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# SPDX-License-Identifier: (Apache-2.0 OR MIT)
import datetime
import sys
import uuid
import pytest
import orjson
try:
import numpy
except ImportError:
numpy = None # type: ignore
class Custom:
def __init__(self):
self.name = uuid.uuid4().hex
def __str__(self):
return f"{self.__class__.__name__}({self.name})"
class Recursive:
def __init__(self, cur):
self.cur = cur
def default_recursive(obj):
if obj.cur != 0:
obj.cur -= 1
return obj
return obj.cur
def default_raises(obj):
raise TypeError
class TestType:
def test_default_not_callable(self):
"""
dumps() default not callable
"""
with pytest.raises(orjson.JSONEncodeError):
orjson.dumps(Custom(), default=NotImplementedError)
ran = False
try:
orjson.dumps(Custom(), default=NotImplementedError)
except Exception as err:
assert isinstance(err, orjson.JSONEncodeError)
assert str(err) == "default serializer exceeds recursion limit"
ran = True
assert ran
def test_default_func(self):
"""
dumps() default function
"""
ref = Custom()
def default(obj):
return str(obj)
assert orjson.dumps(ref, default=default) == b'"%s"' % str(ref).encode("utf-8")
def test_default_func_none(self):
"""
dumps() default function None ok
"""
assert orjson.dumps(Custom(), default=lambda x: None) == b"null"
def test_default_func_empty(self):
"""
dumps() default function no explicit return
"""
ref = Custom()
def default(obj):
if isinstance(obj, set):
return list(obj)
assert orjson.dumps(ref, default=default) == b"null"
assert orjson.dumps({ref}, default=default) == b"[null]"
def test_default_func_exc(self):
"""
dumps() default function raises exception
"""
def default(obj):
raise NotImplementedError
with pytest.raises(orjson.JSONEncodeError):
orjson.dumps(Custom(), default=default)
ran = False
try:
orjson.dumps(Custom(), default=default)
except Exception as err:
assert isinstance(err, orjson.JSONEncodeError)
assert str(err) == "Type is not JSON serializable: Custom"
ran = True
assert ran
def test_default_exception_type(self):
"""
dumps() TypeError in default() raises orjson.JSONEncodeError
"""
ref = Custom()
with pytest.raises(orjson.JSONEncodeError):
orjson.dumps(ref, default=default_raises)
def test_default_vectorcall_str(self):
"""
dumps() default function vectorcall str
"""
class SubStr(str):
pass
obj = SubStr("saasa")
ref = b'"%s"' % str(obj).encode("utf-8")
assert (
orjson.dumps(obj, option=orjson.OPT_PASSTHROUGH_SUBCLASS, default=str)
== ref
)
def test_default_vectorcall_list(self):
"""
dumps() default function vectorcall list
"""
obj = {1, 2}
ref = b"[1,2]"
assert orjson.dumps(obj, default=list) == ref
def test_default_func_nested_str(self):
"""
dumps() default function nested str
"""
ref = Custom()
def default(obj):
return str(obj)
assert orjson.dumps({"a": ref}, default=default) == b'{"a":"%s"}' % str(
ref
).encode("utf-8")
def test_default_func_list(self):
"""
dumps() default function nested list
"""
ref = Custom()
def default(obj):
if isinstance(obj, Custom):
return [str(obj)]
assert orjson.dumps({"a": ref}, default=default) == b'{"a":["%s"]}' % str(
ref
).encode("utf-8")
def test_default_func_nested_list(self):
"""
dumps() default function list
"""
ref = Custom()
def default(obj):
return str(obj)
assert orjson.dumps([ref] * 100, default=default) == b"[%s]" % b",".join(
b'"%s"' % str(ref).encode("utf-8") for _ in range(100)
)
def test_default_func_bytes(self):
"""
dumps() default function errors on non-str
"""
