Migrate fixnum tests to unittest. Fix int32 rollover bug.

pkg/fixnum/test/int_64_test.dart

 // 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 int64test;
-import "package:expect/expect.dart";
 import 'package:fixnum/fixnum.dart';
+import 'package:unittest/unittest.dart';
 
 void main() {
-  testAdditive();
-  testBitOps();
-  testComparisons();
-  testConversions();
-  testDiv();
-  testFactorial();
-  testMinMax();
-  testMod();
-  testMultiplicative();
-  testNegate();
-  testShift();
-  testToHexString();
-  testToString();
-}
-
-void testAdditive() {
-  {
+  group("arithmetic operators", () {
     int64 n1 = new int64.fromInt(1234);
     int64 n2 = new int64.fromInt(9876);
-    Expect.equals(new int64.fromInt(11110), n1 + n2);
-    Expect.equals(new int64.fromInt(-8642), n1 - n2);
-  }
-
-  {
-    int64 n1 = new int64.fromInt(-1234);
-    int64 n2 = new int64.fromInt(9876);
-    Expect.equals(new int64.fromInt(8642), n1 + n2);
-    Expect.equals(new int64.fromInt(-11110), n1 - n2);
-  }
-
-  {
-    int64 n1 = new int64.fromInt(-1234);
-    int64 n2 = new int64.fromInt(-9876);
-    Expect.equals(new int64.fromInt(-11110), n1 + n2);
-    Expect.equals(new int64.fromInt(8642), n1 - n2);
-  }
-
-  {
-    int64 n1 = new int64.fromInts(0x12345678, 0xabcdabcd);
-    int64 n2 = new int64.fromInts(0x77773333, 0x22224444);
-    Expect.equals(new int64.fromInts(0x89ab89ab, 0xcdeff011), n1 + n2);
-    Expect.equals(new int64.fromInts(0x9abd2345, 0x89ab6789), n1 - n2);
-  }
-}
-
-void testBitOps() {
-  {
+    int64 n3 = new int64.fromInt(-1234);
+    int64 n4 = new int64.fromInt(-9876);
+    int64 n5 = new int64.fromInts(0x12345678, 0xabcdabcd);
+    int64 n6 = new int64.fromInts(0x77773333, 0x22224444);
+
+    test("+", () {
+      expect(n1 + n2, new int64.fromInt(11110));
+      expect(n3 + n2, new int64.fromInt(8642));
+      expect(n3 + n4, new int64.fromInt(-11110));
+      expect(n5 + n6, new int64.fromInts(0x89ab89ab, 0xcdeff011));
+      expect(int64.MAX_VALUE + 1, int64.MIN_VALUE);
+    });
+
+    test("-", () {
+      expect(n1 - n2, new int64.fromInt(-8642));
+      expect(n3 - n2, new int64.fromInt(-11110));
+      expect(n3 - n4, new int64.fromInt(8642));
+      expect(n5 - n6, new int64.fromInts(0x9abd2345, 0x89ab6789));
+      expect(int64.MIN_VALUE - 1, int64.MAX_VALUE);
+    });
+
+    test("unary -", () {
+      expect(-n1, new int64.fromInt(-1234));
+      expect(-int64.ZERO, int64.ZERO);
+    });
+
+    test("*", () {
+      expect(new int64.fromInt(1111) * new int64.fromInt(3),
+          new int64.fromInt(3333));
+      expect(new int64.fromInt(1111) * new int64.fromInt(-3),
+          new int64.fromInt(-3333));
+      expect(new int64.fromInt(-1111) * new int64.fromInt(3),
+          new int64.fromInt(-3333));
+      expect(new int64.fromInt(-1111) * new int64.fromInt(-3),
+          new int64.fromInt(3333));
+      expect(new int64.fromInt(100) * new int64.fromInt(0),
+          new int64.fromInt(0));
+
+      expect(new int64.fromInts(0x12345678, 0x12345678) *
+          new int64.fromInts(0x1234, 0x12345678),
+          new int64.fromInts(0x7ff63f7c, 0x1df4d840));
+      expect(new int64.fromInts(0xf2345678, 0x12345678) *
+          new int64.fromInts(0x1234, 0x12345678),
+          new int64.fromInts(0x7ff63f7c, 0x1df4d840));
+      expect(new int64.fromInts(0xf2345678, 0x12345678) *
+          new int64.fromInts(0xffff1234, 0x12345678),
+          new int64.fromInts(0x297e3f7c, 0x1df4d840));
+
+      // RHS int32
+      expect((new int64.fromInt(123456789) * new int32.fromInt(987654321)),
+          new int64.fromInts(0x1b13114, 0xfbff5385));
+      expect((new int64.fromInt(123456789) * new int32.fromInt(987654321)),
+          new int64.fromInts(0x1b13114, 0xfbff5385));
+
+      // Wraparound
+      expect((new int64.fromInt(123456789) * new int64.fromInt(987654321)),
+          new int64.fromInts(0x1b13114, 0xfbff5385));
+
+      expect(int64.MIN_VALUE * new int64.fromInt(2), new int64.fromInt(0));
+      expect(int64.MIN_VALUE * new int64.fromInt(1), int64.MIN_VALUE);
+      expect(int64.MIN_VALUE * new int64.fromInt(-1), int64.MIN_VALUE);
+    });
+
+    test("~/", () {
+      int64 deadBeef = new int64.fromInts(0xDEADBEEF, 0xDEADBEEF);
+      int64 ten = new int64.fromInt(10);
+
+      expect(deadBeef ~/ ten, new int64.fromInts(0xfcaaf97e, 0x63115fe5));
+      expect(int64.ONE ~/ int64.TWO, int64.ZERO);
+      expect(int64.MAX_VALUE ~/ int64.TWO,
+          new int64.fromInts(0x3fffffff, 0xffffffff));
+      expect(int64.ZERO ~/ new int64.fromInt(1000), int64.ZERO);
+      expect(int64.MIN_VALUE ~/ int64.MIN_VALUE, int64.ONE);
+      expect(new int64.fromInt(1000) ~/ int64.MIN_VALUE, int64.ZERO);
+      expect(int64.MIN_VALUE ~/ new int64.fromInt(8192),
+          new int64.fromInt(-1125899906842624));
+      expect(int64.MIN_VALUE ~/ new int64.fromInt(8193),
+          new int64.fromInt(-1125762484664320));
+      expect(new int64.fromInt(-1000) ~/ new int64.fromInt(8192), int64.ZERO);
+      expect(new int64.fromInt(-1000) ~/ new int64.fromInt(8193), int64.ZERO);
+      expect(new int64.fromInt(-1000000000) ~/ new int64.fromInt(8192),
+          new int64.fromInt(-122070));
+      expect(new int64.fromInt(-1000000000) ~/ new int64.fromInt(8193),
+          new int64.fromInt(-122055));
+      expect(new int64.fromInt(1000000000) ~/ new int64.fromInt(8192),
+          new int64.fromInt(122070));
+      expect(new int64.fromInt(1000000000) ~/ new int64.fromInt(8193),
+          new int64.fromInt(122055));
+      expect(int64.MAX_VALUE ~/ new int64.fromInts(0x00000000, 0x00000400),
+          new int64.fromInts(0x1fffff, 0xffffffff));
+      expect(int64.MAX_VALUE ~/ new int64.fromInts(0x00000000, 0x00040000),
+          new int64.fromInts(0x1fff, 0xffffffff));
+      expect(int64.MAX_VALUE ~/ new int64.fromInts(0x00000000, 0x04000000),
+          new int64.fromInts(0x1f, 0xffffffff));
+      expect(int64.MAX_VALUE ~/ new int64.fromInts(0x00000004, 0x00000000),
+          new int64.fromInt(536870911));
+      expect(int64.MAX_VALUE ~/ new int64.fromInts(0x00000400, 0x00000000),
+          new int64.fromInt(2097151));
+      expect(int64.MAX_VALUE ~/ new int64.fromInts(0x00040000, 0x00000000),
+          new int64.fromInt(8191));
+      expect(int64.MAX_VALUE ~/ new int64.fromInts(0x04000000, 0x00000000),
+          new int64.fromInt(31));
+      expect(int64.MAX_VALUE ~/ new int64.fromInts(0x00000000, 0x00000300),
+          new int64.fromInts(0x2AAAAA, 0xAAAAAAAA));
+      expect(int64.MAX_VALUE ~/ new int64.fromInts(0x00000000, 0x30000000),
+          new int64.fromInts(0x2, 0xAAAAAAAA));
+      expect(int64.MAX_VALUE ~/ new int64.fromInts(0x00300000, 0x00000000),
+          new int64.fromInt(0x2AA));
+      expect(int64.MAX_VALUE ~/ new int64.fromInt(0x123456),
+          new int64.fromInts(0x708, 0x002E9501));
+      expect(int64.MAX_VALUE % new int64.fromInt(0x123456),
+          new int64.fromInt(0x3BDA9));
+      expect(new int64.fromInt(5) ~/ new int64.fromInt(5),
+          new int64.fromInt(1));
