| // 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. |
| |
| import 'package:fixnum/fixnum.dart'; |
| import 'package:test/test.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(Int32(-2).bitLength, 1); |
| expect((-Int32.ONE).bitLength, 0); |
| expect(Int32.ZERO.bitLength, 0); |
| expect(Int32.ONE.bitLength, 1); |
| expect(Int32(2).bitLength, 2); |
| expect(Int32.MAX_VALUE.bitLength, 31); |
| expect(Int32.MIN_VALUE.bitLength, 31); |
| }); |
| }); |
| |
| group('arithmetic operators', () { |
| var n1 = Int32(1234); |
| var n2 = Int32(9876); |
| var n3 = Int32(-1234); |
| var n4 = Int32(-9876); |
| |
| test('+', () { |
| expect(n1 + n2, Int32(11110)); |
| expect(n3 + n2, Int32(8642)); |
| expect(n3 + n4, Int32(-11110)); |
| expect(n3 + Int64(1), Int64(-1233)); |
| expect(Int32.MAX_VALUE + 1, Int32.MIN_VALUE); |
| }); |
| |
| test('-', () { |
| expect(n1 - n2, Int32(-8642)); |
| expect(n3 - n2, Int32(-11110)); |
| expect(n3 - n4, Int32(8642)); |
| expect(n3 - Int64(1), Int64(-1235)); |
| expect(Int32.MIN_VALUE - 1, Int32.MAX_VALUE); |
| }); |
| |
| test('unary -', () { |
| expect(-n1, Int32(-1234)); |
| expect(-Int32.ZERO, Int32.ZERO); |
| }); |
| |
| test('*', () { |
| expect(n1 * n2, Int32(12186984)); |
| expect(n2 * n3, Int32(-12186984)); |
| expect(n3 * n3, Int32(1522756)); |
| expect(n3 * n2, Int32(-12186984)); |
| expect(Int32(0x12345678) * Int32(0x22222222), Int32(-899716112)); |
| expect((Int32(123456789) * Int32(987654321)), Int32(-67153019)); |
| expect(Int32(0x12345678) * Int64(0x22222222), |
| Int64.fromInts(0x026D60DC, 0xCA5F6BF0)); |
| expect((Int32(123456789) * 987654321), Int32(-67153019)); |
| }); |
| |
| test('~/', () { |
| expect(Int32(829893893) ~/ Int32(1919), Int32(432461)); |
| expect(Int32(0x12345678) ~/ Int32(0x22), Int32(0x12345678 ~/ 0x22)); |
| expect(Int32(829893893) ~/ Int64(1919), Int32(432461)); |
| expect(Int32(0x12345678) ~/ Int64(0x22), Int32(0x12345678 ~/ 0x22)); |
| expect(Int32(829893893) ~/ 1919, Int32(432461)); |
| expect( |
| () => Int32(17) ~/ Int32.ZERO, |
| // with dart2js, `UnsupportedError` is thrown |
| // on the VM: IntegerDivisionByZeroException |
| throwsA(anyOf(const TypeMatcher<IntegerDivisionByZeroException>(), |
| isUnsupportedError))); |
| }); |
| |
| test('%', () { |
| expect(Int32(0x12345678) % Int32(0x22), Int32(0x12345678 % 0x22)); |
| expect(Int32(0x12345678) % Int64(0x22), Int32(0x12345678 % 0x22)); |
| }); |
| |
| test('remainder', () { |
| expect(Int32(0x12345678).remainder(Int32(0x22)), |
| Int32(0x12345678.remainder(0x22))); |
| expect(Int32(0x12345678).remainder(Int32(-0x22)), |
| Int32(0x12345678.remainder(-0x22))); |
| expect(Int32(-0x12345678).remainder(Int32(-0x22)), |
| Int32(-0x12345678.remainder(-0x22))); |
| expect(Int32(-0x12345678).remainder(Int32(0x22)), |
| Int32(-0x12345678.remainder(0x22))); |
| expect(Int32(0x12345678).remainder(Int64(0x22)), |
