import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;

class Stars {
public static void main(String[] args) throws NumberFormatException, IOException {
int t = Integer.parseInt(br.readLine());
while (t-- > 0) {

String[] dimensions = br.readLine().split(" ");
int x = Integer.parseInt(dimensions[0]), y = Integer.parseInt(dimensions[1]);

char[][] sky = new char[x][y];
for(int i = 0; i < x; i++)
sky[i] = br.readLine().toCharArray();

int stars = 0;

for(int i = 0; i < x; i++)
for(int j = 0; j < y; j++)
if (sky[i][j] == '*') stars++;

if (x == 1 && y == 1)
; // do nothing

else if (x == 1 && y != 1) {
for(int j = 1; j < y; j++)
if (sky[0][j] == '*' && sky[0][j] == sky[0][j - 1]) stars--;
}

else if (x != 1 && y == 1) {
for(int i = 1; i < x; i++)
if (sky[i][0] == '*' && sky[i][0] == sky[i - 1][0]) stars--;
}

else {
boolean visited[][] = new boolean[x][y];
for(int i = 0; i < x; i++)
for(int j = 0; j < y; j++)
if (sky[i][j] == '*') stars = count(visited, sky, i, j, stars, x, y);
}
out.println(stars);
}
out.flush();
}

public static int count(boolean[][] visited, char[][] sky, int i, int j, int stars, int x, int y) {
visited[i][j] = true;
if (i == 0 && j == 0) {
if (sky[0][1] == '*' && !visited[0][1]) {
stars--;
stars = count(visited, sky, 0, 1, stars, x, y);
}
if (sky[1][1] == '*' && !visited[1][1]) {
stars--;
stars = count(visited, sky, 1, 1, stars, x, y);
}
if (sky[1][0] == '*' && !visited[1][0]) {
stars--;
stars = count(visited, sky, 1, 0, stars, x, y);
}
}
else if (i == x - 1 && j == 0) {
if (sky[i - 1][0] == '*' && !visited[i - 1][0]) {
stars--;
stars = count(visited, sky, i - 1, 0, stars, x, y);
}
if (sky[i - 1][1] == '*' && !visited[i - 1][1]) {
stars--;
stars = count(visited, sky, i - 1, 1, stars, x, y);
}
if (sky[i][1] == '*' && !visited[i][1]) {
stars--;
stars = count(visited, sky, i, 1, stars, x, y);
}
}
else if (i == 0 && j == y - 1) {
if (sky[0][j - 1] == '*' && !visited[0][j - 1]) {
stars--;
stars = count(visited, sky, 0, j - 1, stars, x, y);
}
if (sky[1][j - 1] == '*' && !visited[1][j - 1]) {
stars--;
stars = count(visited, sky, 1, j - 1, stars, x, y);
}
if (sky[1][j] == '*' && !visited[1][j]) {
stars--;
stars = count(visited, sky, 1, j, stars, x, y);
}
}
else if (i == x - 1 && j == y - 1) {
if (sky[i][j - 1] == '*' && !visited[i][j - 1]) {
stars--;
stars = count(visited, sky, i, j - 1, stars, x, y);
}
if (sky[i - 1][j - 1] == '*' && !visited[i - 1][j - 1]) {
stars--;
stars = count(visited, sky, i - 1, j - 1, stars, x, y);
}
if (sky[i - 1][j] == '*' && !visited[i - 1][j]) {
stars--;
stars = count(visited, sky, i - 1, j, stars, x, y);
}
}
else if (i == 0 && j > 0 && j < y - 1) {
if (sky[0][j - 1] == '*' && !visited[0][j - 1]) {
stars--;
stars = count(visited, sky, 0, j - 1, stars, x, y);
}
if (sky[0][j + 1] == '*' && !visited[0][j + 1]) {
stars--;
stars = count(visited, sky, 0, j + 1, stars, x, y);
}
if (sky[1][j - 1] == '*' && !visited[1][j - 1]) {
stars--;
stars = count(visited, sky, 1, j - 1, stars, x, y);
}
if (sky[1][j] == '*' && !visited[1][j]) {
stars--;
stars = count(visited, sky, 1, j, stars, x, y);
}
if (sky[1][j + 1] == '*' && !visited[1][j + 1]) {
