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<!doctype html> <html lang="en"> <head> <title>Code coverage report for src/validation/schema-validator.ts</title> <meta charset="utf-8" /> <link rel="stylesheet" href="../../prettify.css" /> <link rel="stylesheet" href="../../base.css" /> <link rel="shortcut icon" type="image/x-icon" href="../../favicon.png" /> <meta name="viewport" content="width=device-width, initial-scale=1" /> <style type='text/css'> .coverage-summary .sorter { background-image: url(../../sort-arrow-sprite.png); } </style> </head> <body> <div class='wrapper'> <div class='pad1'> <h1><a href="../../index.html">All files</a> / <a href="index.html">src/validation</a> schema-validator.ts</h1> <div class='clearfix'> <div class='fl pad1y space-right2'> 0% Statements 0/72 </div> <div class='fl pad1y space-right2'> 0% Branches 0/74 </div> <div class='fl pad1y space-right2'> 0% Functions 0/13 </div> <div class='fl pad1y space-right2'> 0% Lines 0/72 </div> </div> Press n or j to go to the next uncovered block, b, p or k for the previous block. <template id="filterTemplate"> <div class="quiet"> Filter: <input type="search" id="fileSearch"> </div> </template> </div> <div class='status-line low'></div> <pre><table class="coverage"> <tr><td class="line-count quiet"><a name='L1'></a><a href='#L1'>1</a> <a name='L2'></a><a href='#L2'>2</a> <a name='L3'></a><a href='#L3'>3</a> <a name='L4'></a><a href='#L4'>4</a> <a name='L5'></a><a href='#L5'>5</a> <a name='L6'></a><a href='#L6'>6</a> <a name='L7'></a><a href='#L7'>7</a> <a name='L8'></a><a href='#L8'>8</a> <a name='L9'></a><a href='#L9'>9</a> <a name='L10'></a><a href='#L10'>10</a> <a name='L11'></a><a href='#L11'>11</a> <a name='L12'></a><a href='#L12'>12</a> <a name='L13'></a><a href='#L13'>13</a> <a name='L14'></a><a href='#L14'>14</a> <a name='L15'></a><a href='#L15'>15</a> <a name='L16'></a><a href='#L16'>16</a> <a name='L17'></a><a href='#L17'>17</a> <a name='L18'></a><a href='#L18'>18</a> <a name='L19'></a><a href='#L19'>19</a> <a name='L20'></a><a 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name='L418'></a><a href='#L418'>418</a></td><td class="line-coverage quiet">                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   </td><td class="text"><pre class="prettyprint lang-js">/** * JSON Schema Validator for MCP Tools * * Validates tool input schemas against JSON Schema specification */   import { ValidationResult, ValidationError, ValidationSeverity, SchemaValidationOptions } from './types'; import { SUPPORTED_JSON_SCHEMA_VERSION, VALID_JSON_SCHEMA_TYPES, MAX_SCHEMA_DEPTH } from './constants';   /** * JSON Schema validation utilities */ export class SchemaValidator { private config: SchemaValidationOptions;   constructor(config: SchemaValidationOptions = {}) { this.config = { strict: true, validateJsonSchemaDraft: true, maxSchemaDepth: MAX_SCHEMA_DEPTH, ...config }; }   /** * Validate a JSON Schema object */ public validateSchema(schema: Record<string, any>): ValidationResult { const errors: ValidationError[] = []; const warnings: ValidationError[] = []; const info: ValidationError[] = [];   // Basic structure validation this.validateBasicStructure(schema, errors, warnings); // JSON Schema draft validation Iif (this.config.validateJsonSchemaDraft) { this.validateJsonSchemaDraft(schema, errors, warnings); } // Schema depth validation Iif (this.config.maxSchemaDepth) { this.validateSchemaDepth(schema, this.config.maxSchemaDepth, errors, warnings); } // Type-specific validation this.validateTypeSpecificRules(schema, errors, warnings, info);   return { valid: errors.length === 0, errors, warnings, info, summary: { errorCount: errors.length, warningCount: warnings.length, infoCount: info.length } }; }   /** * Validate basic JSON Schema structure */ private validateBasicStructure( schema: Record<string, any>, errors: ValidationError[], warnings: ValidationError[] ): void { // Check if type is specified Iif (!schema.type && this.config.strict) { errors.push({ code: 'SCHEMA_TYPE_MISSING', message: 'Schema must specify a type property', severity: ValidationSeverity.ERROR, path: 'type', expected: 'one of: ' + VALID_JSON_SCHEMA_TYPES.join(', '), actual: undefined, specReference: 'JSON Schema Core Specification' }); }   // Validate type value Iif (schema.type && !VALID_JSON_SCHEMA_TYPES.includes(schema.type)) { errors.push({ code: 'SCHEMA_TYPE_INVALID', message: `Invalid schema type: ${schema.type}`, severity: ValidationSeverity.ERROR, path: 'type', expected: VALID_JSON_SCHEMA_TYPES.join(', '), actual: schema.type, specReference: 'JSON Schema Core Specification' }); }   // Check for required properties in object schemas Iif (schema.type === 'object') { Iif (!schema.properties && this.config.strict) { warnings.push({ code: 'OBJECT_SCHEMA_NO_PROPERTIES', message: 'Object schemas should define properties', severity: ValidationSeverity.WARNING, path: 'properties', expected: 'object defining schema properties', actual: undefined, specReference: 'JSON Schema Validation' }); }   // Validate required array Iif (schema.required) { if (!Array.isArray(schema.required)) { errors.push({ code: 'REQUIRED_NOT_ARRAY', message: 'Required property must be an array', severity: ValidationSeverity.ERROR, path: 'required', expected: 'array of strings', actual: typeof schema.required, specReference: 'JSON Schema Validation' }); } else { // Check each required item schema.required.forEach((item: any, index: number) => { Iif (typeof item !== 'string') { errors.push({ code: 'REQUIRED_ITEM_NOT_STRING', message: `Required item at index ${index} must be a string`, severity: ValidationSeverity.ERROR, path: `required[${index}]`, expected: 'string', actual: typeof item, specReference: 'JSON Schema Validation' }); } }); } } }   // Check for array items schema Iif (schema.type === 'array' && !schema.items && this.config.strict) { warnings.push({ code: 'ARRAY_SCHEMA_NO_ITEMS', message: 'Array schemas should define items', severity: ValidationSeverity.WARNING, path: 'items', expected: 'schema for array items', actual: undefined, specReference: 'JSON Schema Validation' }); } }   /** * Validate JSON Schema draft compliance */ private validateJsonSchemaDraft( schema: Record<string, any>, _errors: ValidationError[], warnings: ValidationError[] ): void { // Check for $schema property Iif (schema.$schema) { Iif (schema.$schema !== SUPPORTED_JSON_SCHEMA_VERSION) { warnings.push({ code: 'UNSUPPORTED_SCHEMA_VERSION', message: `Unsupported JSON Schema version: ${schema.$schema}`, severity: ValidationSeverity.WARNING, path: '$schema', expected: SUPPORTED_JSON_SCHEMA_VERSION, actual: schema.$schema, specReference: 'JSON Schema Meta-Schema' }); } }   // Check for deprecated keywords const deprecatedKeywords = ['id']; // 'id' is deprecated in favor of '$id' deprecatedKeywords.forEach(keyword => { Iif (schema[keyword]) { warnings.push({ code: 'DEPRECATED_KEYWORD', message: `Keyword '${keyword}' is deprecated`, severity: ValidationSeverity.WARNING, path: keyword, expected: keyword === 'id' ? '$id' : 'updated keyword', actual: keyword, specReference: 'JSON Schema Migration Guide' }); } }); }   /** * Validate schema nesting depth */ private validateSchemaDepth( schema: Record<string, any>, maxDepth: number, errors: ValidationError[], _warnings: ValidationError[], currentDepth: number = 0, path: string = '' ): void { Iif (currentDepth > maxDepth) { errors.push({ code: 'SCHEMA_DEPTH_EXCEEDED', message: `Schema nesting depth exceeds maximum of ${maxDepth}`, severity: ValidationSeverity.ERROR, path, expected: `depth <= ${maxDepth}`, actual: `depth > ${maxDepth}`, specReference: 'Best Practices - Schema Complexity' }); return; // Stop checking deeper }   // Recursively check nested schemas Iif (schema.properties && typeof schema.properties === 'object') { Object.entries(schema.properties).forEach(([key, value]) => { Iif (value && typeof value === 'object') { this.validateSchemaDepth( value as Record<string, any>, maxDepth, errors, _warnings, currentDepth + 1, path ? `${path}.properties.${key}` : `properties.