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35da19ac07
Change-Id: I0e97add738bc79314a210cf137525b7391467fc2 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/152595 Reviewed-by: Siva Annamalai <asiva@google.com> Commit-Queue: Bob Nystrom <rnystrom@google.com> Auto-Submit: Bob Nystrom <rnystrom@google.com>
109 lines
2.7 KiB
Dart
109 lines
2.7 KiB
Dart
// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// Testing Mints. Note that the tests may not work on 64-bit machines,
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// as Smi's would be used to represent many of the numbers.
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library MediumIntegerTest;
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import "package:expect/expect.dart";
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class MediumIntegerTest {
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static int getMint() {
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return 1234567890123456789;
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}
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static testSmiOverflow() {
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int a = 1073741823;
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int b = 1073741822;
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Expect.equals(2147483645, a + b);
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Expect.equals(1152921501385621506, a * b);
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Expect.equals(-2147483645, -a - b);
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}
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static testMintAdd() {
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// Mint and Smi.
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var a = 1234567890123456789;
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var b = 2;
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Expect.equals(1234567890123456791, a + b);
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Expect.equals(1234567890123456791, b + a);
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a = 9223372036854775807;
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Expect.equals(-9223372036854775808, a + 1);
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// Mint and Mint.
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a = 100000000000000001;
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Expect.equals(200000000000000002, a + a);
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a = 9223372036854775800;
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b = 1000000000000000000;
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Expect.equals(-8223372036854775816, a + b);
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// Mint and double.
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var da = 100000000000.0;
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b = 100000000000;
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Expect.equals(200000000000.0, da + b);
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Expect.equals(200000000000.0, b + da);
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}
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static testMintSub() {
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// Mint and Smi.
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var a = 1234567890123456789;
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var b = 2;
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Expect.equals(1234567890123456787, a - b);
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a = -9223372036854775808;
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Expect.equals(9223372036854775807, a - 1);
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// Mint and Mint.
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a = 1234567890123456789;
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b = 1000000000000000000;
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Expect.equals(234567890123456789, a - b);
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a = -9223372036854775808;
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b = 1000000000000000000;
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Expect.equals(8223372036854775808, a - b);
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}
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static testMintDiv() {
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// Mint and Smi.
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var a = 1234567890123456788;
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var b = 2;
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Expect.equals(617283945061728394.0, a / b);
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}
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static testMintMul() {
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// Mint and Smi.
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var a = 4611686018427387904;
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var b = 10;
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Expect.equals(-9223372036854775808, a * b);
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b = 1000000000000000000;
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Expect.equals(0, a * b);
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}
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static testMintAnd(mint) {
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// Issue 1845.
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final int t = 0;
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var res = mint & (t - 1);
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Expect.equals(mint, res);
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}
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static void testMain() {
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Expect.equals(1234567890123456789, getMint());
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testSmiOverflow();
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testMintAdd();
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testMintSub();
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testMintMul();
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testMintDiv();
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testMintAnd(-1925149952);
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testMintAnd(1925149952);
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testMintAnd(0x100000001);
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var a = 100000000000;
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var b = 100000000001;
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Expect.equals(false, a.hashCode == b.hashCode);
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Expect.equals(true, a.hashCode == (b - 1).hashCode);
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}
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}
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main() {
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for (int i = 0; i < 4000; i++) {
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MediumIntegerTest.testMain();
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}
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}
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