| Int32(0x12345678.remainder(0x22))); |
| }); |
| |
| test('abs', () { |
| // NOTE: Int32.MIN_VALUE.abs() is undefined |
| expect((Int32.MIN_VALUE + 1).abs(), Int32.MAX_VALUE); |
| expect(Int32(-1).abs(), Int32(1)); |
| expect(Int32(0).abs(), Int32(0)); |
| expect(Int32(1).abs(), Int32(1)); |
| expect(Int32.MAX_VALUE.abs(), Int32.MAX_VALUE); |
| }); |
| |
| test('clamp', () { |
| var val = Int32(17); |
| expect(val.clamp(20, 30), Int32(20)); |
| expect(val.clamp(10, 20), Int32(17)); |
| expect(val.clamp(10, 15), Int32(15)); |
| |
| expect(val.clamp(Int32(20), Int32(30)), Int32(20)); |
| expect(val.clamp(Int32(10), Int32(20)), Int32(17)); |
| expect(val.clamp(Int32(10), Int32(15)), Int32(15)); |
| |
| expect(val.clamp(Int64(20), Int64(30)), Int32(20)); |
| expect(val.clamp(Int64(10), Int64(20)), Int32(17)); |
| expect(val.clamp(Int64(10), Int64(15)), Int32(15)); |
| expect(val.clamp(Int64.MIN_VALUE, Int64(30)), Int32(17)); |
| expect(val.clamp(Int64(10), Int64.MAX_VALUE), 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(Int32(0).numberOfLeadingZeros(), 32); |
| expect(Int32(1).numberOfLeadingZeros(), 31); |
| expect(Int32(0xffff).numberOfLeadingZeros(), 16); |
| expect(Int32(-1).numberOfLeadingZeros(), 0); |
| }); |
| test('numberOfTrailingZeros', () { |
| expect(Int32(0).numberOfTrailingZeros(), 32); |
| expect(Int32(0x80000000).numberOfTrailingZeros(), 31); |
| expect(Int32(1).numberOfTrailingZeros(), 0); |
| expect(Int32(0x10000).numberOfTrailingZeros(), 16); |
| }); |
| }); |
| |
| group('comparison operators', () { |
| test('compareTo', () { |
| expect(Int32(0).compareTo(-1), 1); |
| expect(Int32(0).compareTo(0), 0); |
| expect(Int32(0).compareTo(1), -1); |
| expect(Int32(0).compareTo(Int32(-1)), 1); |
| expect(Int32(0).compareTo(Int32(0)), 0); |
| expect(Int32(0).compareTo(Int32(1)), -1); |
| expect(Int32(0).compareTo(Int64(-1)), 1); |
| expect(Int32(0).compareTo(Int64(0)), 0); |
| expect(Int32(0).compareTo(Int64(1)), -1); |
| }); |
| |
| test('<', () { |
| expect(Int32(17) < Int32(18), true); |
| expect(Int32(17) < Int32(17), false); |
| expect(Int32(17) < Int32(16), false); |
| expect(Int32(17) < Int64(18), true); |
| expect(Int32(17) < Int64(17), false); |
| expect(Int32(17) < Int64(16), false); |
| expect(Int32.MIN_VALUE < Int32.MAX_VALUE, true); |
| expect(Int32.MAX_VALUE < Int32.MIN_VALUE, false); |
| }); |
| |
| test('<=', () { |
| expect(Int32(17) <= Int32(18), true); |
| expect(Int32(17) <= Int32(17), true); |
| expect(Int32(17) <= Int32(16), false); |
| expect(Int32(17) <= Int64(18), true); |
| expect(Int32(17) <= Int64(17), true); |
| expect(Int32(17) <= Int64(16), false); |
| expect(Int32.MIN_VALUE <= Int32.MAX_VALUE, true); |
| expect(Int32.MAX_VALUE <= Int32.MIN_VALUE, false); |
| }); |
| |
| test('==', () { |
| expect(Int32(17), isNot(equals(Int32(18)))); |
| expect(Int32(17), equals(Int32(17))); |
| expect(Int32(17), isNot(equals(Int32(16)))); |
