Fix BigQueryColumnCheckOperator runtime error

[vchiapaikeo]

A TypeError which causes tasks to fail at runtime exists in the BigQueryColumnCheckOperator. This was initially uncovered while looking at another issue for this operator here: #28343 (comment)

This fixes the operator by calling the list's extend() method instead of calling the list itself. Also added a few tests.

As an aside, I had to SKIP=run-mypy during my commit because I ran into this unusual pre-commit failure which doesn't seem relevant:

Run mypy for providers.................................................................Failed
- hook id: run-mypy
- exit code: 1

airflow/providers/google/cloud/operators/bigquery.py:250: error:
"BigQueryCheckOperator" has no attribute "_raise_exception"  [attr-defined]
                self._raise_exception(f"Test failed.\nQuery:\n{self.sql}\n...
                ^
Found 1 error in 1 file (checked 1 source file)
If you see strange stacktraces above, run `breeze ci-image build --python 3.7` and try again.

Test Dag

from airflow import DAG

from airflow.providers.google.cloud.operators.bigquery import BigQueryColumnCheckOperator

DEFAULT_TASK_ARGS = {
    "owner": "gcp-data-platform",
    "retries": 1,
    "retry_delay": 10,
    "start_date": "2022-08-01",
}

with DAG(
    max_active_runs=1,
    concurrency=2,
    catchup=False,
    schedule_interval="@daily",
    dag_id="test_bigquery_column_check",
    default_args=DEFAULT_TASK_ARGS,
) as dag:

    basic_column_quality_checks = BigQueryColumnCheckOperator(
            task_id="check_columns",
            table="my-project.vchiapaikeo.test1",
            use_legacy_sql=False,
            column_mapping={
                "col1": {"min": {"greater_than": 0}},
            },
        )

Task Logs:

686f5b14989d
*** Reading local file: /root/airflow/logs/dag_id=test_bigquery_column_check/run_id=scheduled__2023-01-08T00:00:00+00:00/task_id=check_columns/attempt=3.log
[2023-01-09, 01:40:19 UTC] {taskinstance.py:1093} INFO - Dependencies all met for <TaskInstance: test_bigquery_column_check.check_columns scheduled__2023-01-08T00:00:00+00:00 [queued]>
[2023-01-09, 01:40:19 UTC] {taskinstance.py:1093} INFO - Dependencies all met for <TaskInstance: test_bigquery_column_check.check_columns scheduled__2023-01-08T00:00:00+00:00 [queued]>
[2023-01-09, 01:40:19 UTC] {taskinstance.py:1295} INFO - 
--------------------------------------------------------------------------------
[2023-01-09, 01:40:19 UTC] {taskinstance.py:1296} INFO - Starting attempt 3 of 4
[2023-01-09, 01:40:19 UTC] {taskinstance.py:1297} INFO - 
--------------------------------------------------------------------------------
[2023-01-09, 01:40:19 UTC] {taskinstance.py:1316} INFO - Executing <Task(BigQueryColumnCheckOperator): check_columns> on 2023-01-08 00:00:00+00:00
[2023-01-09, 01:40:19 UTC] {standard_task_runner.py:55} INFO - Started process 481 to run task
[2023-01-09, 01:40:20 UTC] {standard_task_runner.py:82} INFO - Running: ['***', 'tasks', 'run', 'test_bigquery_column_check', 'check_columns', 'scheduled__2023-01-08T00:00:00+00:00', '--job-id', '5', '--raw', '--subdir', 'DAGS_FOLDER/test_bigquery_column_check.py', '--cfg-path', '/tmp/tmpgeqtp2hz']
[2023-01-09, 01:40:20 UTC] {standard_task_runner.py:83} INFO - Job 5: Subtask check_columns
[2023-01-09, 01:40:21 UTC] {task_command.py:391} INFO - Running <TaskInstance: test_bigquery_column_check.check_columns scheduled__2023-01-08T00:00:00+00:00 [running]> on host 686f5b14989d
[2023-01-09, 01:40:21 UTC] {taskinstance.py:1525} INFO - Exporting the following env vars:
AIRFLOW_CTX_DAG_OWNER=gcp-data-platform
AIRFLOW_CTX_DAG_ID=test_bigquery_column_check
AIRFLOW_CTX_TASK_ID=check_columns
AIRFLOW_CTX_EXECUTION_DATE=2023-01-08T00:00:00+00:00
AIRFLOW_CTX_TRY_NUMBER=3
AIRFLOW_CTX_DAG_RUN_ID=scheduled__2023-01-08T00:00:00+00:00
[2023-01-09, 01:40:21 UTC] {base.py:73} INFO - Using connection ID 'google_cloud_default' for task execution.
[2023-01-09, 01:40:21 UTC] {credentials_provider.py:323} INFO - Getting connection using `google.auth.default()` since no key file is defined for hook.
[2023-01-09, 01:40:21 UTC] {_default.py:649} WARNING - No project ID could be determined. Consider running `gcloud config set project` or setting the GOOGLE_CLOUD_PROJECT environment variable
[2023-01-09, 01:40:21 UTC] {bigquery.py:1539} INFO - Inserting job ***_1673228421636668_2d2a9b688dcd63bef1c449cd8b764f86
[2023-01-09, 01:40:23 UTC] {bigquery.py:601} INFO - Record:   col_name check_type  check_result
0     col1        min             2
[2023-01-09, 01:40:23 UTC] {bigquery.py:628} INFO - All tests have passed
[2023-01-09, 01:40:23 UTC] {taskinstance.py:1339} INFO - Marking task as SUCCESS. dag_id=test_bigquery_column_check, task_id=check_columns, execution_date=20230108T000000, start_date=20230109T014019, end_date=20230109T014023
[2023-01-09, 01:40:23 UTC] {local_task_job.py:211} INFO - Task exited with return code 0
[2023-01-09, 01:40:23 UTC] {taskinstance.py:2613} INFO - 0 downstream tasks scheduled from follow-on schedule check

cc: @eladkal , @VladaZakharova , @denimalpaca

---

^ Add meaningful description above

Read the Pull Request Guidelines for more information.
In case of fundamental code changes, an Airflow Improvement Proposal (AIP) is needed.
In case of a new dependency, check compliance with the ASF 3rd Party License Policy.
In case of backwards incompatible changes please leave a note in a newsfragment file, named {pr_number}.significant.rst or {issue_number}.significant.rst, in newsfragments.

[uranusjr]

Looks like the oopssie happened here

87eb46b#diff-529929b4ca60ce73b8da0f45d8a5c43c2d4e391b913fe78b39892899f812951eL617