test_dialect.py

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#
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import operator

from sqlalchemy import create_engine, inspect
from sqlalchemy.dialects import registry
from sqlalchemy.orm import Session
from sqlalchemy.sql import text
from tests.integration.iotdb_container import IoTDBContainer
from urllib.parse import quote_plus as urlquote

final_flag = True
failed_count = 0


def test_fail():
    global failed_count
    global final_flag
    final_flag = False
    failed_count += 1


def print_message(message):
    print("*********")
    print(message)
    print("*********")
    assert False


def test_dialect():

    with IoTDBContainer("iotdb:dev") as db:
        db: IoTDBContainer
        password = urlquote("root")
        host = db.get_container_host_ip()
        port = db.get_exposed_port(6667)
        url = f"iotdb://root:{password}@{host}:{port}"
        registry.register("iotdb", "iotdb.sqlalchemy.IoTDBDialect", "IoTDBDialect")
        eng = create_engine(url)

        with Session(eng) as session:
            session.execute(text("create database root.cursor"))
            session.execute(text("create database root.cursor_s1"))
            session.execute(
                text(
                    "create timeseries root.cursor.device1.temperature with datatype=FLOAT,encoding=RLE"
                )
            )
            session.execute(
                text(
                    "create timeseries root.cursor.device1.status with datatype=FLOAT,encoding=RLE"
                )
            )
            session.execute(
                text(
                    "create timeseries root.cursor.device2.temperature with datatype=FLOAT,encoding=RLE"
                )
            )

        insp = inspect(eng)
        # test get_schema_names
        schema_names = insp.get_schema_names()
        if not operator.ge(
            schema_names, ["root.__audit", "root.cursor", "root.cursor_s1"]
        ):
            test_fail()
            print_message("Actual result " + str(schema_names))
            print_message("test get_schema_names failed!")
        # test get_table_names
        table_names = insp.get_table_names("root.cursor")
        if not operator.eq(table_names, ["device1", "device2"]):
            test_fail()
            print_message("Actual result " + str(table_names))
            print_message("test get_table_names failed!")
        # test get_columns
        columns = insp.get_columns(table_name="device1", schema="root.cursor")
        if len(columns) != 3:
            test_fail()
            print_message("Actual result " + str(columns))
            print_message("test get_columns failed!")

        with Session(eng) as session:
            session.execute(text("delete database root.cursor"))
            session.execute(text("delete database root.cursor_s1"))

        # close engine
        eng.dispose()


if final_flag:
    print("All executions done!!")
else:
    print("Some test failed, please have a check")
    print("failed count: ", failed_count)
    exit(1)