stars--;
stars = count(visited, sky, 1, j + 1, stars, x, y);
}
}
else if (i > 0 && i < x - 1 && j == 0) {
if (sky[i - 1][0] == '*' && !visited[i - 1][0]) {
stars--;
stars = count(visited, sky, i - 1, 0, stars, x, y);
}
if (sky[i + 1][0] == '*' && !visited[i + 1][0]) {
stars--;
stars = count(visited, sky, i + 1, 0, stars, x, y);
}
if (sky[i - 1][1] == '*' && !visited[i - 1][1]) {
stars--;
stars = count(visited, sky, i - 1, 1, stars, x, y);
}
if (sky[i][1] == '*' && !visited[i][1]) {
stars--;
stars = count(visited, sky, i, 1, stars, x, y);
}
if (sky[i + 1][1] == '*' && !visited[i + 1][1]) {
stars--;
stars = count(visited, sky, i + 1, 1, stars, x, y);
}
}
else if (i == x - 1 && j > 0 && j < y - 1) {
if (sky[i][j - 1] == '*' && !visited[i][j - 1]) {
stars--;
stars = count(visited, sky, i, j - 1, stars, x, y);
}
if (sky[i][j + 1] == '*' && !visited[i][j + 1]) {
stars--;
stars = count(visited, sky, i, j + 1, stars, x, y);
}
if (sky[i - 1][j - 1] == '*' && !visited[i - 1][j - 1]) {
stars--;
stars = count(visited, sky, i - 1, j - 1, stars, x, y);
}
if (sky[i - 1][j] == '*' && !visited[i - 1][j]) {
stars--;
stars = count(visited, sky, i - 1, j, stars, x, y);
}
if (sky[i - 1][j + 1] == '*' && !visited[i - 1][j + 1]) {
stars--;
stars = count(visited, sky, i - 1, j + 1, stars, x, y);
}
}
else if (i > 0 && i < x - 1 && j == y - 1) {
if (sky[i - 1][j] == '*' && !visited[i - 1][j]) {
stars--;
stars = count(visited, sky, i - 1, j, stars, x, y);
}
if (sky[i + 1][j] == '*' && !visited[i + 1][j]) {
stars--;
stars = count(visited, sky, i + 1, j, stars, x, y);
}
if (sky[i - 1][j - 1] == '*' && !visited[i - 1][j - 1]) {
stars--;
stars = count(visited, sky, i - 1, j - 1, stars, x, y);
}
if (sky[i][j - 1] == '*' && !visited[i][j - 1]) {
stars--;
stars = count(visited, sky, i, j - 1, stars, x, y);
}
if (sky[i + 1][j - 1] == '*' && !visited[i + 1][j - 1]) {
stars--;
stars = count(visited, sky, i + 1, j - 1, stars, x, y);
}
}
else if (i > 0 && i < x - 1 && j > 0 && j < y - 1) {
if (sky[i - 1][j] == '*' && !visited[i - 1][j]) {
stars--;
stars = count(visited, sky, i - 1, j, stars, x, y);
}
if (sky[i + 1][j] == '*' && !visited[i + 1][j]) {
stars--;
stars = count(visited, sky, i + 1, j, stars, x, y);
}
if (sky[i - 1][j - 1] == '*' && !visited[i - 1][j - 1]) {
stars--;
stars = count(visited, sky, i - 1, j - 1, stars, x, y);
}
if (sky[i + 1][j + 1] == '*' && !visited[i + 1][j + 1]) {
stars--;
stars = count(visited, sky, i + 1, j + 1, stars, x, y);
}
if (sky[i - 1][j + 1] == '*' && !visited[i - 1][j + 1]) {
stars--;
stars = count(visited, sky, i - 1, j + 1, stars, x, y);
}
if (sky[i + 1][j - 1] == '*' && !visited[i + 1][j - 1]) {
stars--;
stars = count(visited, sky, i + 1, j - 1, stars, x, y);
}
if (sky[i][j - 1] == '*' && !visited[i][j - 1]) {
stars--;
stars = count(visited, sky, i, j - 1, stars, x, y);
}
if (sky[i][j + 1] == '*' && !visited[i][j + 1]) {
stars--;
stars = count(visited, sky, i, j + 1, stars, x, y);
}
}
return stars;
}

public static BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
public static PrintWriter out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(System.out)));
}