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from __future__ import annotations
import pytest
from urllib3.fields import RequestField
from urllib3.filepost import _TYPE_FIELDS, encode_multipart_formdata
BOUNDARY = "!! test boundary !!"
BOUNDARY_BYTES = BOUNDARY.encode()
class TestMultipartEncoding:
@pytest.mark.parametrize(
"fields", [dict(k="v", k2="v2"), [("k", "v"), ("k2", "v2")]]
)
def test_input_datastructures(self, fields: _TYPE_FIELDS) -> None:
encoded, _ = encode_multipart_formdata(fields, boundary=BOUNDARY)
assert encoded.count(BOUNDARY_BYTES) == 3
@pytest.mark.parametrize(
"fields",
[
[("k", "v"), ("k2", "v2")],
[("k", b"v"), ("k2", b"v2")],
[("k", b"v"), ("k2", "v2")],
],
)
def test_field_encoding(self, fields: _TYPE_FIELDS) -> None:
encoded, content_type = encode_multipart_formdata(fields, boundary=BOUNDARY)
expected = (
b"--" + BOUNDARY_BYTES + b"\r\n"
b'Content-Disposition: form-data; name="k"\r\n'
b"\r\n"
b"v\r\n"
b"--" + BOUNDARY_BYTES + b"\r\n"
b'Content-Disposition: form-data; name="k2"\r\n'
b"\r\n"
b"v2\r\n"
b"--" + BOUNDARY_BYTES + b"--\r\n"
)
assert encoded == expected
assert content_type == "multipart/form-data; boundary=" + str(BOUNDARY)
def test_filename(self) -> None:
fields = [("k", ("somename", b"v"))]
encoded, content_type = encode_multipart_formdata(fields, boundary=BOUNDARY)
expected = (
b"--" + BOUNDARY_BYTES + b"\r\n"
b'Content-Disposition: form-data; name="k"; filename="somename"\r\n'
b"Content-Type: application/octet-stream\r\n"
b"\r\n"
b"v\r\n"
b"--" + BOUNDARY_BYTES + b"--\r\n"
)
assert encoded == expected
assert content_type == "multipart/form-data; boundary=" + str(BOUNDARY)
def test_textplain(self) -> None:
fields = [("k", ("somefile.txt", b"v"))]
encoded, content_type = encode_multipart_formdata(fields, boundary=BOUNDARY)
expected = (
b"--" + BOUNDARY_BYTES + b"\r\n"
b'Content-Disposition: form-data; name="k"; filename="somefile.txt"\r\n'
b"Content-Type: text/plain\r\n"
b"\r\n"
b"v\r\n"
b"--" + BOUNDARY_BYTES + b"--\r\n"
)
assert encoded == expected
assert content_type == "multipart/form-data; boundary=" + str(BOUNDARY)
def test_explicit(self) -> None:
fields = [("k", ("somefile.txt", b"v", "image/jpeg"))]
encoded, content_type = encode_multipart_formdata(fields, boundary=BOUNDARY)
expected = (
b"--" + BOUNDARY_BYTES + b"\r\n"
b'Content-Disposition: form-data; name="k"; filename="somefile.txt"\r\n'
b"Content-Type: image/jpeg\r\n"
b"\r\n"
b"v\r\n"
b"--" + BOUNDARY_BYTES + b"--\r\n"
)
assert encoded == expected
assert content_type == "multipart/form-data; boundary=" + str(BOUNDARY)
def test_request_fields(self) -> None:
fields = [
RequestField(
"k",
b"v",
filename="somefile.txt",
headers={"Content-Type": "image/jpeg"},
)
]
encoded, content_type = encode_multipart_formdata(fields, boundary=BOUNDARY)
expected = (
b"--" + BOUNDARY_BYTES + b"\r\n"
b"Content-Type: image/jpeg\r\n"
b"\r\n"
b"v\r\n"
b"--" + BOUNDARY_BYTES + b"--\r\n"
)
assert encoded == expected