/
strings.test.ts
524 lines (466 loc) · 19.1 KB
/
strings.test.ts
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/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
import * as assert from 'assert';
import * as strings from 'vs/base/common/strings';
suite('Strings', () => {
test('equalsIgnoreCase', () => {
assert(strings.equalsIgnoreCase('', ''));
assert(!strings.equalsIgnoreCase('', '1'));
assert(!strings.equalsIgnoreCase('1', ''));
assert(strings.equalsIgnoreCase('a', 'a'));
assert(strings.equalsIgnoreCase('abc', 'Abc'));
assert(strings.equalsIgnoreCase('abc', 'ABC'));
assert(strings.equalsIgnoreCase('Höhenmeter', 'HÖhenmeter'));
assert(strings.equalsIgnoreCase('ÖL', 'Öl'));
});
test('beginsWithIgnoreCase', () => {
assert(strings.startsWithIgnoreCase('', ''));
assert(!strings.startsWithIgnoreCase('', '1'));
assert(strings.startsWithIgnoreCase('1', ''));
assert(strings.startsWithIgnoreCase('a', 'a'));
assert(strings.startsWithIgnoreCase('abc', 'Abc'));
assert(strings.startsWithIgnoreCase('abc', 'ABC'));
assert(strings.startsWithIgnoreCase('Höhenmeter', 'HÖhenmeter'));
assert(strings.startsWithIgnoreCase('ÖL', 'Öl'));
assert(strings.startsWithIgnoreCase('alles klar', 'a'));
assert(strings.startsWithIgnoreCase('alles klar', 'A'));
assert(strings.startsWithIgnoreCase('alles klar', 'alles k'));
assert(strings.startsWithIgnoreCase('alles klar', 'alles K'));
assert(strings.startsWithIgnoreCase('alles klar', 'ALLES K'));
assert(strings.startsWithIgnoreCase('alles klar', 'alles klar'));
assert(strings.startsWithIgnoreCase('alles klar', 'ALLES KLAR'));
assert(!strings.startsWithIgnoreCase('alles klar', ' ALLES K'));
assert(!strings.startsWithIgnoreCase('alles klar', 'ALLES K '));
assert(!strings.startsWithIgnoreCase('alles klar', 'öALLES K '));
assert(!strings.startsWithIgnoreCase('alles klar', ' '));
assert(!strings.startsWithIgnoreCase('alles klar', 'ö'));
});
test('compareIgnoreCase', () => {
function assertCompareIgnoreCase(a: string, b: string, recurse = true): void {
let actual = strings.compareIgnoreCase(a, b);
actual = actual > 0 ? 1 : actual < 0 ? -1 : actual;
let expected = strings.compare(a.toLowerCase(), b.toLowerCase());
expected = expected > 0 ? 1 : expected < 0 ? -1 : expected;
assert.strictEqual(actual, expected, `${a} <> ${b}`);
if (recurse) {
assertCompareIgnoreCase(b, a, false);
}
}
assertCompareIgnoreCase('', '');
assertCompareIgnoreCase('abc', 'ABC');
assertCompareIgnoreCase('abc', 'ABc');
assertCompareIgnoreCase('abc', 'ABcd');
assertCompareIgnoreCase('abc', 'abcd');
assertCompareIgnoreCase('foo', 'föo');
assertCompareIgnoreCase('Code', 'code');
assertCompareIgnoreCase('Code', 'cöde');
assertCompareIgnoreCase('B', 'a');
assertCompareIgnoreCase('a', 'B');
assertCompareIgnoreCase('b', 'a');
assertCompareIgnoreCase('a', 'b');
assertCompareIgnoreCase('aa', 'ab');
assertCompareIgnoreCase('aa', 'aB');
assertCompareIgnoreCase('aa', 'aA');
assertCompareIgnoreCase('a', 'aa');
assertCompareIgnoreCase('ab', 'aA');
assertCompareIgnoreCase('O', '/');
});