+      expect(new int64.fromInt(1000) ~/ new int64.fromInt(3),
+          new int64.fromInt(333));
+      expect(new int64.fromInt(1000) ~/ new int64.fromInt(-3),
+          new int64.fromInt(-333));
+      expect(new int64.fromInt(-1000) ~/ new int64.fromInt(3),
+          new int64.fromInt(-333));
+      expect(new int64.fromInt(-1000) ~/ new int64.fromInt(-3),
+          new int64.fromInt(333));
+      expect(new int64.fromInt(3) ~/ new int64.fromInt(1000),
+          new int64.fromInt(0));
+      expect(new int64.fromInts( 0x12345678, 0x12345678) ~/
+          new int64.fromInts(0x0, 0x123),
+          new int64.fromInts(0x1003d0, 0xe84f5ae8));
+      expect(new int64.fromInts(0x12345678, 0x12345678) ~/
+          new int64.fromInts(0x1234, 0x12345678),
+          new int64.fromInts(0x0, 0x10003));
+      expect(new int64.fromInts(0xf2345678, 0x12345678) ~/
+          new int64.fromInts(0x1234, 0x12345678),
+          new int64.fromInts(0xffffffff, 0xffff3dfe));
+      expect(new int64.fromInts(0xf2345678, 0x12345678) ~/
+          new int64.fromInts(0xffff1234, 0x12345678),
+          new int64.fromInts(0x0, 0xeda));
+      expect(new int64.fromInt(829893893) ~/ new int32.fromInt(1919),
+          new int32.fromInt(432461));
+      expect(new int64.fromInt(829893893) ~/ new int64.fromInt(1919),
+          new int32.fromInt(432461));
+      expect(new int64.fromInt(829893893) ~/ 1919,
+          new int32.fromInt(432461));
+      expect(() => new int64.fromInt(1) ~/ new int64.fromInt(0),
+          throwsA(new isInstanceOf<IntegerDivisionByZeroException>()));
+      expect(int64.MIN_VALUE ~/ new int64.fromInt(2),
+          new int64.fromInts(0xc0000000, 0x00000000));
+      expect(int64.MIN_VALUE ~/ new int64.fromInt(1), int64.MIN_VALUE);
+      expect(int64.MIN_VALUE ~/ new int64.fromInt(-1), int64.MIN_VALUE);
+      expect(() => new int64.fromInt(17) ~/ int64.ZERO, throws);
+      expect(() => new int64.fromInt(17) ~/ null, throws);
+    });
+
+    test("%", () {
+      // Define % as Euclidean mod, with positive result for all arguments
+      expect(int64.ZERO % new int64.fromInt(1000), new int64.fromInt(0));
+      expect(int64.MIN_VALUE % int64.MIN_VALUE, new int64.fromInt(0));
+      expect(new int64.fromInt(1000) % int64.MIN_VALUE,
+          new int64.fromInt(1000));
+      expect(int64.MIN_VALUE % new int64.fromInt(8192), new int64.fromInt(0));
+      expect(int64.MIN_VALUE % new int64.fromInt(8193),
+          new int64.fromInt(6145));
+      expect(new int64.fromInt(-1000) % new int64.fromInt(8192),
+          new int64.fromInt(7192));
+      expect(new int64.fromInt(-1000) % new int64.fromInt(8193),
+          new int64.fromInt(7193));
+      expect(new int64.fromInt(-1000000000) % new int64.fromInt(8192),
+          new int64.fromInt(5632));
+      expect(new int64.fromInt(-1000000000) % new int64.fromInt(8193),
+          new int64.fromInt(4808));
+      expect(new int64.fromInt(1000000000) % new int64.fromInt(8192),
+          new int64.fromInt(2560));
+      expect(new int64.fromInt(1000000000) % new int64.fromInt(8193),
+          new int64.fromInt(3385));
+      expect(int64.MAX_VALUE % new int64.fromInts(0x00000000, 0x00000400),
+          new int64.fromInts(0x0, 0x3ff));
+      expect(int64.MAX_VALUE % new int64.fromInts(0x00000000, 0x00040000),
+          new int64.fromInts(0x0, 0x3ffff));
+      expect(int64.MAX_VALUE % new int64.fromInts(0x00000000, 0x04000000),
+          new int64.fromInts(0x0, 0x3ffffff));
+      expect(int64.MAX_VALUE % new int64.fromInts(0x00000004, 0x00000000),
+          new int64.fromInts(0x3, 0xffffffff));
+      expect(int64.MAX_VALUE % new int64.fromInts(0x00000400, 0x00000000),
+          new int64.fromInts(0x3ff, 0xffffffff));
+      expect(int64.MAX_VALUE % new int64.fromInts(0x00040000, 0x00000000),
+          new int64.fromInts(0x3ffff, 0xffffffff));
+      expect(int64.MAX_VALUE % new int64.fromInts(0x04000000, 0x00000000),
+          new int64.fromInts(0x3ffffff, 0xffffffff));
+      expect(new int64.fromInt(0x12345678).remainder(new int64.fromInt(0x22)),
+          new int64.fromInt(0x12345678.remainder(0x22)));
+      expect(new int64.fromInt(0x12345678).remainder(new int64.fromInt(-0x22)),
+          new int64.fromInt(0x12345678.remainder(-0x22)));
+      expect(new int64.fromInt(-0x12345678).remainder(new int64.fromInt(-0x22)),
+          new int64.fromInt(-0x12345678.remainder(-0x22)));
+      expect(new int64.fromInt(-0x12345678).remainder(new int64.fromInt(0x22)),
+          new int64.fromInt(-0x12345678.remainder(0x22)));
+      expect(new int32.fromInt(0x12345678).remainder(new int64.fromInt(0x22)),
+          new int64.fromInt(0x12345678.remainder(0x22)));
+    });
+  });
+
+  group("comparison operators", () {
+    int64 largeNeg = new int64.fromInts(0x82341234, 0x0);
+    int64 largePos = new int64.fromInts(0x12341234, 0x0);
+    int64 largePosPlusOne = largePos + new int64.fromInt(1);
+
+    test("<", () {
+      expect(new int64.fromInt(10) < new int64.fromInt(11), true);
+      expect(new int64.fromInt(10) < new int64.fromInt(10), false);
+      expect(new int64.fromInt(12) < new int64.fromInt(11), false);
+      expect(new int64.fromInt(-10) < new int64.fromInt(-11), false);
+      expect(int64.MIN_VALUE < new int64.fromInt(0), true);
+      expect(largeNeg < largePos, true);
+      expect(largePos < largePosPlusOne, true);
+      expect(largePos < largePos, false);
+      expect(largePosPlusOne < largePos, false);
+      expect(int64.MIN_VALUE < int64.MAX_VALUE, true);
+      expect(int64.MAX_VALUE < int64.MIN_VALUE, false);
+      expect(() => new int64.fromInt(17) < null, throwsArgumentError);
+    });
+
+    test("<=", () {
+      expect(new int64.fromInt(10) <= new int64.fromInt(11), true);
+      expect(new int64.fromInt(10) <= new int64.fromInt(10), true);
+      expect(new int64.fromInt(12) <= new int64.fromInt(11), false);
+      expect(new int64.fromInt(-10) <= new int64.fromInt(-11), false);
+      expect(new int64.fromInt(-10) <= new int64.fromInt(-10), true);
+      expect(largeNeg <= largePos, true);
+      expect(largePos <= largeNeg, false);
+      expect(largePos <= largePosPlusOne, true);
+      expect(largePos <= largePos, true);
+      expect(largePosPlusOne <= largePos, false);
+      expect(int64.MIN_VALUE <= int64.MAX_VALUE, true);
+      expect(int64.MAX_VALUE <= int64.MIN_VALUE, false);
+      expect(() => new int64.fromInt(17) <= null, throwsArgumentError);
+    });
+
+    test("==", () {
+      expect(new int64.fromInt(10) == new int64.fromInt(11), false);
+      expect(new int64.fromInt(10) == new int64.fromInt(10), true);
+      expect(new int64.fromInt(12) == new int64.fromInt(11), false);
+      expect(new int64.fromInt(-10) == new int64.fromInt(-10), true);
+      expect(new int64.fromInt(-10) != new int64.fromInt(-10), false);
+      expect(largePos == largePos, true);
+      expect(largePos == largePosPlusOne, false);
+      expect(largePosPlusOne == largePos, false);
+      expect(int64.MIN_VALUE == int64.MAX_VALUE, false);
