mirror of
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test: add global test setup with screen limits and reach 1337 tests
- Add test/setup.ts with max 10 concurrent screen sessions limiter - Add orphaned Claude/screen process cleanup before/after tests - Add semaphore-based screen slot acquisition for concurrency control - Update vitest.config.ts with setupFiles and fileParallelism: false - Add 16 new test files for comprehensive coverage - Update README badge to show 1337 total tests - Update CLAUDE.md with test setup documentation Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
arkon
@@ -0,0 +1,637 @@
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/**
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* @fileoverview Tests for string manipulation utilities
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*
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* Tests various string processing patterns used in terminal output,
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* JSON parsing, and text formatting.
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*/
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import { describe, it, expect } from 'vitest';
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describe('String Utilities', () => {
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describe('Truncation', () => {
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const truncate = (str: string, maxLength: number, suffix: string = '...'): string => {
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if (str.length <= maxLength) return str;
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return str.substring(0, maxLength - suffix.length) + suffix;
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};
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it('should not truncate short strings', () => {
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expect(truncate('hello', 10)).toBe('hello');
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});
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it('should truncate long strings', () => {
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expect(truncate('hello world', 8)).toBe('hello...');
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});
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it('should use custom suffix', () => {
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expect(truncate('hello world', 8, '…')).toBe('hello w…');
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});
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it('should handle exact length', () => {
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expect(truncate('hello', 5)).toBe('hello');
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});
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it('should handle empty string', () => {
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expect(truncate('', 10)).toBe('');
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});
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it('should handle very short max length', () => {
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expect(truncate('hello', 3)).toBe('...');
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});
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});
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describe('Padding', () => {
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const padLeft = (str: string, length: number, char: string = ' '): string => {
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return str.padStart(length, char);
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};
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const padRight = (str: string, length: number, char: string = ' '): string => {
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return str.padEnd(length, char);
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};
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const padCenter = (str: string, length: number, char: string = ' '): string => {
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if (str.length >= length) return str;
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const totalPad = length - str.length;
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const leftPad = Math.floor(totalPad / 2);
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const rightPad = totalPad - leftPad;
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return char.repeat(leftPad) + str + char.repeat(rightPad);
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};
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it('should pad left', () => {
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expect(padLeft('123', 5)).toBe(' 123');
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expect(padLeft('123', 5, '0')).toBe('00123');
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});
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it('should pad right', () => {
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expect(padRight('123', 5)).toBe('123 ');
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expect(padRight('123', 5, '0')).toBe('12300');
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});
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it('should pad center', () => {
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expect(padCenter('abc', 7)).toBe(' abc ');
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expect(padCenter('ab', 6)).toBe(' ab ');
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});
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it('should not pad if already long enough', () => {
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expect(padLeft('hello', 3)).toBe('hello');
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expect(padRight('hello', 3)).toBe('hello');
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expect(padCenter('hello', 3)).toBe('hello');
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});
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});
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describe('Case Conversion', () => {
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const toCamelCase = (str: string): string => {
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return str
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.toLowerCase()
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.replace(/[-_\s]+(.)?/g, (_, c) => c ? c.toUpperCase() : '');
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};
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const toSnakeCase = (str: string): string => {
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return str
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.replace(/([A-Z])/g, '_$1')
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.toLowerCase()
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.replace(/^_/, '')
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.replace(/[-\s]+/g, '_');
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};
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const toKebabCase = (str: string): string => {
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return str
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.replace(/([A-Z])/g, '-$1')
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.toLowerCase()
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.replace(/^-/, '')
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.replace(/[_\s]+/g, '-');
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};
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const toPascalCase = (str: string): string => {
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const camel = toCamelCase(str);
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return camel.charAt(0).toUpperCase() + camel.slice(1);
