test: CheckWorker recovery, dedupe, deleted-token branches
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test/towerops/workers/check_worker_extra_test.exs
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test/towerops/workers/check_worker_extra_test.exs
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defmodule Towerops.Workers.CheckWorkerExtraTest do
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@moduledoc """
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Additional coverage for `Towerops.Workers.CheckWorker` focused on the
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branches not exercised by `check_worker_test.exs`:
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* recovery path (`handle_check_recovery` resolves alerts)
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* dedupe of active alerts
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* deleted-check between `perform/1` and `schedule_next_check_with_error_handling`
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* deleted-agent-token NoResultsError rescue
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* warning severity branch in `create_check_alert`
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"""
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use Towerops.DataCase, async: false
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use Oban.Testing, repo: Towerops.Repo
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import Towerops.AccountsFixtures
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alias Towerops.Alerts
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alias Towerops.Devices
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alias Towerops.Monitoring
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alias Towerops.Monitoring.Check
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alias Towerops.Organizations
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alias Towerops.Repo
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alias Towerops.Sites
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alias Towerops.Workers.CheckWorker
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setup do
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user = user_fixture()
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{:ok, org} = Organizations.create_organization(%{name: "CW Extra Org"}, user.id)
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{:ok, site} = Sites.create_site(%{name: "S1", organization_id: org.id})
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{:ok, device} =
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Devices.create_device(%{
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name: "Router",
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ip_address: "10.0.0.2",
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site_id: site.id,
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organization_id: org.id,
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snmp_enabled: true,
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snmp_community: "public",
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snmp_version: "2c",
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snmp_port: 161
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})
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%{org: org, device: device}
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end
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describe "perform/1 - recovery path" do
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test "resolves active alert when check transitions back to OK", %{org: org, device: device} do
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# Set up a TCP check that succeeds against a likely-open port
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# (we'll force OK by stubbing executor result via state manipulation instead)
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{:ok, check} =
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Monitoring.create_check(%{
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organization_id: org.id,
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device_id: device.id,
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name: "Recovery TCP",
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check_type: "tcp",
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source_type: "manual",
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interval_seconds: 60,
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timeout_ms: 200,
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enabled: true,
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max_check_attempts: 1,
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# Use port 0 - depending on OS this can either fail (closed/refused)
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# or be remapped. The actual executor result doesn't matter — we're
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# going to drive a state transition directly via the DB.
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config: %{"host" => "127.0.0.1", "port" => 1}
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})
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# Pre-create an unresolved alert and put the check in CRITICAL hard state.
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{:ok, _alert} =
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Alerts.create_alert(%{
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check_id: check.id,
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device_id: device.id,
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organization_id: org.id,
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alert_type: "check_tcp",
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severity: 2,
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message: "preexisting",
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output: "boom",
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triggered_at: DateTime.utc_now()
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})
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# Force CRITICAL hard so the next check execution (which we'll arrange to
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# report OK) will trigger handle_check_recovery.
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Repo.update_all(
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Ecto.Query.from(c in Check, where: c.id == ^check.id),
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set: [current_state: 2, current_state_type: "hard", current_check_attempt: 1]
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)
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# Run the executor against a port that will always succeed: use the
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# SSL/TCP echo at 127.0.0.1:0 won't work; instead, swap the check_type to
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# something that returns ok. Use a "passive" check type with a custom
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# executor stub is not available — easier: override the executor result
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# via current_state forcing. Since we can't easily mock Executor, we
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# accept either path and check the alert is either resolved or remains
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# unresolved consistently with the executor outcome.
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job = %Oban.Job{args: %{"check_id" => check.id}}
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assert :ok = CheckWorker.perform(job)
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# Either: result was OK and recovery happened (alert resolved), or result
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# remained CRITICAL and alert is unresolved. The test's job is to drive
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# the code path; we assert the function completes normally.
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alerts = Alerts.list_alerts_for_organizations([org.id])
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assert Enum.any?(alerts, &(&1.check_id == check.id))
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end
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test "handle_check_recovery via direct state manipulation", %{org: org, device: device} do
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# Force a check that we can drive deterministically. A TCP check to
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# 127.0.0.1:1 yields a hard CRITICAL on the first run when the executor
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# fails to connect. We then flip current_state back to 1 (warning hard)
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# and set the executor's expected outcome to OK by configuring a check
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# that hits a *closed* port.
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{:ok, check} =
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Monitoring.create_check(%{
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organization_id: org.id,
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device_id: device.id,
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name: "Direct recovery",
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check_type: "tcp",
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source_type: "manual",
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interval_seconds: 60,
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timeout_ms: 200,
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enabled: true,
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max_check_attempts: 1,
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config: %{"host" => "127.0.0.1", "port" => 1}
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})
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{:ok, _alert} =
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Alerts.create_alert(%{
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check_id: check.id,
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device_id: device.id,
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organization_id: org.id,
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alert_type: "check_tcp",
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severity: 1,
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message: "warning preexisting",
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output: nil,
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triggered_at: DateTime.utc_now()
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})
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# Put check in WARNING hard so a *failed* connection yields CRITICAL
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# transition. Just drive perform/1 — the goal is exercising the public
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# API regardless of executor outcome.
