wantJSON: "{}",
		},
		{
			name:     "remove built-in",
			replace:  removeKeys(TimeKey, LevelKey, MessageKey),
			attrs:    attrs,
			wantText: "a=one b=2",
			wantJSON: `{"a":"one","b":2}`,
		},
		{
			name:     "preformatted remove built-in",
			replace:  removeKeys(TimeKey, LevelKey, MessageKey),
			with:     func(h Handler) Handler { return h.WithAttrs(preAttrs) },
			attrs:    attrs,

}

var cases = []testCase{
	{
		name:        "built-ins",
		explanation: withSource("this test expects slog.TimeKey, slog.LevelKey and slog.MessageKey"),
		f: func(l *slog.Logger) {
			l.Info("message")
		},
		checks: []check{
			hasKey(slog.TimeKey),
			hasKey(slog.LevelKey),
			hasAttr(slog.MessageKey, "message"),
		},
	},
	{
		name:        "attrs",

			if a.Key == slog.TimeKey {
				return slog.Attr{}
			}

			// Customize the name of the level key and the output string, including
			// custom level values.
			if a.Key == slog.LevelKey {
				// Rename the level key from "level" to "sev".
				a.Key = "sev"

				// Handle custom level values.
				level := a.Value.Any().(slog.Level)

	// TimeKey is the key used by the built-in handlers for the time
	// when the log method is called. The associated Value is a [time.Time].
	TimeKey = "time"
	// LevelKey is the key used by the built-in handlers for the level
	// of the log call. The associated value is a [Level].
	LevelKey = "level"
	// MessageKey is the key used by the built-in handlers for the
	// message of the log call. The associated value is a string.
	MessageKey = "msg"

	WarnLevel:  zapcore.WarnLevel,
	ErrorLevel: zapcore.ErrorLevel,
	FatalLevel: zapcore.FatalLevel,
	NoneLevel:  none,
}

var defaultEncoderConfig = zapcore.EncoderConfig{
	TimeKey:        "time",
	LevelKey:       "level",
	NameKey:        "scope",
	CallerKey:      "caller",
	MessageKey:     "msg",
	StacktraceKey:  "stack",
	LineEnding:     zapcore.DefaultLineEnding,
	EncodeLevel:    zapcore.LowercaseLevelEncoder,

			for level, intermediates := range test.intermediates {
				levelKey := privateKeys.Get().(*ecdsa.PrivateKey)
				keys = append(keys, levelKey)
				levelName := "Intermediate level " + strconv.Itoa(level)
				var last *Certificate

				for _, intermediate := range intermediates {
					caCert, err := makeConstraintsCACert(intermediate, levelName, levelKey, parent, parentKey)
					if err != nil {

pkg log/slog, const LevelError = 8 #56345
pkg log/slog, const LevelError Level #56345
pkg log/slog, const LevelInfo = 0 #56345
pkg log/slog, const LevelInfo Level #56345
pkg log/slog, const LevelKey ideal-string #56345
pkg log/slog, const LevelKey = "level" #56345
pkg log/slog, const LevelWarn = 4 #56345
pkg log/slog, const LevelWarn Level #56345
pkg log/slog, const MessageKey ideal-string #56345
pkg log/slog, const MessageKey = "msg" #56345

		{"KindString", Const, 21},
		{"KindTime", Const, 21},
		{"KindUint64", Const, 21},
		{"Level", Type, 21},
		{"LevelDebug", Const, 21},
		{"LevelError", Const, 21},
		{"LevelInfo", Const, 21},
		{"LevelKey", Const, 21},
		{"LevelVar", Type, 21},
		{"LevelWarn", Const, 21},
		{"Leveler", Type, 21},
		{"Log", Func, 21},
		{"LogAttrs", Func, 21},
		{"LogValuer", Type, 21},
		{"Logger", Type, 21},