#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll,ll> PII;
const ll N = 1e3 + 10;
char a[N][N];
ll vis[N][N];
set<PII> tu[N];
ll tot;
ll zx[5] = {0, 1, -1, 0, 0};
ll zy[5] = {0, 0, 0, 1, -1};
ll xx, yy;
ll n, m;
void dfs(ll x, ll y){
    tu[tot].insert(make_pair(x - xx, y - yy));
    vis[x][y] = 1;
    for(ll i = 1; i <= 4; i++){
        ll tx = x + zx[i];
        ll ty = y + zy[i];
        if(tx < 1 || tx > n || ty < 1 || ty > m) continue;
        if(!vis[tx][ty] && a[tx][ty] == '.'){
            dfs(tx, ty);
        }
    }
}
ll bh[N][N];
ll pd(ll i, ll j){
    for(auto x: tu[j]){
        ll flg = 0;
        for(auto y: tu[i]){
            ll newx = x.first + y.first;
            ll newy = x.second + y.second;
            if(tu[j].find(make_pair(newx, newy)) == tu[j].end()){
                flg = 1;
                break;
            }
        }
        if(!flg) return 0;
    }
    return 1;
}
int main(){
    ll t;
    cin >> t;
    while (t--){
        ll f = 0;
        cin >> n >> m;
        // cout << tu[1].size() << endl;
        for (ll i = 1; i <= n; i++){
            for (ll j = 1; j <= m; j++){
                cin >> a[i][j]; 
            }
        }
        tot = 0;
        for (ll i = 1; i <= n; i++){
            for (ll j = 1; j <= m; j++){
                if (!vis[i][j] && a[i][j] == '.'){
                    tot++;
                    xx = i;
                    yy = j;
                    dfs(i, j);
                }
           }
        }
        for(ll i = 1; i <= tot; i++){
            for(ll j = 1; j <= tot; j++){
                if(i == j) continue;
                if(pd(j, i)){
                    bh[i][j] = 1; //i可以kill j
                }
            }
        }
        ll ans = 0;
        for(ll i = 1; i <= tot; i++){
            ll flg = 0;
            for(ll j = 1; j <= tot; j++){
                if(i == j) continue;
                if(bh[i][j] == 1){
                    continue;
                }
                flg = 1;
            }
            if(!flg){
                ans += tu[i].size();
                f = 1;
            }
        }
        if(!f) cout << 0 << endl;
        else cout << ans << endl;
        for(ll i = 1; i <= tot; i++){
            // cout << "cao" << endl;
            tu[i].clear();
            // cout << tu[i].size() << endl; 
        }
        for(ll i = 1; i <= tot; i++){
            for(ll j = 1; j <= tot; j++){
                bh[i][j] = 0;
            }
        }
        for(ll i = 1; i <= n; i++){
            for(ll j = 1; j <= m; j++){
                vis[i][j] = 0;
            }
        }
        // cout << "?" << endl;

    }
    return 0;
}