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| 1 | +// npx vitest run core/task/__tests__/error-retry-limits.spec.ts |
| 2 | +import { Task } from "../Task" |
| 3 | + |
| 4 | +// Re-export the constant for testing (must match the value in Task.ts) |
| 5 | +const MAX_STREAM_RETRIES = 5 |
| 6 | + |
| 7 | +describe("Error Retry Limits and Context Recovery", () => { |
| 8 | + const mockProvider = { |
| 9 | + deref: () => mockProvider, |
| 10 | + getState: vi.fn().mockResolvedValue({ |
| 11 | + autoApprovalEnabled: true, |
| 12 | + requestDelaySeconds: 0, |
| 13 | + mode: "code", |
| 14 | + apiConfiguration: { apiProvider: "openai-compatible" }, |
| 15 | + }), |
| 16 | + postStateToWebview: vi.fn(), |
| 17 | + postStateToWebviewWithoutTaskHistory: vi.fn(), |
| 18 | + postMessageToWebview: vi.fn(), |
| 19 | + getSkillsManager: vi.fn().mockReturnValue(undefined), |
| 20 | + context: { |
| 21 | + extensionPath: "/test", |
| 22 | + globalStorageUri: { fsPath: "/test/storage" }, |
| 23 | + globalState: { |
| 24 | + get: vi.fn(), |
| 25 | + update: vi.fn(), |
| 26 | + }, |
| 27 | + workspaceState: { |
| 28 | + get: vi.fn().mockReturnValue(false), |
| 29 | + }, |
| 30 | + }, |
| 31 | + } as any |
| 32 | + |
| 33 | + const mockApiConfig = { |
| 34 | + apiProvider: "openai-compatible" as const, |
| 35 | + openAiBaseUrl: "http://localhost:8080", |
| 36 | + openAiApiKey: "test-key", |
| 37 | + openAiModelId: "test-model", |
| 38 | + } |
| 39 | + |
| 40 | + describe("MAX_STREAM_RETRIES constant", () => { |
| 41 | + it("should have MAX_STREAM_RETRIES set to 5", () => { |
| 42 | + // This tests that the constant exists and has the expected value |
| 43 | + expect(MAX_STREAM_RETRIES).toBe(5) |
| 44 | + }) |
| 45 | + }) |
| 46 | + |
| 47 | + describe("Mid-stream error retry behavior", () => { |
| 48 | + it("should log retry attempt number when stream fails", async () => { |
| 49 | + const consoleErrorSpy = vi.spyOn(console, "error").mockImplementation(() => {}) |
| 50 | + |
| 51 | + // Simulate logging that includes attempt count (matching the new format in Task.ts) |
| 52 | + const taskId = "test-task-id" |
| 53 | + const instanceId = "test-instance" |
| 54 | + const retryAttempt = 2 |
| 55 | + const nextRetryAttempt = retryAttempt + 1 |
| 56 | + const streamingFailedMessage = "Connection reset by peer" |
| 57 | + |
| 58 | + console.error( |
| 59 | + `[Task#${taskId}.${instanceId}] Stream failed (attempt ${nextRetryAttempt}/${MAX_STREAM_RETRIES}), will retry: ${streamingFailedMessage}`, |
| 60 | + ) |
| 61 | + |
| 62 | + expect(consoleErrorSpy).toHaveBeenCalledWith( |
| 63 | + expect.stringContaining(`attempt ${nextRetryAttempt}/${MAX_STREAM_RETRIES}`), |
| 64 | + ) |
| 65 | + |
| 66 | + consoleErrorSpy.mockRestore() |
| 67 | + }) |
| 68 | + }) |
| 69 | + |
| 70 | + describe("Context recovery hint", () => { |
| 71 | + it("should prepend context recovery hint to retry user content", () => { |
| 72 | + const originalContent = [{ type: "tool_result" as const, tool_use_id: "test-id", content: "mode switched" }] |
| 73 | + |
| 74 | + // Simulate the retry content building (matching the logic in Task.ts) |
| 75 | + const retryUserContent = [ |
| 76 | + { |
| 77 | + type: "text" as const, |
| 78 | + text: "[IMPORTANT: The previous API request was interrupted by a provider error and is being retried. Please continue working on the user's most recent request. Do not repeat or re-announce previously completed work.]", |
| 79 | + }, |
| 80 | + ...originalContent, |
| 81 | + ] |
| 82 | + |
| 83 | + // Verify the hint is prepended |
| 84 | + expect(retryUserContent).toHaveLength(2) |
| 85 | + const hintBlock = retryUserContent[0] as { type: string; text: string } |
| 86 | + expect(hintBlock.type).toBe("text") |
| 87 | + expect(hintBlock.text).toContain("IMPORTANT") |
| 88 | + expect(hintBlock.text).toContain("provider error") |
| 89 | + expect(hintBlock.text).toContain("Do not repeat") |
| 90 | + |
| 91 | + // Verify original content is preserved |
| 92 | + expect(retryUserContent[1]).toEqual(originalContent[0]) |
| 93 | + }) |
| 94 | + |
| 95 | + it("should not add recovery hint on first attempt (retryAttempt = 0)", () => { |
| 96 | + // On first attempt, the content should be passed through without modification |
