paimon-python/pypaimon/tests/native_test_instrumentation_test.py

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"""Native CI instrumentation preserves the public mutation API."""

import importlib.util
import inspect
from pathlib import Path
from types import SimpleNamespace
from unittest.mock import Mock

import pytest

from pypaimon.snapshot.snapshot import BATCH_COMMIT_IDENTIFIER
from pypaimon.write.table_commit import BatchTableCommit, TableCommit

pytestmark = [pytest.mark.python_plan, pytest.mark.python_read,
              pytest.mark.python_write, pytest.mark.python_commit]


def test_native_write_tracking_preserves_signature_and_forwards_bucket(monkeypatch):
    from pypaimon.execution.native.write.native_write import NativeTableWrite

    path = Path(__file__).resolve().parents[2] / 'conftest.py'
    spec = importlib.util.spec_from_file_location('native_write_instrumentation', str(path))
    instrumentation = importlib.util.module_from_spec(spec)
    spec.loader.exec_module(instrumentation)
    for key in ('PLAN', 'READ', 'COMMIT', 'UPDATE'):
        monkeypatch.setenv('PYPAIMON_TEST_NATIVE_' + key, '0')
    monkeypatch.setenv('PYPAIMON_TEST_NATIVE_WRITE', '1')
    calls = []
    result = object()

    def write_arrow_batch(self, data, bucket=None):
        calls.append((data, bucket))
        return result

    monkeypatch.setattr(NativeTableWrite, 'write_arrow_batch', write_arrow_batch)
    instrumentation.pytest_configure(Mock())
    instrumentation._force_native_write_for_test = True
    assert inspect.signature(NativeTableWrite.write_arrow_batch) == inspect.signature(write_arrow_batch)
    data = SimpleNamespace(num_rows=1)
    writer = SimpleNamespace(_native_writer=object())
    assert NativeTableWrite.write_arrow_batch(writer, data, bucket=7) is result
    assert calls == [(data, 7)]
    assert instrumentation._native_write_count == 1


@pytest.mark.parametrize('operation,args', [
    ('truncate_table', ()), ('truncate_partitions', ([{'pt': 'a'}],)),
])
@pytest.mark.parametrize('fail', [False, True])
def test_native_commit_tracking_forwards_batch_truncate(monkeypatch, operation, args, fail):
    # Load the actual CI hook in isolation. Its patches are scoped to this test
    # and must not replace the surrounding pytest session's counters.
    path = Path(__file__).resolve().parents[2] / 'conftest.py'
    spec = importlib.util.spec_from_file_location('native_instrumentation', str(path))
    instrumentation = importlib.util.module_from_spec(spec)
    spec.loader.exec_module(instrumentation)
    for key in ('PLAN', 'READ', 'WRITE', 'UPDATE'):
        monkeypatch.setenv('PYPAIMON_TEST_NATIVE_' + key, '0')
    monkeypatch.setenv('PYPAIMON_TEST_NATIVE_COMMIT', '1')
    backend = Mock()
    calls = []

    def prepare(self, messages, *, batch=False):
        calls.append((messages, batch))
        return backend, []

    monkeypatch.setattr(TableCommit, '_prepare_native_commit', prepare)
    instrumentation.pytest_configure(Mock())
    instrumentation._force_native_commit_for_test = True
    commit = object.__new__(BatchTableCommit)
    commit.batch_committed = False
    commit.overwrite_partition = None
    commit.file_store_commit = Mock()
    error = RuntimeError('snapshot may already have published')
    if fail:
        getattr(backend, operation).side_effect = error
        with pytest.raises(RuntimeError) as raised:
            getattr(commit, operation)(*args)
        assert raised.value is error
    else:
        getattr(commit, operation)(*args)
    assert calls == [([], True)]
    assert instrumentation._native_commit_count == 1
    getattr(backend, operation).assert_called_once_with(*args, BATCH_COMMIT_IDENTIFIER)
    commit.file_store_commit.truncate_table.assert_not_called()
    commit.file_store_commit.drop_partitions.assert_not_called()