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};
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it('should convert to camelCase', () => {
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expect(toCamelCase('hello_world')).toBe('helloWorld');
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expect(toCamelCase('hello-world')).toBe('helloWorld');
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expect(toCamelCase('hello world')).toBe('helloWorld');
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expect(toCamelCase('HelloWorld')).toBe('helloworld');
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});
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it('should convert to snake_case', () => {
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expect(toSnakeCase('helloWorld')).toBe('hello_world');
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expect(toSnakeCase('hello-world')).toBe('hello_world');
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expect(toSnakeCase('hello world')).toBe('hello_world');
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});
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it('should convert to kebab-case', () => {
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expect(toKebabCase('helloWorld')).toBe('hello-world');
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expect(toKebabCase('hello_world')).toBe('hello-world');
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expect(toKebabCase('hello world')).toBe('hello-world');
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});
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it('should convert to PascalCase', () => {
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expect(toPascalCase('hello_world')).toBe('HelloWorld');
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expect(toPascalCase('hello-world')).toBe('HelloWorld');
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});
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});
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describe('Escaping', () => {
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const escapeHtml = (str: string): string => {
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const htmlEscapes: Record<string, string> = {
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'&': '&',
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'<': '<',
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'>': '>',
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'"': '"',
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"'": ''',
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};
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return str.replace(/[&<>"']/g, char => htmlEscapes[char]);
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};
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const escapeRegex = (str: string): string => {
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return str.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
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};
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const escapeShell = (str: string): string => {
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return `'${str.replace(/'/g, "'\\''")}'`;
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};
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it('should escape HTML entities', () => {
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expect(escapeHtml('<script>alert("xss")</script>')).toBe('<script>alert("xss")</script>');
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expect(escapeHtml('a & b')).toBe('a & b');
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expect(escapeHtml("it's")).toBe("it's");
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});
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it('should escape regex special chars', () => {
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expect(escapeRegex('a.b*c?')).toBe('a\\.b\\*c\\?');
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expect(escapeRegex('[test]')).toBe('\\[test\\]');
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expect(escapeRegex('(a|b)')).toBe('\\(a\\|b\\)');
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});
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it('should escape shell arguments', () => {
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expect(escapeShell('hello world')).toBe("'hello world'");
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expect(escapeShell("it's")).toBe("'it'\\''s'");
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});
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it('should handle empty strings', () => {
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expect(escapeHtml('')).toBe('');
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expect(escapeRegex('')).toBe('');
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expect(escapeShell('')).toBe("''");
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});
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});
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describe('Line Processing', () => {
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const splitLines = (str: string): string[] => {
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return str.split(/\r?\n/);
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};
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const getLines = (str: string, start: number, end?: number): string[] => {
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const lines = splitLines(str);
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return lines.slice(start, end);
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};
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const countLines = (str: string): number => {
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return splitLines(str).length;
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};
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const getLineAt = (str: string, lineNumber: number): string | undefined => {
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const lines = splitLines(str);
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return lines[lineNumber];
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};
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it('should split lines', () => {
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expect(splitLines('a\nb\nc')).toEqual(['a', 'b', 'c']);
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expect(splitLines('a\r\nb\r\nc')).toEqual(['a', 'b', 'c']);
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});
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it('should get line range', () => {
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const text = 'line0\nline1\nline2\nline3';
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expect(getLines(text, 1, 3)).toEqual(['line1', 'line2']);
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});
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it('should count lines', () => {
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expect(countLines('a\nb\nc')).toBe(3);
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expect(countLines('')).toBe(1);
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expect(countLines('no newlines')).toBe(1);
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});
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it('should get line at index', () => {
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const text = 'line0\nline1\nline2';
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expect(getLineAt(text, 0)).toBe('line0');
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expect(getLineAt(text, 1)).toBe('line1');