test('compareIgnoreCase (substring)', () => {
function assertCompareIgnoreCase(a: string, b: string, aStart: number, aEnd: number, bStart: number, bEnd: number, recurse = true): void {
let actual = strings.compareSubstringIgnoreCase(a, b, aStart, aEnd, bStart, bEnd);
actual = actual > 0 ? 1 : actual < 0 ? -1 : actual;
let expected = strings.compare(a.toLowerCase().substring(aStart, aEnd), b.toLowerCase().substring(bStart, bEnd));
expected = expected > 0 ? 1 : expected < 0 ? -1 : expected;
assert.strictEqual(actual, expected, `${a} <> ${b}`);
if (recurse) {
assertCompareIgnoreCase(b, a, bStart, bEnd, aStart, aEnd, false);
}
}
assertCompareIgnoreCase('', '', 0, 0, 0, 0);
assertCompareIgnoreCase('abc', 'ABC', 0, 1, 0, 1);
assertCompareIgnoreCase('abc', 'Aabc', 0, 3, 1, 4);
assertCompareIgnoreCase('abcABc', 'ABcd', 3, 6, 0, 4);
});
test('format', () => {
assert.strictEqual(strings.format('Foo Bar'), 'Foo Bar');
assert.strictEqual(strings.format('Foo {0} Bar'), 'Foo {0} Bar');
assert.strictEqual(strings.format('Foo {0} Bar', 'yes'), 'Foo yes Bar');
assert.strictEqual(strings.format('Foo {0} Bar {0}', 'yes'), 'Foo yes Bar yes');
assert.strictEqual(strings.format('Foo {0} Bar {1}{2}', 'yes'), 'Foo yes Bar {1}{2}');
assert.strictEqual(strings.format('Foo {0} Bar {1}{2}', 'yes', undefined), 'Foo yes Bar undefined{2}');
assert.strictEqual(strings.format('Foo {0} Bar {1}{2}', 'yes', 5, false), 'Foo yes Bar 5false');
assert.strictEqual(strings.format('Foo {0} Bar. {1}', '(foo)', '.test'), 'Foo (foo) Bar. .test');
});
test('format2', () => {
assert.strictEqual(strings.format2('Foo Bar', {}), 'Foo Bar');
assert.strictEqual(strings.format2('Foo {oops} Bar', {}), 'Foo {oops} Bar');
assert.strictEqual(strings.format2('Foo {foo} Bar', { foo: 'bar' }), 'Foo bar Bar');
assert.strictEqual(strings.format2('Foo {foo} Bar {foo}', { foo: 'bar' }), 'Foo bar Bar bar');
assert.strictEqual(strings.format2('Foo {foo} Bar {bar}{boo}', { foo: 'bar' }), 'Foo bar Bar {bar}{boo}');
assert.strictEqual(strings.format2('Foo {foo} Bar {bar}{boo}', { foo: 'bar', bar: 'undefined' }), 'Foo bar Bar undefined{boo}');
assert.strictEqual(strings.format2('Foo {foo} Bar {bar}{boo}', { foo: 'bar', bar: '5', boo: false }), 'Foo bar Bar 5false');
assert.strictEqual(strings.format2('Foo {foo} Bar. {bar}', { foo: '(foo)', bar: '.test' }), 'Foo (foo) Bar. .test');
});
test('lcut', () => {
assert.strictEqual(strings.lcut('foo bar', 0), '');
assert.strictEqual(strings.lcut('foo bar', 1), 'bar');
assert.strictEqual(strings.lcut('foo bar', 3), 'bar');
assert.strictEqual(strings.lcut('foo bar', 4), 'bar'); // Leading whitespace trimmed
assert.strictEqual(strings.lcut('foo bar', 5), 'foo bar');
assert.strictEqual(strings.lcut('test string 0.1.2.3', 3), '2.3');
assert.strictEqual(strings.lcut('', 10), '');
assert.strictEqual(strings.lcut('a', 10), 'a');
});
test('escape', () => {
assert.strictEqual(strings.escape(''), '');
assert.strictEqual(strings.escape('foo'), 'foo');
assert.strictEqual(strings.escape('foo bar'), 'foo bar');
