |
| expect(Int32.MAX_VALUE.toUnsigned(32), Int32.MAX_VALUE); |
| expect(Int32.MIN_VALUE.toUnsigned(32), Int32.MIN_VALUE); |
| expect(Int32.MAX_VALUE.toUnsigned(31), Int32.MAX_VALUE); |
| expect(Int32.MIN_VALUE.toUnsigned(31), Int32.ZERO); |
| expect(() => Int32.ONE.toUnsigned(-1), throwsRangeError); |
| expect(() => Int32.ONE.toUnsigned(33), throwsRangeError); |
| }); |
| test("toDouble", () { |
| expect(new Int32(17).toDouble(), same(17.0)); |
| expect(new Int32(-17).toDouble(), same(-17.0)); |
| }); |
| test("toInt", () { |
| expect(new Int32(17).toInt(), 17); |
| expect(new Int32(-17).toInt(), -17); |
| }); |
| test("toInt32", () { |
| expect(new Int32(17).toInt32(), new Int32(17)); |
| expect(new Int32(-17).toInt32(), new Int32(-17)); |
| }); |
| test("toInt64", () { |
| expect(new Int32(17).toInt64(), new Int64(17)); |
| expect(new Int32(-17).toInt64(), new Int64(-17)); |
| }); |
| test("toBytes", () { |
| expect(new Int32(0).toBytes(), [ 0, 0, 0, 0 ]); |
| expect(new Int32(0x01020304).toBytes(), [ 4, 3, 2, 1 ]); |
| expect(new Int32(0x04030201).toBytes(), [ 1, 2, 3, 4 ]); |
| expect(new Int32(-1).toBytes(), [ 0xff, 0xff, 0xff, 0xff ]); |
| }); |
| }); |
| |
| group("parse", () { |
| test("base 10", () { |
| checkInt(int x) { |
| expect(Int32.parseRadix('$x', 10), new Int32(x)); |
| } |
| checkInt(0); |
| checkInt(1); |
| checkInt(1000); |
| checkInt(12345678); |
| checkInt(2147483647); |
| checkInt(2147483648); |
| checkInt(4294967295); |
| checkInt(4294967296); |
| expect(() => Int32.parseRadix('xyzzy', -1), throwsArgumentError); |
| expect(() => Int32.parseRadix('plugh', 10), |
| throwsA(new isInstanceOf<FormatException>())); |
| }); |
| |
| test("parseRadix", () { |
| check(String s, int r, String x) { |
| expect(Int32.parseRadix(s, r).toString(), x); |
| } |
| check('deadbeef', 16, '-559038737'); |
| check('95', 12, '113'); |
| }); |
| |
| test("parseInt", () { |
| expect(Int32.parseInt('0'), new Int32(0)); |
| expect(Int32.parseInt('1000'), new Int32(1000)); |
| expect(Int32.parseInt('4294967296'), new Int32(4294967296)); |
| }); |
| |
| test("parseHex", () { |
| expect(Int32.parseHex('deadbeef'), new Int32(0xdeadbeef)); |
| expect(Int32.parseHex('cafebabe'), new Int32(0xcafebabe)); |
| expect(Int32.parseHex('8badf00d'), new Int32(0x8badf00d)); |
| }); |
| }); |
| |
| group("string representation", () { |
| test("toString", () { |
| expect(new Int32(0).toString(), "0"); |
| expect(new Int32(1).toString(), "1"); |
| expect(new Int32(-1).toString(), "-1"); |
| expect(new Int32(1000).toString(), "1000"); |
| expect(new Int32(-1000).toString(), "-1000"); |
| expect(new Int32(123456789).toString(), "123456789"); |
| expect(new Int32(2147483647).toString(), "2147483647"); |
| expect(new Int32(2147483648).toString(), "-2147483648"); |
| expect(new Int32(2147483649).toString(), "-2147483647"); |
| expect(new Int32(2147483650).toString(), "-2147483646"); |
| expect(new Int32(-2147483648).toString(), "-2147483648"); |
| expect(new Int32(-2147483649).toString(), "2147483647"); |
| expect(new Int32(-2147483650).toString(), "2147483646"); |
| }); |
| }); |
| |
| group("toHexString", () { |
| test("returns hexadecimal string representation", () { |
| expect(new Int32(-1).toHexString(), "-1"); |
| expect((new Int32(-1) >> 8).toHexString(), "-1"); |
| expect((new Int32(-1) << 8).toHexString(), "-100"); |
| expect(new Int32(123456789).toHexString(), "75bcd15"); |
| expect(new Int32(-1).shiftRightUnsigned(8).toHexString(), "ffffff"); |
| }); |
| }); |
| |
| group("toRadixString", () { |
| test("returns base n string representation", () { |
| expect(new Int32(123456789).toRadixString(5), "223101104124"); |
| }); |
| }); |
| } |
