#include <iostream>
#include <string>
#include <vector>
#include <queue>
#include <utility>
#include<set>
#define encode(x,y) ((x+n+1)*((m<<1)+1)+y+m+1)
using namespace std;
const int way[4][2] = {{-1, 0}, {0, -1}, {0, 1}, {1, 0}};
int main()
{
     int t, ti;
     //freopen("input.in","r",stdin);
     ios::sync_with_stdio(false);
     cin.tie(nullptr);
     cin >> t;
     for (ti = 1; ti <= t; ++ti)
     {
          int n, m, i, j, cnt1 = 0;
          cin >> n >> m;
          vector<vector<int>> a(n + 1, vector<int>(m + 1));
          vector<vector<int>> b(n + 1, vector<int>(m + 1,-1));
          for (i = 1; i <= n; ++i)
          {
               string s;
               cin >> s;
               for (j = 0; j < m; ++j)
                    if (s[j] == '.')
                         a[i][j + 1] = 1; // 1 means empty area
                    else
                         a[i][j + 1] = 0; // 0 means unexisted way
          }
          vector<vector<pair<int, int>>> all_block;
          for (i = 1; i <= n; ++i)
               for (j = 1; j <= m; ++j)
                    if (a[i][j] == 1 && b[i][j] == -1)
                    {
                         auto bfs = [&]()
                         {
                              queue<pair<int, int>> q;
                              vector<pair<int, int>> new_block;
                              q.push({i, j});
                              b[i][j] = cnt1;
                              new_block.push_back({i, j});
                              while (q.empty() == false)
                              {
                                   const auto [x, y] = q.front();
                                   q.pop();
                                   for (int k = 0; k < 4; ++k)
                                   {
                                        const int nx = x + way[k][0], ny = y + way[k][1];
                                        if (not (nx>=1 && nx<=n && ny>=1 && ny<=m)) continue;
                                        if (a[nx][ny] == 1 && b[nx][ny] == -1)
                                        {
                                             q.push({nx, ny});
                                             b[nx][ny] = cnt1;
                                             new_block.push_back({nx, ny});
                                        }
                                   }
                              }
                              all_block.push_back(new_block);
                         };
                         bfs();
                         ++cnt1;
                    }
          vector<set<int> > c;
          for (i=1;i<=n;++i)
               for (j=1;j<=m;++j)
                    if (a[i][j]==1)
                         {
                         int idx=b[i][j];
                         set<int> s;
                         for (auto [x,y]:all_block[idx])
                              s.insert(encode(x-i,y-j));
                         c.push_back(s);
                         }
          int ans=0;
          for (i=0;i<c.size();++i)
               {
               int oppo=c.size()-1;
               for (j=0;j<c.size();++j)
                    {
                    if (i==j) continue;
                    for (const auto point:c[i])
                         if (c[j].count(point)==0)
                              {
                              oppo-=1;
                              break;
                              }
                    }
               if (oppo==0) ++ans;
               }
          cout<<ans<<"\n";
     }
     return 0;
}