#include <bits/stdc++.h>
using namespace std;
#define ll long long int
 
int main() {
	int t;
	cin>>t;
	while(t--){
		int n;
		string s;
		cin>>n;
		cin>>s;
 
		int pointsCount=0;
		int len=0, maxLen=0;
 
		for(int i=0;i<n;i++){
			if(s[i]=='.'){
				len++;
				pointsCount++;
				maxLen=max(maxLen, len);
			} else {
				len=0;
			}
		}
 
		if(pointsCount==0){
			cout<<0<<endl;
			continue;
		} 
		if(maxLen < 3){
			cout<<pointsCount<<endl;
		} else {
			cout<<2<<endl;
		}
	}
	return 0;
}

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NQozCi4uLgo3CiMjLi4uLiMKNwouLiMuIy4uCjQKIyMjIwoxMAojLi4uIy4uIy4jCg==

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