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| 1 | +/* |
| 2 | + * Copyright OpenSearch Contributors |
| 3 | + * SPDX-License-Identifier: Apache-2.0 |
| 4 | + */ |
| 5 | + |
| 6 | +import { PPLWorkerProxyService } from './worker_proxy_service'; |
| 7 | +import * as monacoEnvironment from '../monaco_environment'; |
| 8 | +import { WorkerLabels } from '../worker_config'; |
| 9 | + |
| 10 | +jest.mock('../monaco_environment'); |
| 11 | + |
| 12 | +describe('PPLWorkerProxyService', () => { |
| 13 | + let mockWorker: any; |
| 14 | + let service: PPLWorkerProxyService; |
| 15 | + |
| 16 | + beforeEach(() => { |
| 17 | + mockWorker = { |
| 18 | + postMessage: jest.fn(), |
| 19 | + terminate: jest.fn(), |
| 20 | + onmessage: null, |
| 21 | + onerror: null, |
| 22 | + }; |
| 23 | + |
| 24 | + (monacoEnvironment.getWorker as jest.Mock).mockReturnValue(mockWorker); |
| 25 | + service = new PPLWorkerProxyService(); |
| 26 | + }); |
| 27 | + |
| 28 | + afterEach(() => { |
| 29 | + jest.clearAllMocks(); |
| 30 | + }); |
| 31 | + |
| 32 | + describe('setup', () => { |
| 33 | + it('should initialize worker for subsequent operations', async () => { |
| 34 | + service.setup(); |
| 35 | + |
| 36 | + expect(monacoEnvironment.getWorker).toHaveBeenCalledWith(WorkerLabels.PPL); |
| 37 | + |
| 38 | + // Should be able to call tokenize/validate after setup |
| 39 | + const tokenizePromise = service.tokenize('test'); |
| 40 | + expect(mockWorker.postMessage).toHaveBeenCalled(); |
| 41 | + |
| 42 | + // Simulate worker response |
| 43 | + const messageData = mockWorker.postMessage.mock.calls[0][0]; |
| 44 | + mockWorker.onmessage({ data: { id: messageData.id, result: [] } }); |
| 45 | + |
| 46 | + await expect(tokenizePromise).resolves.toEqual([]); |
| 47 | + }); |
| 48 | + |
| 49 | + it('should be idempotent - multiple calls do not create multiple workers', () => { |
| 50 | + service.setup(); |
| 51 | + service.setup(); |
| 52 | + service.setup(); |
| 53 | + |
| 54 | + expect(monacoEnvironment.getWorker).toHaveBeenCalledTimes(1); |
| 55 | + }); |
| 56 | + |
| 57 | + it('should propagate error if setBuildHash not called', () => { |
| 58 | + (monacoEnvironment.getWorker as jest.Mock).mockImplementation(() => { |
| 59 | + throw new Error('Build hash must be set'); |
| 60 | + }); |
| 61 | + |
| 62 | + expect(() => service.setup()).toThrow('Build hash must be set'); |
| 63 | + }); |
| 64 | + }); |
| 65 | + |
| 66 | + describe('tokenize', () => { |
| 67 | + it('should throw error if setup not called', async () => { |
| 68 | + await expect(service.tokenize('test')).rejects.toThrow('has not been setup'); |
| 69 | + }); |
| 70 | + |
| 71 | + it('should return token array after setup', async () => { |
| 72 | + service.setup(); |
| 73 | + |
| 74 | + const tokenizePromise = service.tokenize('search source=logs'); |
| 75 | + |
| 76 | + // Simulate worker response |
| 77 | + const messageData = mockWorker.postMessage.mock.calls[0][0]; |
| 78 | + const mockTokens = [{ type: 'search', value: 'search' }]; |
| 79 | + mockWorker.onmessage({ data: { id: messageData.id, result: mockTokens } }); |
| 80 | + |
| 81 | + const result = await tokenizePromise; |
| 82 | + expect(result).toEqual(mockTokens); |
| 83 | + }); |
| 84 | + }); |
| 85 | + |
| 86 | + describe('validate', () => { |
| 87 | + it('should throw error if setup not called', async () => { |
| 88 | + await expect(service.validate('test')).rejects.toThrow('has not been setup'); |
| 89 | + }); |
| 90 | + |
| 91 | + it('should return validation result after setup', async () => { |
| 92 | + service.setup(); |
| 93 | + |
| 94 | + const validatePromise = service.validate('search source=logs'); |
| 95 | + |
| 96 | + // Simulate worker response |
| 97 | + const messageData = mockWorker.postMessage.mock.calls[0][0]; |
| 98 | + const mockValidation = { isValid: true, errors: [] }; |
| 99 | + mockWorker.onmessage({ data: { id: messageData.id, result: mockValidation } }); |
| 100 | + |
| 101 | + const result = await validatePromise; |
| 102 | + expect(result).toEqual(mockValidation); |
| 103 | + }); |
| 104 | + |
| 105 | + it('should handle error from worker', async () => { |
| 106 | + service.setup(); |
| 107 | + |
| 108 | + const validatePromise = service.validate('invalid'); |
| 109 | + |
| 110 | + // Simulate worker error response |
| 111 | + const messageData = mockWorker.postMessage.mock.calls[0][0]; |
| 112 | + mockWorker.onmessage({ data: { id: messageData.id, error: 'Validation failed' } }); |
| 113 | + |
| 114 | + await expect(validatePromise).rejects.toThrow('Validation failed'); |
| 115 | + }); |
| 116 | + |
| 117 | + it('should timeout if worker never responds', async () => { |
| 118 | + jest.useFakeTimers(); |
| 119 | + service.setup(); |
| 120 | + |
| 121 | + const validatePromise = service.validate('test'); |
| 122 | + |
| 123 | + // Fast-forward time past the 5 second timeout |
| 124 | + jest.advanceTimersByTime(5001); |
| 125 | + |
| 126 | + await expect(validatePromise).rejects.toThrow('Worker timeout'); |
| 127 | + |
| 128 | + jest.useRealTimers(); |
| 129 | + }); |
| 130 | + }); |
| 131 | + |
| 132 | + describe('stop', () => { |
| 133 | + it('should clean up worker resources', async () => { |
| 134 | + service.setup(); |
| 135 | + service.stop(); |
| 136 | + |
| 137 | + expect(mockWorker.terminate).toHaveBeenCalled(); |
| 138 | + |
| 139 | + // Subsequent operations should fail |
| 140 | + await expect(service.tokenize('test')).rejects.toThrow('has not been setup'); |
| 141 | + }); |
| 142 | + |
| 143 | + it('should be safe to call without setup', () => { |
| 144 | + expect(() => service.stop()).not.toThrow(); |
| 145 | + }); |
| 146 | + |
| 147 | + it('should be safe to call multiple times', () => { |
| 148 | + service.setup(); |
| 149 | + service.stop(); |
| 150 | + service.stop(); |
| 151 | + |
| 152 | + expect(mockWorker.terminate).toHaveBeenCalledTimes(1); |
| 153 | + }); |
| 154 | + }); |
| 155 | +}); |
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