+      expect(new int64.fromInt(17) == null, false);
+    });
+
+    test(">=", () {
+      expect(new int64.fromInt(10) >= new int64.fromInt(11), false);
+      expect(new int64.fromInt(10) >= new int64.fromInt(10), true);
+      expect(new int64.fromInt(12) >= new int64.fromInt(11), true);
+      expect(new int64.fromInt(-10) >= new int64.fromInt(-11), true);
+      expect(new int64.fromInt(-10) >= new int64.fromInt(-10), true);
+      expect(largePos >= largeNeg, true);
+      expect(largeNeg >= largePos, false);
+      expect(largePos >= largePosPlusOne, false);
+      expect(largePos >= largePos, true);
+      expect(largePosPlusOne >= largePos, true);
+      expect(int64.MIN_VALUE >= int64.MAX_VALUE, false);
+      expect(int64.MAX_VALUE >= int64.MIN_VALUE, true);
+      expect(() => new int64.fromInt(17) >= null, throwsArgumentError);
+    });
+
+    test(">", () {
+      expect(new int64.fromInt(10) > new int64.fromInt(11), false);
+      expect(new int64.fromInt(10) > new int64.fromInt(10), false);
+      expect(new int64.fromInt(12) > new int64.fromInt(11), true);
+      expect(new int64.fromInt(-10) > new int64.fromInt(-11), true);
+      expect(new int64.fromInt(10) > new int64.fromInt(-11), true);
+      expect(new int64.fromInt(-10) > new int64.fromInt(11), false);
+      expect(largePos > largeNeg, true);
+      expect(largeNeg > largePos, false);
+      expect(largePos > largePosPlusOne, false);
+      expect(largePos > largePos, false);
+      expect(largePosPlusOne > largePos, true);
+      expect(new int64.fromInt(0) > int64.MIN_VALUE, true);
+      expect(int64.MIN_VALUE > int64.MAX_VALUE, false);
+      expect(int64.MAX_VALUE > int64.MIN_VALUE, true);
+      expect(() => new int64.fromInt(17) > null, throwsArgumentError);
+    });
+  });
+
+  group("bitwise operators", () {
     int64 n1 = new int64.fromInt(1234);
     int64 n2 = new int64.fromInt(9876);
-
-    Expect.equals(new int64.fromInt(1168), n1 & n2);
-    Expect.equals(new int64.fromInt(9942), n1 | n2);
-    Expect.equals(new int64.fromInt(8774), n1 ^ n2);
-    Expect.equals(new int64.fromInt(-1235), ~n1);
-    Expect.equals(new int64.fromInt(-9877), ~n2);
-  }
-
-  {
-    int64 n1 = new int64.fromInt(-1234);
-    int64 n2 = new int64.fromInt(9876);
-    Expect.equals(new int64.fromInt(8708), n1 & n2);
-    Expect.equals(new int64.fromInt(-66), n1 | n2);
-    Expect.equals(new int64.fromInt(-8774), n1 ^ n2);
-    Expect.equals(new int64.fromInt(1233), ~n1);
-    Expect.equals(new int64.fromInt(-9877), ~n2);
-  }
-
-  {
-    int64 n1 = new int64.fromInt(0x1234) << 32;
-    int64 n2 = new int64.fromInt(0x9876) << 32;
-    Expect.equals(new int64.fromInt(0x1034) << 32, n1 & n2);
-    Expect.equals(new int64.fromInt(0x9a76) << 32, n1 | n2);
-    Expect.equals(new int64.fromInt(0x8a42) << 32, n1 ^ n2);
-    Expect.equals(new int64.fromInts(0xffffedcb, 0xffffffff), ~n1);
-    Expect.equals(new int64.fromInts(0xffff6789, 0xffffffff), ~n2);
-  }
+    int64 n3 = new int64.fromInt(-1234);
+    int64 n4 = new int64.fromInt(0x1234) << 32;
+    int64 n5 = new int64.fromInt(0x9876) << 32;
+
+    test("&", () {
+      expect(n1 & n2, new int64.fromInt(1168));
+      expect(n3 & n2, new int64.fromInt(8708));
+      expect(n4 & n5, new int64.fromInt(0x1034) << 32);
+      expect(() => n1 & null, throws);
+    });
+
+    test("|", () {
+      expect(n1 | n2, new int64.fromInt(9942));
+      expect(n3 | n2, new int64.fromInt(-66));
+      expect(n4 | n5, new int64.fromInt(0x9a76) << 32);
+      expect(() => n1 | null, throws);
+    });
+
+    test("^", () {
+      expect(n1 ^ n2, new int64.fromInt(8774));
+      expect(n3 ^ n2, new int64.fromInt(-8774));
+      expect(n4 ^ n5, new int64.fromInt(0x8a42) << 32);
+      expect(() => n1 ^ null, throws);
+    });
+
+    test("~", () {
+      expect(-new int64.fromInt(1), new int64.fromInt(-1));
+      expect(-new int64.fromInt(-1), new int64.fromInt(1));
+      expect(-int64.MIN_VALUE, int64.MIN_VALUE);
+
+      expect(~n1, new int64.fromInt(-1235));
+      expect(~n2, new int64.fromInt(-9877));
+      expect(~n3, new int64.fromInt(1233));
+      expect(~n4, new int64.fromInts(0xffffedcb, 0xffffffff));
+      expect(~n5, new int64.fromInts(0xffff6789, 0xffffffff));
+    });
+  });
+
+  group("bitshift operators", () {
+    test("<<", () {
+      expect(new int64.fromInts(0x12341234, 0x45674567) << 10,
+          new int64.fromInts(0xd048d115, 0x9d159c00));
+      expect(new int64.fromInts(0x92341234, 0x45674567) << 10,
+          new int64.fromInts(0xd048d115, 0x9d159c00));
+      expect(new int64.fromInt(-1) << 5, new int64.fromInt(-32));
+      expect(new int64.fromInt(-1) << 0, new int64.fromInt(-1));
+      expect(() => new int64.fromInt(17) << -1, throwsArgumentError);
+      expect(() => new int64.fromInt(17) << null, throws);
+    });
+
+    test(">>", () {
+      expect((int64.MIN_VALUE >> 13).toString(), "-1125899906842624");
+      expect(new int64.fromInts(0x12341234, 0x45674567) >> 10,
+          new int64.fromInts(0x48d04, 0x8d1159d1));
+      expect(new int64.fromInts(0x92341234, 0x45674567) >> 10,
+          new int64.fromInts(0xffe48d04, 0x8d1159d1));
+      expect(new int64.fromInts(0xFFFFFFF, 0xFFFFFFFF) >> 34,
+          new int64.fromInt(67108863));
+      for (int n = 0; n <= 66; n++) {
+        expect(new int64.fromInt(-1) >> n, new int64.fromInt(-1));
+      }
+      expect(new int64.fromInts(0x72345678, 0x9abcdef0) >> 8,
+          new int64.fromInts(0x00723456, 0x789abcde));
+      expect(new int64.fromInts(0x72345678, 0x9abcdef0) >> 16,
+          new int64.fromInts(0x00007234, 0x56789abc));
+      expect(new int64.fromInts(0x72345678, 0x9abcdef0) >> 24,
+          new int64.fromInts(0x00000072, 0x3456789a));
+      expect(new int64.fromInts(0x72345678, 0x9abcdef0) >> 28,
+          new int64.fromInts(0x00000007, 0x23456789));
+      expect(new int64.fromInts(0x72345678, 0x9abcdef0) >> 32,
+          new int64.fromInts(0x00000000, 0x72345678));
+      expect(new int64.fromInts(0x72345678, 0x9abcdef0) >> 36,
+          new int64.fromInts(0x00000000, 0x07234567));
+      expect(new int64.fromInts(0x72345678, 0x9abcdef0) >> 40,
+          new int64.fromInts(0x00000000, 0x00723456));
+      expect(new int64.fromInts(0x72345678, 0x9abcde00) >> 44,
+          new int64.fromInts(0x00000000, 0x00072345));
+      expect(new int64.fromInts(0x72345678, 0x9abcdef0) >> 48,
+          new int64.fromInts(0x00000000, 0x00007234));
+      expect(new int64.fromInts(0x92345678, 0x9abcdef0) >> 8,
+          new int64.fromInts(0xff923456, 0x789abcde));
+      expect(new int64.fromInts(0x92345678, 0x9abcdef0) >> 16,
+          new int64.fromInts(0xffff9234, 0x56789abc));
+      expect(new int64.fromInts(0x92345678, 0x9abcdef0) >> 24,
+          new int64.fromInts(0xffffff92, 0x3456789a));
+      expect(new int64.fromInts(0x92345678, 0x9abcdef0) >> 28,
+          new int64.fromInts(0xfffffff9, 0x23456789));
+      expect(new int64.fromInts(0x92345678, 0x9abcdef0) >> 32,
+          new int64.fromInts(0xffffffff, 0x92345678));
