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https://github.com/dart-lang/sdk
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912005267d
Change-Id: I46be49b2effec3e38a3dc44cd45cfe736f77fa78 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/182680 Commit-Queue: Sigmund Cherem <sigmund@google.com> Reviewed-by: Joshua Litt <joshualitt@google.com> Reviewed-by: Nicholas Shahan <nshahan@google.com> Reviewed-by: Stephen Adams <sra@google.com>
149 lines
4.8 KiB
Dart
149 lines
4.8 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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// Test that string escapes work correctly.
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testSingleCharacterEscapes() {
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List/*<String>*/ examples = [
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"\b\f\n\r\t\v",
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'\b\f\n\r\t\v',
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"""\b\f\n\r\t\v""",
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'''\b\f\n\r\t\v''',
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];
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List values = [8, 12, 10, 13, 9, 11];
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for (String s in examples) {
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Expect.equals(6, s.length);
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for (int i = 0; i < 6; i++) {
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Expect.equals(values[i], s.codeUnitAt(i));
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}
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}
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// An escaped quote isn't part of a multiline end quote.
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Expect.equals(r'"', """\"""");
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Expect.equals(r"'", '''\'''');
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Expect.equals(r'" "', """" \"""");
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Expect.equals(r"' '", '''' \'''');
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Expect.equals(r'"" ', """"" """);
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Expect.equals(r"'' ", ''''' ''');
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}
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testXEscapes() {
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var allBytes =
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"\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f"
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"\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f"
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"\x20\x21\x22\x23\x24\x25\x26\x27\x28\x29\x2a\x2b\x2c\x2d\x2e\x2f"
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"\x30\x31\x32\x33\x34\x35\x36\x37\x38\x39\x3a\x3b\x3c\x3d\x3e\x3f"
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"\x40\x41\x42\x43\x44\x45\x46\x47\x48\x49\x4a\x4b\x4c\x4d\x4e\x4f"
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"\x50\x51\x52\x53\x54\x55\x56\x57\x58\x59\x5a\x5b\x5c\x5d\x5e\x5f"
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"\x60\x61\x62\x63\x64\x65\x66\x67\x68\x69\x6a\x6b\x6c\x6d\x6e\x6f"
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"\x70\x71\x72\x73\x74\x75\x76\x77\x78\x79\x7a\x7b\x7c\x7d\x7e\x7f"
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"\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8a\x8b\x8c\x8d\x8e\x8f"
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"\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9a\x9b\x9c\x9d\x9e\x9f"
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"\xa0\xa1\xa2\xa3\xa4\xa5\xa6\xa7\xa8\xa9\xaa\xab\xac\xad\xae\xaf"
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"\xb0\xb1\xb2\xb3\xb4\xb5\xb6\xb7\xb8\xb9\xba\xbb\xbc\xbd\xbe\xbf"
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"\xc0\xc1\xc2\xc3\xc4\xc5\xc6\xc7\xc8\xc9\xca\xcb\xcc\xcd\xce\xcf"
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"\xd0\xd1\xd2\xd3\xd4\xd5\xd6\xd7\xd8\xd9\xda\xdb\xdc\xdd\xde\xdf"
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"\xe0\xe1\xe2\xe3\xe4\xe5\xe6\xe7\xe8\xe9\xea\xeb\xec\xed\xee\xef"
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"\xf0\xf1\xf2\xf3\xf4\xf5\xf6\xf7\xf8\xf9\xfa\xfb\xfc\xfd\xfe\xff";
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Expect.equals(256, allBytes.length);
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for (int i = 0; i < 256; i++) {
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Expect.equals(i, allBytes.codeUnitAt(i));
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}
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}
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testUEscapes() {
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List /*String*/ examples = [
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"\u0000\u0001\u0022\u0027\u005c\u007f\u0080\u00ff"
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"\u0100\u1000\ud7ff\ue000\uffff",
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'\u0000\u0001\u0022\u0027\u005c\u007f\u0080\u00ff'
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'\u0100\u1000\ud7ff\ue000\uffff',
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"""\u0000\u0001\u0022\u0027\u005c\u007f\u0080\u00ff"""
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"""\u0100\u1000\ud7ff\ue000\uffff""",
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'''\u0000\u0001\u0022\u0027\u005c\u007f\u0080\u00ff'''
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'''\u0100\u1000\ud7ff\ue000\uffff'''
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];
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List/*<int>*/ values = [
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0,
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1,
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0x22,
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0x27,
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0x5c,
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0x7f,
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0x80,
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0xff,
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0x100,
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0x1000,
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0xd7ff,
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0xe000,
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0xffff
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];
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for (String s in examples) {
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Expect.equals(values.length, s.length);
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for (int i = 0; i < values.length; i++) {
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Expect.equals(values[i], s.codeUnitAt(i));
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}
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}
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// No characters above 0xffff until Leg supports that.
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var long = "\u{0}\u{00}\u{000}\u{0000}\u{00000}\u{000000}"
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"\u{1}\u{01}\u{001}\u{00001}"
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"\u{ffff}\u{0ffff}\u{00ffff}";
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var longValues = [0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0xffff, 0xffff, 0xffff];
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Expect.equals(longValues.length, long.length);
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for (int i = 0; i < longValues.length; i++) {
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Expect.equals(longValues[i], long.codeUnitAt(i));
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}
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}
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testIdentityEscapes() {
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// All non-control ASCII characters escaped, except those with special
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// meaning: b, f, n, r, t, u, v, and x (replaced by \x00).
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var asciiLiterals =
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"\ \!\"\#\$\%\&\'\(\)\*\+\,\-\.\/\0\1\2\3\4\5\6\7\8\9\:\;\<\=\>"
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"\?\@\A\B\C\D\E\F\G\H\I\J\K\L\M\N\O\P\Q\R\S\T\U\V\W\X\Y\Z\[\\\]"
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"\^\_\`\a\x00\c\d\e\x00\g\h\i\j\k\l\m\x00\o\p\q\x00\s\x00\x00\x00"
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"\w\x00\y\z\{\|\}\~\";
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Expect.equals(128 - 32, asciiLiterals.length);
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for (int i = 32; i < 128; i++) {
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int code = asciiLiterals.codeUnitAt(i - 32);
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if (code != 0) {
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Expect.equals(i, code);
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}
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}
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}
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testQuotes() {
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// The string [ "' ].
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String bothQuotes = ' "' "' ";
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Expect.equals(bothQuotes, " \"' ");
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Expect.equals(bothQuotes, ' "\' ');
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Expect.equals(bothQuotes, """ "' """);
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Expect.equals(bothQuotes, ''' "' ''');
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Expect.equals(bothQuotes, r""" "' """);
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Expect.equals(bothQuotes, r''' "' ''');
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}
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testRawStrings() {
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String raw1 = r'\x00';
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Expect.equals(4, raw1.length);
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Expect.equals(0x5c, raw1.codeUnitAt(0));
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}
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main() {
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// Test \x??.
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testXEscapes();
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// Test \u???? and \u{?+}.
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testUEscapes();
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// Test \b, \f, \n, \r, \t, \v.
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testSingleCharacterEscapes();
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// Test all other single character (identity) escaeps.
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testIdentityEscapes();
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// Test that quotes are handled correctly.
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testQuotes();
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// Test that raw strings are raw.
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testRawStrings();
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}
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