ref = Custom()
def default(obj):
return bytes(obj)
with pytest.raises(orjson.JSONEncodeError):
orjson.dumps(ref, default=default)
ran = False
try:
orjson.dumps(ref, default=default)
except Exception as err:
assert isinstance(err, orjson.JSONEncodeError)
assert str(err) == "Type is not JSON serializable: Custom"
ran = True
assert ran
def test_default_func_invalid_str(self):
"""
dumps() default function errors on invalid str
"""
ref = Custom()
def default(obj):
return "\ud800"
with pytest.raises(orjson.JSONEncodeError):
orjson.dumps(ref, default=default)
def test_default_lambda_ok(self):
"""
dumps() default lambda
"""
ref = Custom()
assert orjson.dumps(ref, default=lambda x: str(x)) == b'"%s"' % str(ref).encode(
"utf-8"
)
def test_default_callable_ok(self):
"""
dumps() default callable
"""
class CustomSerializer:
def __init__(self):
self._cache = {}
def __call__(self, obj):
if obj not in self._cache:
self._cache[obj] = str(obj)
return self._cache[obj]
ref_obj = Custom()
ref_bytes = b'"%s"' % str(ref_obj).encode("utf-8")
for obj in [ref_obj] * 100:
assert orjson.dumps(obj, default=CustomSerializer()) == ref_bytes
def test_default_recursion(self):
"""
dumps() default recursion limit
"""
assert orjson.dumps(Recursive(254), default=default_recursive) == b"0"
def test_default_recursion_reset(self):
"""
dumps() default recursion limit reset
"""
assert (
orjson.dumps(
[Recursive(254), {"a": "b"}, Recursive(254), Recursive(254)],
default=default_recursive,
)
== b'[0,{"a":"b"},0,0]'
)
def test_default_recursion_infinite(self):
"""
dumps() default infinite recursion
"""
ref = Custom()
def default(obj):
return obj
refcount = sys.getrefcount(ref)
with pytest.raises(orjson.JSONEncodeError):
orjson.dumps(ref, default=default)
assert sys.getrefcount(ref) == refcount
def test_reference_cleanup_default_custom_pass(self):
ref = Custom()
def default(obj):
if isinstance(ref, Custom):
return str(ref)
raise TypeError
refcount = sys.getrefcount(ref)
orjson.dumps(ref, default=default)
assert sys.getrefcount(ref) == refcount
def test_reference_cleanup_default_custom_error(self):
"""
references to encoded objects are cleaned up
"""
ref = Custom()
def default(obj):
raise TypeError
refcount = sys.getrefcount(ref)
with pytest.raises(orjson.JSONEncodeError):
orjson.dumps(ref, default=default)
assert sys.getrefcount(ref) == refcount
def test_reference_cleanup_default_subclass(self):
ref = datetime.datetime(1970, 1, 1, 0, 0, 0)
def default(obj):
if isinstance(ref, datetime.datetime):
return repr(ref)
raise TypeError
refcount = sys.getrefcount(ref)
orjson.dumps(ref, option=orjson.OPT_PASSTHROUGH_DATETIME, default=default)
assert sys.getrefcount(ref) == refcount
def test_reference_cleanup_default_subclass_lambda(self):
ref = uuid.uuid4()
refcount = sys.getrefcount(ref)
orjson.dumps(
ref, option=orjson.OPT_PASSTHROUGH_DATETIME, default=lambda val: str(val)
)
assert sys.getrefcount(ref) == refcount
@pytest.mark.skipif(numpy is None, reason="numpy is not installed")
def test_default_numpy(self):
ref = numpy.array([""] * 100)
refcount = sys.getrefcount(ref)
orjson.dumps(
ref, option=orjson.OPT_SERIALIZE_NUMPY, default=lambda val: val.tolist()
)
assert sys.getrefcount(ref) == refcount
def test_default_set(self):
"""
dumps() default function with set
"""
def default(obj):
if isinstance(obj, set):
return list(obj)
raise TypeError
assert orjson.dumps({1, 2}, default=default) == b"[1,2]"
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