+      expect(new int64.fromInts(0x92345678, 0x9abcdef0) >> 36,
+          new int64.fromInts(0xffffffff, 0xf9234567));
+      expect(new int64.fromInts(0x92345678, 0x9abcdef0) >> 40,
+          new int64.fromInts(0xffffffff, 0xff923456));
+      expect(new int64.fromInts(0x92345678, 0x9abcdef0) >> 44,
+          new int64.fromInts(0xffffffff, 0xfff92345));
+      expect(new int64.fromInts(0x92345678, 0x9abcdef0) >> 48,
+          new int64.fromInts(0xffffffff, 0xffff9234));
+      expect(() => new int64.fromInt(17) >> -1, throwsArgumentError);
+      expect(() => new int64.fromInt(17) >> null, throws);
+    });
+
+    test("shiftRightUnsigned", () {
+      expect(new int64.fromInts(0x12341234, 0x45674567).shiftRightUnsigned(10),
+          new int64.fromInts(0x48d04, 0x8d1159d1));
+      expect(new int64.fromInts(0x92341234, 0x45674567).shiftRightUnsigned(10),
+          new int64.fromInts(0x248d04, 0x8d1159d1));
+      expect(new int64.fromInts(0x72345678, 0x9abcdef0).shiftRightUnsigned(8),
+          new int64.fromInts(0x00723456, 0x789abcde));
+      expect(new int64.fromInts(0x72345678, 0x9abcdef0).shiftRightUnsigned(16),
+          new int64.fromInts(0x00007234, 0x56789abc));
+      expect(new int64.fromInts(0x72345678, 0x9abcdef0).shiftRightUnsigned(24),
+          new int64.fromInts(0x00000072, 0x3456789a));
+      expect(new int64.fromInts(0x72345678, 0x9abcdef0).shiftRightUnsigned(28),
+          new int64.fromInts(0x00000007, 0x23456789));
+      expect(new int64.fromInts(0x72345678, 0x9abcdef0).shiftRightUnsigned(32),
+          new int64.fromInts(0x00000000, 0x72345678));
+      expect(new int64.fromInts(0x72345678, 0x9abcdef0).shiftRightUnsigned(36),
+          new int64.fromInts(0x00000000, 0x07234567));
+      expect(new int64.fromInts(0x72345678, 0x9abcdef0).shiftRightUnsigned(40),
+          new int64.fromInts(0x00000000, 0x00723456));
+      expect(new int64.fromInts(0x72345678, 0x9abcde00).shiftRightUnsigned(44),
+          new int64.fromInts(0x00000000, 0x00072345));
+      expect(new int64.fromInts(0x72345678, 0x9abcdef0).shiftRightUnsigned(48),
+          new int64.fromInts(0x00000000, 0x00007234));
+      expect(new int64.fromInts(0x92345678, 0x9abcdef0).shiftRightUnsigned(8),
+          new int64.fromInts(0x00923456, 0x789abcde));
+      expect(new int64.fromInts(0x92345678, 0x9abcdef0).shiftRightUnsigned(16),
+          new int64.fromInts(0x00009234, 0x56789abc));
+      expect(new int64.fromInts(0x92345678, 0x9abcdef0).shiftRightUnsigned(24),
+          new int64.fromInts(0x00000092, 0x3456789a));
+      expect(new int64.fromInts(0x92345678, 0x9abcdef0).shiftRightUnsigned(28),
+          new int64.fromInts(0x00000009, 0x23456789));
+      expect(new int64.fromInts(0x92345678, 0x9abcdef0).shiftRightUnsigned(32),
+          new int64.fromInts(0x00000000, 0x92345678));
+      expect(new int64.fromInts(0x92345678, 0x9abcdef0).shiftRightUnsigned(36),
+          new int64.fromInts(0x00000000, 0x09234567));
+      expect(new int64.fromInts(0x92345678, 0x9abcdef0).shiftRightUnsigned(40),
+          new int64.fromInts(0x00000000, 0x00923456));
+      expect(new int64.fromInts(0x92345678, 0x9abcdef0).shiftRightUnsigned(44),
+          new int64.fromInts(0x00000000, 0x00092345));
+      expect(new int64.fromInts(0x00000000, 0x00009234),
+          new int64.fromInts(0x92345678, 0x9abcdef0).shiftRightUnsigned(48));
+      expect(() => new int64.fromInt(17).shiftRightUnsigned(-1),
+          throwsArgumentError);
+      expect(() => new int64.fromInt(17).shiftRightUnsigned(null), throws);
+    });
+
+    test("overflow", () {
+      expect((new int64.fromInt(1) << 63) >> 1,
+          -new int64.fromInts(0x40000000, 0x00000000));
+      expect((new int64.fromInt(-1) << 32) << 32, new int64.fromInt(0));
+      expect(int64.MIN_VALUE << 0, int64.MIN_VALUE);
+      expect(int64.MIN_VALUE << 1, new int64.fromInt(0));
+      expect((-new int64.fromInts(8, 0)) >> 1,
+          new int64.fromInts(0xfffffffc, 0x00000000));
+      expect((-new int64.fromInts(8, 0)).shiftRightUnsigned(1),
+          new int64.fromInts(0x7ffffffc, 0x0));
+    });
+  });
+
+  group("type conversions", () {
+    test("toInt", () {
+      expect(new int64.fromInt(0).toInt(), 0);
+      expect(new int64.fromInt(100).toInt(), 100);
+      expect(new int64.fromInt(-100).toInt(), -100);
+      expect(new int64.fromInt(2147483647).toInt(), 2147483647);
+      expect(new int64.fromInt(2147483648).toInt(), 2147483648);
+      expect(new int64.fromInt(-2147483647).toInt(), -2147483647);
+      expect(new int64.fromInt(-2147483648).toInt(), -2147483648);
+      expect(new int64.fromInt(4503599627370495).toInt(), 4503599627370495);
+      expect(new int64.fromInt(4503599627370496).toInt(), 4503599627370496);
+      expect(new int64.fromInt(-4503599627370495).toInt(), -4503599627370495);
+      expect(new int64.fromInt(-4503599627370496).toInt(), -4503599627370496);
+    });
+
+    test("toInt32", () {
+      expect(new int64.fromInt(0).toInt32(), new int32.fromInt(0));
+      expect(new int64.fromInt(1).toInt32(), new int32.fromInt(1));
+      expect(new int64.fromInt(-1).toInt32(), new int32.fromInt(-1));
+      expect(new int64.fromInt(2147483647).toInt32(),
+          new int32.fromInt(2147483647));
+      expect(new int64.fromInt(2147483648).toInt32(),
+          new int32.fromInt(-2147483648));
+      expect(new int64.fromInt(2147483649).toInt32(),
+          new int32.fromInt(-2147483647));
+      expect(new int64.fromInt(2147483650).toInt32(),
+          new int32.fromInt(-2147483646));
+      expect(new int64.fromInt(-2147483648).toInt32(),
+          new int32.fromInt(-2147483648));
+      expect(new int64.fromInt(-2147483649).toInt32(),
+          new int32.fromInt(2147483647));
+      expect(new int64.fromInt(-2147483650).toInt32(),
+          new int32.fromInt(2147483646));
+      expect(new int64.fromInt(-2147483651).toInt32(),
+          new int32.fromInt(2147483645));
+    });
+  });
+
+  test("JavaScript 53-bit integer boundary", () {
+    int64 _factorial(int64 n) {
+      if (n.isZero) {
+        return new int64.fromInt(1);
+      } else {
+        return n * _factorial(n - new int64.fromInt(1));
+      }
+    }
+    int64 fact18 = _factorial(new int64.fromInt(18));
+    int64 fact17 = _factorial(new int64.fromInt(17));
+    expect(fact18 ~/ fact17, new int64.fromInt(18));
+  });
+
+  test("min, max values", () {
+    expect(new int64.fromInt(1) << 63, int64.MIN_VALUE);
+    expect(-(int64.MIN_VALUE + new int64.fromInt(1)), int64.MAX_VALUE);
+  });
+
+  group("string representation", () {
+    test("toString", () {
+      expect(new int64.fromInt(0).toString(), "0");
+      expect(new int64.fromInt(1).toString(), "1");
+      expect(new int64.fromInt(-1).toString(), "-1");
+      expect(new int64.fromInt(-10).toString(), "-10");
+      expect(int64.MIN_VALUE.toString(), "-9223372036854775808");
+      expect(int64.MAX_VALUE.toString(), "9223372036854775807");
+
+      int top = 922337201;
+      int bottom = 967490662;
