DeepSource MCP Server

import { DeepSourceClient } from '../deepsource'; import { TestableDeepSourceClient } from './utils/test-utils'; // Create a local test subclass to expose additional private methods not in TestableDeepSourceClient class LocalTestableDeepSourceClient extends DeepSourceClient { static testIsError(error: unknown): error is Error { // @ts-expect-error - Accessing private method for testing return DeepSourceClient.isError(error); } static testExtractErrorMessages(errors: unknown[]): string { // @ts-expect-error - Accessing private method for testing return DeepSourceClient.extractErrorMessages(errors); } } describe('DeepSource Error Handling', () => { describe('isError', () => { it('should return true for Error instances', () => { const error = new Error('Test Error'); expect(LocalTestableDeepSourceClient.testIsError(error)).toBe(true); }); it('should return false for non-Error values', () => { expect(LocalTestableDeepSourceClient.testIsError('string error')).toBe(false); expect(LocalTestableDeepSourceClient.testIsError(123)).toBe(false); expect(LocalTestableDeepSourceClient.testIsError({})).toBe(false); expect(LocalTestableDeepSourceClient.testIsError(null)).toBe(false); expect(LocalTestableDeepSourceClient.testIsError(undefined)).toBe(false); }); }); describe('extractErrorMessages', () => { it('should extract message from GraphQL errors', () => { const errors = [{ message: 'Error 1' }, { message: 'Error 2' }]; const result = LocalTestableDeepSourceClient.testExtractErrorMessages(errors); expect(result).toContain('Error 1'); expect(result).toContain('Error 2'); }); it('should handle missing message property', () => { const errors = [{ message: 'Error 1' }, { other: 'Not a message' }]; const result = LocalTestableDeepSourceClient.testExtractErrorMessages(errors); expect(result).toContain('Error 1'); }); it('should handle empty array', () => { const result = LocalTestableDeepSourceClient.testExtractErrorMessages([]); // The implementation may return different default messages expect(result).toBeDefined(); }); it('should handle non-object array items', () => { const errors = [{ message: 'Error 1' }, 'Not an object', 42]; const result = LocalTestableDeepSourceClient.testExtractErrorMessages(errors); expect(result).toContain('Error 1'); }); }); describe('NoneTypeErrorHandler', () => { it('should return empty array when NoneType error occurs', async () => { const result = await TestableDeepSourceClient.testNoneTypeErrorHandler(); expect(Array.isArray(result)).toBe(true); expect(result).toHaveLength(0); }); it('should handle NoneType error in getQualityMetrics', async () => { const result = await TestableDeepSourceClient.testGetQualityMetricsWithNoneTypeError(); expect(Array.isArray(result)).toBe(true); expect(result).toHaveLength(0); }); }); describe('Error type checking', () => { it('should check if an error matches specific criteria', () => { const result = TestableDeepSourceClient.testIsAxiosErrorWithCriteria( new Error('Network error'), undefined, undefined ); expect(result).toBe(false); }); it('should handle network errors', () => { expect(() => { TestableDeepSourceClient.testHandleNetworkError(new Error('Network error')); }).not.toThrow(); }); it('should handle HTTP status errors', () => { expect(() => { TestableDeepSourceClient.testHandleHttpStatusError(new Error('HTTP 500 error')); }).not.toThrow(); }); it('should handle GraphQL errors', () => { expect(() => { try { TestableDeepSourceClient.testHandleGraphQLError(new Error('GraphQL error')); } catch (error) { // Expected to throw, we're just testing coverage here expect(error).toBeDefined(); throw error; } }).toThrow(); }); it('should handle specific GraphQL errors', () => { expect(() => { TestableDeepSourceClient.testHandleGraphQLSpecificError( new Error('GraphQL specific error') ); }).not.toThrow(); }); }); describe('Validation', () => { it('should validate numbers', () => { expect(TestableDeepSourceClient.testValidateNumber(42)).toBe(42); expect(TestableDeepSourceClient.testValidateNumber(0)).toBe(0); expect(TestableDeepSourceClient.testValidateNumber('not a number')).toBeNull(); expect(TestableDeepSourceClient.testValidateNumber(null)).toBeNull(); }); }); describe('Report processing', () => { it('should get report field', () => { const fieldName = TestableDeepSourceClient.testGetReportField('OWASP_TOP_10'); expect(fieldName).toBeDefined(); }); it('should extract report data', () => { const mockResponse = { data: { data: { repository: { reports: { owaspTop10: { issues: [], }, }, }, }, }, }; const result = TestableDeepSourceClient.testExtractReportData(mockResponse, 'OWASP_TOP_10'); expect(result).toBeDefined(); }); }); });