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# to you under the Apache License, Version 2.0 (the
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#   http://www.apache.org/licenses/LICENSE-2.0
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# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.

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

from __future__ import absolute_import, division, print_function

from tests.common.base_test_suite import BaseTestSuite
from tests.util.filesystem_utils import prepend_with_fs
from tests.util.parse_util import get_bytes_summary_stats_counter, \
    get_time_summary_stats_counter


class TestUtils(BaseTestSuite):

  def test_filesystem_utils(self):
    # 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(self):
    """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) ; " \
                      "Sum: 32 KB (32768) ; " \
                      "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

  def test_get_time_summary_stats_counter(self):
    """Test get_time_summary_stats_counter(counter_name, runtime_profile) using a dummy
       runtime profile.
    """
    # This is constructed to test the parsing logic for timestamps, so the number don't
    # add up.
    runtime_profile = "- ExampleTimeStats: (Avg: 161.554ms ; " \
                      "Min: 101.411us ; " \
                      "Max: 1h2m3s4ms5us6ns ; " \
                      "Number of samples: 6)"
    summary_stats = get_time_summary_stats_counter("ExampleTimeStats", runtime_profile)
    assert len(summary_stats) == 1
    assert summary_stats[0].sum == 969324000
    assert summary_stats[0].min_value == 101411
    assert summary_stats[0].max_value == 3723004005006
    assert summary_stats[0].total_num_values == 6