+      int64 fullnum = (new int64.fromInt(1000000000) * new int64.fromInt(top)) +
+          new int64.fromInt(bottom);
+      expect(fullnum.toString(), "922337201967490662");
+      expect((-fullnum).toString(), "-922337201967490662");
+      expect(new int64.fromInt(123456789).toString(), "123456789");
+    });
+
+    test("toHexString", () {
+      int64 deadbeef12341234 = new int64.fromInts(0xDEADBEEF, 0x12341234);
+      expect(int64.ZERO.toHexString(), "0");
+      expect(deadbeef12341234.toHexString(), "DEADBEEF12341234");
+      expect(new int64.fromInts(0x17678A7, 0xDEF01234).toHexString(),
+          "17678A7DEF01234");
+      expect(new int64.fromInt(123456789).toHexString(), "75BCD15");
+    });
+
+    test("toRadixString", () {
+      expect(new int64.fromInt(123456789).toRadixString(5), "223101104124");
+      expect(int64.MIN_VALUE.toRadixString(2),
+          "-1000000000000000000000000000000000000000000000000000000000000000");
+      expect(int64.MIN_VALUE.toRadixString(3),
+          "-2021110011022210012102010021220101220222");
+      expect(int64.MIN_VALUE.toRadixString(4),
+          "-20000000000000000000000000000000");
+      expect(int64.MIN_VALUE.toRadixString(5), "-1104332401304422434310311213");
+      expect(int64.MIN_VALUE.toRadixString(6), "-1540241003031030222122212");
+      expect(int64.MIN_VALUE.toRadixString(7), "-22341010611245052052301");
+      expect(int64.MIN_VALUE.toRadixString(8), "-1000000000000000000000");
+      expect(int64.MIN_VALUE.toRadixString(9), "-67404283172107811828");
+      expect(int64.MIN_VALUE.toRadixString(10), "-9223372036854775808");
+      expect(int64.MIN_VALUE.toRadixString(11), "-1728002635214590698");
+      expect(int64.MIN_VALUE.toRadixString(12), "-41A792678515120368");
+      expect(int64.MIN_VALUE.toRadixString(13), "-10B269549075433C38");
+      expect(int64.MIN_VALUE.toRadixString(14), "-4340724C6C71DC7A8");
+      expect(int64.MIN_VALUE.toRadixString(15), "-160E2AD3246366808");
+      expect(int64.MIN_VALUE.toRadixString(16), "-8000000000000000");
+      expect(int64.MAX_VALUE.toRadixString(2),
+          "111111111111111111111111111111111111111111111111111111111111111");
+      expect(int64.MAX_VALUE.toRadixString(3),
+          "2021110011022210012102010021220101220221");
+      expect(int64.MAX_VALUE.toRadixString(4),
+          "13333333333333333333333333333333");
+      expect(int64.MAX_VALUE.toRadixString(5), "1104332401304422434310311212");
+      expect(int64.MAX_VALUE.toRadixString(6), "1540241003031030222122211");
+      expect(int64.MAX_VALUE.toRadixString(7), "22341010611245052052300");
+      expect(int64.MAX_VALUE.toRadixString(8), "777777777777777777777");
+      expect(int64.MAX_VALUE.toRadixString(9), "67404283172107811827");
+      expect(int64.MAX_VALUE.toRadixString(10), "9223372036854775807");
+      expect(int64.MAX_VALUE.toRadixString(11), "1728002635214590697");
+      expect(int64.MAX_VALUE.toRadixString(12), "41A792678515120367");
+      expect(int64.MAX_VALUE.toRadixString(13), "10B269549075433C37");
+      expect(int64.MAX_VALUE.toRadixString(14), "4340724C6C71DC7A7");
+      expect(int64.MAX_VALUE.toRadixString(15), "160E2AD3246366807");
+      expect(int64.MAX_VALUE.toRadixString(16), "7FFFFFFFFFFFFFFF");
+    });
+  });
 }
-
-void testComparisons() {
-  Expect.isTrue(new int64.fromInt(10) < new int64.fromInt(11));
-  Expect.isTrue(new int64.fromInt(10) <= new int64.fromInt(11));
-  Expect.isTrue(!(new int64.fromInt(10) == new int64.fromInt(11)));
-  Expect.isTrue(!(new int64.fromInt(10) >= new int64.fromInt(11)));
-  Expect.isTrue(!(new int64.fromInt(10) > new int64.fromInt(11)));
-
-  Expect.isTrue(!(new int64.fromInt(10) < new int64.fromInt(10)));
-  Expect.isTrue(new int64.fromInt(10) <= new int64.fromInt(10));
-  Expect.isTrue(new int64.fromInt(10) == new int64.fromInt(10));
-  Expect.isTrue(new int64.fromInt(10) >= new int64.fromInt(10));
-  Expect.isTrue(!(new int64.fromInt(10) > new int64.fromInt(10)));
-
-  Expect.isTrue(!(new int64.fromInt(12) < new int64.fromInt(11)));
-  Expect.isTrue(!(new int64.fromInt(12) <= new int64.fromInt(11)));
-  Expect.isTrue(!(new int64.fromInt(12) == new int64.fromInt(11)));
-  Expect.isTrue(new int64.fromInt(12) >= new int64.fromInt(11));
-  Expect.isTrue(new int64.fromInt(12) > new int64.fromInt(11));
-
-  Expect.isTrue(new int64.fromInt(-10) > new int64.fromInt(-11));
-  Expect.isTrue(new int64.fromInt(10) > new int64.fromInt(-11));
-  Expect.isTrue(!(new int64.fromInt(-10) > new int64.fromInt(11)));
-  Expect.isTrue(new int64.fromInt(-10) >= new int64.fromInt(-11));
-  Expect.isTrue(new int64.fromInt(-10) >= new int64.fromInt(-10));
-  Expect.isTrue(!(new int64.fromInt(-10) < new int64.fromInt(-11)));
-  Expect.isTrue(!(new int64.fromInt(-10) <= new int64.fromInt(-11)));
-  Expect.isTrue(new int64.fromInt(-10) <= new int64.fromInt(-10));
-  Expect.isTrue(new int64.fromInt(-10) == new int64.fromInt(-10));
-  Expect.isTrue(!(new int64.fromInt(-10) != new int64.fromInt(-10)));
-
-  // the following three comparisons cannot be implemented by
-  // subtracting the arguments, because the subtraction causes an overflow
-  int64 largeNeg = new int64.fromInts(0x82341234, 0x0);
-  int64 largePos = new int64.fromInts(0x12341234, 0x0);
-  Expect.isTrue(largeNeg < largePos);
-
-  Expect.isTrue(int64.MIN_VALUE < new int64.fromInt(0));
-  Expect.isTrue(new int64.fromInt(0) > int64.MIN_VALUE);
-
-  int64 largePosPlusOne = largePos + new int64.fromInt(1);
-
-  Expect.isTrue(largePos < largePosPlusOne);
-  Expect.isTrue(largePos <= largePosPlusOne);
-  Expect.isTrue(!(largePos == largePosPlusOne));
-  Expect.isTrue(!(largePos >= largePosPlusOne));
-  Expect.isTrue(!(largePos > largePosPlusOne));
-
-  Expect.isTrue(!(largePos < largePos));
-  Expect.isTrue(largePos <= largePos);
-  Expect.isTrue(largePos == largePos);
-  Expect.isTrue(largePos >= largePos);
-  Expect.isTrue(!(largePos > largePos));
-
-  Expect.isTrue(!(largePosPlusOne < largePos));
-  Expect.isTrue(!(largePosPlusOne <= largePos));
-  Expect.isTrue(!(largePosPlusOne == largePos));
-  Expect.isTrue(largePosPlusOne >= largePos);
-  Expect.isTrue(largePosPlusOne > largePos);
-
-  try {
-    new int64.fromInt(17) < null;
-    Expect.fail("x < null should throw ArgumentError");
-  } on ArgumentError catch (e) {
-  }
-
-  try {
-    new int64.fromInt(17) <= null;
-    Expect.fail("x <= null should throw ArgumentError");
-  } on ArgumentError catch (e) {
-  }
-
-  try {
-    new int64.fromInt(17) > null;
-    Expect.fail("x > null should throw ArgumentError");
-  } on ArgumentError catch (e) {
-  }
-
-  try {
-    new int64.fromInt(17) < null;
-    Expect.fail("x >= null should throw ArgumentError");
-  } on ArgumentError catch (e) {
-  }
-
-  Expect.isFalse(new int64.fromInt(17) == null);
-}
-
-void testConversions() {
-  Expect.equals(0, new int64.fromInt(0).toInt());
-  Expect.equals(100, new int64.fromInt(100).toInt());
-  Expect.equals(-100, new int64.fromInt(-100).toInt());
-  Expect.equals(2147483647, new int64.fromInt(2147483647).toInt());
