tests/infra/test_utils.py

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# This module contains tests for some of the tests/util code.

from tests.util.filesystem_utils import prepend_with_fs
from tests.util.parse_util import get_bytes_summary_stats_counter


def test_filesystem_utils():
  # Verify that empty FS prefix gives back the same path.
  path = "/fake-warehouse"
  assert prepend_with_fs("", path) == path

  # Verify that prepend_with_fs() is idempotent.
  fs = "fakeFs://bucket"
  path = "/fake-warehouse"
  assert prepend_with_fs(fs, path) == fs + path
  assert prepend_with_fs(fs, prepend_with_fs(fs, path)) == fs + path


def test_get_bytes_summary_stats_counter():
  """Test get_bytes_summary_stats_counter(counter_name, runtime_profile) using a dummy
     runtime profile.
  """
  runtime_profile = "- ExampleCounter: (Avg: 8.00 KB (8192) ; " \
                    "Min: 6.00 KB (6144) ; " \
                    "Max: 10.00 KB (10240) ; " \
                    "Number of samples: 4)"
  summary_stats = get_bytes_summary_stats_counter("ExampleCounter",
                                                  runtime_profile)
  assert len(summary_stats) == 1
  assert summary_stats[0].sum == 32768 and summary_stats[0].min_value == 6144 and \
         summary_stats[0].max_value == 10240 and summary_stats[0].total_num_values == 4