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import io
import logging
import os.path
import sys
import unittest
import pytest
import jsondiff
from jsondiff import diff, replace, add, discard, insert, delete, JsonDiffer
from .utils import generate_random_json, perturbate_json
from hypothesis import given, settings, strategies
logging.basicConfig(
level=logging.INFO,
format=(
'%(asctime)s %(pathname)s[line:%(lineno)d] %(levelname)s %(message)s'
),
)
logging.getLogger("jsondiff").setLevel(logging.DEBUG)
def generate_scenario(rng):
a = generate_random_json(rng, sets=True)
b = perturbate_json(a, rng, sets=True)
return a, b
def generate_scenario_no_sets(rng):
a = generate_random_json(rng, sets=False)
b = perturbate_json(a, rng, sets=False)
return a, b
class JsonDiffTests(unittest.TestCase):
def test_a(self):
self.assertEqual({}, diff(1, 1))
self.assertEqual({}, diff(True, True))
self.assertEqual({}, diff('abc', 'abc'))
self.assertEqual({}, diff([1, 2], [1, 2]))
self.assertEqual({}, diff((1, 2), (1, 2)))
self.assertEqual({}, diff({1, 2}, {1, 2}))
self.assertEqual({}, diff({'a': 1, 'b': 2}, {'a': 1, 'b': 2}))
self.assertEqual({}, diff([], []))
self.assertEqual({}, diff(None, None))
self.assertEqual({}, diff({}, {}))
self.assertEqual({}, diff(set(), set()))
self.assertEqual(2, diff(1, 2))
self.assertEqual(False, diff(True, False))
self.assertEqual('def', diff('abc', 'def'))
self.assertEqual([3, 4], diff([1, 2], [3, 4]))
self.assertEqual((3, 4), diff((1, 2), (3, 4)))
self.assertEqual({3, 4}, diff({1, 2}, {3, 4}))
self.assertEqual({replace: {'c': 3, 'd': 4}}, diff({'a': 1, 'b': 2}, {'c': 3, 'd': 4}))
self.assertEqual({replace: {'c': 3, 'd': 4}}, diff([1, 2], {'c': 3, 'd': 4}))
self.assertEqual(123, diff({'a': 1, 'b': 2}, 123))
self.assertEqual({delete: ['b']}, diff({'a': 1, 'b': 2}, {'a': 1}))
self.assertEqual({'b': 3}, diff({'a': 1, 'b': 2}, {'a': 1, 'b': 3}))
self.assertEqual({'c': 3}, diff({'a': 1, 'b': 2}, {'a': 1, 'b': 2, 'c': 3}))
self.assertEqual({delete: ['b'], 'c': 3}, diff({'a': 1, 'b': 2}, {'a': 1, 'c': 3}))
self.assertEqual({add: {3}}, diff({1, 2}, {1, 2, 3}))
self.assertEqual({add: {3}, discard: {4}}, diff({1, 2, 4}, {1, 2, 3}))
self.assertEqual({discard: {4}}, diff({1, 2, 4}, {1, 2}))
self.assertEqual({insert: [(1, 'b')]}, diff(['a', 'c'], ['a', 'b', 'c']))
self.assertEqual({insert: [(1, 'b')], delete: [3, 0]}, diff(['x', 'a', 'c', 'x'], ['a', 'b', 'c']))
self.assertEqual(
{insert: [(2, 'b')], delete: [4, 0], 1: {'v': 20}},
diff(['x', 'a', {'v': 11}, 'c', 'x'], ['a', {'v': 20}, 'b', 'c'])
)
self.assertEqual(
{insert: [(2, 'b')], delete: [4, 0], 1: {'v': 20}},
diff(['x', 'a', {'u': 10, 'v': 11}, 'c', 'x'], ['a', {'u': 10, 'v': 20}, 'b', 'c'])
)
def test_marshal(self):
differ = JsonDiffer()
d = {
delete: 3,
'$delete': 4,
insert: 4,
'$$something': 1
}
dm = differ.marshal(d)
self.assertEqual(d, differ.unmarshal(dm))
@given(strategies.randoms().map(generate_scenario_no_sets))
@settings(max_examples=1000)
def test_dump(self, scenario):
a, b = scenario
diff(a, b, syntax='compact', dump=True)
diff(a, b, syntax='explicit', dump=True)
diff(a, b, syntax='symmetric', dump=True)
@given(strategies.randoms().map(generate_scenario))
@settings(max_examples=1000)
def test_compact_syntax(self, scenario):
a, b = scenario
differ = JsonDiffer(syntax='compact')
d = differ.diff(a, b)
self.assertEqual(b, differ.patch(a, d))
dm = differ.marshal(d)
self.assertEqual(d, differ.unmarshal(dm))
@given(strategies.randoms().map(generate_scenario))
@settings(max_examples=1000)
def test_explicit_syntax(self, scenario):
a, b = scenario
differ = JsonDiffer(syntax='explicit')
d = differ.diff(a, b)
# self.assertEqual(b, differ.patch(a, d))
dm = differ.marshal(d)
self.assertEqual(d, differ.unmarshal(dm))
@given(strategies.randoms().map(generate_scenario))
@settings(max_examples=1000)
def test_symmetric_syntax(self, scenario):
a, b = scenario
differ = JsonDiffer(syntax='symmetric')
d = differ.diff(a, b)
self.assertEqual(b, differ.patch(a, d))
self.assertEqual(a, differ.unpatch(b, d))
dm = differ.marshal(d)
self.assertEqual(d, differ.unmarshal(dm))
def test_long_arrays(self):
size = 100
a = [{'a': i, 'b': 2 * i} for i in range(1, size)]