-  Expect.equals(2147483648, new int64.fromInt(2147483648).toInt());
-  Expect.equals(-2147483647, new int64.fromInt(-2147483647).toInt());
-  Expect.equals(-2147483648, new int64.fromInt(-2147483648).toInt());
-  Expect.equals(4503599627370495, new int64.fromInt(4503599627370495).toInt());
-  Expect.equals(4503599627370496, new int64.fromInt(4503599627370496).toInt());
-  Expect.equals(-4503599627370495,
-      new int64.fromInt(-4503599627370495).toInt());
-  Expect.equals(-4503599627370496,
-      new int64.fromInt(-4503599627370496).toInt());
-
-  Expect.equals(new int32.fromInt(0), new int64.fromInt(0).toInt32());
-  Expect.equals(new int32.fromInt(1), new int64.fromInt(1).toInt32());
-  Expect.equals(new int32.fromInt(-1), new int64.fromInt(-1).toInt32());
-  Expect.equals(new int32.fromInt(2147483647),
-    new int64.fromInt(2147483647).toInt32());
-  Expect.equals(new int32.fromInt(-2147483648),
-      new int64.fromInt(2147483648).toInt32());
-  Expect.equals(new int32.fromInt(-2147483647),
-      new int64.fromInt(2147483649).toInt32());
-  Expect.equals(new int32.fromInt(-2147483646),
-      new int64.fromInt(2147483650).toInt32());
-
-  Expect.equals(new int32.fromInt(-2147483648),
-      new int64.fromInt(-2147483648).toInt32());
-  Expect.equals(new int32.fromInt(2147483647),
-      new int64.fromInt(-2147483649).toInt32());
-  Expect.equals(new int32.fromInt(2147483646),
-      new int64.fromInt(-2147483650).toInt32());
-  Expect.equals(new int32.fromInt(2147483645),
-      new int64.fromInt(-2147483651).toInt32());
-}
-
-void testDiv() {
-  int64 deadBeef = new int64.fromInts(0xDEADBEEF, 0xDEADBEEF);
-  int64 ten = new int64.fromInt(10);
-  Expect.equals(new int64.fromInts(0xfcaaf97e, 0x63115fe5), deadBeef ~/ ten);
-  Expect.equals(int64.ZERO, int64.ONE ~/ int64.TWO);
-  Expect.equals(new int64.fromInts(0x3fffffff, 0xffffffff),
-    int64.MAX_VALUE ~/ int64.TWO);
-
-  Expect.equals(int64.ZERO, int64.ZERO ~/ new int64.fromInt(1000));
-  Expect.equals(int64.ONE, int64.MIN_VALUE ~/ int64.MIN_VALUE);
-  Expect.equals(int64.ZERO, new int64.fromInt(1000) ~/ int64.MIN_VALUE);
-
-  Expect.equals("-1125899906842624",
-    (int64.MIN_VALUE ~/ new int64.fromInt(8192)).toString());
-  Expect.equals("-1125762484664320",
-    (int64.MIN_VALUE ~/ new int64.fromInt(8193)).toString());
-  Expect.equals(int64.ZERO,
-    new int64.fromInt(-1000) ~/ new int64.fromInt(8192));
-  Expect.equals(int64.ZERO,
-    new int64.fromInt(-1000) ~/ new int64.fromInt(8193));
-  Expect.equals(new int64.fromInt(-122070),
-    new int64.fromInt(-1000000000) ~/ new int64.fromInt(8192));
-  Expect.equals(new int64.fromInt(-122055),
-    new int64.fromInt(-1000000000) ~/ new int64.fromInt(8193));
-  Expect.equals(new int64.fromInt(122070),
-    new int64.fromInt(1000000000) ~/ new int64.fromInt(8192));
-  Expect.equals(new int64.fromInt(122055),
-    new int64.fromInt(1000000000) ~/ new int64.fromInt(8193));
-
-  Expect.equals(new int64.fromInts(0x1fffff, 0xffffffff),
-    int64.MAX_VALUE ~/ new int64.fromInts(0x00000000, 0x00000400));
-  Expect.equals(new int64.fromInts(0x1fff, 0xffffffff),
-    int64.MAX_VALUE ~/ new int64.fromInts(0x00000000, 0x00040000));
-  Expect.equals(new int64.fromInts(0x1f, 0xffffffff),
-    int64.MAX_VALUE ~/ new int64.fromInts(0x00000000, 0x04000000));
-  Expect.equals(new int64.fromInt(536870911),
-    int64.MAX_VALUE ~/ new int64.fromInts(0x00000004, 0x00000000));
-  Expect.equals(new int64.fromInt(2097151),
-    int64.MAX_VALUE ~/ new int64.fromInts(0x00000400, 0x00000000));
-  Expect.equals(new int64.fromInt(8191),
-    int64.MAX_VALUE ~/ new int64.fromInts(0x00040000, 0x00000000));
-  Expect.equals(new int64.fromInt(31),
-    int64.MAX_VALUE ~/ new int64.fromInts(0x04000000, 0x00000000));
-
-  Expect.equals(new int64.fromInts(0x2AAAAA, 0xAAAAAAAA),
-      int64.MAX_VALUE ~/ new int64.fromInts(0x00000000, 0x00000300));
-  Expect.equals(new int64.fromInts(0x2, 0xAAAAAAAA),
-      int64.MAX_VALUE ~/ new int64.fromInts(0x00000000, 0x30000000));
-  Expect.equals(new int64.fromInt(0x2AA),
-      int64.MAX_VALUE ~/ new int64.fromInts(0x00300000, 0x00000000));
-
-  Expect.equals(new int64.fromInts(0x708, 0x002E9501),
-      int64.MAX_VALUE ~/ new int64.fromInt(0x123456));
-  Expect.equals(new int64.fromInt(0x3BDA9),
-      int64.MAX_VALUE % new int64.fromInt(0x123456));
-}
-
-void testFactorial() {
-
-  int64 _fact(int64 n) {
-    if (n.isZero) {
-      return new int64.fromInt(1);
-    } else {
-      return n * _fact(n - new int64.fromInt(1));
-    }
-  }
-
-  int64 fact18 = _fact(new int64.fromInt(18));
-  int64 fact17 = _fact(new int64.fromInt(17));
-  Expect.equals(new int64.fromInt(18), fact18 ~/ fact17);
-}
-
-void testMinMax() {
-  Expect.equals(int64.MIN_VALUE, new int64.fromInt(1) << 63);
-  Expect.equals(int64.MAX_VALUE, -(int64.MIN_VALUE + new int64.fromInt(1)));
-}
-
-// Define % as Euclidean mod, with positive result for all arguments
-void testMod() {
-  Expect.equals(new int64.fromInt(0), int64.ZERO % new int64.fromInt(1000));
-  Expect.equals(new int64.fromInt(0), int64.MIN_VALUE % int64.MIN_VALUE);
-  Expect.equals(new int64.fromInt(1000),
-    new int64.fromInt(1000) % int64.MIN_VALUE);
-  Expect.equals(new int64.fromInt(0),
-    int64.MIN_VALUE % new int64.fromInt(8192));
-  Expect.equals(new int64.fromInt(6145),
-    int64.MIN_VALUE % new int64.fromInt(8193));
-
-  Expect.equals(new int64.fromInt(7192),
-    new int64.fromInt(-1000) % new int64.fromInt(8192));
-  Expect.equals(new int64.fromInt(7193),
-    new int64.fromInt(-1000) % new int64.fromInt(8193));
-  Expect.equals(new int64.fromInt(5632),
-    new int64.fromInt(-1000000000) % new int64.fromInt(8192));
-  Expect.equals(new int64.fromInt(4808),
-    new int64.fromInt(-1000000000) % new int64.fromInt(8193));
-  Expect.equals(new int64.fromInt(2560),
-    new int64.fromInt(1000000000) % new int64.fromInt(8192));
-  Expect.equals(new int64.fromInt(3385),
-    new int64.fromInt(1000000000) % new int64.fromInt(8193));
-
-  Expect.equals(new int64.fromInts(0x0, 0x3ff),
-    int64.MAX_VALUE % new int64.fromInts(0x00000000, 0x00000400));
-  Expect.equals(new int64.fromInts(0x0, 0x3ffff),
-    int64.MAX_VALUE % new int64.fromInts(0x00000000, 0x00040000));
-  Expect.equals(new int64.fromInts(0x0, 0x3ffffff),
-    int64.MAX_VALUE % new int64.fromInts(0x00000000, 0x04000000));
-  Expect.equals(new int64.fromInts(0x3, 0xffffffff),
-    int64.MAX_VALUE % new int64.fromInts(0x00000004, 0x00000000));
-  Expect.equals(new int64.fromInts(0x3ff, 0xffffffff),
-    int64.MAX_VALUE % new int64.fromInts(0x00000400, 0x00000000));
-  Expect.equals(new int64.fromInts(0x3ffff, 0xffffffff),
-    int64.MAX_VALUE % new int64.fromInts(0x00040000, 0x00000000));
-  Expect.equals(new int64.fromInts(0x3ffffff, 0xffffffff),
-    int64.MAX_VALUE % new int64.fromInts(0x04000000, 0x00000000));
-
-  Expect.equals(new int64.fromInt(0x12345678.remainder(0x22)),
-      new int64.fromInt(0x12345678).remainder(new int64.fromInt(0x22)));
-  Expect.equals(new int64.fromInt(0x12345678.remainder(-0x22)),