${key}` ); } }); }   Iif (schema.items && typeof schema.items === 'object') { this.validateSchemaDepth( schema.items as Record<string, any>, maxDepth, errors, _warnings, currentDepth + 1, path ? `${path}.items` : 'items' ); }   Iif (schema.additionalProperties && typeof schema.additionalProperties === 'object') { this.validateSchemaDepth( schema.additionalProperties as Record<string, any>, maxDepth, errors, _warnings, currentDepth + 1, path ? `${path}.additionalProperties` : 'additionalProperties' ); } }   /** * Validate type-specific schema rules */ private validateTypeSpecificRules( schema: Record<string, any>, errors: ValidationError[], warnings: ValidationError[], info: ValidationError[] ): void { switch (schema.type) { case 'string': this.validateStringSchema(schema, errors, warnings, info); break; case 'number': case 'integer': this.validateNumericSchema(schema, errors, warnings, info); break; case 'object': this.validateObjectSchema(schema, errors, warnings, info); break; case 'array': this.validateArraySchema(schema, errors, warnings, info); break; } }   /** * Validate string-specific schema properties */ private validateStringSchema( schema: Record<string, any>, errors: ValidationError[], _warnings: ValidationError[], _info: ValidationError[] ): void { // Check for conflicting constraints Iif (schema.minLength !== undefined && schema.maxLength !== undefined) { Iif (schema.minLength > schema.maxLength) { errors.push({ code: 'STRING_LENGTH_CONFLICT', message: 'minLength cannot be greater than maxLength', severity: ValidationSeverity.ERROR, path: 'minLength', expected: `<= ${schema.maxLength}`, actual: schema.minLength, specReference: 'JSON Schema Validation' }); } }   // Check for negative lengths Iif (schema.minLength !== undefined && schema.minLength < 0) { errors.push({ code: 'NEGATIVE_MIN_LENGTH', message: 'minLength cannot be negative', severity: ValidationSeverity.ERROR, path: 'minLength', expected: '>= 0', actual: schema.minLength, specReference: 'JSON Schema Validation' }); } }   /** * Validate numeric schema properties */ private validateNumericSchema( schema: Record<string, any>, errors: ValidationError[], _warnings: ValidationError[], _info: ValidationError[] ): void { // Check for conflicting constraints Iif (schema.minimum !== undefined && schema.maximum !== undefined) { Iif (schema.minimum > schema.maximum) { errors.push({ code: 'NUMERIC_RANGE_CONFLICT', message: 'minimum cannot be greater than maximum', severity: ValidationSeverity.ERROR, path: 'minimum', expected: `<= ${schema.maximum}`, actual: schema.minimum, specReference: 'JSON Schema Validation' }); } }   // Check multipleOf Iif (schema.multipleOf !== undefined && schema.multipleOf <= 0) { errors.push({ code: 'INVALID_MULTIPLE_OF', message: 'multipleOf must be greater than 0', severity: ValidationSeverity.ERROR, path: 'multipleOf', expected: '> 0', actual: schema.multipleOf, specReference: 'JSON Schema Validation' }); } }   /** * Validate object schema properties */ private validateObjectSchema( schema: Record<string, any>, errors: ValidationError[], _warnings: ValidationError[], _info: ValidationError[] ): void { // Check for property count constraints Iif (schema.minProperties !== undefined && schema.maxProperties !== undefined) { Iif (schema.minProperties > schema.maxProperties) { errors.push({ code: 'OBJECT_PROPERTIES_CONFLICT', message: 'minProperties cannot be greater than maxProperties', severity: ValidationSeverity.ERROR, path: 'minProperties', expected: `<= ${schema.maxProperties}`, actual: schema.minProperties, specReference: 'JSON Schema Validation' }); } } }   /** * Validate array schema properties */ private validateArraySchema( schema: Record<string, any>, errors: ValidationError[], _warnings: ValidationError[], _info: ValidationError[] ): void { // Check for item count constraints Iif (schema.minItems !== undefined && schema.maxItems !== undefined) { Iif (schema.minItems > schema.maxItems) { errors.push({ code: 'ARRAY_ITEMS_CONFLICT', message: 'minItems cannot be greater than maxItems', severity: ValidationSeverity.ERROR, path: 'minItems', expected: `<= ${schema.maxItems}`, actual: schema.minItems, specReference: 'JSON Schema Validation' }); } } } } </pre></td></tr></table></pre> <div class='push'></div> </div> <div class='footer quiet pad2 space-top1 center small'> Code coverage generated by <a href="https://istanbul.js.org/" target="_blank" rel="noopener noreferrer">istanbul</a> at 2025-06-18T03:57:03.632Z </div> <script src="../../prettify.js"></script> <script> window.onload = function () { prettyPrint(); }; </script> <script src="../../sorter.js"></script> <script src="../../block-navigation.js"></script> </body> </html>

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