assert.strictEqual(strings.escape('<foo bar>'), '<foo bar>');
assert.strictEqual(strings.escape('<foo>Hello</foo>'), '<foo>Hello</foo>');
});
test('ltrim', () => {
assert.strictEqual(strings.ltrim('foo', 'f'), 'oo');
assert.strictEqual(strings.ltrim('foo', 'o'), 'foo');
assert.strictEqual(strings.ltrim('http://www.test.de', 'http://'), 'www.test.de');
assert.strictEqual(strings.ltrim('/foo/', '/'), 'foo/');
assert.strictEqual(strings.ltrim('//foo/', '/'), 'foo/');
assert.strictEqual(strings.ltrim('/', ''), '/');
assert.strictEqual(strings.ltrim('/', '/'), '');
assert.strictEqual(strings.ltrim('///', '/'), '');
assert.strictEqual(strings.ltrim('', ''), '');
assert.strictEqual(strings.ltrim('', '/'), '');
});
test('rtrim', () => {
assert.strictEqual(strings.rtrim('foo', 'o'), 'f');
assert.strictEqual(strings.rtrim('foo', 'f'), 'foo');
assert.strictEqual(strings.rtrim('http://www.test.de', '.de'), 'http://www.test');
assert.strictEqual(strings.rtrim('/foo/', '/'), '/foo');
assert.strictEqual(strings.rtrim('/foo//', '/'), '/foo');
assert.strictEqual(strings.rtrim('/', ''), '/');
assert.strictEqual(strings.rtrim('/', '/'), '');
assert.strictEqual(strings.rtrim('///', '/'), '');
assert.strictEqual(strings.rtrim('', ''), '');
assert.strictEqual(strings.rtrim('', '/'), '');
});
test('trim', () => {
assert.strictEqual(strings.trim(' foo '), 'foo');
assert.strictEqual(strings.trim(' foo'), 'foo');
assert.strictEqual(strings.trim('bar '), 'bar');
assert.strictEqual(strings.trim(' '), '');
assert.strictEqual(strings.trim('foo bar', 'bar'), 'foo ');
});
test('trimWhitespace', () => {
assert.strictEqual(' foo '.trim(), 'foo');
assert.strictEqual(' foo '.trim(), 'foo');
assert.strictEqual(' foo'.trim(), 'foo');
assert.strictEqual('bar '.trim(), 'bar');
assert.strictEqual(' '.trim(), '');
assert.strictEqual(' '.trim(), '');
});
test('lastNonWhitespaceIndex', () => {
assert.strictEqual(strings.lastNonWhitespaceIndex('abc \t \t '), 2);
assert.strictEqual(strings.lastNonWhitespaceIndex('abc'), 2);
assert.strictEqual(strings.lastNonWhitespaceIndex('abc\t'), 2);
assert.strictEqual(strings.lastNonWhitespaceIndex('abc '), 2);
assert.strictEqual(strings.lastNonWhitespaceIndex('abc \t \t '), 2);
assert.strictEqual(strings.lastNonWhitespaceIndex('abc \t \t abc \t \t '), 11);
assert.strictEqual(strings.lastNonWhitespaceIndex('abc \t \t abc \t \t ', 8), 2);
assert.strictEqual(strings.lastNonWhitespaceIndex(' \t \t '), -1);
});
test('containsRTL', () => {
assert.strictEqual(strings.containsRTL('a'), false);
assert.strictEqual(strings.containsRTL(''), false);
assert.strictEqual(strings.containsRTL(strings.UTF8_BOM_CHARACTER + 'a'), false);
assert.strictEqual(strings.containsRTL('hello world!'), false);
assert.strictEqual(strings.containsRTL('a📚📚b'), false);
assert.strictEqual(strings.containsRTL('هناك حقيقة مثبتة منذ زمن طويل'), true);
assert.strictEqual(strings.containsRTL('זוהי עובדה מבוססת שדעתו'), true);
});
test('issue #115221: isEmojiImprecise misses ⭐', () => {
const codePoint = strings.getNextCodePoint('⭐', '⭐'.length, 0);
