mirror of
https://github.com/dart-lang/sdk
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142 lines
5.7 KiB
Dart
142 lines
5.7 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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import "dart:math" show pow;
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void main() {
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bool checkedMode = false;
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assert((checkedMode = true));
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const String oneByteWhiteSpace = "\x09\x0a\x0b\x0c\x0d\x20"
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"\x85" /// 01: ok
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"\xa0";
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const String whiteSpace = "$oneByteWhiteSpace\u1680\u180e"
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"\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a"
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"\u2028\u2029\u202f\u205f\u3000\ufeff";
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var digits = "0123456789abcdefghijklmnopqrstuvwxyz";
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var zeros = "0" * 64;
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for (int i = 0; i < whiteSpace.length; i++) {
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var ws = whiteSpace[i];
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Expect.equals(0, int.parse("${ws}0${ws}", radix: 2));
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}
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void testParse(int result, String radixString, int radix) {
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var m = "$radixString/$radix->$result";
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Expect.equals(result,
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int.parse(radixString.toLowerCase(), radix: radix), m);
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Expect.equals(result,
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int.parse(radixString.toUpperCase(), radix: radix), m);
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Expect.equals(result, int.parse(" $radixString", radix: radix), m);
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Expect.equals(result, int.parse("$radixString ", radix: radix), m);
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Expect.equals(result, int.parse(" $radixString ", radix: radix), m);
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Expect.equals(result, int.parse("+$radixString", radix: radix), m);
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Expect.equals(result, int.parse(" +$radixString", radix: radix), m);
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Expect.equals(result, int.parse("+$radixString ", radix: radix), m);
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Expect.equals(result, int.parse(" +$radixString ", radix: radix), m);
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Expect.equals(-result, int.parse("-$radixString", radix: radix), m);
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Expect.equals(-result, int.parse(" -$radixString", radix: radix), m);
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Expect.equals(-result, int.parse("-$radixString ", radix: radix), m);
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Expect.equals(-result, int.parse(" -$radixString ", radix: radix), m);
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Expect.equals(result, int.parse(
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"$oneByteWhiteSpace$radixString$oneByteWhiteSpace", radix: radix), m);
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Expect.equals(-result, int.parse(
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"$oneByteWhiteSpace-$radixString$oneByteWhiteSpace", radix: radix), m);
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Expect.equals(result, int.parse(
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"$whiteSpace$radixString$whiteSpace", radix: radix), m);
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Expect.equals(-result, int.parse(
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"$whiteSpace-$radixString$whiteSpace", radix: radix), m);
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Expect.equals(result, int.parse("$zeros$radixString", radix: radix), m);
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Expect.equals(result, int.parse("+$zeros$radixString", radix: radix), m);
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Expect.equals(-result, int.parse("-$zeros$radixString", radix: radix), m);
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}
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for (int r = 2; r <= 36; r++) {
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for (int i = 0; i <= r * r; i++) {
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String radixString = i.toRadixString(r);
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testParse(i, radixString, r);
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}
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}
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for (int i = 2; i <= 36; i++) { /// 02: ok
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// Test with bignums. /// 02: continued
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var digit = digits[i - 1]; /// 02: continued
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testParse(pow(i, 64) - 1, digit * 64, i); /// 02: continued
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testParse(0, zeros, i); /// 02: continued
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} /// 02: continued
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// Allow both upper- and lower-case letters.
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Expect.equals(0xABCD, int.parse("ABCD", radix: 16));
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Expect.equals(0xABCD, int.parse("abcd", radix: 16));
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Expect.equals(15628859, int.parse("09azAZ", radix: 36));
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// Big number.
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Expect.equals(0x12345678123456781234567812345678, /// 02: continued
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int.parse("0x1234567812345678" /// 02: continued
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"1234567812345678")); /// 02: continued
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// Allow whitespace before and after the number.
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Expect.equals(1, int.parse(" 1", radix: 2));
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Expect.equals(1, int.parse("1 ", radix: 2));
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Expect.equals(1, int.parse(" 1 ", radix: 2));
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Expect.equals(1, int.parse("\n1", radix: 2));
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Expect.equals(1, int.parse("1\n", radix: 2));
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Expect.equals(1, int.parse("\n1\n", radix: 2));
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Expect.equals(1, int.parse("+1", radix: 2));
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void testFails(String source, int radix) {
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Expect.throws(() { throw int.parse(source, radix: radix,
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onError: (s) { throw "FAIL"; }); },
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isFail,
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"$source/$radix");
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Expect.equals(-999, int.parse(source, radix: radix, onError: (s) => -999));
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}
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for (int i = 2; i < 36; i++) {
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var char = i.toRadixString(36);
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testFails(char.toLowerCase(), i);
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testFails(char.toUpperCase(), i);
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}
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testFails("", 2);
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testFails("+ 1", 2); // No space between sign and digits.
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testFails("- 1", 2); // No space between sign and digits.
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testFails("0x", null);
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for (int i = 2; i <= 33; i++) {
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// No 0x specially allowed.
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// At radix 34 and above, "x" is a valid digit.
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testFails("0x10", i);
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}
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testBadTypes(var source, var radix) {
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if (!checkedMode) {
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// No promises on what error is thrown if the type doesn't match.
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// Likely either ArgumentError or NoSuchMethodError.
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Expect.throws(() => int.parse(source, radix: radix, onError: (s) => 0));
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return;
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}
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// In checked mode, it's always a TypeError.
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Expect.throws(() => int.parse(source, radix: radix, onError: (s) => 0),
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(e) => e is TypeError || e is CastError);
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}
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testBadTypes(9, 10);
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testBadTypes(true, 10);
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testBadTypes("0", true);
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testBadTypes("0", "10");
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testBadArguments(String source, int radix) {
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// If the types match, it should be an ArgumentError of some sort.
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Expect.throws(() => int.parse(source, radix: radix, onError: (s) => 0),
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(e) => e is ArgumentError);
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}
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testBadArguments("0", -1);
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testBadArguments("0", 0);
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testBadArguments("0", 1);
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testBadArguments("0", 37);
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// See also int_parse_radix_bad_handler_test.dart
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}
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bool isFail(e) => e == "FAIL";
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