#include <bits/stdc++.h>
using namespace std;
int mod = 1e9 + 7;
int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  ;
  int t;
  cin >> t;
  while (t--) {
    int n;
    cin >> n;
    int a[n + 1];
    for (int i = 0; i < n; i++) {
      cin >> a[i];
    }
    string ans = "Yes";
    for (int i = 0; i < n - 1; i++) {
      if (a[i] < a[i + 1] && a[i] + 1 != a[i + 1]) {
        ans = "No";
        break;
      }
    }
    cout << ans << endl;
  }
  return 0;
}