| expect(Int32(17), isNot(equals(Int64(18)))); |
| expect(Int32(17), equals(Int64(17))); |
| expect(Int32(17), isNot(equals(Int64(16)))); |
| expect(Int32.MIN_VALUE, isNot(equals(Int32.MAX_VALUE))); |
| expect(Int32(17), isNot(equals(18))); |
| expect(Int32(17) == 17, isTrue); |
| expect(Int32(17), isNot(equals(16))); |
| expect(Int32(17), isNot(equals(Object()))); |
| expect(Int32(17), isNot(equals(null))); |
| }); |
| |
| test('>=', () { |
| expect(Int32(17) >= Int32(18), false); |
| expect(Int32(17) >= Int32(17), true); |
| expect(Int32(17) >= Int32(16), true); |
| expect(Int32(17) >= Int64(18), false); |
| expect(Int32(17) >= Int64(17), true); |
| expect(Int32(17) >= Int64(16), true); |
| expect(Int32.MIN_VALUE >= Int32.MAX_VALUE, false); |
| expect(Int32.MAX_VALUE >= Int32.MIN_VALUE, true); |
| }); |
| |
| test('>', () { |
| expect(Int32(17) > Int32(18), false); |
| expect(Int32(17) > Int32(17), false); |
| expect(Int32(17) > Int32(16), true); |
| expect(Int32(17) > Int64(18), false); |
| expect(Int32(17) > Int64(17), false); |
| expect(Int32(17) > Int64(16), true); |
| expect(Int32.MIN_VALUE > Int32.MAX_VALUE, false); |
| expect(Int32.MAX_VALUE > Int32.MIN_VALUE, true); |
| }); |
| }); |
| |
| group('bitwise operators', () { |
| test('&', () { |
| expect(Int32(0x12345678) & Int32(0x22222222), |
| Int32(0x12345678 & 0x22222222)); |
| expect(Int32(0x12345678) & Int64(0x22222222), |
| Int64(0x12345678 & 0x22222222)); |
| }); |
| |
| test('|', () { |
| expect(Int32(0x12345678) | Int32(0x22222222), |
| Int32(0x12345678 | 0x22222222)); |
| expect(Int32(0x12345678) | Int64(0x22222222), |
| Int64(0x12345678 | 0x22222222)); |
| }); |
| |
| test('^', () { |
| expect(Int32(0x12345678) ^ Int32(0x22222222), |
| Int32(0x12345678 ^ 0x22222222)); |
| expect(Int32(0x12345678) ^ Int64(0x22222222), |
| Int64(0x12345678 ^ 0x22222222)); |
| }); |
| |
| test('~', () { |
| expect(~(Int32(0x12345678)), Int32(~0x12345678)); |
| expect(-(Int32(0x12345678)), Int64(-0x12345678)); |
| }); |
| }); |
| |
| group('bitshift operators', () { |
| test('<<', () { |
| expect(Int32(0x12345678) << 7, Int32(0x12345678 << 7)); |
| expect(Int32(0x12345678) << 32, Int32.ZERO); |
| expect(Int32(0x12345678) << 33, Int32.ZERO); |
| expect(() => Int32(17) << -1, throwsArgumentError); |
| }); |
| |
| test('>>', () { |
| expect(Int32(0x12345678) >> 7, Int32(0x12345678 >> 7)); |
| expect(Int32(0x12345678) >> 32, Int32.ZERO); |
| expect(Int32(0x12345678) >> 33, Int32.ZERO); |
| expect(Int32(-42) >> 32, Int32(-1)); |
| expect(Int32(-42) >> 33, Int32(-1)); |
| expect(() => Int32(17) >> -1, throwsArgumentError); |
| }); |
| |
| test('shiftRightUnsigned', () { |
| expect(Int32(0x12345678).shiftRightUnsigned(7), Int32(0x12345678 >> 7)); |
| expect(Int32(0x12345678).shiftRightUnsigned(32), Int32.ZERO); |
| expect(Int32(0x12345678).shiftRightUnsigned(33), Int32.ZERO); |
