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gh-christianlouis-docuelevate/tests/test_file_upload.py
T
copilot-swe-agent[bot] 0422c705f5 fix(tests): fix Celery task mocking in file upload tests
Patch entire task objects instead of just .delay method to properly
intercept Celery task calls in app.api.files module. This fixes 7
failing tests that were getting 'Expected delay to have been called
once. Called 0 times.' errors.

Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>
2026-02-08 16:57:38 +00:00

390 lines
15 KiB
Python

"""
Tests for file upload functionality via the ui-upload endpoint.
Tests cover:
- Valid file uploads (PDF, images, office documents, text files)
- Invalid file types
- File size validation
- Malformed files
- Security issues (path traversal)
- Error handling
"""
import io
import os
import pytest
from unittest.mock import patch, MagicMock, Mock
from fastapi.testclient import TestClient
# Fixture to mock all celery tasks at module level
@pytest.fixture(autouse=True)
def mock_celery_tasks():
"""Mock all Celery tasks to prevent execution."""
# Patch the entire task object where it's used (in app.api.files)
with patch("app.api.files.process_document") as mock_process_task, \
patch("app.api.files.convert_to_pdf") as mock_convert_task:
# Setup default return values for .delay()
mock_task = MagicMock()
mock_task.id = "test-task-id-123"
mock_process_task.delay.return_value = mock_task
mock_convert_task.delay.return_value = mock_task
yield {
"process_document": mock_process_task.delay,
"convert_to_pdf": mock_convert_task.delay
}
@pytest.mark.integration
class TestValidFileUploads:
"""Tests for successful file uploads with various valid file types."""
def test_upload_valid_pdf(self, client: TestClient, sample_pdf_path: str, mock_celery_tasks):
"""Test uploading a valid PDF file."""
with open(sample_pdf_path, "rb") as f:
response = client.post(
"/api/ui-upload",
files={"file": ("document.pdf", f, "application/pdf")}
)
assert response.status_code == 200
data = response.json()
# Verify response structure
assert "task_id" in data
assert "status" in data
assert "original_filename" in data
assert "stored_filename" in data
# Verify response values
assert data["status"] == "queued"
assert data["original_filename"] == "document.pdf"
assert data["stored_filename"].endswith(".pdf")
# Verify the processing task was called
mock_celery_tasks["process_document"].assert_called_once()
call_args = mock_celery_tasks["process_document"].call_args
assert call_args.kwargs["original_filename"] == "document.pdf"
def test_upload_valid_text_file(self, client: TestClient, mock_celery_tasks):
"""Test uploading a valid text file."""
text_content = b"This is a test text file.\nWith multiple lines."
response = client.post(
"/api/ui-upload",
files={"file": ("document.txt", io.BytesIO(text_content), "text/plain")}
)
assert response.status_code == 200
data = response.json()
assert data["original_filename"] == "document.txt"
assert data["stored_filename"].endswith(".txt")
# Text files should be converted to PDF
mock_celery_tasks["convert_to_pdf"].assert_called_once()
def test_upload_valid_image_jpeg(self, client: TestClient, mock_celery_tasks):
"""Test uploading a valid JPEG image."""
# Create a minimal valid JPEG
jpeg_content = (
b"\xff\xd8\xff\xe0\x00\x10JFIF\x00\x01\x01\x00\x00\x01\x00\x01\x00\x00"
b"\xff\xdb\x00C\x00\x08\x06\x06\x07\x06\x05\x08\x07\x07\x07\t\t\x08\n"
b"\xff\xd9"
)
response = client.post(
"/api/ui-upload",
files={"file": ("image.jpg", io.BytesIO(jpeg_content), "image/jpeg")}
)
assert response.status_code == 200
data = response.json()
assert data["original_filename"] == "image.jpg"
# Images should be converted to PDF
mock_celery_tasks["convert_to_pdf"].assert_called_once()
def test_upload_valid_png_image(self, client: TestClient, mock_celery_tasks):
"""Test uploading a valid PNG image."""
# Create a minimal valid PNG (1x1 transparent pixel)
png_content = (
b"\x89PNG\r\n\x1a\n\x00\x00\x00\rIHDR\x00\x00\x00\x01\x00\x00\x00\x01"
b"\x08\x06\x00\x00\x00\x1f\x15\xc4\x89\x00\x00\x00\nIDATx\x9cc\x00\x01"
b"\x00\x00\x05\x00\x01\r\n-\xb4\x00\x00\x00\x00IEND\xaeB`\x82"
)
response = client.post(
"/api/ui-upload",
files={"file": ("screenshot.png", io.BytesIO(png_content), "image/png")}
)
assert response.status_code == 200
data = response.json()
assert data["original_filename"] == "screenshot.png"
assert data["stored_filename"].endswith(".png")
mock_celery_tasks["convert_to_pdf"].assert_called_once()
def test_upload_office_document_docx(self, client: TestClient, mock_celery_tasks):
"""Test uploading a Word document."""