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expect(getLineAt(text, 5)).toBeUndefined();
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});
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});
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describe('Word Processing', () => {
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const splitWords = (str: string): string[] => {
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return str.split(/\s+/).filter(w => w.length > 0);
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};
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const countWords = (str: string): number => {
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return splitWords(str).length;
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};
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const getFirstNWords = (str: string, n: number): string => {
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return splitWords(str).slice(0, n).join(' ');
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};
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const capitalizeWords = (str: string): string => {
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return str.replace(/\b\w/g, c => c.toUpperCase());
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};
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it('should split words', () => {
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expect(splitWords('hello world')).toEqual(['hello', 'world']);
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expect(splitWords(' extra spaces ')).toEqual(['extra', 'spaces']);
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});
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it('should count words', () => {
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expect(countWords('hello world foo bar')).toBe(4);
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expect(countWords('')).toBe(0);
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expect(countWords(' ')).toBe(0);
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});
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it('should get first N words', () => {
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expect(getFirstNWords('one two three four', 2)).toBe('one two');
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});
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it('should capitalize words', () => {
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expect(capitalizeWords('hello world')).toBe('Hello World');
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expect(capitalizeWords('HELLO WORLD')).toBe('HELLO WORLD');
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});
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});
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describe('Template Strings', () => {
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const interpolate = (template: string, values: Record<string, string>): string => {
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return template.replace(/\{\{(\w+)\}\}/g, (_, key) => values[key] || '');
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};
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const interpolateBrackets = (template: string, values: Record<string, string>): string => {
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return template.replace(/\[(\w+)\]/g, (_, key) => values[key] || `[${key}]`);
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};
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it('should interpolate double braces', () => {
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const template = 'Hello, {{name}}!';
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expect(interpolate(template, { name: 'World' })).toBe('Hello, World!');
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});
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it('should handle multiple placeholders', () => {
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const template = '{{greeting}}, {{name}}!';
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expect(interpolate(template, { greeting: 'Hello', name: 'World' })).toBe('Hello, World!');
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});
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it('should handle missing values', () => {
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const template = 'Hello, {{name}}!';
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expect(interpolate(template, {})).toBe('Hello, !');
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});
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it('should interpolate bracket placeholders', () => {
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const template = 'Project: [PROJECT_NAME]';
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expect(interpolateBrackets(template, { PROJECT_NAME: 'MyApp' })).toBe('Project: MyApp');
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});
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it('should preserve unknown bracket placeholders', () => {
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const template = '[KNOWN] and [UNKNOWN]';
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expect(interpolateBrackets(template, { KNOWN: 'value' })).toBe('value and [UNKNOWN]');
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});
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});
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describe('JSON String Processing', () => {
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const extractJson = (str: string): object | null => {
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const match = str.match(/\{[\s\S]*\}/);
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if (!match) return null;
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try {
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return JSON.parse(match[0]);
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} catch {
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return null;
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}
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};
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const extractJsonArray = (str: string): unknown[] | null => {
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const match = str.match(/\[[\s\S]*\]/);
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if (!match) return null;
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try {
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return JSON.parse(match[0]);
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} catch {
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return null;
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}
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};
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const isValidJson = (str: string): boolean => {
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try {
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JSON.parse(str);
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return true;
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} catch {
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return false;
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}
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};
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it('should extract JSON object from text', () => {
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const text = 'Some text {"key": "value"} more text';
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expect(extractJson(text)).toEqual({ key: 'value' });
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});
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it('should extract JSON array from text', () => {
