#include <bits/stdc++.h>
using namespace std;
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  int t;
  cin >> t;
  while (t--) {
    int n;
    cin >> n;
    int arr[n];
    for (int i = 0; i < n; i++) {
      cin >> arr[i];
    }
    string ans = "Yes";
    for (int i = 0; i < n - 1; i++) {
      if (arr[i] < arr[i + 1] && arr[i + 1] - arr[i] != 1) {
        ans = "No";
        break;
      }
    }
    cout << ans << '\n';
  }
  return 0;
}
