#include <cstdio>
#include <cstring>
#include <iostream>
#include <string>
#include <cmath>
#include <bitset>
#include <vector>
#include <map>
#include <set>
#include <queue>
#include <deque>
#include <algorithm>
#include <complex>
#include <unordered_map>
#include <unordered_set>
#include <random>
#include <cassert>
#include <fstream>
#include <utility>
#include <functional>
#include <stack>
#include <array>
#include <list>
#define popcount __builtin_popcount
using namespace std;
typedef long long int ll;
typedef pair<int, int> P;

int main()
{
    int t; cin>>t;
    const ll MOD=1e9+7;
    while(t--){
        int n; cin>>n;
        ll a[101];
        for(int i=0; i<n; i++){
            cin>>a[i];
        }
        ll p=1;
        for(int i=0; i<n; i++) (p*=(a[i]+1))%=MOD;
        p=(p+MOD-1)%MOD;
        cout<<p<<endl;
    }
    return 0;
}