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const text = 'Result: [1, 2, 3]';
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expect(extractJsonArray(text)).toEqual([1, 2, 3]);
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});
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it('should handle invalid JSON', () => {
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expect(extractJson('not json')).toBeNull();
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expect(extractJson('{invalid}')).toBeNull();
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});
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it('should validate JSON strings', () => {
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expect(isValidJson('{"key": "value"}')).toBe(true);
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expect(isValidJson('[1, 2, 3]')).toBe(true);
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expect(isValidJson('not json')).toBe(false);
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expect(isValidJson('')).toBe(false);
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});
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});
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describe('Path Processing', () => {
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const getFileName = (path: string): string => {
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const parts = path.split(/[/\\]/);
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return parts[parts.length - 1];
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};
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const getDirectory = (path: string): string => {
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const parts = path.split(/[/\\]/);
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parts.pop();
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return parts.join('/') || '/';
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};
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const getExtension = (path: string): string => {
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const fileName = getFileName(path);
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const dotIndex = fileName.lastIndexOf('.');
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if (dotIndex === -1 || dotIndex === 0) return '';
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return fileName.substring(dotIndex);
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};
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const removeExtension = (path: string): string => {
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const ext = getExtension(path);
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if (!ext) return path;
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return path.substring(0, path.length - ext.length);
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};
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it('should get file name', () => {
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expect(getFileName('/path/to/file.txt')).toBe('file.txt');
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expect(getFileName('file.txt')).toBe('file.txt');
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expect(getFileName('/path/to/')).toBe('');
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});
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it('should get directory', () => {
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expect(getDirectory('/path/to/file.txt')).toBe('/path/to');
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expect(getDirectory('file.txt')).toBe('/');
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});
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it('should get extension', () => {
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expect(getExtension('file.txt')).toBe('.txt');
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expect(getExtension('file.test.ts')).toBe('.ts');
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expect(getExtension('file')).toBe('');
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expect(getExtension('.gitignore')).toBe('');
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});
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it('should remove extension', () => {
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expect(removeExtension('/path/to/file.txt')).toBe('/path/to/file');
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expect(removeExtension('file')).toBe('file');
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});
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});
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describe('URL Processing', () => {
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const isValidUrl = (str: string): boolean => {
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try {
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new URL(str);
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return true;
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} catch {
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return false;
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}
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};
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const getUrlHost = (url: string): string | null => {
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try {
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return new URL(url).host;
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} catch {
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return null;
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}
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};
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|
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const getUrlPath = (url: string): string | null => {
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try {
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return new URL(url).pathname;
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} catch {
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return null;
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||||
}
|
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};
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const addQueryParam = (url: string, key: string, value: string): string => {
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const urlObj = new URL(url);
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urlObj.searchParams.set(key, value);
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return urlObj.toString();
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};
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it('should validate URLs', () => {
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expect(isValidUrl('https://example.com')).toBe(true);
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expect(isValidUrl('http://localhost:3000')).toBe(true);
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expect(isValidUrl('not a url')).toBe(false);
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expect(isValidUrl('')).toBe(false);
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});
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it('should get URL host', () => {
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expect(getUrlHost('https://example.com/path')).toBe('example.com');
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expect(getUrlHost('http://localhost:3000')).toBe('localhost:3000');
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});
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it('should get URL path', () => {
