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tests.py
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# -*- coding: utf-8 -*-
import unittest
import json
import httpretty
from jsonderef import JsonDeref, RefNotFound, JsonDerefException
class JsonDerefTests(unittest.TestCase):
"""
Tests for deref function
"""
def simple_deref_test(self):
"""
Trivial derefs should pass
"""
cases = [
{
"in": {"key": "value"},
"out": {"key": "value"}
},
{
"in": {"key": "value", "ref": {"$ref": "#/key"}},
"out": {"key": "value", "ref": "value"}
},
{
"in": {"key": "value", "ref": [{"$ref": "#/key"}]},
"out": {"key": "value", "ref": ["value"]}
},
{
"in": {"key": 1, "ref": {"$ref": "#/key"}},
"out": {"key": 1, "ref": 1}
},
{
"in": {"key": 1.23, "ref": {"$ref": "#/key"}},
"out": {"key": 1.23, "ref": 1.23}
},
{
"in": {"key": True, "ref": {"$ref": "#/key"}},
"out": {"key": True, "ref": True}
},
{
"in": {"key": [], "ref": {"$ref": "#/key"}},
"out": {"key": [], "ref": []}
},
{
"in": {"key": [1,2], "ref": {"$ref": "#/key"}},
"out": {"key": [1,2], "ref": [1,2]}
},
{
"in": {"key": {}, "ref": {"$ref": "#/key"}},
"out": {"key": {}, "ref": {}}
},
{
"in": {"key": {"a": 1}, "ref": {"$ref": "#/key"}},
"out": {"key": {"a": 1}, "ref": {"a": 1}}
},
{
"in": {
"key": u"Žluťoučký kůň úpěl ďábelské ódy",
"ref": {"$ref": "#/key"}
},
"out": {
"key": u"Žluťoučký kůň úpěl ďábelské ódy",
"ref": u"Žluťoučký kůň úpěl ďábelské ódy"
}
}
]
for case in cases:
real_output = JsonDeref().deref(case["in"])
self.assertDictEqual(
real_output, case["out"],
"Deref of {0} should produce {1} but produces {2}".format(
json.dumps(case["in"], indent=2),
json.dumps(case["out"], indent=2),
json.dumps(real_output, indent=2)
)
)
def errors_test(self):
"""
Errors should be properly handled
"""
with self.assertRaises(RefNotFound):
JsonDeref().deref({"$ref": "#/key"})
with self.assertRaises(RefNotFound):
JsonDeref().deref({"key": [], "ref": {"$ref": "#/key/1"}})
with self.assertRaises(RefNotFound):
JsonDeref().deref({"key": {}, "ref": {"$ref": "#/key/a"}})
self.assertEqual(
JsonDeref(raise_on_not_found=False).deref({"$ref": "#/key"}),
None
)
self.assertEqual(
JsonDeref(raise_on_not_found=False).deref(
{"key": [], "ref": {"$ref": "#/key/1"}}
),
{"key": [], "ref": None}
)
self.assertEqual(
JsonDeref(raise_on_not_found=False).deref(
{"key": {}, "ref": {"$ref": "#/key/a"}}
),
{"key": {}, "ref": None}
)
self.assertEqual(
JsonDeref(raise_on_not_found=False, not_found="Not found").deref(
{"$ref": "#/key"}
),
"Not found"
)
def recursive_test(self):
"""
Max depth should be correctly handled
"""
# Reference the reference - does not nest
doc = {"a": {"$ref": "#/a"}}
for i in range(1,100):
output = JsonDeref().deref(doc, 100)
depth = 0
while output.get("a",None) is not None:
output = output["a"]
depth += 1
self.assertEqual(depth, 1)
# Reference the entire object which has a reference inside - nests
doc = {"a": {"$ref": "#"}}
for i in range(1,100):
output = JsonDeref().deref(doc, i)
depth = 0
while output.get("a",None) is not None:
output = output["a"]
depth += 1
self.assertEqual(depth, i+1)
def rfc_test(self):
"""
Deref should be compliant with rfc 6901
"""
doc = {
"foo": ["bar", "baz"],
"": 0,
"a/b": 1,
"c%d": 2,
