Files
9router/tests/unit/sse-to-json-claude-shape.test.js
T
asepharyana 3de32a10f3 fix(translator): shape Anthropic non-stream responses from forced-streaming providers
The non-streaming Anthropic path leaked OpenAI chat.completion bodies to
Claude clients when the upstream provider forces streaming (forced
SSE->JSON path): parseSSEToOpenAIResponse yields choices[] which Claude
Code cannot parse. Convert to Claude Messages shape for sourceFormat
CLAUDE in sseToJsonHandler.

Shared toClaudeMessageShape/openAICompletionToClaudeMessage moved to
translator/concerns/claudeShape.js to avoid circular import between
nonStreamingHandler and sseToJsonHandler. 5 new tests: sse-to-json
reassembly + Claude guard, plus existing anthropic-nonstream-shape
updated to import from the concern.
2026-09-23 15:36:24 +07:00

54 lines
3.4 KiB
JavaScript

import { describe, expect, it } from "vitest";
const { parseSSEToOpenAIResponse } = await import("../../open-sse/handlers/chatCore/sseToJsonHandler.js");
const { toClaudeMessageShape } = await import("../../open-sse/translator/concerns/claudeShape.js");
// SSE fixture of an OpenAI chat streaming provider (eg big-pickle forced
// streaming): text deltas + reasoning + tool_calls + usage.
const OPENAI_SSE = [
"data: {\"id\":\"chatcmpl-abc\",\"object\":\"chat.completion.chunk\",\"created\":1000,\"model\":\"big-pickle\",\"choices\":[{\"index\":0,\"delta\":{\"role\":\"assistant\",\"content\":\"\",\"reasoning_content\":\"let me think\"},\"finish_reason\":null}]}",
"data: {\"id\":\"chatcmpl-abc\",\"object\":\"chat.completion.chunk\",\"created\":1000,\"model\":\"big-pickle\",\"choices\":[{\"index\":0,\"delta\":{\"content\":\"Hel\"},\"finish_reason\":null}]}",
"data: {\"id\":\"chatcmpl-abc\",\"object\":\"chat.completion.chunk\",\"created\":1000,\"model\":\"big-pickle\",\"choices\":[{\"index\":0,\"delta\":{\"content\":\"lo\"},\"finish_reason\":null}]}",
"data: {\"id\":\"chatcmpl-abc\",\"object\":\"chat.completion.chunk\",\"created\":1000,\"model\":\"big-pickle\",\"choices\":[{\"index\":0,\"delta\":{\"tool_calls\":[{\"index\":0,\"id\":\"call_1\",\"function\":{\"name\":\"get_weather\",\"arguments\":\"{\\\"city\\\":\\\"Jakarta\\\"}\"}}]},\"finish_reason\":null}]}",
"data: {\"id\":\"chatcmpl-abc\",\"object\":\"chat.completion.chunk\",\"created\":1000,\"model\":\"big-pickle\",\"choices\":[{\"index\":0,\"delta\":{},\"finish_reason\":\"tool_calls\"}],\"usage\":{\"prompt_tokens\":10,\"completion_tokens\":20,\"total_tokens\":30}}",
"data: [DONE]"
].join("\n");
describe("parseSSEToOpenAIResponse (forced streaming → JSON)", () => {
it("reassembles content, reasoning, tool_calls, finish_reason, usage", () => {
const parsed = parseSSEToOpenAIResponse(OPENAI_SSE, "big-pickle");
expect(parsed.object).toBe("chat.completion");
expect(parsed.choices[0].message.content).toBe("Hello");
expect(parsed.choices[0].message.reasoning_content).toBe("let me think");
expect(parsed.choices[0].message.tool_calls).toHaveLength(1);
expect(parsed.choices[0].message.tool_calls[0].function.name).toBe("get_weather");
expect(parsed.choices[0].message.tool_calls[0].function.arguments).toContain("Jakarta");
expect(parsed.choices[0].finish_reason).toBe("tool_calls");
expect(parsed.usage.total_tokens).toBe(30);
});
it("returns null for empty / malformed SSE", () => {
expect(parseSSEToOpenAIResponse("", "m")).toBeNull();
expect(parseSSEToOpenAIResponse("data: [DONE]", "m")).toBeNull();
});
});
describe("sseToJson Anthropic guard (sourceFormat=CLAUDE)", () => {
it("converts parsed OpenAI body to Claude message shape", () => {
const parsed = parseSSEToOpenAIResponse(OPENAI_SSE, "big-pickle");
const out = toClaudeMessageShape(parsed);
expect(out.type).toBe("message");
expect(out.role).toBe("assistant");
expect(Array.isArray(out.content)).toBe(true);
expect(out.content[0].type).toBe("thinking");
expect(out.content[0].thinking).toBe("let me think");
expect(out.content[1].type).toBe("text");
expect(out.content[1].text).toBe("Hello");
expect(out.content[2].type).toBe("tool_use");
expect(out.content[2].name).toBe("get_weather");
expect(out.stop_reason).toBe("tool_use");
expect(out.usage.input_tokens).toBe(10);
expect(out.usage.output_tokens).toBe(20);
});
});