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import pytest

from tests.common.custom_cluster_test_suite import CustomClusterTestSuite
from tests.common.skip import SkipIfBuildType

@SkipIfBuildType.not_dev_build
class TestAllocFail(CustomClusterTestSuite):
  """Tests for handling malloc() failure for UDF/UDA"""

  @classmethod
  def get_workload(self):
    return 'functional-query'

  @pytest.mark.execute_serially
  @CustomClusterTestSuite.with_args("--stress_fn_ctx_alloc=1")
  def test_alloc_fail_init(self, vector):
    self.run_test_case('QueryTest/alloc-fail-init', vector)

  # TODO: Rewrite or remove the non-deterministic test.
  @pytest.mark.xfail(run=True, reason="IMPALA-2925: the execution is not deterministic "
                     "so some tests sometimes don't fail as expected")
  @pytest.mark.execute_serially
  @CustomClusterTestSuite.with_args("--stress_fn_ctx_alloc=3")
  def test_alloc_fail_update(self, vector, unique_database):
    # Note that this test relies on pre-aggregation to exercise the Serialize() path so
    # query option 'num_nodes' must not be 1. CustomClusterTestSuite.add_test_dimensions()
    # already filters out vectors with 'num_nodes' != 0 so just assert it here.
    assert vector.get_value('exec_option')['num_nodes'] == 0
    self.run_test_case('QueryTest/alloc-fail-update', vector, use_db=unique_database)