assert.strictEqual(strings.isEmojiImprecise(codePoint), true);
});
test('isBasicASCII', () => {
function assertIsBasicASCII(str: string, expected: boolean): void {
assert.strictEqual(strings.isBasicASCII(str), expected, str + ` (${str.charCodeAt(0)})`);
}
assertIsBasicASCII('abcdefghijklmnopqrstuvwxyz', true);
assertIsBasicASCII('ABCDEFGHIJKLMNOPQRSTUVWXYZ', true);
assertIsBasicASCII('1234567890', true);
assertIsBasicASCII('`~!@#$%^&*()-_=+[{]}\\|;:\'",<.>/?', true);
assertIsBasicASCII(' ', true);
assertIsBasicASCII('\t', true);
assertIsBasicASCII('\n', true);
assertIsBasicASCII('\r', true);
let ALL = '\r\t\n';
for (let i = 32; i < 127; i++) {
ALL += String.fromCharCode(i);
}
assertIsBasicASCII(ALL, true);
assertIsBasicASCII(String.fromCharCode(31), false);
assertIsBasicASCII(String.fromCharCode(127), false);
assertIsBasicASCII('ü', false);
assertIsBasicASCII('a📚📚b', false);
});
test('createRegExp', () => {
// Empty
assert.throws(() => strings.createRegExp('', false));
// Escapes appropriately
assert.strictEqual(strings.createRegExp('abc', false).source, 'abc');
assert.strictEqual(strings.createRegExp('([^ ,.]*)', false).source, '\\(\\[\\^ ,\\.\\]\\*\\)');
assert.strictEqual(strings.createRegExp('([^ ,.]*)', true).source, '([^ ,.]*)');
// Whole word
assert.strictEqual(strings.createRegExp('abc', false, { wholeWord: true }).source, '\\babc\\b');
assert.strictEqual(strings.createRegExp('abc', true, { wholeWord: true }).source, '\\babc\\b');
assert.strictEqual(strings.createRegExp(' abc', true, { wholeWord: true }).source, ' abc\\b');
assert.strictEqual(strings.createRegExp('abc ', true, { wholeWord: true }).source, '\\babc ');
assert.strictEqual(strings.createRegExp(' abc ', true, { wholeWord: true }).source, ' abc ');
const regExpWithoutFlags = strings.createRegExp('abc', true);
assert(!regExpWithoutFlags.global);
assert(regExpWithoutFlags.ignoreCase);
assert(!regExpWithoutFlags.multiline);
const regExpWithFlags = strings.createRegExp('abc', true, { global: true, matchCase: true, multiline: true });
assert(regExpWithFlags.global);
assert(!regExpWithFlags.ignoreCase);
assert(regExpWithFlags.multiline);
});
test('regExpContainsBackreference', () => {
assert(strings.regExpContainsBackreference('foo \\5 bar'));
assert(strings.regExpContainsBackreference('\\2'));
assert(strings.regExpContainsBackreference('(\\d)(\\n)(\\1)'));
assert(strings.regExpContainsBackreference('(A).*?\\1'));
assert(strings.regExpContainsBackreference('\\\\\\1'));
assert(strings.regExpContainsBackreference('foo \\\\\\1'));
assert(!strings.regExpContainsBackreference(''));
assert(!strings.regExpContainsBackreference('\\\\1'));
assert(!strings.regExpContainsBackreference('foo \\\\1'));
assert(!strings.regExpContainsBackreference('(A).*?\\\\1'));
assert(!strings.regExpContainsBackreference('foo \\d1 bar'));
assert(!strings.regExpContainsBackreference('123'));
});
test('getLeadingWhitespace', () => {
assert.strictEqual(strings.getLeadingWhitespace(' foo'), ' ');
assert.strictEqual(strings.getLeadingWhitespace(' foo', 2), '');
