OmniRoute/tests/unit/translator-openai-responses-req.test.mjs

import test from "node:test";
import assert from "node:assert/strict";

const { openaiResponsesToOpenAIRequest, openaiToOpenAIResponsesRequest } =
  await import("../../open-sse/translator/request/openai-responses.ts");

test("Responses -> Chat converts instructions, inputs, function calls, outputs, tools and tool_choice", () => {
  const result = openaiResponsesToOpenAIRequest(
    "gpt-4o",
    {
      instructions: "Rules",
      input: [
        {
          type: "message",
          role: "user",
          content: [
            { type: "input_text", text: "Hello" },
            { type: "input_image", image_url: "https://example.com/cat.png", detail: "high" },
            { type: "input_file", file_data: "abc", filename: "doc.txt" },
          ],
        },
        {
          type: "function_call",
          call_id: "call_1",
          name: "read_file",
          arguments: { path: "/tmp/a" },
        },
        {
          type: "function_call_output",
          call_id: "call_1",
          output: { ok: true },
        },
      ],
      tools: [
        {
          type: "function",
          name: "read_file",
          description: "Read",
          parameters: { type: "object" },
        },
      ],
      tool_choice: { type: "function", name: "read_file" },
    },
    false,
    null
  );

  assert.deepEqual(result.messages, [
    { role: "system", content: "Rules" },
    {
      role: "user",
      content: [
        { type: "text", text: "Hello" },
        { type: "image_url", image_url: { url: "https://example.com/cat.png", detail: "high" } },
        { type: "file", file: { file_data: "abc", filename: "doc.txt" } },
      ],
    },
    {
      role: "assistant",
      content: null,
      tool_calls: [
        {
          id: "call_1",
          type: "function",
          function: { name: "read_file", arguments: '{"path":"/tmp/a"}' },
        },
      ],
    },
    { role: "tool", tool_call_id: "call_1", content: '{"ok":true}' },
  ]);
  assert.deepEqual(result.tools, [
    {
      type: "function",
      function: {
        name: "read_file",
        description: "Read",
        parameters: { type: "object" },
        strict: undefined,
      },
    },
  ]);
  assert.deepEqual(result.tool_choice, { type: "function", function: { name: "read_file" } });
});

test("Responses -> Chat filters orphan tool outputs and supports role-based message items", () => {
  const result = openaiResponsesToOpenAIRequest(
    "gpt-4o",
    {
      input: [
        { role: "user", content: [{ type: "input_text", text: "Hello" }] },
        { type: "function_call_output", call_id: "orphan", output: "skip" },
        { type: "function_call", call_id: "call_2", name: "search", arguments: "{}" },
        { type: "function_call_output", call_id: "call_2", output: "found" },
      ],
    },
    false,
    null
  );

  assert.equal(result.messages.length, 3);
  assert.equal(result.messages[0].role, "user");
  assert.equal(result.messages[1].tool_calls[0].id, "call_2");
  assert.deepEqual(result.messages[2], {
    role: "tool",
    tool_call_id: "call_2",
    content: "found",
  });
});

test("Responses -> Chat rejects unsupported built-in tools and background mode", () => {
  assert.throws(
    () =>
      openaiResponsesToOpenAIRequest(
        "gpt-4o",
        {
          input: [],
          tools: [{ type: "web_search_preview", name: "search" }],
        },
        false,
        null
      ),
    (error) => error.statusCode === 400 && error.errorType === "unsupported_feature"
  );

  assert.throws(
    () =>
      openaiResponsesToOpenAIRequest(
        "gpt-4o",
        {
          input: [],
          background: true,
        },
        false,
        null
      ),
    (error) => error.statusCode === 400 && error.errorType === "unsupported_feature"
  );
});

test("Chat -> Responses converts messages, tool calls, tool outputs, tools and pass-through params", () => {
  const result = openaiToOpenAIResponsesRequest(
    "gpt-4o",
    {
      messages: [
        { role: "system", content: "Rules" },
        {
          role: "user",
          content: [
            { type: "text", text: "Hello" },
            {
              type: "image_url",
              image_url: { url: "https://example.com/cat.png", detail: "high" },
            },
            { type: "file", file: { file_data: "abc", filename: "doc.txt" } },
          ],
        },
        {
          role: "assistant",
          content: "Done",
          tool_calls: [
            {
              id: "call_1",
              type: "function",
              function: { name: "read_file", arguments: '{"path":"/tmp/a"}' },
            },
          ],
        },
        { role: "tool", tool_call_id: "call_1", content: [{ type: "text", text: "ok" }] },
      ],
      tools: [
        {
          type: "function",
          function: {
            name: "read_file",
            description: "Read",
            parameters: { type: "object" },
            strict: true,
          },
        },
      ],
      tool_choice: { type: "function", function: { name: "read_file" } },
      temperature: 0.2,
      max_tokens: 100,
      top_p: 0.9,
    },
    false,
    null
  );

  assert.equal(result.instructions, "Rules");
  assert.equal(result.stream, true);
  assert.equal(result.store, false);
  assert.deepEqual(result.input, [
    {
      type: "message",
      role: "user",
      content: [
        { type: "input_text", text: "Hello" },
        { type: "input_image", image_url: "https://example.com/cat.png", detail: "high" },
        { type: "input_file", file_data: "abc", filename: "doc.txt" },
      ],
    },
    {
      type: "message",
      role: "assistant",
      content: [{ type: "output_text", text: "Done" }],
    },
    {
      type: "function_call",
      call_id: "call_1",
      name: "read_file",
      arguments: '{"path":"/tmp/a"}',
    },
    {
      type: "function_call_output",
      call_id: "call_1",
      output: [{ type: "input_text", text: "ok" }],
    },
  ]);
  assert.deepEqual(result.tools, [
    {
      type: "function",
      name: "read_file",
      description: "Read",
      parameters: { type: "object" },
      strict: true,
    },
  ]);
  assert.deepEqual(result.tool_choice, { type: "function", name: "read_file" });
  assert.equal(result.temperature, 0.2);
  assert.equal(result.max_tokens, 100);
  assert.equal(result.top_p, 0.9);
});

test("Chat -> Responses filters orphan function_call_output items and leaves empty instructions when absent", () => {
  const result = openaiToOpenAIResponsesRequest(
    "gpt-4o",
    {
      messages: [
        { role: "user", content: "Hello" },
        { role: "tool", tool_call_id: "orphan", content: "skip" },
        {
          role: "assistant",
          tool_calls: [
            {
              id: "call_2",
              type: "function",
              function: { name: "search", arguments: "{}" },
            },
          ],
        },
        { role: "tool", tool_call_id: "call_2", content: "found" },
      ],
    },
    false,
    null
  );

  assert.equal(result.instructions, "");
  assert.equal(
    result.input.some((item) => item.call_id === "orphan"),
    false
  );
  assert.equal(result.input.filter((item) => item.type === "function_call_output").length, 1);
  assert.equal(result.input.find((item) => item.type === "function_call_output").call_id, "call_2");
});