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import pytest
from jsonpath_ng.ext import parse
from jsonpath_ng.ext.filter import Expression, Filter
from jsonpath_ng.jsonpath import Child, Descendants, Fields, Index, Root, Slice, This
@pytest.mark.parametrize(
"string, parsed",
[
# The authors of all books in the store
(
"$.store.book[*].author",
Child(
Child(Child(Child(Root(), Fields("store")), Fields("book")), Slice()),
Fields("author"),
),
),
#
# All authors
("$..author", Descendants(Root(), Fields("author"))),
#
# All things in the store
("$.store.*", Child(Child(Root(), Fields("store")), Fields("*"))),
#
# The price of everything in the store
(
"$.store..price",
Descendants(Child(Root(), Fields("store")), Fields("price")),
),
#
# The third book
("$..book[2]", Child(Descendants(Root(), Fields("book")), Index(2))),
#
# The last book in order
# "$..book[(@.length-1)]" # Not implemented
("$..book[-1:]", Child(Descendants(Root(), Fields("book")), Slice(start=-1))),
#
# The first two books
# "$..book[0,1]" # Not implemented
("$..book[:2]", Child(Descendants(Root(), Fields("book")), Slice(end=2))),
#
# Filter all books with an ISBN
(
"$..book[?(@.isbn)]",
Child(
Descendants(Root(), Fields("book")),
Filter([Expression(Child(This(), Fields("isbn")), None, None)]),
),
),
#
# Filter all books cheaper than 10
(
"$..book[?(@.price<10)]",
Child(
Descendants(Root(), Fields("book")),
Filter([Expression(Child(This(), Fields("price")), "<", 10)]),
),
),
#
# All members of JSON structure
("$..*", Descendants(Root(), Fields("*"))),
],
)
def test_goessner_examples(string, parsed):
"""
Test Stefan Goessner's `examples`_
.. _examples: https://goessner.net/articles/JsonPath/index.html#e3
"""
assert parse(string, debug=True) == parsed
def test_attribute_and_dict_syntax():
"""Verify that attribute and dict syntax result in identical parse trees."""
assert parse("$.store.book[0].title") == parse("$['store']['book'][0]['title']")
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