lrn@google.com
bf6e0dab05
Includes supporting classes. R=floitsch@google.com Review URL: https://codereview.chromium.org//211223002 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@34422 260f80e4-7a28-3924-810f-c04153c831b5
89 lines
3.3 KiB
Dart
89 lines
3.3 KiB
Dart
// Copyright (c) 2012, 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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import "package:expect/expect.dart";
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main() {
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/// Test that converting [value] to a string gives [expect].
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/// Also test that `-value` gives `"-"+expect`.
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test(int value, String expect) {
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Expect.equals(expect, value.toString());
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Expect.equals(expect, "$value");
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Expect.equals(expect, (new StringBuffer()..write(value)).toString());
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if (value == 0) return;
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expect = "-$expect";
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value = -value;
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Expect.equals(expect, value.toString());
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Expect.equals(expect, "$value");
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Expect.equals(expect, (new StringBuffer()..write(value)).toString());
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}
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// Very simple tests.
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test(0, "0");
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test(1, "1");
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test(2, "2");
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test(5, "5");
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// Binary special cases.
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// ~2^30.
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test(0x3fffffff, "1073741823");
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test(0x40000000, "1073741824");
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test(0x40000001, "1073741825");
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// ~2^31.
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test(0x7fffffff, "2147483647");
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test(0x80000000, "2147483648");
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test(0x80000001, "2147483649");
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// ~2^32.
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test(0xffffffff, "4294967295");
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test(0x100000000, "4294967296");
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test(0x100000001, "4294967297");
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// ~2^51.
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test(0x7ffffffffffff, "2251799813685247");
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test(0x8000000000000, "2251799813685248");
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test(0x8000000000001, "2251799813685249");
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// ~2^52.
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test(0xfffffffffffff, "4503599627370495");
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test(0x10000000000000, "4503599627370496");
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test(0x10000000000001, "4503599627370497");
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// ~2^53.
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test(0x1fffffffffffff, "9007199254740991");
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test(0x20000000000000, "9007199254740992");
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test(0x20000000000001, "9007199254740993"); /// 01: ok
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// ~2^62.
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test(0x3fffffffffffffff, "4611686018427387903"); /// 01: continued
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test(0x4000000000000000, "4611686018427387904"); /// 01: continued
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test(0x4000000000000001, "4611686018427387905"); /// 01: continued
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// ~2^63.
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test(0x7fffffffffffffff, "9223372036854775807"); /// 01: continued
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test(0x8000000000000000, "9223372036854775808"); /// 01: continued
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test(0x8000000000000001, "9223372036854775809"); /// 01: continued
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// ~2^64.
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test(0xffffffffffffffff, "18446744073709551615"); /// 01: continued
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test(0x10000000000000000, "18446744073709551616"); /// 01: continued
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test(0x10000000000000001, "18446744073709551617"); /// 01: continued
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// Big bignum.
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test(123456789012345678901234567890, /// 01: continued
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"123456789012345678901234567890"); /// 01: continued
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// Decimal special cases.
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int number = 10;
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// Numbers 99..99, 100...00, and 100..01 up to 23 digits.
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for (int i = 1; i < 15; i++) { // Works in dart2js up to 10^15.
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test(number - 1, "9" * i);
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test(number, "1" + "0" * i);
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test(number + 1, "1" + "0" * (i - 1) + "1");
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number *= 10;
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}
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// Fails to represent exactly in dart2js.
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for (int i = 15; i < 22; i++) { /// 01: continued
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test(number - 1, "9" * i); /// 01: continued
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test(number, "1" + "0" * i); /// 01: continued
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test(number + 1, "1" + "0" * (i - 1) + "1"); /// 01: continued
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number *= 10; /// 01: continued
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} /// 01: continued
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}
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