llm-in-text/backend/tests/test_main_endpoints.py

import os
import sys
import base64
import asyncio
import pytest
from unittest.mock import MagicMock
from fastapi.testclient import TestClient

CURRENT_DIR = os.path.dirname(os.path.abspath(__file__))
BACKEND_DIR = os.path.abspath(os.path.join(CURRENT_DIR, ".."))
if BACKEND_DIR not in sys.path:
    sys.path.insert(0, BACKEND_DIR)

import main  # type: ignore

API_KEY = main.API_KEY
HEADERS = {"X-API-Key": API_KEY}


@pytest.fixture(autouse=True)
def _clear_active_completions():
    main.ACTIVE_COMPLETIONS.clear()
    yield
    main.ACTIVE_COMPLETIONS.clear()


class DummyRequest:
    def __init__(self, host=None, headers=None):
        class Client:
            pass
        self.client = Client() if host is not None else None
        if self.client is not None:
            self.client.host = host
        self.headers = headers or {}


def test_preview_short_text():
    assert main._preview("Hello") == "Hello"


def test_preview_long_text_truncated():
    long_text = "a" * 100
    assert main._preview(long_text) == long_text[:80] + "..."


def test_preview_none_input():
    assert main._preview(None) == ""


def test_preview_newlines_replaced():
    assert main._preview("line1\nline2") == "line1\\nline2"


def test_sanitize_markdown_strips_image_markdown():
    assert "![alt](image.png)" not in main._sanitize_converted_markdown(
        "text with image ![alt](image.png) end"
    )


def test_sanitize_markdown_strips_img_tag():
    assert "<img" not in main._sanitize_converted_markdown("<img src='x.png'/>")


def test_sanitize_markdown_collapse_newlines():
    assert main._sanitize_converted_markdown("a\n\n\nb\n\n\n\nc") == "a\n\nb\n\nc"


def test_sanitize_markdown_normalize_crlf():
    result = main._sanitize_converted_markdown("line1\r\nline2\r\n")
    assert "line1\nline2" in result
    assert "\r" not in result


def test_get_client_ip_from_host():
    req = DummyRequest(host="1.2.3.4", headers={})
    assert main.get_client_ip(req) == "1.2.3.4"


def test_get_client_ip_header_overrides_host():
    req = DummyRequest(host="1.2.3.4", headers={"X-Client-IP": "5.6.7.8"})
    assert main.get_client_ip(req) == "5.6.7.8"


def test_get_client_ip_when_client_missing():
    req = DummyRequest(host=None, headers={"X-Client-IP": "9.9.9.9"})
    req.client = None
    assert main.get_client_ip(req) == "9.9.9.9"


def test_post_completions_wrong_api_key_returns_401():
    client = TestClient(main.app)
    resp = client.post("/v1/completions", json={
        "prefix": "hello", "suffix": "", "languageId": "markdown",
        "model_thinking": "low", "privacy_mode": True,
    })
    assert resp.status_code == 401


def test_post_completions_privacy_mode(monkeypatch):
    async def fake_call(*args, **kwargs):
        return {"content": "done", "think": ""}
    monkeypatch.setattr(main, "call_ollama", fake_call)
    monkeypatch.setattr(main, "build_completion_prompts", lambda *a, **k: ("sys", "user"))
    monkeypatch.setattr(main, "prepare_prompt_context", lambda *a, **k: ("p", "s"))

    client = TestClient(main.app)
    resp = client.post("/v1/completions", headers=HEADERS, json={
        "prefix": "hello", "suffix": "", "languageId": "markdown",
        "model_thinking": "low", "privacy_mode": True,
    })
    assert resp.status_code == 200
    data = resp.json()
    assert data.get("content") == "done"


def test_post_ocr_mocked(monkeypatch):
    async def fake_ocr(*args, **kwargs):
        return "OCR result text"
    monkeypatch.setattr(main, "call_vlm_ocr", fake_ocr)

    client = TestClient(main.app)
    img_b64 = base64.b64encode(b"pretend image data").decode()
    resp = client.post("/v1/ocr", headers=HEADERS, json={
        "image": img_b64, "filename": "test.jpg", "language": "auto",
    })
    assert resp.status_code == 200
    j = resp.json()
    assert j["text"] == "OCR result text"
    assert j["filename"] == "test.jpg"


def test_post_ocr_invalid_base64_returns_500():
    client = TestClient(main.app)
    resp = client.post("/v1/ocr", headers=HEADERS, json={
        "image": "not-base64!!!", "filename": "test.jpg",
    })
    assert resp.status_code == 500


def test_post_convert_txt_returns_markdown():
    client = TestClient(main.app)
    content = base64.b64encode(b"hello world").decode()
    resp = client.post("/v1/convert", headers=HEADERS, json={
        "file": content, "filename": "sample.txt",
    })
    assert resp.status_code == 200
    j = resp.json()
    assert j["markdown"] == "hello world"
    assert j["filename"] == "sample.txt"


def test_post_convert_unsupported_extension_returns_500():
    client = TestClient(main.app)
    content = base64.b64encode(b"data").decode()
    resp = client.post("/v1/convert", headers=HEADERS, json={
        "file": content, "filename": "sample.xlsx",
    })
    assert resp.status_code == 500
    assert "仅支持" in resp.json()["error"]


def test_post_convert_docx_with_mocked_markitdown(monkeypatch):
    class FakeResult:
        text_content = "markdown from docx"
    class FakeMD:
        def convert(self, path):
            return FakeResult()
    monkeypatch.setattr(main, "_get_markitdown", lambda: FakeMD())

    client = TestClient(main.app)
    content = base64.b64encode(b"docx content").decode()
    resp = client.post("/v1/convert", headers=HEADERS, json={
        "file": content, "filename": "sample.docx",
    })
    assert resp.status_code == 200
    j = resp.json()
    assert j["markdown"] == "markdown from docx"


def test_post_cancel_non_existent_returns_not_found():
    client = TestClient(main.app)
    resp = client.post("/v1/completions/cancel", headers=HEADERS, json={
        "request_id": "non-existent", "reason": "abort",
    })
    assert resp.status_code == 200
    data = resp.json()
    assert data["cancelled"] is False
    assert data["status"] == "not_found"


def test_post_cancel_wrong_api_key_returns_401():
    client = TestClient(main.app)
    resp = client.post("/v1/completions/cancel", json={
        "request_id": "id", "reason": "abort",
    })
    assert resp.status_code == 401


def test_post_cancel_already_done(monkeypatch):
    main.ACTIVE_COMPLETIONS.clear()
    # Create a mock task that appears done
    mock_task = MagicMock()
    mock_task.done.return_value = True
    mock_task.cancel = MagicMock()
    main.ACTIVE_COMPLETIONS["done-id"] = mock_task

    client = TestClient(main.app)
    resp = client.post("/v1/completions/cancel", headers=HEADERS, json={
        "request_id": "done-id", "reason": "abort",
    })
    assert resp.status_code == 200
    data = resp.json()
    assert data["cancelled"] is False
    assert data["status"] == "already_done"
    main.ACTIVE_COMPLETIONS.clear()