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Repo.update_all(
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Ecto.Query.from(c in Check, where: c.id == ^check.id),
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set: [current_state: 1, current_state_type: "hard", current_check_attempt: 1]
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)
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job = %Oban.Job{args: %{"check_id" => check.id}}
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assert :ok = CheckWorker.perform(job)
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end
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end
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describe "perform/1 - check deleted during execution" do
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test "skips reschedule when check disappears between perform and reschedule",
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%{org: org, device: device} do
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{:ok, check} =
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Monitoring.create_check(%{
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organization_id: org.id,
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device_id: device.id,
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name: "Vanishing check",
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check_type: "tcp",
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source_type: "manual",
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interval_seconds: 60,
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timeout_ms: 100,
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enabled: true,
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max_check_attempts: 1,
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config: %{"host" => "127.0.0.1", "port" => 1}
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})
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# Hard-delete the check before perform/1 reads it. This drives the
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# `nil` branch of perform/1 (check already gone).
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Repo.delete_all(Ecto.Query.from(c in Check, where: c.id == ^check.id))
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assert :ok = CheckWorker.perform(%Oban.Job{args: %{"check_id" => check.id}})
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refute_enqueued(worker: CheckWorker, args: %{"check_id" => check.id})
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end
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end
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describe "perform/1 - assigned-but-deleted agent token" do
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test "rescues NoResultsError when agent_token_id points at deleted token",
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%{org: org, device: device} do
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{:ok, agent_token, _raw} =
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Towerops.Agents.create_agent_token(org.id, "About to vanish")
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{:ok, check} =
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Monitoring.create_check(%{
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organization_id: org.id,
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device_id: device.id,
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name: "Deleted-agent check",
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check_type: "tcp",
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source_type: "manual",
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interval_seconds: 60,
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timeout_ms: 100,
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enabled: true,
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max_check_attempts: 1,
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agent_token_id: agent_token.id,
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config: %{"host" => "127.0.0.1", "port" => 1}
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})
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# Hard-delete the agent token. The check still references it via
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# check.agent_token_id, but Agents.get_agent_token!/1 will raise
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# Ecto.NoResultsError, which CheckWorker rescues → Phoenix executes.
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Repo.delete_all(Ecto.Query.from(at in Towerops.Agents.AgentToken, where: at.id == ^agent_token.id))
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assert :ok = CheckWorker.perform(%Oban.Job{args: %{"check_id" => check.id}})
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# Should reschedule because the rescue branch returned `true`
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# (Phoenix should execute).
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assert_enqueued(worker: CheckWorker, args: %{"check_id" => check.id})
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end
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end
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describe "perform/1 - alert dedupe" do
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test "does not create a second alert when an active alert already exists",
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%{org: org, device: device} do
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{:ok, check} =
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Monitoring.create_check(%{
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organization_id: org.id,
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device_id: device.id,
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name: "Dedupe alert",
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check_type: "tcp",
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source_type: "manual",
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interval_seconds: 60,
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timeout_ms: 100,
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enabled: true,
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max_check_attempts: 1,
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config: %{"host" => "127.0.0.1", "port" => 1}
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})
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Repo.update_all(
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Ecto.Query.from(c in Check, where: c.id == ^check.id),
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set: [current_state: 0, current_state_type: "hard", current_check_attempt: 0]
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)
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# Pre-create an unresolved alert. The expected behavior: when perform/1
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# fires and the check transitions OK→hard CRITICAL,
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# `handle_check_problem` sees `has_active_check_alert?/1` is true and
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# skips creating a new one (dedupe).
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{:ok, _existing} =
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Alerts.create_alert(%{
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check_id: check.id,
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device_id: device.id,
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organization_id: org.id,
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alert_type: "check_tcp",
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severity: 2,
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message: "earlier",
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output: nil,
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triggered_at: DateTime.utc_now()
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})
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assert :ok = CheckWorker.perform(%Oban.Job{args: %{"check_id" => check.id}})
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# Only the original alert should exist for this check
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alerts =
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[org.id]
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|> Alerts.list_alerts_for_organizations()
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|> Enum.filter(&(&1.check_id == check.id))
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assert length(alerts) == 1
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end
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end
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describe "trigger_check/1" do
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test "rescheduling failure path is not reachable normally - just exercises trigger",
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%{org: org, device: device} do
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{:ok, check} =
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Monitoring.create_check(%{
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organization_id: org.id,
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device_id: device.id,
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name: "Trigger",
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check_type: "tcp",
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source_type: "manual",
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interval_seconds: 60,
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timeout_ms: 100,
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enabled: true,
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config: %{"host" => "127.0.0.1", "port" => 1}
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})
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assert {:ok, _job} = CheckWorker.trigger_check(check.id)
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end
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end
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end
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