feat(api): abort signal support for openai-codex (completePrompt + createMessage)

src/api/providers/__tests__/openai-codex-native-tool-calls.spec.ts

@@ -526,4 +526,113 @@ describe("OpenAiCodexHandler native tool calls", () => {
 			}),
 		)
 	})
+
+	describe("createMessage abort signal", () => {
+		it("should bridge the external abortSignal into the internal AbortController", async () => {
+			vi.spyOn(openAiCodexOAuthManager, "getAccessToken").mockResolvedValue("test-token")
+			vi.spyOn(openAiCodexOAuthManager, "getAccountId").mockResolvedValue("acct_test")
+
+			// The mock transport pauses mid-flight until the request-local signal aborts
+			const mockCreate = vi.fn().mockImplementation(async (_body: unknown, init?: { signal?: AbortSignal }) => {
+				return {
+					async *[Symbol.asyncIterator]() {
+						yield { type: "response.text.delta", delta: "test" }
+						await new Promise<void>((resolve) => {
+							const signal = init?.signal
+							if (!signal || signal.aborted) {
+								resolve()
+								return
+							}
+							signal.addEventListener("abort", () => resolve(), { once: true })
+						})
+						yield {
+							type: "response.completed",
+							response: {
+								id: "resp_1",
+								status: "completed",
+								output: [{ type: "message", content: [{ type: "output_text", text: "test" }] }],
+								usage: { input_tokens: 1, output_tokens: 1 },
+							},
+						}
+						// Arrives after the abort resolves the pause: the loop guard must break before
+						// processing the completed event and this delta.
+						yield { type: "response.text.delta", delta: "post-abort" }
+					},
+				}
+			})
+			Object.assign(handler, {
+				client: {
+					responses: { create: mockCreate },
+				},
+			})
+
+			const controller = new AbortController()
+			const stream = handler.createMessage("system", [{ role: "user", content: "hello" }], {
+				taskId: "t",
+				abortSignal: controller.signal,
+			})
+
+			// Consume the stream (the mock transport pauses mid-flight)
+			const collected = collectStream(stream)
+
+			// Wait until the request has started; the bridge listener is registered before
+			// the SDK call, so aborting now lands mid-flight
+			await vi.waitFor(() => expect(mockCreate).toHaveBeenCalled())
+
+			// Abort the external signal mid-flight; the bridge must abort the request-local controller
+			controller.abort()
+
+			const chunks = await collected
+			// Exactly the pre-abort delta: the completed event and the post-abort delta only arrive
+			// once the abort resolves the transport's pause, so the loop guard must break before
+			// processing either.
+			expect(chunks).toEqual([{ type: "text", text: "test" }])
+
+			expect(mockCreate).toHaveBeenCalled()
+			const createCallArgs = mockCreate.mock.calls[0][1] as { signal?: AbortSignal }
+			// The captured (request-local) signal passed to the SDK must now be aborted
+			expect(createCallArgs.signal).toBeDefined()
+			expect(createCallArgs.signal).toBeInstanceOf(AbortSignal)
+			expect(createCallArgs.signal?.aborted).toBe(true)
+		})
+
+		it("should immediately abort when the external signal is already aborted", async () => {
+			vi.spyOn(openAiCodexOAuthManager, "getAccessToken").mockResolvedValue("test-token")
+			vi.spyOn(openAiCodexOAuthManager, "getAccountId").mockResolvedValue("acct_test")
+
+			const mockCreate = vi.fn().mockResolvedValue({
+				async *[Symbol.asyncIterator]() {
+					yield { type: "response.text.delta", delta: "test" }
+					yield {
+						type: "response.completed",
+						response: {
+							id: "resp_1",
+							status: "completed",
+							output: [{ type: "message", content: [{ type: "output_text", text: "test" }] }],
+							usage: { input_tokens: 1, output_tokens: 1 },
+						},
+					}
+				},
+			})
+			Object.assign(handler, {
+				client: {
+					responses: { create: mockCreate },
+				},
+			})
+
+			const controller = new AbortController()
+			controller.abort() // Pre-abort
+
+			const stream = handler.createMessage("system", [{ role: "user", content: "hello" }], {
+				taskId: "t",
+				abortSignal: controller.signal,
+			})
+
+			// A pre-aborted signal settles in the OAuth race before the SDK is reached: the abort
+			// contract must win over the request setup, so the stream rejects and the SDK is never
+			// called with a signal that is already aborted.
+			await expect(collectStream(stream)).rejects.toMatchObject({ name: "AbortError" })
+			expect(mockCreate).not.toHaveBeenCalled()
+		})
+	})
 })