takahe/hatchway/tests/test_view.py

245 lines
6.6 KiB
Python

import json
import pytest
from django.core import files
from django.core.files.uploadedfile import SimpleUploadedFile
from django.http import QueryDict
from django.test import RequestFactory
from django.test.client import MULTIPART_CONTENT
from pydantic import BaseModel
from hatchway import ApiError, Body, QueryOrBody, api_view
from hatchway.view import ApiView
def test_basic_view():
"""
Tests that a view with simple types works correctly
"""
@api_view
def test_view(
request,
a: int,
b: QueryOrBody[int | None] = None,
c: str = "x",
) -> str:
if b is None:
return c * a
else:
return c * (a - b)
# Call it with a few different patterns to verify it's type coercing right
factory = RequestFactory()
# Implicit query param
response = test_view(factory.get("/test/?a=4"))
assert json.loads(response.content) == "xxxx"
# QueryOrBody pulling from query
response = test_view(factory.get("/test/?a=4&b=2"))
assert json.loads(response.content) == "xx"
# QueryOrBody pulling from formdata body
response = test_view(factory.post("/test/?a=4", {"b": "3"}))
assert json.loads(response.content) == "x"
# QueryOrBody pulling from JSON body
response = test_view(
factory.post(
"/test/?a=4", json.dumps({"b": 3}), content_type="application/json"
)
)
assert json.loads(response.content) == "x"
# Implicit Query not pulling from body
with pytest.raises(TypeError):
test_view(factory.post("/test/", {"a": 4, "b": 3}))
def test_body_direct():
"""
Tests that a Pydantic model with BodyDirect gets its fields from the top level
"""
class TestModel(BaseModel):
number: int
name: str
@api_view
def test_view(request, data: TestModel) -> int:
return data.number
factory = RequestFactory()
# formdata version
response = test_view(factory.post("/test/", {"number": "123", "name": "Andrew"}))
assert json.loads(response.content) == 123
# JSON body version
response = test_view(
factory.post(
"/test/",
json.dumps({"number": "123", "name": "Andrew"}),
content_type="application/json",
)
)
assert json.loads(response.content) == 123
def test_list_response():
"""
Tests that a view with a list response type works correctly with both
dicts and pydantic model instances.
"""
class TestModel(BaseModel):
number: int
name: str
@api_view
def test_view_dict(request) -> list[TestModel]:
return [
{"name": "Andrew", "number": 1}, # type:ignore
{"name": "Alice", "number": 0}, # type:ignore
]
@api_view
def test_view_model(request) -> list[TestModel]:
return [TestModel(name="Andrew", number=1), TestModel(name="Alice", number=0)]
response = test_view_dict(RequestFactory().get("/test/"))
assert json.loads(response.content) == [
{"name": "Andrew", "number": 1},
{"name": "Alice", "number": 0},
]
response = test_view_model(RequestFactory().get("/test/"))
assert json.loads(response.content) == [
{"name": "Andrew", "number": 1},
{"name": "Alice", "number": 0},
]
def test_patch_body():
"""
Tests that PATCH also gets its body parsed
"""
@api_view.patch
def test_view(request, a: Body[int]):
return a
factory = RequestFactory()
response = test_view(
factory.patch(
"/test/",
content_type=MULTIPART_CONTENT,
data=factory._encode_data({"a": "42"}, MULTIPART_CONTENT),
)
)
assert json.loads(response.content) == 42
def test_file_body():
"""
Tests that file uploads work right
"""
@api_view.post
def test_view(request, a: Body[int], b: files.File) -> str:
return str(a) + b.read().decode("ascii")
factory = RequestFactory()
uploaded_file = SimpleUploadedFile(
"file.txt",
b"MY FILE IS AMAZING",
content_type="text/plain",
)
response = test_view(
factory.post(
"/test/",
data={"a": 42, "b": uploaded_file},
)
)
assert json.loads(response.content) == "42MY FILE IS AMAZING"
def test_no_response():
"""
Tests that a view with no response type returns the contents verbatim
"""
@api_view
def test_view(request):
return [1, "woooooo"]
response = test_view(RequestFactory().get("/test/"))
assert json.loads(response.content) == [1, "woooooo"]
def test_wrong_method():
"""
Tests that a view with a method limiter works
"""
@api_view.get
def test_view(request):
return "yay"
response = test_view(RequestFactory().get("/test/"))
assert json.loads(response.content) == "yay"
response = test_view(RequestFactory().post("/test/"))
assert response.status_code == 405
def test_api_error():
"""
Tests that ApiError propagates right
"""
@api_view.get
def test_view(request):
raise ApiError(401, "you did a bad thing")
response = test_view(RequestFactory().get("/test/"))
assert json.loads(response.content) == {"error": "you did a bad thing"}
assert response.status_code == 401
def test_unusable_type():
"""
Tests that you get a nice error when you use a type on an input that
Pydantic doesn't understand.
"""
with pytest.raises(ValueError):
@api_view.get
def test_view(request, a: RequestFactory):
pass
def test_get_values():
"""
Tests that ApiView.get_values correctly handles lists
"""
assert ApiView.get_values({"a": 2, "b": [3, 4]}) == {"a": 2, "b": [3, 4]}
assert ApiView.get_values({"a": 2, "b[]": [3, 4]}) == {"a": 2, "b": [3, 4]}
assert ApiView.get_values(QueryDict("a=2&b=3&b=4")) == {"a": "2", "b": ["3", "4"]}
assert ApiView.get_values(QueryDict("a=2&b[]=3&b[]=4")) == {
"a": "2",
"b": ["3", "4"],
}
assert ApiView.get_values(QueryDict("a=2&b=3")) == {"a": "2", "b": "3"}
assert ApiView.get_values(QueryDict("a=2&b[]=3")) == {"a": "2", "b": ["3"]}
assert ApiView.get_values(QueryDict("a[b]=1")) == {"a": {"b": "1"}}
assert ApiView.get_values(QueryDict("a[b]=1&a[c]=2")) == {"a": {"b": "1", "c": "2"}}
assert ApiView.get_values(QueryDict("a[b][c]=1")) == {"a": {"b": {"c": "1"}}}
assert ApiView.get_values(QueryDict("a[b][c][]=1")) == {"a": {"b": {"c": ["1"]}}}
assert ApiView.get_values(QueryDict("a[b][]=1&a[b][]=2")) == {
"a": {"b": ["1", "2"]}
}