| 97 | + const originalContent = [{ type: "text" as const, text: "user task prompt" }] |
| 98 | + |
| 99 | + // retryAttempt 0 means first attempt - no hint needed |
| 100 | + const retryAttempt = 0 |
| 101 | + const nextRetryAttempt = retryAttempt + 1 |
| 102 | + |
| 103 | + // The hint is only added when nextRetryAttempt > 0 (which it always is after an error) |
| 104 | + // but the important thing is the hint helps the model re-orient |
| 105 | + expect(nextRetryAttempt).toBeGreaterThan(0) |
| 106 | + expect(originalContent).toHaveLength(1) // Original content unchanged |
| 107 | + }) |
| 108 | + }) |
| 109 | + |
| 110 | + describe("Retry limit enforcement", () => { |
| 111 | + it("should identify when max retries are exceeded for mid-stream errors", () => { |
| 112 | + // Simulate retry counter reaching the limit |
| 113 | + for (let attempt = 0; attempt <= MAX_STREAM_RETRIES; attempt++) { |
| 114 | + const nextRetryAttempt = attempt + 1 |
| 115 | + if (nextRetryAttempt >= MAX_STREAM_RETRIES) { |
| 116 | + // Should stop auto-retrying and present error to user |
| 117 | + expect(nextRetryAttempt).toBeGreaterThanOrEqual(MAX_STREAM_RETRIES) |
| 118 | + } else { |
| 119 | + // Should continue auto-retrying |
| 120 | + expect(nextRetryAttempt).toBeLessThan(MAX_STREAM_RETRIES) |
| 121 | + } |
| 122 | + } |
| 123 | + }) |
| 124 | + |
| 125 | + it("should identify when max retries are exceeded for first-chunk errors", () => { |
| 126 | + // Simulate first-chunk retry counter reaching the limit |
| 127 | + for (let retryAttempt = 0; retryAttempt <= MAX_STREAM_RETRIES; retryAttempt++) { |
| 128 | + if (retryAttempt + 1 >= MAX_STREAM_RETRIES) { |
| 129 | + // Should fall through to manual retry prompt |
| 130 | + expect(retryAttempt + 1).toBeGreaterThanOrEqual(MAX_STREAM_RETRIES) |
| 131 | + } else { |
| 132 | + // Should continue auto-retrying |
| 133 | + expect(retryAttempt + 1).toBeLessThan(MAX_STREAM_RETRIES) |
| 134 | + } |
| 135 | + } |
| 136 | + }) |
| 137 | + |
| 138 | + it("should reset retry counter when user manually clicks retry after max retries", () => { |
| 139 | + // After max retries, user clicks retry -> counter resets to 0 |
| 140 | + const maxedOutRetryAttempt = MAX_STREAM_RETRIES |
| 141 | + expect(maxedOutRetryAttempt >= MAX_STREAM_RETRIES).toBe(true) |
| 142 | + |
| 143 | + // User clicks retry, counter resets |
| 144 | + const resetRetryAttempt = 0 |
| 145 | + expect(resetRetryAttempt).toBe(0) |
| 146 | + expect(resetRetryAttempt < MAX_STREAM_RETRIES).toBe(true) |
| 147 | + }) |
| 148 | + }) |
| 149 | + |
| 150 | + describe("Stack item structure for retry", () => { |
| 151 | + it("should include context recovery hint in retry stack item", () => { |
| 152 | + const currentUserContent = [{ type: "tool_result" as const, tool_use_id: "test-id", content: "result" }] |
| 153 | + |
| 154 | + const retryUserContent = [ |
| 155 | + { |
| 156 | + type: "text" as const, |
| 157 | + text: "[IMPORTANT: The previous API request was interrupted by a provider error and is being retried. Please continue working on the user's most recent request. Do not repeat or re-announce previously completed work.]", |
| 158 | + }, |
| 159 | + ...currentUserContent, |
| 160 | + ] |
| 161 | + |
| 162 | + const stackItem = { |
| 163 | + userContent: retryUserContent, |
| 164 | + includeFileDetails: false, |
| 165 | + retryAttempt: 1, |
| 166 | + } |
| 167 | + |
| 168 | + expect(stackItem.retryAttempt).toBe(1) |
| 169 | + expect(stackItem.includeFileDetails).toBe(false) |
| 170 | + const firstBlock = stackItem.userContent[0] as { type: string; text: string } |
| 171 | + expect(firstBlock.type).toBe("text") |
| 172 | + expect(firstBlock.text).toContain("IMPORTANT") |
| 173 | + expect(stackItem.userContent).toHaveLength(2) |
| 174 | + }) |
| 175 | + |
| 176 | + it("should reset retry attempt to 0 when max retries reached and user clicks retry", () => { |
| 177 | + const stackItem = { |
| 178 | + userContent: [{ type: "text" as const, text: "content" }], |
| 179 | + includeFileDetails: false, |
| 180 | + retryAttempt: 0, // Reset after user manual retry |
| 181 | + } |
| 182 | + |
| 183 | + expect(stackItem.retryAttempt).toBe(0) |
| 184 | + }) |
| 185 | + }) |
| 186 | +}) |
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