"e^f": 3,
"g|h": 4,
"i\\j": 5,
"k\"l": 6,
" ": 7,
"m~n": 8
}
ref_key_values = [
["#/foo", ["bar", "baz"]],
["#/foo/0", "bar"],
["#/", 0],
["#/a~1b", 1],
["#/c%d", 2],
["#/e^f", 3],
["#/g|h", 4],
["#/i\\j", 5],
["#/k\"l", 6],
["#/ ", 7],
["#/m~0n", 8],
[
"#",
{
"foo": ["bar", "baz"],
"": 0,
"a/b": 1,
"c%d": 2,
"e^f": 3,
"g|h": 4,
"i\\j": 5,
"k\"l": 6,
" ": 7,
"m~n": 8,
"ref": {"$ref": "#"}
}
]
]
for m in ref_key_values:
doc["ref"] = {"$ref": m[0]}
real_output = JsonDeref().deref(doc, 1)
self.assertEqual(
real_output["ref"], m[1],
"Key ref in {0} should be {1} after deref but it is {2}".format(
json.dumps(doc, indent=2),
json.dumps(m[1], indent=2),
json.dumps(real_output["ref"], indent=2)
)
)
@httpretty.activate
def remote_url_test(self):
"""
It should be possible to get ref from remote urls
"""
remote_doc = {
"key": "value",
"object": {
"key": "value"
},
"array": [1,2,3,4,5],
"self_ref_to_key": {
"$ref": "#/key"
},
"self_ref_recursive": {
"$ref": "#"
},
"self_ref_url": {
"$ref": "http://200.uri#"
}
}
httpretty.reset()
httpretty.register_uri(
httpretty.GET, "http://200.uri", body=json.dumps(remote_doc)
)
chain_len = 50
for i in range(0, chain_len):
httpretty.register_uri(
httpretty.GET, "http://{0}.uri".format(i),
body=json.dumps({
"key": {"$ref": "http://{0}.uri#/key".format(i+1)}
})
)
httpretty.register_uri(
httpretty.GET, "http://{0}.uri".format(chain_len),
body=json.dumps({
"key": "value"
})
)
cases = [
{
"in": {"key": {"$ref": "http://200.uri#/key"}},
"out": {"key": "value"},
"max_depth": 10
},
{
"in": {"key": {"$ref": "http://200.uri#/object"}},
"out": {"key": {"key": "value"}},
"max_depth": 10
},
{
"in": {"key": {"$ref": "http://200.uri#/array"}},
"out": {"key": [1,2,3,4,5]},
"max_depth": 10
},
{
"in": {"key": {"$ref": "http://200.uri#/self_ref_to_key"}},
"out": {"key": "value"},
"max_depth": 10
},
{
# Yeah, this returns "local-like" reference
"in": {"key": {"$ref": "http://200.uri#/self_ref_to_key"}},
"out": {"key": {"$ref": "#/key"}},
"max_depth": 1
},
{
"in": {"$ref": "http://200.uri#"},
"out": remote_doc,
"max_depth": 1
},
{
# Chain
"in": {"key": {"$ref": "http://0.uri#/key"}},
"out": {"key": "value"},
"max_depth": chain_len + 1
}
]
for case in cases:
real_output = JsonDeref().deref(case["in"], case["max_depth"])
self.assertDictEqual(
real_output, case["out"],
"Deref of {0} should produce {1} but produces {2}".format(
json.dumps(case["in"], indent=2),
json.dumps(case["out"], indent=2),
json.dumps(real_output, indent=2)
)
)
@httpretty.activate
def remote_url_errors_test(self):
"""
Remote urls should correclty raise errors
"""
httpretty.reset()
httpretty.register_uri(
httpretty.GET, "http://400.uri", status=400
)
with self.assertRaises(RefNotFound):
JsonDeref().deref(
{"ref": {"$ref": "http://400.uri#"}}
)
res = JsonDeref(raise_on_not_found=False).deref(
{"ref": {"$ref": "http://400.uri#"}}
)
self.assertDictEqual(res, {"ref": None})
httpretty.register_uri(
httpretty.GET, "http://200.uri", status=200, body="Not a json"
)
with self.assertRaises(JsonDerefException):
JsonDeref().deref(
{"ref": {"$ref": "http://200.uri#"}}
)
with self.assertRaises(JsonDerefException):
JsonDeref(raise_on_not_found=False).deref(
{"ref": {"$ref": "http://200.uri#"}}
)