#include <bits/stdc++.h>
using namespace std;

#define qmx(a,b) a<b?b:a
#define qmn(a,b) a>b?b:a
#define ll long long
#define fr first
#define se second
#define pir pair< pair<int, int>, pair<int, int> > 

const int mxn = 1e3+3;

char mp[mxn][mxn];

//bool vis[mxn][mxn];

int n, m, cntn;

vector < pair<int, int> > xyz;

map < pir , bool > res, vis;

bool outBound(int inx, int iny){
    return inx < 1 || iny < 1 || inx > n || iny > m;
}

void dodel(int dx, int dy, int sx, int sy){
    pir XYZ = make_pair(make_pair(dx, dy), make_pair(sx, sy));
    if(vis[XYZ])
        return;
    vis[XYZ] = true;
    if(outBound(dx, dy) || mp[dx][dy] == 'O'){
        return;
    }
    res[XYZ] = true;
    dodel(dx - 1, dy, sx - 1, sy);
    dodel(dx, dy - 1, sx, sy - 1);
    dodel(dx + 1, dy, sx + 1, sy);
    dodel(dx, dy + 1, sx, sy + 1);
}

bool trydel(int dx, int dy, int sx, int sy, int step){
    pir XYZ = make_pair(make_pair(dx, dy), make_pair(sx, sy));
    if(vis[XYZ]){
        return res[XYZ];
    }
    vis[XYZ] = true;
    if(outBound(dx, dy) || mp[dx][dy] == 'O'){
        return (res[XYZ] = false);
    }
    if(outBound(sx, sy) || mp[sx][sy] == 'O'){
        return (res[XYZ] = true);
    }
    bool r[4];
    res[XYZ] = false;
    r[0] = trydel(dx - 1, dy, sx - 1, sy, step + 1);
    r[1] = trydel(dx, dy - 1, sx, sy - 1, step + 1);
    r[2] = trydel(dx + 1, dy, sx + 1, sy, step + 1);
    r[3] = trydel(dx, dy + 1, sx, sy + 1, step + 1);
    res[XYZ] = r[0] | r[1] | r[2] | r[3];
    if(step && !res[XYZ])
        vis[XYZ] = false;
    if(res[XYZ]){
        if(!r[0])
            dodel(dx - 1, dy, sx - 1, sy);
        if(!r[1])
            dodel(dx, dy - 1, sx, sy - 1);
        if(!r[2])
            dodel(dx + 1, dy, sx + 1, sy);
        if(!r[3])
            dodel(dx, dy + 1, sx, sy + 1);
    }
    return res[XYZ];
}

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0), cout.tie(0);
    bool fail;
    int test, ans;
    cin>>test;
    while(test--){
        cntn = 0;
        ans = 0;
        xyz.clear();
        vis.clear();
        res.clear();
        cin >> n >> m;
        for(int i = 1 ; i <= n ; i++){
            for(int j = 1 ; j <= m ; j++){
                cin >> mp[i][j];
                if(mp[i][j] == '.'){
                    cntn++;
                    xyz.push_back(make_pair(i, j));
                }
            }
        }
        for(int i = 0 ; i < cntn ; i++){
            fail = false;
            for(int j = 0 ; j < cntn ; j++){
                if(i != j){
                    if(!trydel(xyz[i].first, xyz[i].second, xyz[j].first, xyz[j].second, 0)){
                        fail = true;
                        break;
                    }
                }
            }
            if(!fail){
                ans++;
            }
        }
        cout << ans << "\n";
    }
    return 0;
}