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"""Test validation against JSON examples.
These examples are organised in groups (sharing the same schema).
Each example group is a folder under the `tests/examples/` directory
that contains a single `.schema.json` file and as many examples (simple
`.json` files, whithout `.schema`) as necessary.
If an example is meant to fail validation, a text file with the same name/path
but replacing the extension from `.json` to `.error` is expected to exist.
The content of this `.error` file should be a piece of the message of the
associated JsonSchemaException (i.e. a substring of `str(exception_object)`).
All files should be encoded with UTF-8.
"""
import json
from pathlib import Path
import pytest
from fastjsonschema import JsonSchemaException, compile
HERE = Path(__file__).parent
EXAMPLES = HERE / "examples"
EXAMPLE_GROUPS = [x.name for x in EXAMPLES.glob("*/")]
@pytest.mark.parametrize("example_group", EXAMPLE_GROUPS)
def test_validate(example_group):
example_dir = EXAMPLES / example_group
schema = next(example_dir.glob("*.schema.json"))
validator = compile(json.loads(schema.read_text(encoding="utf-8")))
examples = (
(e, e.with_suffix(".error"), json.loads(e.read_text(encoding="utf-8")))
for e in example_dir.glob("*.json")
if not str(e).endswith(".schema.json")
)
for example_file, err_file, example in examples:
if err_file.exists():
with pytest.raises(JsonSchemaException) as exc_info:
validator(example)
assert err_file.read_text(encoding="utf-8").strip() in str(exc_info.value).strip()
else:
validator(example) # valid
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