mirror of
https://github.com/catlog22/Claude-Code-Workflow.git
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964292ebdb
- Implemented final verification tests for contentPattern to validate behavior with empty strings, dangerous patterns, and normal patterns. - Created glob pattern matching tests to verify regex conversion and matching functionality. - Developed infinite loop risk tests using Worker threads to isolate potential blocking operations. - Introduced optimized contentPattern tests to validate improvements in the findMatches function. - Added verification tests to assess the effectiveness of contentPattern optimizations. - Conducted safety tests for contentPattern to identify edge cases and potential vulnerabilities. - Implemented unrestricted loop tests to analyze infinite loop risks without match limits. - Developed tests for zero-width pattern detection logic to ensure proper handling of dangerous regex patterns.
99 lines
2.7 KiB
JavaScript
99 lines
2.7 KiB
JavaScript
/**
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* 测试零宽度模式的检测逻辑
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*/
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console.log('=== 零宽度模式检测测试 ===\n');
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const testPatterns = [
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{ pattern: '', desc: '空字符串' },
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{ pattern: 'x*', desc: '零宽量词' },
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{ pattern: 'a|', desc: '或空匹配' },
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{ pattern: '.*', desc: '点星' },
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{ pattern: 'CCW', desc: '正常模式' },
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{ pattern: 'TODO', desc: '正常模式2' }
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];
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for (const test of testPatterns) {
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console.log(`\n测试: ${test.desc}`);
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console.log(`模式: "${test.pattern}"`);
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try {
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const regex = new RegExp(test.pattern, 'gm');
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const emptyTest = regex.exec('');
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console.log(`第1次匹配:`, emptyTest ? {
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match: emptyTest[0],
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index: emptyTest.index,
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length: emptyTest[0].length
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} : 'null');
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if (emptyTest && emptyTest[0] === '' && emptyTest.index === 0) {
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const secondMatch = regex.exec('');
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console.log(`第2次匹配:`, secondMatch ? {
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match: secondMatch[0],
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index: secondMatch.index,
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length: secondMatch[0].length
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} : 'null');
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if (secondMatch && secondMatch.index === 0) {
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console.log(`❌ 危险: 卡在位置 0`);
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} else {
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console.log(`✅ 安全: 第2次匹配在位置 ${secondMatch?.index || '(end)'}`);
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}
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} else {
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console.log(`✅ 安全: 第1次匹配后位置 = ${emptyTest?.index || '(end)'}`);
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}
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} catch (error) {
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console.log(`❌ 错误: ${error.message}`);
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}
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}
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console.log(`\n${'='.repeat(60)}`);
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console.log('\n结论:');
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console.log(`
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问题分析:
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- 空字符串 "" 应该被 pattern === '' 检查捕获
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- "x*" 在空字符串上:
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* 第1次匹配: "" (index=0)
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* 第2次匹配: null (已经结束)
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* 所以不会卡住！
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- "a|" 在空字符串上:
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* 第1次匹配: "" (index=0, 匹配 | 右侧)
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* 第2次匹配: null (已经结束)
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* 所以也不会卡住！
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- ".*" 在空字符串上:
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* 第1次匹配: "" (index=0)
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* 第2次匹配: null (已经结束)
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真正的危险是:
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- 在**非空内容**上反复匹配空字符串
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- 例如: "x*" 在 "abc" 上会匹配 4 次（a 前各一次）
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`);
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console.log('\n真正的危险测试:');
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console.log('模式 "x*" 在内容 "abc" 上的行为:');
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const regex = new RegExp('x*', 'gm');
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const content = 'abc';
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let match;
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let count = 0;
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let lastIndex = -1;
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while ((match = regex.exec(content)) !== null && count < 10) {
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count++;
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console.log(` 匹配 #${count}: "${match[0]}" at index ${match.index}`);
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if (match.index === lastIndex) {
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console.log(\` ❌ 卡住! 停留在 index \${match.index}\`);
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break;
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}
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lastIndex = match.index;
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}
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if (count >= 10) {
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console.log(' ⚠️ 达到 10 次迭代限制');
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}
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console.log(`\n结论: "x*" 会在非 x 字符的每个位置匹配空字符串!`);
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