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import json
import os
import unittest
from sqlglot import exp, jsonpath
from sqlglot.errors import ParseError, TokenError
from tests.helpers import FIXTURES_DIR
class TestJsonpath(unittest.TestCase):
maxDiff = None
def test_jsonpath(self):
expected_expressions = [
exp.JSONPathRoot(),
exp.JSONPathKey(this=exp.JSONPathWildcard()),
exp.JSONPathKey(this="a"),
exp.JSONPathSubscript(this=0),
exp.JSONPathKey(this="x"),
exp.JSONPathUnion(expressions=[exp.JSONPathWildcard(), "y", 1]),
exp.JSONPathKey(this="z"),
exp.JSONPathSelector(this=exp.JSONPathFilter(this="(@.a == 'b'), 1:")),
exp.JSONPathSubscript(this=exp.JSONPathSlice(start=1, end=5, step=None)),
exp.JSONPathUnion(expressions=[1, exp.JSONPathFilter(this="@.a")]),
exp.JSONPathSelector(this=exp.JSONPathScript(this="@.x)")),
]
self.assertEqual(
jsonpath.parse("$.*.a[0]['x'][*, 'y', 1].z[?(@.a == 'b'), 1:][1:5][1,?@.a][(@.x)]"),
exp.JSONPath(expressions=expected_expressions),
)
def test_identity(self):
for selector, expected in (
("$.select", "$.select"),
("$[(@.length-1)]", "$[(@.length-1)]"),
("$[((@.length-1))]", "$[((@.length-1))]"),
):
with self.subTest(f"{selector} -> {expected}"):
self.assertEqual(jsonpath.parse(selector).sql(), f"'{expected}'")
def test_cts_file(self):
with open(os.path.join(FIXTURES_DIR, "jsonpath", "cts.json")) as file:
tests = json.load(file)["tests"]
# sqlglot json path generator rewrites to a normal form
overrides = {
"$.☺": '$["☺"]',
"""$['a',1]""": """$["a",1]""",
"""$[*,'a']""": """$[*,"a"]""",
"""$..['a','d']""": """$..["a","d"]""",
"""$[1, ?@.a=='b', 1:]""": """$[1,?@.a=='b', 1:]""",
"""$["a"]""": """$.a""",
"""$["c"]""": """$.c""",
"""$['a']""": """$.a""",
"""$['c']""": """$.c""",
"""$[' ']""": """$[" "]""",
"""$['\\'']""": """$["\'"]""",
"""$['\\\\']""": """$["\\\\"]""",
"""$['\\/']""": """$["\\/"]""",
"""$['\\b']""": """$["\\b"]""",
"""$['\\f']""": """$["\\f"]""",
"""$['\\n']""": """$["\\n"]""",
"""$['\\r']""": """$["\\r"]""",
"""$['\\t']""": """$["\\t"]""",
"""$['\\u263A']""": """$["\\u263A"]""",
"""$['\\u263a']""": """$["\\u263a"]""",
"""$['\\uD834\\uDD1E']""": """$["\\uD834\\uDD1E"]""",
"""$['\\uD83D\\uDE00']""": """$["\\uD83D\\uDE00"]""",
"""$['']""": """$[""]""",
"""$[? @.a]""": """$[?@.a]""",
"""$[?\n@.a]""": """$[?@.a]""",
"""$[?\t@.a]""": """$[?@.a]""",
"""$[?\r@.a]""": """$[?@.a]""",
"""$[? (@.a)]""": """$[?(@.a)]""",
"""$[?\n(@.a)]""": """$[?(@.a)]""",
"""$[?\t(@.a)]""": """$[?(@.a)]""",
"""$[?\r(@.a)]""": """$[?(@.a)]""",
"""$[ ?@.a]""": """$[?@.a]""",
"""$[\n?@.a]""": """$[?@.a]""",
"""$[\t?@.a]""": """$[?@.a]""",
"""$[\r?@.a]""": """$[?@.a]""",
"""$ ['a']""": """$.a""",
"""$\n['a']""": """$.a""",
"""$\t['a']""": """$.a""",
"""$\r['a']""": """$.a""",
"""$['a'] ['b']""": """$.a.b""",
"""$['a'] \n['b']""": """$.a.b""",
"""$['a'] \t['b']""": """$.a.b""",
"""$['a'] \r['b']""": """$.a.b""",
"""$ .a""": """$.a""",
"""$\n.a""": """$.a""",
"""$\t.a""": """$.a""",
"""$\r.a""": """$.a""",
"""$[ 'a']""": """$.a""",
"""$[\n'a']""": """$.a""",
"""$[\t'a']""": """$.a""",
"""$[\r'a']""": """$.a""",
"""$['a' ]""": """$.a""",
"""$['a'\n]""": """$.a""",
"""$['a'\t]""": """$.a""",
"""$['a'\r]""": """$.a""",
"""$['a' ,'b']""": """$["a","b"]""",
"""$['a'\n,'b']""": """$["a","b"]""",
"""$['a'\t,'b']""": """$["a","b"]""",
"""$['a'\r,'b']""": """$["a","b"]""",
"""$['a', 'b']""": """$["a","b"]""",
"""$['a',\n'b']""": """$["a","b"]""",
"""$['a',\t'b']""": """$["a","b"]""",
"""$['a',\r'b']""": """$["a","b"]""",
"""$[1 :5:2]""": """$[1:5:2]""",
"""$[1\n:5:2]""": """$[1:5:2]""",
"""$[1\t:5:2]""": """$[1:5:2]""",
"""$[1\r:5:2]""": """$[1:5:2]""",
"""$[1: 5:2]""": """$[1:5:2]""",
"""$[1:\n5:2]""": """$[1:5:2]""",
"""$[1:\t5:2]""": """$[1:5:2]""",
"""$[1:\r5:2]""": """$[1:5:2]""",
"""$[1:5 :2]""": """$[1:5:2]""",
"""$[1:5\n:2]""": """$[1:5:2]""",
"""$[1:5\t:2]""": """$[1:5:2]""",
"""$[1:5\r:2]""": """$[1:5:2]""",
"""$[1:5: 2]""": """$[1:5:2]""",
"""$[1:5:\n2]""": """$[1:5:2]""",
"""$[1:5:\t2]""": """$[1:5:2]""",
"""$[1:5:\r2]""": """$[1:5:2]""",
}
for test in tests:
selector = test["selector"]
with self.subTest(f"{selector.strip()} /* {test['name']} */"):
if test.get("invalid_selector"):
try:
jsonpath.parse(selector)
except (ParseError, TokenError):
pass
else:
path = jsonpath.parse(selector)
self.assertEqual(path.sql(), f"'{overrides.get(selector, selector)}'")
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