| expect(Int32(-42).shiftRightUnsigned(32), Int32.ZERO); |
| expect(Int32(-42).shiftRightUnsigned(33), Int32.ZERO); |
| expect(() => (Int32(17).shiftRightUnsigned(-1)), throwsArgumentError); |
| }); |
| }); |
| |
| 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(Int32(17).toDouble(), same(17.0)); |
| expect(Int32(-17).toDouble(), same(-17.0)); |
| }); |
| test('toInt', () { |
| expect(Int32(17).toInt(), 17); |
| expect(Int32(-17).toInt(), -17); |
| }); |
| test('toInt32', () { |
| expect(Int32(17).toInt32(), Int32(17)); |
| expect(Int32(-17).toInt32(), Int32(-17)); |
| }); |
| test('toInt64', () { |
| expect(Int32(17).toInt64(), Int64(17)); |
| expect(Int32(-17).toInt64(), Int64(-17)); |
| }); |
| test('toBytes', () { |
| expect(Int32(0).toBytes(), [0, 0, 0, 0]); |
| expect(Int32(0x01020304).toBytes(), [4, 3, 2, 1]); |
| expect(Int32(0x04030201).toBytes(), [1, 2, 3, 4]); |
| expect(Int32(-1).toBytes(), [0xff, 0xff, 0xff, 0xff]); |
| }); |
| }); |
| |
| group('parse', () { |
| test('base 10', () { |
| void checkInt(int x) { |
| expect(Int32.parseRadix('$x', 10), 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), throwsFormatException); |
| }); |
| |
| test('parseRadix', () { |
| void 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'), Int32(0)); |
| expect(Int32.parseInt('1000'), Int32(1000)); |
| expect(Int32.parseInt('4294967296'), Int32(4294967296)); |
| }); |
| |
| test('parseHex', () { |
| expect(Int32.parseHex('deadbeef'), Int32(0xdeadbeef)); |
| expect(Int32.parseHex('cafebabe'), Int32(0xcafebabe)); |
| expect(Int32.parseHex('8badf00d'), Int32(0x8badf00d)); |
| }); |
| }); |
| |
| group('string representation', () { |
| test('toString', () { |
| expect(Int32(0).toString(), '0'); |
| expect(Int32(1).toString(), '1'); |
| expect(Int32(-1).toString(), '-1'); |
| expect(Int32(1000).toString(), '1000'); |
| expect(Int32(-1000).toString(), '-1000'); |
| expect(Int32(123456789).toString(), '123456789'); |
| expect(Int32(2147483647).toString(), '2147483647'); |
| expect(Int32(2147483648).toString(), '-2147483648'); |
| expect(Int32(2147483649).toString(), '-2147483647'); |
| expect(Int32(2147483650).toString(), '-2147483646'); |
| expect(Int32(-2147483648).toString(), '-2147483648'); |
| expect(Int32(-2147483649).toString(), '2147483647'); |
| expect(Int32(-2147483650).toString(), '2147483646'); |
| }); |
| }); |
| |
| group('toHexString', () { |
| test('returns hexadecimal string representation', () { |
| expect(Int32(-1).toHexString(), '-1'); |
| expect((Int32(-1) >> 8).toHexString(), '-1'); |
| expect((Int32(-1) << 8).toHexString(), '-100'); |
| expect(Int32(123456789).toHexString(), '75bcd15'); |
| expect(Int32(-1).shiftRightUnsigned(8).toHexString(), 'ffffff'); |
| }); |
| }); |
| |
| group('toRadixString', () { |
| test('returns base n string representation', () { |
| expect(Int32(123456789).toRadixString(5), '223101104124'); |
| }); |
| }); |
| } |
