def test_health_check_works_with_resident_task():
"""Verifies that resident tasks (common for Persistent Volumes) do not fail health checks.
Marathon bug: https://jira.mesosphere.com/browse/MARATHON-7050
"""
app_def = apps.resident_docker_app()
app_id = app_def["id"]
client = marathon.create_client()
client.add_app(app_def)
common.deployment_wait(service_id=app_id, max_attempts=500)
tasks = client.get_tasks(app_def["id"])
assert len(tasks) == 1, "The number of tasks is {}, but 1 was expected".format(len(tasks))
assert_that(lambda: client.get_app(app_def['id']), eventually(has_value('tasksHealthy', 1), max_attempts=30))
def test_healtchcheck_and_volume():
"""Launches a Docker container on Marathon."""
app_def = apps.healthcheck_and_volume()
app_id = app_def["id"]
client = marathon.create_client()
client.add_app(app_def)
common.deployment_wait(service_id=app_id)
tasks = client.get_tasks(app_id)
app = client.get_app(app_id)
assert len(tasks) == 1, "The number of tasks is {} after deployment, but only 1 was expected".format(len(tasks))
assert len(app['container']['volumes']) == 2, "The container does not have the correct amount of volumes"
# check if app becomes healthy
assert_that(lambda: client.get_app(app_id), eventually(has_value('tasksHealthy', 1), max_attempts=30))
def test_task_failure_recovers():
"""Tests that if a task is KILLED, another one will be launched with a different ID."""
app_def = apps.sleep_app()
app_def['cmd'] = 'sleep 1000'
app_id = app_def["id"]
client = marathon.create_client()
client.add_app(app_def)
common.deployment_wait(service_id=app_id)
tasks = client.get_tasks(app_id)
old_task_id = tasks[0]['id']
host = tasks[0]['host']
common.kill_process_on_host(host, '[s]leep 1000')
assert_that(lambda: client.get_tasks(app_id)[0],
eventually(has_value('id', not_(equal_to(old_task_id))), max_attempts=30))