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/** * Tests for the file-length ESLint rule */ const { RuleTester } = require('eslint'); const fileLengthRule = require('../file-length'); // Set up the rule tester const ruleTester = new RuleTester({ parserOptions: { ecmaVersion: 2020, sourceType: 'module', }, }); // Helper function to create a code string with a specified number of lines function createCodeWithLines(lineCount) { return 'const x = 1;\n'.repeat(lineCount - 1) + 'const y = 2;'; } // Run the tests ruleTester.run('file-length', fileLengthRule, { valid: [ // Should be valid when it's exactly at the line limit { code: createCodeWithLines(200), filename: 'test.ts', options: [{ maxLines: 200 }] }, // Should be valid when it's under the line limit { code: createCodeWithLines(150), filename: 'test.ts', options: [{ maxLines: 200 }] }, // Should be valid when it's a non-TypeScript file (even if it's over the limit) { code: createCodeWithLines(250), filename: 'test.js', options: [{ maxLines: 200 }] }, // Should be valid when it matches an ignore pattern { code: createCodeWithLines(250), filename: 'test.test.ts', options: [{ maxLines: 200 }] }, // Should be valid with custom ignore pattern { code: createCodeWithLines(250), filename: 'special.ts', options: [{ maxLines: 200, ignorePatterns: ['special.ts'] }] } ], invalid: [ // Should be invalid when it's over the line limit { code: createCodeWithLines(210), filename: 'test.ts', options: [{ maxLines: 200 }], errors: [ { messageId: 'tooLong' } ] }, // Should be invalid with a custom line limit { code: createCodeWithLines(110), filename: 'test.ts', options: [{ maxLines: 100 }], errors: [ { messageId: 'tooLong' } ] } ] }); // Log a success message console.log('All file-length rule tests passed!');