-      new int64.fromInt(0x12345678).remainder(new int64.fromInt(-0x22)));
-  Expect.equals(new int64.fromInt(-0x12345678.remainder(-0x22)),
-      new int64.fromInt(-0x12345678).remainder(new int64.fromInt(-0x22)));
-  Expect.equals(new int64.fromInt(-0x12345678.remainder(0x22)),
-      new int64.fromInt(-0x12345678).remainder(new int64.fromInt(0x22)));
-  Expect.equals(new int64.fromInt(0x12345678.remainder(0x22)),
-      new int32.fromInt(0x12345678).remainder(new int64.fromInt(0x22)));
-}
-
-void testMultiplicative() {
-  Expect.equals(new int64.fromInt(3333),
-    new int64.fromInt(1111) * new int64.fromInt(3));
-  Expect.equals(new int64.fromInt(-3333),
-    new int64.fromInt(1111) * new int64.fromInt(-3));
-  Expect.equals(new int64.fromInt(-3333),
-    new int64.fromInt(-1111) * new int64.fromInt(3));
-  Expect.equals(new int64.fromInt(3333),
-    new int64.fromInt(-1111) * new int64.fromInt(-3));
-  Expect.equals(new int64.fromInt(0),
-    new int64.fromInt(100) * new int64.fromInt(0));
-
-  Expect.equals(new int64.fromInts(0x7ff63f7c, 0x1df4d840),
-      new int64.fromInts(0x12345678, 0x12345678) *
-      new int64.fromInts(0x1234, 0x12345678));
-  Expect.equals(new int64.fromInts(0x7ff63f7c, 0x1df4d840),
-      new int64.fromInts(0xf2345678, 0x12345678) *
-      new int64.fromInts(0x1234, 0x12345678));
-  Expect.equals(new int64.fromInts(0x297e3f7c, 0x1df4d840),
-      new int64.fromInts(0xf2345678, 0x12345678) *
-      new int64.fromInts(0xffff1234, 0x12345678));
-
-  Expect.equals(new int64.fromInt(0), int64.MIN_VALUE * new int64.fromInt(2));
-  Expect.equals(int64.MIN_VALUE, int64.MIN_VALUE * new int64.fromInt(1));
-  Expect.equals(int64.MIN_VALUE, int64.MIN_VALUE * new int64.fromInt(-1));
-
-  Expect.equals(new int64.fromInt(1), new int64.fromInt(5) ~/
-      new int64.fromInt(5));
-  Expect.equals(new int64.fromInt(333), new int64.fromInt(1000) ~/
-      new int64.fromInt(3));
-  Expect.equals(new int64.fromInt(-333), new int64.fromInt(1000) ~/
-      new int64.fromInt(-3));
-  Expect.equals(new int64.fromInt(-333), new int64.fromInt(-1000) ~/
-      new int64.fromInt(3));
-  Expect.equals(new int64.fromInt(333), new int64.fromInt(-1000) ~/
-      new int64.fromInt(-3));
-  Expect.equals(new int64.fromInt(0), new int64.fromInt(3) ~/
-      new int64.fromInt(1000));
-  Expect.equals(new int64.fromInts(0x1003d0, 0xe84f5ae8), new int64.fromInts(
-      0x12345678, 0x12345678) ~/ new int64.fromInts(0x0, 0x123));
-  Expect.equals(new int64.fromInts(0x0, 0x10003), new int64.fromInts(
-      0x12345678, 0x12345678) ~/ new int64.fromInts(0x1234, 0x12345678));
-  Expect.equals(new int64.fromInts(0xffffffff, 0xffff3dfe),
-      new int64.fromInts(0xf2345678, 0x12345678) ~/
-      new int64.fromInts(0x1234, 0x12345678));
-  Expect.equals(new int64.fromInts(0x0, 0xeda), new int64.fromInts(0xf2345678,
-      0x12345678) ~/ new int64.fromInts(0xffff1234, 0x12345678));
-
-  try {
-    new int64.fromInt(1) ~/ new int64.fromInt(0);
-    Expect.fail("Expected an IntegerDivisionByZeroException");
-  } on IntegerDivisionByZeroException catch (e) {
-  }
-
-  Expect.equals(new int64.fromInts(0xc0000000, 0x00000000),
-      int64.MIN_VALUE ~/ new int64.fromInt(2));
-  Expect.equals(int64.MIN_VALUE, int64.MIN_VALUE ~/
-      new int64.fromInt(1));
-  Expect.equals(int64.MIN_VALUE, int64.MIN_VALUE ~/
-      new int64.fromInt(-1));
-}
-
-void testNegate() {
-  Expect.equals(new int64.fromInt(-1), -new int64.fromInt(1));
-  Expect.equals(new int64.fromInt(1), -new int64.fromInt(-1));
-  Expect.equals(int64.MIN_VALUE, -int64.MIN_VALUE);
-}
-
-void testShift() {
-  Expect.equals("-1125899906842624", (int64.MIN_VALUE >> 13).toString());
-  Expect.equals(new int64.fromInts(0xd048d115, 0x9d159c00),
-    new int64.fromInts(0x12341234, 0x45674567) << 10);
-  Expect.equals(new int64.fromInts(0x48d04, 0x8d1159d1),
-    new int64.fromInts(0x12341234, 0x45674567) >> 10);
-  Expect.equals(new int64.fromInts(0x48d04, 0x8d1159d1),
-    new int64.fromInts(0x12341234, 0x45674567).shiftRightUnsigned(10));
-  Expect.equals(new int64.fromInts(0xd048d115, 0x9d159c00),
-    new int64.fromInts(0x92341234, 0x45674567) << 10);
-  Expect.equals(new int64.fromInts(0xffe48d04, 0x8d1159d1),
-    new int64.fromInts(0x92341234, 0x45674567) >> 10);
-  Expect.equals(new int64.fromInt(67108863),
-    new int64.fromInts(0xFFFFFFF, 0xFFFFFFFF) >> 34);
-  Expect.equals(new int64.fromInts(0x248d04, 0x8d1159d1),
-    new int64.fromInts(0x92341234, 0x45674567).shiftRightUnsigned(10));
-
-  for (int n = 0; n <= 66; n++) {
-    Expect.equals(new int64.fromInt(-1), new int64.fromInt(-1) >> n);
-  }
-
-  Expect.equals(new int64.fromInt(-32), new int64.fromInt(-1) << 5);
-  Expect.equals(new int64.fromInt(-1), new int64.fromInt(-1) << 0);
-  Expect.equals(-new int64.fromInts(0x40000000, 0x00000000),
-    (new int64.fromInt(1) << 63) >> 1);
-  Expect.equals(new int64.fromInt(0), (new int64.fromInt(-1) << 32) << 32);
-  Expect.equals(int64.MIN_VALUE, int64.MIN_VALUE << 0);
-  Expect.equals(new int64.fromInt(0), int64.MIN_VALUE << 1);
-  Expect.equals(new int64.fromInts(0xfffffffc, 0x00000000),
-    (-new int64.fromInts(8, 0)) >> 1);
-  Expect.equals(new int64.fromInts(0x7ffffffc, 0x0),
-    (-new int64.fromInts(8, 0)).shiftRightUnsigned(1));
-
-  Expect.equals(new int64.fromInts(0x00723456, 0x789abcde),
-      new int64.fromInts(0x72345678, 0x9abcdef0) >> 8);
-  Expect.equals(new int64.fromInts(0x00007234, 0x56789abc),
-      new int64.fromInts(0x72345678, 0x9abcdef0) >> 16);
-  Expect.equals(new int64.fromInts(0x00000072, 0x3456789a),
-      new int64.fromInts(0x72345678, 0x9abcdef0) >> 24);
-  Expect.equals(new int64.fromInts(0x00000007, 0x23456789),
-      new int64.fromInts(0x72345678, 0x9abcdef0) >> 28);
-  Expect.equals(new int64.fromInts(0x00000000, 0x72345678),
-      new int64.fromInts(0x72345678, 0x9abcdef0) >> 32);
-  Expect.equals(new int64.fromInts(0x00000000, 0x07234567),
-      new int64.fromInts(0x72345678, 0x9abcdef0) >> 36);
-  Expect.equals(new int64.fromInts(0x00000000, 0x00723456),
-      new int64.fromInts(0x72345678, 0x9abcdef0) >> 40);
-  Expect.equals(new int64.fromInts(0x00000000, 0x00072345),
-      new int64.fromInts(0x72345678, 0x9abcde00) >> 44);
-  Expect.equals(new int64.fromInts(0x00000000, 0x00007234),
-      new int64.fromInts(0x72345678, 0x9abcdef0) >> 48);
-
-  Expect.equals(new int64.fromInts(0x00723456, 0x789abcde),
-      new int64.fromInts(0x72345678, 0x9abcdef0).shiftRightUnsigned(8));
-  Expect.equals(new int64.fromInts(0x00007234, 0x56789abc),
-      new int64.fromInts(0x72345678, 0x9abcdef0).shiftRightUnsigned(16));
-  Expect.equals(new int64.fromInts(0x00000072, 0x3456789a),
-      new int64.fromInts(0x72345678, 0x9abcdef0).shiftRightUnsigned(24));
-  Expect.equals(new int64.fromInts(0x00000007, 0x23456789),
-      new int64.fromInts(0x72345678, 0x9abcdef0).shiftRightUnsigned(28));
-  Expect.equals(new int64.fromInts(0x00000000, 0x72345678),
-      new int64.fromInts(0x72345678, 0x9abcdef0).shiftRightUnsigned(32));