b = [{'a': i, 'b': 3 * i} for i in range(1, size)]
r = sys.getrecursionlimit()
sys.setrecursionlimit(size - 1)
try:
diff(a, b)
except RecursionError:
self.fail('cannot diff long arrays')
finally:
sys.setrecursionlimit(r)
@pytest.mark.parametrize(
("a", "b", "syntax", "expected"),
[
pytest.param([], [{"a": True}], "explicit", {insert: [(0, {"a": True})]},
id="issue59_"),
pytest.param([{"a": True}], [], "explicit", {delete: [0]},
id="issue59_"),
pytest.param([], [{"a": True}], "compact", [{"a": True}],
id="issue59_"),
pytest.param([{"a": True}], [], "compact", [],
id="issue59_"),
pytest.param([], [{"a": True}], "symmetric", {insert: [(0, {"a": True})]},
id="issue59_"),
pytest.param([{"a": True}], [], "symmetric", {delete: [(0, {"a": True})]},
id="issue59_"),
pytest.param({1: 2}, {5: 3}, "symmetric", {delete: {1: 2}, insert: {5: 3}},
id="issue36_"),
pytest.param({1: 2}, {5: 3}, "compact", {replace: {5: 3}},
id="issue36_"),
],
)
class TestSpecificIssue:
def test_issue(self, a, b, syntax, expected):
actual = diff(a, b, syntax=syntax)
assert actual == expected
class TestRightOnly(unittest.TestCase):
def test_right_only_syntax(self):
a = {"poplist": [1, 2, 3]}
b = {}
self.assertEqual(
diff(a, b, syntax="rightonly", marshal=True),
{
"$delete": ["poplist"],
}
)
a = {1: 2, 2: 3, 'list': [1, 2, 3], 'samelist': [1, 2, 3], "poplist": [1, 2, 3]}
b = {1: 2, 2: 4, 'list': [1, 3], 'samelist': [1, 2, 3]}
self.assertEqual(
diff(a, b, syntax="rightonly", marshal=True),
{
2: 4,
"list": [1, 3],
"$delete": ["poplist"],
}
)
self.assertEqual(
diff(a, b, syntax="rightonly"),
{
2: 4,
"list": [1, 3],
delete: ["poplist"],
}
)
c = [1, 2, 3]
d = [4, 5, 6]
self.assertEqual(
diff(c, d, syntax="rightonly", marshal=True),
[4, 5, 6],
)
class TestLoaders(unittest.TestCase):
here = os.path.dirname(__file__)
data_dir = os.path.join(here, "data")
def test_json_string_loader(self):
json_str = '{"hello": "world", "data": [1,2,3]}'
expected = {"hello": "world", "data": [1, 2, 3]}
loader = jsondiff.JsonLoader()
actual = loader(json_str)
self.assertEqual(expected, actual)
def test_json_file_loader(self):
json_file = os.path.join(TestLoaders.data_dir, "test_01.json")
expected = {"hello": "world", "data": [1, 2, 3]}
loader = jsondiff.JsonLoader()
with open(json_file) as f:
actual = loader(f)
self.assertEqual(expected, actual)
def test_yaml_string_loader(self):
json_str = """---
hello: world
data:
- 1
- 2
- 3
"""
expected = {"hello": "world", "data": [1, 2, 3]}
loader = jsondiff.YamlLoader()
actual = loader(json_str)
self.assertEqual(expected, actual)
def test_yaml_file_loader(self):
yaml_file = os.path.join(TestLoaders.data_dir, "test_01.yaml")
expected = {"hello": "world", "data": [1, 2, 3]}
loader = jsondiff.YamlLoader()
with open(yaml_file) as f:
actual = loader(f)
self.assertEqual(expected, actual)
class TestDumpers(unittest.TestCase):
def test_json_dump_string(self):
data = {"hello": "world", "data": [1, 2, 3]}
expected = '{"hello": "world", "data": [1, 2, 3]}'
dumper = jsondiff.JsonDumper()
actual = dumper(data)
self.assertEqual(expected, actual)
def test_json_dump_string_indented(self):
data = {"hello": "world", "data": [1, 2, 3]}
expected = """{
"hello": "world",
"data": [
1,
2,
3
]
}"""
dumper = jsondiff.JsonDumper(indent=4)
actual = dumper(data)
self.assertEqual(expected, actual)
def test_json_dump_string_fp(self):
data = {"hello": "world", "data": [1, 2, 3]}
expected = """{
"hello": "world",
"data": [
1,
2,
3
]
}"""
dumper = jsondiff.JsonDumper(indent=4)
buffer = io.StringIO()
dumper(data, buffer)
self.assertEqual(expected, buffer.getvalue())
def test_yaml_dump_string(self):
data = {"hello": "world", "data": [1, 2, 3]}
expected = """data:
- 1
- 2
- 3
hello: world
"""
# Sort keys just to make things deterministic
dumper = jsondiff.YamlDumper(sort_keys=True)
actual = dumper(data)
self.assertEqual(expected, actual)
def test_yaml_dump_string_fp(self):
data = {"hello": "world", "data": [1, 2, 3]}
expected = """data:
- 1
- 2
- 3
hello: world
"""
# Sort keys just to make things deterministic
dumper = jsondiff.YamlDumper(sort_keys=True)
buffer = io.StringIO()
dumper(data, buffer)
self.assertEqual(expected, buffer.getvalue())
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