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: panics_test.go
    path of file: ./repos/conc/panics
    
    the code of the file until where you have to start completion: package panics_test

import (
	"errors"
	"fmt"
	"runtime"
	"sync"
	"testing"

	"github.com/sourcegraph/conc/panic
    
func TestCatcher(t *testing.T) {
	t.Parallel()

	err1 := errors.New("SOS")

	t.Run("error", func(t *testing.T) {
		t.Parallel()
		var pc panics.Catcher
		pc.Try(func() { panic(err1) })
		recovered := pc.Recovered()
		require.ErrorIs(t, recovered.AsError(), err1)
		require.ErrorAs(t, recovered.AsError(), &err1)
		// The exact contents aren't tested because the stacktrace contains local file paths
		// and even the structure of the stacktrace is bound to be unstable over time. Just
		// test a couple of basics.
		require.Contains(t, recovered.String(), "SOS", "formatted panic should contain the panic message")
		require.Contains(t, recovered.String(), "panics.(*Catcher).Try", recovered.String(), "formatted panic should contain the stack trace")
	})

	t.Run("not error", func(t *testing.T) {
		var pc panics.Catcher
		pc.Try(func() { panic("definitely not an error") })
		recovered := pc.Recovered()
		require.NotErrorIs(t, recovered.AsError(), err1)
		require.Nil(t, errors.Unwrap(recovered.AsError()))
	})

	t.Run("repanic panics", func(t *testing.T) {
		var pc panics.Catcher
		pc.Try(func() { panic(err1) })
		require.Panics(t, pc.Repanic)
	})

	t.Run("repanic does not panic without child panic", func(t *testing.T) {
		t.Parallel()
		var pc panics.Catcher
		pc.Try(func() { _ = 1 })
		require.NotPanics(t, pc.Repanic)
	})

	t.Run("is goroutine safe", func(t *testing.T) {
		t.Parallel()
		var wg sync.WaitGroup
		var pc panics.Catcher
		for i := 0; i < 100; i++ {
			i := i
			wg.Add(1)
			func() {
				defer wg.Done()
				pc.Try(func() {
					if i == 50 {
						panic("50")
					}

				})
			}()
		}
		wg.Wait()
		require.Equal(t, "50", pc.Recovered().Value)
	})
}