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import io
from tempfile import SpooledTemporaryFile
import pytest
from flask import url_for
from marshmallow import missing
from marshmallow.exceptions import ValidationError
from werkzeug.datastructures import FileStorage
from werkzeug.routing import BuildError
from flask_marshmallow.fields import _tpl
@pytest.mark.parametrize(
"template", ["<id>", " <id>", "<id> ", "< id>", "<id >", "< id >"]
)
def test_tpl(template):
assert _tpl(template) == "id"
assert _tpl(template) == "id"
assert _tpl(template) == "id"
def test_url_field(ma, mockauthor):
field = ma.URLFor("author", values=dict(id="<id>"))
result = field.serialize("url", mockauthor)
assert result == url_for("author", id=mockauthor.id)
mockauthor.id = 0
result = field.serialize("url", mockauthor)
assert result == url_for("author", id=0)
def test_url_field_with_invalid_attribute(ma, mockauthor):
field = ma.URLFor("author", values=dict(id="<not-an-attr>"))
expected_msg = "{!r} is not a valid attribute of {!r}".format(
"not-an-attr", mockauthor
)
with pytest.raises(AttributeError, match=expected_msg):
field.serialize("url", mockauthor)
def test_url_field_handles_nested_attribute(ma, mockbook, mockauthor):
field = ma.URLFor("author", values=dict(id="<author.id>"))
result = field.serialize("url", mockbook)
assert result == url_for("author", id=mockauthor.id)
def test_url_field_handles_none_attribute(ma, mockbook, mockauthor):
mockbook.author = None
field = ma.URLFor("author", values=dict(id="<author>"))
result = field.serialize("url", mockbook)
assert result is None
field = ma.URLFor("author", values=dict(id="<author.id>"))
result = field.serialize("url", mockbook)
assert result is None
def test_url_field_deserialization(ma):
field = ma.URLFor("author", values=dict(id="<not-an-attr>"), allow_none=True)
# noop
assert field.deserialize("foo") == "foo"
assert field.deserialize(None) is None
def test_invalid_endpoint_raises_build_error(ma, mockauthor):
field = ma.URLFor("badendpoint")
with pytest.raises(BuildError):
field.serialize("url", mockauthor)
def test_hyperlinks_field(ma, mockauthor):
field = ma.Hyperlinks(
{
"self": ma.URLFor("author", values={"id": "<id>"}),
"collection": ma.URLFor("authors"),
}
)
result = field.serialize("_links", mockauthor)
assert result == {
"self": url_for("author", id=mockauthor.id),
"collection": url_for("authors"),
}
def test_hyperlinks_field_recurses(ma, mockauthor):
field = ma.Hyperlinks(
{
"self": {
"href": ma.URLFor("author", values={"id": "<id>"}),
"title": "The author",
},
"collection": {"href": ma.URLFor("authors"), "title": "Authors list"},
}
)
result = field.serialize("_links", mockauthor)
assert result == {
"self": {"href": url_for("author", id=mockauthor.id), "title": "The author"},
"collection": {"href": url_for("authors"), "title": "Authors list"},
}
def test_hyperlinks_field_recurses_into_list(ma, mockauthor):
field = ma.Hyperlinks(
[
{"rel": "self", "href": ma.URLFor("author", values={"id": "<id>"})},
{"rel": "collection", "href": ma.URLFor("authors")},
]
)
result = field.serialize("_links", mockauthor)
assert result == [
{"rel": "self", "href": url_for("author", id=mockauthor.id)},
{"rel": "collection", "href": url_for("authors")},
]
def test_hyperlinks_field_deserialization(ma):
field = ma.Hyperlinks(
{"href": ma.URLFor("author", values={"id": "<id>"})}, allow_none=True
)
# noop
assert field.deserialize("/author") == "/author"
assert field.deserialize(None) is None
def test_absolute_url(ma, mockauthor):
field = ma.AbsoluteURLFor("authors")
result = field.serialize("abs_url", mockauthor)
assert result == url_for("authors", _external=True)
def test_absolute_url_deserialization(ma):
field = ma.AbsoluteURLFor("authors", allow_none=True)
assert field.deserialize("foo") == "foo"
assert field.deserialize(None) is None
def test_aliases(ma):
from flask_marshmallow.fields import AbsoluteURLFor, AbsoluteUrlFor, URLFor, UrlFor
assert UrlFor is URLFor
assert AbsoluteUrlFor is AbsoluteURLFor
def test_file_field(ma, mockauthor):
field = ma.File()
fs = FileStorage(io.BytesIO(b"test"), "test.jpg")
result = field.deserialize(fs, mockauthor)
assert result == fs
with SpooledTemporaryFile() as temp:
temp.write(b"temp")
fs = FileStorage(temp, "temp.jpg")
result = field.deserialize(fs, mockauthor)
assert result == fs
result = field.deserialize("", mockauthor)
assert result is missing
with pytest.raises(ValidationError, match="Field may not be null."):
field.deserialize(None, mockauthor)
with pytest.raises(ValidationError, match="Not a valid file."):
field.deserialize("123", mockauthor)
def test_config_field(ma, app, mockauthor):
app.config["NAME"] = "test"
field = ma.Config(key="NAME")
result = field.serialize("config_value", mockauthor)
assert result == "test"
field = ma.Config(key="DOES_NOT_EXIST")
with pytest.raises(ValueError, match="not found in the app config"):
field.serialize("config_value", mockauthor)
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