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import pytest
import pexpect
import os

from tests.common.custom_cluster_test_suite import CustomClusterTestSuite
from tests.common.test_vector import ImpalaTestVector
from tests.common.test_dimensions import create_client_protocol_dimension
from tests.shell.util import get_shell_cmd, get_impalad_port, spawn_shell


class TestShellInteractive(CustomClusterTestSuite):

  @pytest.mark.execute_serially
  @CustomClusterTestSuite.with_args(impalad_args="-default_pool_max_requests 1")
  def test_admission_status(self):
    """Test whether the admission status gets printed if a query gets queued when
    either live_summary or live_progress is set to true"""
    expected_admission_status = "Query queued. Latest queuing reason: " \
                                "number of running queries 1 is at or over limit 1"
    # Start a long running query so that the next one gets queued.
    sleep_query_handle = self.client.execute_async("select sleep(10000)")
    self.client.wait_for_admission_control(sleep_query_handle)

    # Iterate over test vector within test function to avoid restarting cluster.
    for vector in\
        [ImpalaTestVector([value]) for value in create_client_protocol_dimension()]:
      proc = spawn_shell(get_shell_cmd(vector))
      # Check with only live_summary set to true.
      proc.expect("{0}] default>".format(get_impalad_port(vector)))
      proc.sendline("set live_summary=true;")
      proc.sendline("select 1;")
      proc.expect(expected_admission_status)
      proc.sendcontrol('c')
      proc.expect("Cancelling Query")
      # Check with only live_progress set to true.
      proc.sendline("set live_summary=false;")
      proc.sendline("set live_progress=true;")
      proc.sendline("select 1;")
      proc.expect(expected_admission_status)