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48f7143 2c75133 48f7143 2c75133 48f7143 441ce03 e483e90 48f7143 2c75133 48f7143 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 | import os
from pathlib import Path
from tempfile import NamedTemporaryFile
import pytest
from pydantic import FileUrl
from fastmcp.exceptions import ResourceError
from fastmcp.resources import FileResource
@pytest.fixture
def temp_file():
"""Create a temporary file for testing.
File is automatically cleaned up after the test if it still exists.
"""
content = "test content"
with NamedTemporaryFile(mode="w", delete=False) as f:
f.write(content)
path = Path(f.name).resolve()
yield path
try:
path.unlink()
except FileNotFoundError:
pass # File was already deleted by the test
class TestFileResource:
"""Test FileResource functionality."""
def test_file_resource_creation(self, temp_file: Path):
"""Test creating a FileResource."""
resource = FileResource(
uri=FileUrl(temp_file.as_uri()),
name="test",
description="test file",
path=temp_file,
)
assert str(resource.uri) == temp_file.as_uri()
assert resource.name == "test"
assert resource.description == "test file"
assert resource.mime_type == "text/plain" # default
assert resource.path == temp_file
assert resource.is_binary is False # default
def test_file_resource_str_path_conversion(self, temp_file: Path):
"""Test FileResource handles string paths."""
resource = FileResource(
uri=FileUrl(f"file://{temp_file}"),
name="test",
path=Path(str(temp_file)),
)
assert isinstance(resource.path, Path)
assert resource.path.is_absolute()
async def test_read_text_file(self, temp_file: Path):
"""Test reading a text file."""
resource = FileResource(
uri=FileUrl(f"file://{temp_file}"),
name="test",
path=temp_file,
)
content = await resource.read()
assert content == "test content"
assert resource.mime_type == "text/plain"
async def test_read_binary_file(self, temp_file: Path):
"""Test reading a file as binary."""
resource = FileResource(
uri=FileUrl(f"file://{temp_file}"),
name="test",
path=temp_file,
is_binary=True,
)
content = await resource.read()
assert content == b"test content"
def test_relative_path_error(self):
"""Test error on relative path."""
with pytest.raises(ValueError, match="Path must be absolute"):
FileResource(
uri=FileUrl("file:///test.txt"),
name="test",
path=Path("test.txt"),
)
async def test_missing_file_error(self, temp_file: Path):
"""Test error when file doesn't exist."""
# Create path to non-existent file
missing = temp_file.parent / "missing.txt"
resource = FileResource(
uri=FileUrl("file:///missing.txt"),
name="test",
path=missing,
)
with pytest.raises(ResourceError, match="Error reading file"):
await resource.read()
@pytest.mark.skipif(
os.name == "nt" or (hasattr(os, "getuid") and os.getuid() == 0),
reason="File permissions behave differently on Windows or when running as root",
)
async def test_permission_error(self, temp_file: Path):
"""Test reading a file without permissions."""
temp_file.chmod(0o000) # Remove all permissions
try:
resource = FileResource(
uri=FileUrl(temp_file.as_uri()),
name="test",
path=temp_file,
)
with pytest.raises(ResourceError, match="Error reading file"):
await resource.read()
finally:
temp_file.chmod(0o644) # Restore permissions
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