chore: QoL improvements to tests (#7917)

- Use mock helper functions, instead of home-brew solutions.
- Disable cron jobs that are not important to be run during integration tests and might even interfere.
- Avoid sleeping unnecessary, if there's some requirement then sleep or retry until that requirement is met.
- Avoid trying to deliver webhooks that will always result in a failure.

Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/7917
Reviewed-by: Michael Kriese <michael.kriese@gmx.de>
Co-authored-by: Gusted <postmaster@gusted.xyz>
Co-committed-by: Gusted <postmaster@gusted.xyz>

tests/integration/actions_runner_test.go

@@ -101,28 +101,26 @@ func (r *mockRunner) fetchTask(t *testing.T, timeout ...time.Duration) *runnerv1
 	if len(timeout) > 0 {
 		fetchTimeout = timeout[0]
 	}
-	ddl := time.Now().Add(fetchTimeout)
+
 	var task *runnerv1.Task
-	for time.Now().Before(ddl) {
+	assert.Eventually(t, func() bool {
 		resp, err := r.client.runnerServiceClient.FetchTask(t.Context(), connect.NewRequest(&runnerv1.FetchTaskRequest{
 			TasksVersion: 0,
 		}))
 		require.NoError(t, err)
 		if resp.Msg.Task != nil {
 			task = resp.Msg.Task
-			break
+			return true
 		}
-		time.Sleep(time.Second)
-	}
-	assert.NotNil(t, task, "failed to fetch a task")
+		return false
+	}, fetchTimeout, time.Millisecond*100, "failed to fetch a task")
 	return task
 }
 
 type mockTaskOutcome struct {
-	result   runnerv1.Result
-	outputs  map[string]string
-	logRows  []*runnerv1.LogRow
-	execTime time.Duration
+	result  runnerv1.Result
+	outputs map[string]string
+	logRows []*runnerv1.LogRow
 }
 
 func (r *mockRunner) execTask(t *testing.T, task *runnerv1.Task, outcome *mockTaskOutcome) {
@@ -149,7 +147,6 @@ func (r *mockRunner) execTask(t *testing.T, task *runnerv1.Task, outcome *mockTa
 		sentOutputKeys = append(sentOutputKeys, outputKey)
 		assert.ElementsMatch(t, sentOutputKeys, resp.Msg.SentOutputs)
 	}
-	time.Sleep(outcome.execTime)
 	resp, err := r.client.runnerServiceClient.UpdateTask(t.Context(), connect.NewRequest(&runnerv1.UpdateTaskRequest{
 		State: &runnerv1.TaskState{
 			Id:        task.Id,