# Create minimal DOCX content (ZIP file with proper structure)
docx_content = (
b"PK\x03\x04\x14\x00\x00\x00\x08\x00" + b"\x00" * 50
)
response = client.post(
"/api/ui-upload",
files={"file": (
"report.docx",
io.BytesIO(docx_content),
"application/vnd.openxmlformats-officedocument.wordprocessingml.document"
)}
)
assert response.status_code == 200
data = response.json()
assert data["original_filename"] == "report.docx"
assert data["stored_filename"].endswith(".docx")
# Office documents should be converted to PDF
mock_celery_tasks["convert_to_pdf"].assert_called_once()
def test_upload_csv_file(self, client: TestClient, mock_celery_tasks):
"""Test uploading a CSV file."""
csv_content = b"name,age,city\nJohn,30,NYC\nJane,25,LA\n"
response = client.post(
"/api/ui-upload",
files={"file": ("data.csv", io.BytesIO(csv_content), "text/csv")}
)
assert response.status_code == 200
data = response.json()
assert data["original_filename"] == "data.csv"
mock_celery_tasks["convert_to_pdf"].assert_called_once()
@pytest.mark.integration
class TestInvalidFileUploads:
"""Tests for handling invalid or problematic file uploads."""
def test_upload_file_too_large(self, client: TestClient):
"""Test that files over 500MB are rejected."""
# Create a large file content (mock it to avoid memory issues)
large_content = b"x" * 1024 # 1KB for testing
with patch("os.path.getsize") as mock_getsize:
# Mock the file size to be over 500MB
mock_getsize.return_value = 501 * 1024 * 1024 # 501MB
response = client.post(
"/api/ui-upload",
files={"file": ("huge.pdf", io.BytesIO(large_content), "application/pdf")}
)
assert response.status_code == 413 # Request Entity Too Large
assert "too large" in response.json()["detail"].lower()
def test_upload_executable_file(self, client: TestClient, mock_celery_tasks):
"""Test that executable files are handled (attempted conversion)."""
exe_content = b"MZ\x90\x00" # PE header
response = client.post(
"/api/ui-upload",
files={"file": ("program.exe", io.BytesIO(exe_content), "application/x-msdownload")}
)
# Per the code, unsupported types get a warning but are still processed
assert response.status_code == 200
# The system attempts conversion even for unsupported types
mock_celery_tasks["convert_to_pdf"].assert_called_once()
def test_upload_empty_file(self, client: TestClient, mock_celery_tasks):
"""Test uploading an empty file."""
response = client.post(
"/api/ui-upload",
files={"file": ("empty.txt", io.BytesIO(b""), "text/plain")}
)
# Empty files are accepted and queued for processing
assert response.status_code == 200
data = response.json()
assert data["original_filename"] == "empty.txt"
def test_upload_without_file(self, client: TestClient):
"""Test POST request without a file."""
response = client.post("/api/ui-upload")
# FastAPI should return a validation error
assert response.status_code == 422 # Unprocessable Entity
@pytest.mark.integration
@pytest.mark.security
class TestUploadSecurity:
"""Tests for security aspects of file uploads."""
def test_path_traversal_prevention_dotdot(self, client: TestClient, mock_celery_tasks):
"""Test that path traversal attempts are prevented."""
# Try to upload a file with path traversal in filename
malicious_filename = "../../etc/passwd.pdf"
pdf_content = b"%PDF-1.4\n%EOF"
response = client.post(
"/api/ui-upload",
files={"file": (malicious_filename, io.BytesIO(pdf_content), "application/pdf")}
)
assert response.status_code == 200
data = response.json()
# The original filename should be sanitized (only basename)
assert data["original_filename"] == "passwd.pdf"
assert ".." not in data["stored_filename"]
assert "/" not in data["stored_filename"]
def test_path_traversal_prevention_absolute(self, client: TestClient, mock_celery_tasks):
"""Test that absolute path attempts are prevented."""
