check(h.attrs, Int("a", 1), Int("b", 2))
	check(attrsSlice(h.r), Int("c", 3))
}

func TestCallDepth(t *testing.T) {
	ctx := context.Background()
	h := &captureHandler{}
	var startLine int

	check := func(count int) {
		t.Helper()
		const wantFunc = "log/slog.TestCallDepth"
		const wantFile = "logger_test.go"
		wantLine := startLine + count*2
		got := h.r.source()