You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: run_test.go
    path of file: ./repos/coder/scaletest/placebo
    
    the code of the file until where you have to start completion: package placebo_test

import (
	"bytes"
	"context"
	"io"
	"testing"
	"time"

	"github.com/stretchr/testify/require"

	"github.com/coder/coder/v2/coderd/httpapi"
	"github.com/coder/coder/v2/scaletest/placebo"
)

func Test_Runner(t *testing.T) {
	t.Skip("This test is flakey, see https://github.com/coder/coder/actions/runs/3463709674/jobs/5784335013#step:9:215")
	t.Parallel()

	t.Run("NoSleep", func(t *testing.T) {
		t.Parallel()

		r := placebo.NewRunner(placebo.Config{})
		start := time.Now()
		
    
func Test_Runner(t *testing.T) {
	t.Skip("This test is flakey, see https://github.com/coder/coder/actions/runs/3463709674/jobs/5784335013#step:9:215")
	t.Parallel()

	t.Run("NoSleep", func(t *testing.T) {
		t.Parallel()

		r := placebo.NewRunner(placebo.Config{})
		start := time.Now()
		logs := bytes.NewBuffer(nil)
		err := r.Run(context.Background(), "", logs)
		require.NoError(t, err)

		require.WithinDuration(t, time.Now(), start, 100*time.Millisecond)
		require.Empty(t, logs.String())
	})

	t.Run("Sleep", func(t *testing.T) {
		t.Parallel()

		r := placebo.NewRunner(placebo.Config{
			Sleep: httpapi.Duration(100 * time.Millisecond),
		})

		start := time.Now()
		logs := bytes.NewBuffer(nil)
		err := r.Run(context.Background(), "", logs)
		require.NoError(t, err)

		require.WithinRange(t, time.Now(), start.Add(90*time.Millisecond), start.Add(200*time.Millisecond))
		require.Contains(t, logs.String(), "sleeping for 100ms")
	})

	t.Run("Jitter", func(t *testing.T) {
		t.Parallel()

		r := placebo.NewRunner(placebo.Config{
			Sleep:  httpapi.Duration(100 * time.Millisecond),
			Jitter: httpapi.Duration(100 * time.Millisecond),
		})

		start := time.Now()
		logs := bytes.NewBuffer(nil)
		err := r.Run(context.Background(), "", logs)
		require.NoError(t, err)

		require.WithinRange(t, time.Now(), start.Add(90*time.Millisecond), start.Add(300*time.Millisecond))
		logsStr := logs.String()
		require.Contains(t, logsStr, "sleeping for")
		require.NotContains(t, logsStr, "sleeping for 100ms")
	})

	t.Run("Timeout", func(t *testing.T) {
		t.Parallel()

		r := placebo.NewRunner(placebo.Config{
			Sleep: httpapi.Duration(100 * time.Millisecond),
		})

		//nolint:gocritic // we're testing timeouts here so we want specific values
		ctx, cancel := context.WithTimeout(context.Background(), 50*time.Millisecond)
		defer cancel()

		err := r.Run(ctx, "", io.Discard)
		require.Error(t, err)
		require.ErrorIs(t, err, context.DeadlineExceeded)
	})

	t.Run("FailureChance", func(t *testing.T) {
		t.Parallel()

		r := placebo.NewRunner(placebo.Config{
			FailureChance: 1,
		})

		logs := bytes.NewBuffer(nil)
		err := r.Run(context.Background(), "", logs)
		require.Error(t, err)
		require.Contains(t, logs.String(), ":(")
	})
}