import pytest

from jsonschema import ValidationError

from flask_restx import errors, schemas


class SchemasTest:
    def test_lazyness(self):
        schema = schemas.LazySchema("oas-2.0.json")
        assert schema._schema is None

        "" in schema  # Trigger load
        assert schema._schema is not None
        assert isinstance(schema._schema, dict)

    def test_oas2_schema_is_present(self):
        assert hasattr(schemas, "OAS_20")
        assert isinstance(schemas.OAS_20, schemas.LazySchema)


class ValidationTest:
    def test_oas_20_valid(self):
        assert schemas.validate(
            {
                "swagger": "2.0",
                "info": {
                    "title": "An empty minimal specification",
                    "version": "1.0",
                },
                "paths": {},
            }
        )

    def test_oas_20_invalid(self):
        with pytest.raises(schemas.SchemaValidationError) as excinfo:
            schemas.validate(
                {
                    "swagger": "2.0",
                    "should": "not be here",
                }
            )
        for error in excinfo.value.errors:
            assert isinstance(error, ValidationError)

    def test_unknown_schema(self):
        with pytest.raises(errors.SpecsError):
            schemas.validate({"valid": "no"})

    def test_unknown_version(self):
        with pytest.raises(errors.SpecsError):
            schemas.validate({"swagger": "42.0"})