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# File called _pytest for PyCharm compatability

import pytest

import opensearch_py_ml as oml
from opensearch_py_ml.query_compiler import QueryCompiler
from tests import FLIGHTS_INDEX_NAME, OPENSEARCH_TEST_CLIENT


class TestDataFrameInit:
    def test_init(self):
        # Construct empty DataFrame (throws)
        with pytest.raises(ValueError):
            oml.DataFrame()

        # Construct invalid DataFrame (throws)
        with pytest.raises(ValueError):
            oml.DataFrame(os_client=OPENSEARCH_TEST_CLIENT)

        # Construct invalid DataFrame (throws)
        with pytest.raises(ValueError):
            oml.DataFrame(os_index_pattern=FLIGHTS_INDEX_NAME)

        # Good constructors
        oml.DataFrame(OPENSEARCH_TEST_CLIENT, FLIGHTS_INDEX_NAME)
        oml.DataFrame(
            os_client=OPENSEARCH_TEST_CLIENT, os_index_pattern=FLIGHTS_INDEX_NAME
        )

        qc = QueryCompiler(
            client=OPENSEARCH_TEST_CLIENT, index_pattern=FLIGHTS_INDEX_NAME
        )
        oml.DataFrame(_query_compiler=qc)