malicious_filename = "/etc/shadow.pdf"
pdf_content = b"%PDF-1.4\n%EOF"
response = client.post(
"/api/ui-upload",
files={"file": (malicious_filename, io.BytesIO(pdf_content), "application/pdf")}
)
assert response.status_code == 200
data = response.json()
# Only the basename should be kept
assert data["original_filename"] == "shadow.pdf"
assert not data["stored_filename"].startswith("/")
def test_filename_with_special_characters(self, client: TestClient, mock_celery_tasks):
"""Test handling of filenames with special characters."""
special_filename = "file name with spaces & special!@#chars.pdf"
pdf_content = b"%PDF-1.4\n%EOF"
response = client.post(
"/api/ui-upload",
files={"file": (special_filename, io.BytesIO(pdf_content), "application/pdf")}
)
assert response.status_code == 200
data = response.json()
# Original filename should be preserved (sanitized by basename)
assert data["original_filename"] == special_filename
# Stored filename should have UUID and extension
assert data["stored_filename"].endswith(".pdf")
@pytest.mark.integration
class TestUploadErrorHandling:
"""Tests for error handling during file uploads."""
def test_upload_disk_write_failure(self, client: TestClient):
"""Test handling of disk write failures."""
with patch("builtins.open", side_effect=IOError("Disk full")):
pdf_content = b"%PDF-1.4\n%EOF"
response = client.post(
"/api/ui-upload",
files={"file": ("test.pdf", io.BytesIO(pdf_content), "application/pdf")}
)
assert response.status_code == 500
assert "Failed to save file" in response.json()["detail"]
def test_upload_celery_task_failure(self, client: TestClient, mock_celery_tasks):
"""Test handling when Celery task queueing fails."""
mock_celery_tasks["process_document"].side_effect = Exception("Celery connection failed")
pdf_content = b"%PDF-1.4\n%EOF"
# The endpoint should still handle the error gracefully
# In this case, the exception will propagate
with pytest.raises(Exception):
client.post(
"/api/ui-upload",
files={"file": ("test.pdf", io.BytesIO(pdf_content), "application/pdf")}
)
@pytest.mark.integration
class TestUploadFilenameHandling:
"""Tests for filename handling and UUID generation."""
def test_unique_filename_generation(self, client: TestClient, mock_celery_tasks):
"""Test that uploaded files get unique UUIDs."""
pdf_content = b"%PDF-1.4\n%EOF"
# Upload same file twice
response1 = client.post(
"/api/ui-upload",
files={"file": ("same.pdf", io.BytesIO(pdf_content), "application/pdf")}
)
response2 = client.post(
"/api/ui-upload",
files={"file": ("same.pdf", io.BytesIO(pdf_content), "application/pdf")}
)
assert response1.status_code == 200
assert response2.status_code == 200
data1 = response1.json()
data2 = response2.json()
# Original filenames should be the same
assert data1["original_filename"] == data2["original_filename"] == "same.pdf"
# But stored filenames should be different (unique UUIDs)
assert data1["stored_filename"] != data2["stored_filename"]
def test_filename_without_extension(self, client: TestClient, mock_celery_tasks):
"""Test handling of files without extensions."""
content = b"Some content"
response = client.post(
"/api/ui-upload",
files={"file": ("NOEXTENSION", io.BytesIO(content), "application/octet-stream")}
)
assert response.status_code == 200
data = response.json()
assert data["original_filename"] == "NOEXTENSION"
# Stored filename should be just the UUID without extension
assert "." not in data["stored_filename"] or data["stored_filename"].count(".") == 0
@pytest.mark.integration
class TestUploadMimeTypeDetection:
"""Tests for MIME type detection and routing."""
def test_pdf_by_extension_only(self, client: TestClient, mock_celery_tasks):
"""Test PDF detection by file extension when MIME type is generic."""
pdf_content = b"%PDF-1.4\n%EOF"
response = client.post(
"/api/ui-upload",
files={"file": ("doc.pdf", io.BytesIO(pdf_content), "application/octet-stream")}
)
assert response.status_code == 200
# Should route to process_document (not convert_to_pdf) based on extension
mock_celery_tasks["process_document"].assert_called_once()
def test_image_by_extension(self, client: TestClient, mock_celery_tasks):
"""Test image detection by file extension."""
# Generic binary content with image extension
image_content = b"\x00\x01\x02\x03"
response = client.post(
"/api/ui-upload",
files={"file": ("photo.jpg", io.BytesIO(image_content), "application/octet-stream")}
)
assert response.status_code == 200
# Should route to convert_to_pdf based on .jpg extension
mock_celery_tasks["convert_to_pdf"].assert_called_once()