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expect(getUrlPath('https://example.com/path/to/page')).toBe('/path/to/page');
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expect(getUrlPath('https://example.com')).toBe('/');
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});
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it('should add query parameters', () => {
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const result = addQueryParam('https://example.com', 'key', 'value');
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expect(result).toBe('https://example.com/?key=value');
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});
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});
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describe('Whitespace Processing', () => {
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const normalizeWhitespace = (str: string): string => {
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return str.replace(/\s+/g, ' ').trim();
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};
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|
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const removeAllWhitespace = (str: string): string => {
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return str.replace(/\s/g, '');
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};
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|
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const trimLines = (str: string): string => {
|
||||
return str.split('\n').map(line => line.trim()).join('\n');
|
||||
};
|
||||
|
||||
const indentLines = (str: string, spaces: number): string => {
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const indent = ' '.repeat(spaces);
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return str.split('\n').map(line => indent + line).join('\n');
|
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};
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it('should normalize whitespace', () => {
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expect(normalizeWhitespace(' hello world ')).toBe('hello world');
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expect(normalizeWhitespace('hello\n\nworld')).toBe('hello world');
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});
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it('should remove all whitespace', () => {
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expect(removeAllWhitespace('hello world')).toBe('helloworld');
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||||
expect(removeAllWhitespace(' a b c ')).toBe('abc');
|
||||
});
|
||||
|
||||
it('should trim each line', () => {
|
||||
expect(trimLines(' hello \n world ')).toBe('hello\nworld');
|
||||
});
|
||||
|
||||
it('should indent lines', () => {
|
||||
expect(indentLines('a\nb', 2)).toBe(' a\n b');
|
||||
});
|
||||
});
|
||||
|
||||
describe('Search and Replace', () => {
|
||||
const replaceAll = (str: string, search: string, replace: string): string => {
|
||||
return str.split(search).join(replace);
|
||||
};
|
||||
|
||||
const replaceFirst = (str: string, search: string, replace: string): string => {
|
||||
const index = str.indexOf(search);
|
||||
if (index === -1) return str;
|
||||
return str.substring(0, index) + replace + str.substring(index + search.length);
|
||||
};
|
||||
|
||||
const replaceLast = (str: string, search: string, replace: string): string => {
|
||||
const index = str.lastIndexOf(search);
|
||||
if (index === -1) return str;
|
||||
return str.substring(0, index) + replace + str.substring(index + search.length);
|
||||
};
|
||||
|
||||
it('should replace all occurrences', () => {
|
||||
expect(replaceAll('a-b-c', '-', '_')).toBe('a_b_c');
|
||||
});
|
||||
|
||||
it('should replace first occurrence', () => {
|
||||
expect(replaceFirst('a-b-c', '-', '_')).toBe('a_b-c');
|
||||
});
|
||||
|
||||
it('should replace last occurrence', () => {
|
||||
expect(replaceLast('a-b-c', '-', '_')).toBe('a-b_c');
|
||||
});
|
||||
|
||||
it('should handle no matches', () => {
|
||||
expect(replaceAll('abc', 'x', 'y')).toBe('abc');
|
||||
expect(replaceFirst('abc', 'x', 'y')).toBe('abc');
|
||||
expect(replaceLast('abc', 'x', 'y')).toBe('abc');
|
||||
});
|
||||
});
|
||||
|
||||
describe('Comparison', () => {
|
||||
const levenshteinDistance = (a: string, b: string): number => {
|
||||
const matrix: number[][] = [];
|
||||
|
||||
for (let i = 0; i <= b.length; i++) {
|
||||
matrix[i] = [i];
|
||||
}
|
||||
|
||||
for (let j = 0; j <= a.length; j++) {
|
||||
matrix[0][j] = j;
|
||||
}
|
||||
|
||||
for (let i = 1; i <= b.length; i++) {
|
||||
for (let j = 1; j <= a.length; j++) {
|
||||
if (b.charAt(i - 1) === a.charAt(j - 1)) {
|
||||
matrix[i][j] = matrix[i - 1][j - 1];
|
||||
} else {
|
||||
matrix[i][j] = Math.min(
|
||||
matrix[i - 1][j - 1] + 1,
|
||||
matrix[i][j - 1] + 1,
|
||||
matrix[i - 1][j] + 1
|
||||
);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return matrix[b.length][a.length];
|
||||
};
|
||||
|
||||
const similarity = (a: string, b: string): number => {
|
||||
const maxLen = Math.max(a.length, b.length);
|
||||
if (maxLen === 0) return 1;
|
||||
const distance = levenshteinDistance(a, b);
|
||||
return (maxLen - distance) / maxLen;
|
||||
};
|
||||
|
||||
it('should calculate levenshtein distance', () => {
|
||||
expect(levenshteinDistance('kitten', 'sitting')).toBe(3);
|
||||
expect(levenshteinDistance('abc', 'abc')).toBe(0);
|
||||
expect(levenshteinDistance('', 'abc')).toBe(3);
|
||||
});
|
||||
|
||||
it('should calculate similarity', () => {
|
||||
expect(similarity('abc', 'abc')).toBe(1);
|
||||
expect(similarity('', '')).toBe(1);
|
||||
expect(similarity('abc', 'abd')).toBeCloseTo(0.67, 1);
|
||||
});
|
||||
});
|
||||
|
||||
describe('UUID Generation', () => {
|
||||
const uuidRegex = /^[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i;
|
||||
|
||||
const generateUUID = (): string => {
|
||||
return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, (c) => {
|
||||
const r = Math.random() * 16 | 0;
|
||||
const v = c === 'x' ? r : (r & 0x3 | 0x8);
|
||||
return v.toString(16);
|
||||
});
|
||||
};
|
||||
|
||||
const isValidUUID = (str: string): boolean => {
|
||||
return uuidRegex.test(str);
|
||||
};
|
||||
|
||||
it('should generate valid UUID', () => {
|
||||
const uuid = generateUUID();
|
||||
expect(isValidUUID(uuid)).toBe(true);
|
||||
});
|
||||
|
||||
it('should generate unique UUIDs', () => {
|
||||
const uuids = new Set<string>();
|
||||
for (let i = 0; i < 100; i++) {
|
||||
uuids.add(generateUUID());
|
||||
}
|
||||
expect(uuids.size).toBe(100);
|
||||
});
|
||||
|
||||
it('should validate UUIDs', () => {
|
||||
expect(isValidUUID('550e8400-e29b-41d4-a716-446655440000')).toBe(true);
|
||||
expect(isValidUUID('not-a-uuid')).toBe(false);
|
||||
expect(isValidUUID('')).toBe(false);
|
||||
});
|
||||
});
|
||||
|
||||
describe('Slug Generation', () => {
|
||||
const slugify = (str: string): string => {
|
||||
return str
|
||||
.toLowerCase()
|
||||
.normalize('NFD')
|
||||
.replace(/[\u0300-\u036f]/g, '') // Remove diacritics
|
||||
.replace(/[^a-z0-9]+/g, '-')
|
||||
.replace(/^-+|-+$/g, '');
|
||||
};
|
||||
|
||||
it('should convert to slug', () => {
|
||||
expect(slugify('Hello World')).toBe('hello-world');
|
||||
expect(slugify('JavaScript is AWESOME!')).toBe('javascript-is-awesome');
|
||||
});
|
||||
|
||||
it('should handle special characters', () => {
|
||||
expect(slugify('Café & Restaurant')).toBe('cafe-restaurant');
|
||||
expect(slugify('100% Pure!')).toBe('100-pure');
|
||||
});
|
||||
|
||||
it('should handle consecutive special chars', () => {
|
||||
expect(slugify('hello world')).toBe('hello-world');
|
||||
expect(slugify('---hello---')).toBe('hello');
|
||||
});
|
||||
|
||||
it('should handle empty string', () => {
|
||||
expect(slugify('')).toBe('');
|
||||
});
|
||||
});
|
||||
});
|
||||
Reference in New Issue
Block a user