# import sys
# input = sys.stdin.readline
def mp():return map(int,input().split())
def lmp():return list(map(int,input().split()))
import math
import bisect
from copy import deepcopy as dc
from itertools import accumulate
from collections import Counter, defaultdict, deque
def ceil(U,V):return (U+V-1)//V
def modf1(N,MOD):return (N-1)%MOD+1
mod = int(1e9)+7

t = int(input())
for _ in range(t):
    n = int(input())
    a = lmp()
    for i in range(n):
        a[i] += 1
    ans = 1
    for i in a:
        ans *= i
        ans &= mod
    print(ans-1)