iotdb-client/client-py/tests/test_dataframe.py

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from iotdb.Session import Session
from iotdb.IoTDBContainer import IoTDBContainer

from numpy.testing import assert_array_equal


def test_simple_query():
    with IoTDBContainer("iotdb:dev") as db:
        db: IoTDBContainer
        session = Session(db.get_container_host_ip(), db.get_exposed_port(6667))
        session.open(False)
        session.execute_non_query_statement("CREATE DATABASE root.device0")

        # Write data
        session.insert_str_record("root.device0", 123, "pressure", "15.0")

        # Read
        session_data_set = session.execute_query_statement("SELECT * FROM root.device0")
        df = session_data_set.todf()

        session.close()

    assert list(df.columns) == ["Time", "root.device0.pressure"]
    assert_array_equal(df.values, [[123.0, 15.0]])


def test_non_time_query():
    with IoTDBContainer("iotdb:dev") as db:
        db: IoTDBContainer
        session = Session(db.get_container_host_ip(), db.get_exposed_port(6667))
        session.open(False)
        session.execute_non_query_statement("CREATE DATABASE root.device0")

        # Write data
        session.insert_str_record("root.device0", 123, "pressure", "15.0")

        # Read
        session_data_set = session.execute_query_statement(
            "SHOW TIMESERIES root.device0.*"
        )
        df = session_data_set.todf()

        session.close()

    assert list(df.columns) == [
        "Timeseries",
        "Alias",
        "Database",
        "DataType",
        "Encoding",
        "Compression",
        "Tags",
        "Attributes",
        "Deadband",
        "DeadbandParameters",
        "ViewType",
    ]
    assert_array_equal(
        df.values,
        [
            [
                "root.device0.pressure",
                None,
                "root.device0",
                "FLOAT",
                "GORILLA",
                "LZ4",
                None,
                None,
                None,
                None,
                "BASE",
            ]
        ],
    )