assert.strictEqual(strings.getLeadingWhitespace(' foo', 1, 1), '');
assert.strictEqual(strings.getLeadingWhitespace(' foo', 0, 1), ' ');
assert.strictEqual(strings.getLeadingWhitespace(' '), ' ');
assert.strictEqual(strings.getLeadingWhitespace(' ', 1), ' ');
assert.strictEqual(strings.getLeadingWhitespace(' ', 0, 1), ' ');
assert.strictEqual(strings.getLeadingWhitespace('\t\tfunction foo(){', 0, 1), '\t');
assert.strictEqual(strings.getLeadingWhitespace('\t\tfunction foo(){', 0, 2), '\t\t');
});
test('fuzzyContains', () => {
assert.ok(!strings.fuzzyContains((undefined)!, null!));
assert.ok(strings.fuzzyContains('hello world', 'h'));
assert.ok(!strings.fuzzyContains('hello world', 'q'));
assert.ok(strings.fuzzyContains('hello world', 'hw'));
assert.ok(strings.fuzzyContains('hello world', 'horl'));
assert.ok(strings.fuzzyContains('hello world', 'd'));
assert.ok(!strings.fuzzyContains('hello world', 'wh'));
assert.ok(!strings.fuzzyContains('d', 'dd'));
});
test('startsWithUTF8BOM', () => {
assert(strings.startsWithUTF8BOM(strings.UTF8_BOM_CHARACTER));
assert(strings.startsWithUTF8BOM(strings.UTF8_BOM_CHARACTER + 'a'));
assert(strings.startsWithUTF8BOM(strings.UTF8_BOM_CHARACTER + 'aaaaaaaaaa'));
assert(!strings.startsWithUTF8BOM(' ' + strings.UTF8_BOM_CHARACTER));
assert(!strings.startsWithUTF8BOM('foo'));
assert(!strings.startsWithUTF8BOM(''));
});
test('stripUTF8BOM', () => {
assert.strictEqual(strings.stripUTF8BOM(strings.UTF8_BOM_CHARACTER), '');
assert.strictEqual(strings.stripUTF8BOM(strings.UTF8_BOM_CHARACTER + 'foobar'), 'foobar');
assert.strictEqual(strings.stripUTF8BOM('foobar' + strings.UTF8_BOM_CHARACTER), 'foobar' + strings.UTF8_BOM_CHARACTER);
assert.strictEqual(strings.stripUTF8BOM('abc'), 'abc');
assert.strictEqual(strings.stripUTF8BOM(''), '');
});
test('containsUppercaseCharacter', () => {
[
[null, false],
['', false],
['foo', false],
['föö', false],
['ناك', false],
['מבוססת', false],
['😀', false],
['(#@()*&%()@*#&09827340982374}{:">?></\'\\~`', false],
['Foo', true],
['FOO', true],
['FöÖ', true],
['FöÖ', true],
['\\Foo', true],
].forEach(([str, result]) => {
assert.strictEqual(strings.containsUppercaseCharacter(<string>str), result, `Wrong result for ${str}`);
});
});
test('containsUppercaseCharacter (ignoreEscapedChars)', () => {
[
['\\Woo', false],
['f\\S\\S', false],
['foo', false],
['Foo', true],
].forEach(([str, result]) => {
assert.strictEqual(strings.containsUppercaseCharacter(<string>str, true), result, `Wrong result for ${str}`);
});
});
test('uppercaseFirstLetter', () => {
[
['', ''],
['foo', 'Foo'],
['f', 'F'],
['123', '123'],
['.a', '.a'],
].forEach(([inStr, result]) => {
assert.strictEqual(strings.uppercaseFirstLetter(inStr), result, `Wrong result for ${inStr}`);
});
});
test('getNLines', () => {
assert.strictEqual(strings.getNLines('', 5), '');
assert.strictEqual(strings.getNLines('foo', 5), 'foo');
assert.strictEqual(strings.getNLines('foo\nbar', 5), 'foo\nbar');
assert.strictEqual(strings.getNLines('foo\nbar', 2), 'foo\nbar');