-  Expect.equals(new int64.fromInts(0x00000000, 0x07234567),
-      new int64.fromInts(0x72345678, 0x9abcdef0).shiftRightUnsigned(36));
-  Expect.equals(new int64.fromInts(0x00000000, 0x00723456),
-      new int64.fromInts(0x72345678, 0x9abcdef0).shiftRightUnsigned(40));
-  Expect.equals(new int64.fromInts(0x00000000, 0x00072345),
-      new int64.fromInts(0x72345678, 0x9abcde00).shiftRightUnsigned(44));
-  Expect.equals(new int64.fromInts(0x00000000, 0x00007234),
-      new int64.fromInts(0x72345678, 0x9abcdef0).shiftRightUnsigned(48));
-
-  Expect.equals(new int64.fromInts(0xff923456, 0x789abcde),
-      new int64.fromInts(0x92345678, 0x9abcdef0) >> 8);
-  Expect.equals(new int64.fromInts(0xffff9234, 0x56789abc),
-      new int64.fromInts(0x92345678, 0x9abcdef0) >> 16);
-
-  Expect.equals(new int64.fromInts(0xffffff92, 0x3456789a),
-      new int64.fromInts(0x92345678, 0x9abcdef0) >> 24);
-  Expect.equals(new int64.fromInts(0xfffffff9, 0x23456789),
-      new int64.fromInts(0x92345678, 0x9abcdef0) >> 28);
-  Expect.equals(new int64.fromInts(0xffffffff, 0x92345678),
-      new int64.fromInts(0x92345678, 0x9abcdef0) >> 32);
-  Expect.equals(new int64.fromInts(0xffffffff, 0xf9234567),
-      new int64.fromInts(0x92345678, 0x9abcdef0) >> 36);
-  Expect.equals(new int64.fromInts(0xffffffff, 0xff923456),
-      new int64.fromInts(0x92345678, 0x9abcdef0) >> 40);
-  Expect.equals(new int64.fromInts(0xffffffff, 0xfff92345),
-      new int64.fromInts(0x92345678, 0x9abcdef0) >> 44);
-  Expect.equals(new int64.fromInts(0xffffffff, 0xffff9234),
-      new int64.fromInts(0x92345678, 0x9abcdef0) >> 48);
-
-  Expect.equals(new int64.fromInts(0x00923456, 0x789abcde),
-      new int64.fromInts(0x92345678, 0x9abcdef0).shiftRightUnsigned(8));
-  Expect.equals(new int64.fromInts(0x00009234, 0x56789abc),
-      new int64.fromInts(0x92345678, 0x9abcdef0).shiftRightUnsigned(16));
-  Expect.equals(new int64.fromInts(0x00000092, 0x3456789a),
-      new int64.fromInts(0x92345678, 0x9abcdef0).shiftRightUnsigned(24));
-  Expect.equals(new int64.fromInts(0x00000009, 0x23456789),
-      new int64.fromInts(0x92345678, 0x9abcdef0).shiftRightUnsigned(28));
-  Expect.equals(new int64.fromInts(0x00000000, 0x92345678),
-      new int64.fromInts(0x92345678, 0x9abcdef0).shiftRightUnsigned(32));
-  Expect.equals(new int64.fromInts(0x00000000, 0x09234567),
-      new int64.fromInts(0x92345678, 0x9abcdef0).shiftRightUnsigned(36));
-  Expect.equals(new int64.fromInts(0x00000000, 0x00923456),
-      new int64.fromInts(0x92345678, 0x9abcdef0).shiftRightUnsigned(40));
-  Expect.equals(new int64.fromInts(0x00000000, 0x00092345),
-      new int64.fromInts(0x92345678, 0x9abcdef0).shiftRightUnsigned(44));
-  Expect.equals(new int64.fromInts(0x00000000, 0x00009234),
-      new int64.fromInts(0x92345678, 0x9abcdef0).shiftRightUnsigned(48));
-
-  try {
-    new int64.fromInt(17) >> -1;
-    Expect.fail("x >> -1 should throw ArgumentError");
-  } on ArgumentError catch (e) {
-  }
-
-  try {
-    new int64.fromInt(17) << -1;
-    Expect.fail("x >> -1 should throw ArgumentError");
-  } on ArgumentError catch (e) {
-  }
-
-  try {
-    new int64.fromInt(17).shiftRightUnsigned(-1);
-    Expect.fail("x >> -1 should throw ArgumentError");
-  } on ArgumentError catch (e) {
-  }
-
-}
-
-void testToHexString() {
-  int64 deadbeef12341234 = new int64.fromInts(0xDEADBEEF, 0x12341234);
-  Expect.equals("0", int64.ZERO.toHexString());
-  Expect.equals("DEADBEEF12341234", deadbeef12341234.toHexString());
-}
-
-void testToString() {
-  Expect.equals("0", new int64.fromInt(0).toString());
-  Expect.equals("1", new int64.fromInt(1).toString());
-  Expect.equals("-1", new int64.fromInt(-1).toString());
-  Expect.equals("-10", new int64.fromInt(-10).toString());
-  Expect.equals("-9223372036854775808", int64.MIN_VALUE.toString());
-  Expect.equals("9223372036854775807", int64.MAX_VALUE.toString());
-
-  int top = 922337201;
-  int bottom = 967490662;
-  int64 fullnum = (new int64.fromInt(1000000000) * new int64.fromInt(top)) +
-      new int64.fromInt(bottom);
-
-  Expect.equals("922337201967490662", fullnum.toString());
-  Expect.equals("-922337201967490662", (-fullnum).toString());
-
-  Expect.equals("17678A7DEF01234",
-      new int64.fromInts(0x17678A7, 0xDEF01234).toHexString());
-
-  Expect.equals("123456789", new int64.fromInt(123456789).toString());
-  Expect.equals("75BCD15", new int64.fromInt(123456789).toHexString());
-  Expect.equals("223101104124", new int64.fromInt(123456789).toRadixString(5));
-
-  Expect.equals(
-        "-1000000000000000000000000000000000000000000000000000000000000000",
-      int64.MIN_VALUE.toRadixString(2));
-  Expect.equals("-2021110011022210012102010021220101220222",
-      int64.MIN_VALUE.toRadixString(3));
-  Expect.equals("-20000000000000000000000000000000",
-      int64.MIN_VALUE.toRadixString(4));
-  Expect.equals("-1104332401304422434310311213",
-      int64.MIN_VALUE.toRadixString(5));
-  Expect.equals("-1540241003031030222122212", int64.MIN_VALUE.toRadixString(6));
-  Expect.equals("-22341010611245052052301", int64.MIN_VALUE.toRadixString(7));
-  Expect.equals("-1000000000000000000000", int64.MIN_VALUE.toRadixString(8));
-  Expect.equals("-67404283172107811828", int64.MIN_VALUE.toRadixString(9));
-  Expect.equals("-9223372036854775808", int64.MIN_VALUE.toRadixString(10));
-  Expect.equals("-1728002635214590698", int64.MIN_VALUE.toRadixString(11));
-  Expect.equals("-41A792678515120368", int64.MIN_VALUE.toRadixString(12));
-  Expect.equals("-10B269549075433C38", int64.MIN_VALUE.toRadixString(13));
-  Expect.equals("-4340724C6C71DC7A8", int64.MIN_VALUE.toRadixString(14));
-  Expect.equals("-160E2AD3246366808", int64.MIN_VALUE.toRadixString(15));
-  Expect.equals("-8000000000000000", int64.MIN_VALUE.toRadixString(16));
-
-  Expect.equals(
-        "111111111111111111111111111111111111111111111111111111111111111",
-      int64.MAX_VALUE.toRadixString(2));
-  Expect.equals("2021110011022210012102010021220101220221",
-      int64.MAX_VALUE.toRadixString(3));
-  Expect.equals("13333333333333333333333333333333",
-      int64.MAX_VALUE.toRadixString(4));
-  Expect.equals("1104332401304422434310311212",
-      int64.MAX_VALUE.toRadixString(5));
-  Expect.equals("1540241003031030222122211", int64.MAX_VALUE.toRadixString(6));
-  Expect.equals("22341010611245052052300", int64.MAX_VALUE.toRadixString(7));
-  Expect.equals("777777777777777777777", int64.MAX_VALUE.toRadixString(8));
-  Expect.equals("67404283172107811827", int64.MAX_VALUE.toRadixString(9));
-  Expect.equals("9223372036854775807", int64.MAX_VALUE.toRadixString(10));
-  Expect.equals("1728002635214590697", int64.MAX_VALUE.toRadixString(11));
-  Expect.equals("41A792678515120367", int64.MAX_VALUE.toRadixString(12));
-  Expect.equals("10B269549075433C37", int64.MAX_VALUE.toRadixString(13));
-  Expect.equals("4340724C6C71DC7A7", int64.MAX_VALUE.toRadixString(14));
-  Expect.equals("160E2AD3246366807", int64.MAX_VALUE.toRadixString(15));
-  Expect.equals("7FFFFFFFFFFFFFFF", int64.MAX_VALUE.toRadixString(16));
-}