assert.strictEqual(strings.getNLines('foo\nbar', 1), 'foo');
assert.strictEqual(strings.getNLines('foo\nbar'), 'foo');
assert.strictEqual(strings.getNLines('foo\nbar\nsomething', 2), 'foo\nbar');
assert.strictEqual(strings.getNLines('foo', 0), '');
});
test('getGraphemeBreakType', () => {
assert.strictEqual(strings.getGraphemeBreakType(0xBC1), strings.GraphemeBreakType.SpacingMark);
});
test('truncate', () => {
assert.strictEqual('hello world', strings.truncate('hello world', 100));
assert.strictEqual('hello…', strings.truncate('hello world', 5));
});
test('replaceAsync', async () => {
let i = 0;
assert.strictEqual(await strings.replaceAsync('abcabcabcabc', /b(.)/g, async (match, after) => {
assert.strictEqual(match, 'bc');
assert.strictEqual(after, 'c');
return `${i++}${after}`;
}), 'a0ca1ca2ca3c');
});
test('removeAnsiEscapeCodes', () => {
const CSI = '\x1b\[';
const sequences = [
// Base cases from https://invisible-island.net/xterm/ctlseqs/ctlseqs.html#h3-Functions-using-CSI-_-ordered-by-the-final-character_s_
`${CSI}42@`,
`${CSI}42 @`,
`${CSI}42A`,
`${CSI}42 A`,
`${CSI}42B`,
`${CSI}42C`,
`${CSI}42D`,
`${CSI}42E`,
`${CSI}42F`,
`${CSI}42G`,
`${CSI}42;42H`,
`${CSI}42I`,
`${CSI}42J`,
`${CSI}?42J`,
`${CSI}42K`,
`${CSI}?42K`,
`${CSI}42L`,
`${CSI}42M`,
`${CSI}42P`,
`${CSI}#P`,
`${CSI}3#P`,
`${CSI}#Q`,
`${CSI}3#Q`,
`${CSI}#R`,
`${CSI}42S`,
`${CSI}?1;2;3S`,
`${CSI}42T`,
`${CSI}42;42;42;42;42T`,
`${CSI}>3T`,
`${CSI}42X`,
`${CSI}42Z`,
`${CSI}42^`,
`${CSI}42\``,
`${CSI}42a`,
`${CSI}42b`,
`${CSI}42c`,
`${CSI}=42c`,
`${CSI}>42c`,
`${CSI}42d`,
`${CSI}42e`,
`${CSI}42;42f`,
`${CSI}42g`,
`${CSI}3h`,
`${CSI}?3h`,
`${CSI}42i`,
`${CSI}?42i`,
`${CSI}3l`,
`${CSI}?3l`,
`${CSI}3m`,
`${CSI}>0;0m`,
`${CSI}>0m`,
`${CSI}?0m`,
`${CSI}42n`,
`${CSI}>42n`,
`${CSI}?42n`,
`${CSI}>42p`,
`${CSI}!p`,
`${CSI}0;0"p`,
`${CSI}42$p`,
`${CSI}?42$p`,
`${CSI}#p`,
`${CSI}3#p`,
`${CSI}>42q`,
`${CSI}42q`,
`${CSI}42 q`,
`${CSI}42"q`,
`${CSI}#q`,
`${CSI}42;42r`,
`${CSI}?3r`,
`${CSI}0;0;0;0;3$r`,
`${CSI}s`,
`${CSI}0;0s`,
`${CSI}>42s`,
`${CSI}?3s`,
`${CSI}42;42;42t`,
`${CSI}>3t`,
`${CSI}42 t`,
`${CSI}0;0;0;0;3$t`,
`${CSI}u`,
`${CSI}42 u`,
`${CSI}0;0;0;0;0;0;0;0$v`,
`${CSI}42$w`,
`${CSI}0;0;0;0'w`,
`${CSI}42x`,
`${CSI}42*x`,
`${CSI}0;0;0;0;0$x`,
`${CSI}42#y`,
`${CSI}0;0;0;0;0;0*y`,
`${CSI}42;0'z`,
`${CSI}0;1;2;4$z`,
`${CSI}3'{`,
`${CSI}#{`,
`${CSI}3#{`,
`${CSI}0;0;0;0\${`,
`${CSI}0;0;0;0#|`,
`${CSI}42$|`,
`${CSI}42'|`,
`${CSI}42*|`,
`${CSI}#}`,
`${CSI}42'}`,
`${CSI}42$}`,
`${CSI}42'~`,
`${CSI}42$~`,
// Common SGR cases:
`${CSI}1;31m`, // multiple attrs
`${CSI}105m`, // bright background
`${CSI}48:5:128m`, // 256 indexed color
`${CSI}48;5;128m`, // 256 indexed color alt
`${CSI}38:2:0:255:255:255m`, // truecolor
`${CSI}38;2;255;255;255m`, // truecolor alt
// Custom sequences:
'\x1b]633;SetMark;\x07',
'\x1b]633;P;Cwd=/foo\x07',
];
for (const sequence of sequences) {
assert.strictEqual(strings.removeAnsiEscapeCodes(`hello${sequence}world`), 'helloworld', `expect to remove ${JSON.stringify(sequence)}`);
}
});
});